JOSÉ BARQUÍN ORTIZ
Responsable del Grupo de Ecosistemas Continentales
Investigador Principal
+34 942 20 16 16 Ext. 56102
Biografía
Pepe Barquín es Doctor en Ecología fluvial por Massey University, Nueva Zelanda. Pepe ha disfrutado de diferentes posiciones como Postdoctorado en el National Institute of Water and Atmospheric Research de Nueva Zelanda o en la Universidad de Cantabria y se le concedió la posición de investigador Juan de la Cierva durante el período 2009-2011 y la de Ramón y Cajal (2012-2017) en el Departamento de Ciencias y Técnicas del Agua de la Universidad de Cantabria (Universidad de Cantabria).
Actualmente Pepe es Profesor Titular en la Universidad de Cantabria, donde participa en numerosos proyectos de investigación competitiva y en contratos con la administración o empresas como investigador principal y es miembro de la Asociación Ibérica de Limnología, de la Sociedad Ibérica de Ictiología, de la Society for Freshwater Sciences y de la New Zealand Freshwater Science Society.
Pepe también ha dirigido numerosas tesis de máster y doctorado y participa en la docencia de un máster sobre gestión de sistemas hídricos en la Universidad de Cantabria.
LÍNEAS DE INVESTIGACIÓN
Patrones de biodiversidad acuática.
Determinación de factores que controlan el metabolismo fluvial.
Efectos de la deforestación y cambios en los usos del suelo en los ecosistemas fluviales.
Efectos de actividades antrópicas en los ecosistemas fluviales.
pUBLiCACIOnES
| es | ART21014 | Mediterranean springs: keystone ecosystems and biodiversity refugia threatened by global change | JOSE BARQUIN ORTIZ; Fernández-Martínez, M.; Bonada, N.; Cantonati, M.; Churro, C.; Corbera, J.; Delgado, C.; Dulsat-Masvidal, M.; García, G.; Margalef, O.; Pascual, R.; Peñuelas, J.; Preece, C.; Sabater, F.; Seiler, H.; Zamora-Marín, J. M.; Romero, E. | Global Change Biology, 2024, 30(1), e16997 | Blackwell Science | 2024-01-01T00:00:00 | 2024 | 22 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1365-2486,1354-1013 | 10.1111/gcb.16997 | https://doi.org/10.1111/gcb.16997 | 10902/32349 | PID2021-128778OA-I00 | Mediterranean spring ecosystems are unique habitats at the interface between surface water and groundwater. These ecosystems support a remarkable array of biodiversity and provide important ecological functions and ecosystem services. Spring ecosystems are influenced by abiotic, biotic, and anthropogenic factors such as the lithology of their draining aquifers, their climate, and the land use of their recharge area, all of which affect the water chemistry of the aquifer and the spring discharges. One of the most relevant characteristics of spring ecosystems is the temporal stability of environmental conditions, including physicochemical features of the spring water, across seasons and years. This stability allows a wide range of species to benefit from these ecosystems (particularly during dry periods), fostering an unusually high number of endemic species. However, global change poses important threats to these freshwater ecosystems. Changes in temperature, evapotranspiration, and precipitation patterns can alter the water balance and chemistry of spring water. Eutrophication due to agricultural practices and emergent pollutants, such as pharmaceuticals, personal care products, and pesticides, is also a growing concern for the preservation of spring biodiversity. Here, we provide a synthesis of the main characteristics and functioning of Mediterranean spring ecosystems. We then describe their ecological value and biodiversity patterns and highlight the main risks these ecosystems face. Moreover, we identify existing knowledge gaps to guide future research in order to fully uncover the hidden biodiversity within these habitats and understand the main drivers that govern them. Finally, we provide a brief summary of recommended actions that should be taken to effectively manage and preserve Mediterranean spring ecosystems for future generations. Even though studies on Mediterranean spring ecosystems are still scarce, our review shows there are sufficient data to conclude that their future viability as functional ecosystems is under severe threat. | |||||||||
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| es | ART21037 | Multi-decadal improvements in the ecological quality of European rivers are not consistently reflected in biodiversity metrics | MARIO ALVAREZ CABRIA; JOSE BARQUIN ORTIZ; Sinclair, James S.; Welti, Ellen A. R.; Altermatt, Florian; Aroviita, Jukka; Baker, Nathan J.; Barešová, Libuše; Bonacina, Luca; Bonada, Núria; Cañedo-Argüelles, Miguel; Csabai, Zoltán; Eyto, Elvira de; Dohet, Alain; Dörflinger, Gerald; Eriksen, Tor E.; Evtimova, Vesela; Feio, Maria J.; Ferréol, Martial; Floury, Mathieu | Nature Ecology and Evolution, 2024, 8, 430-441 | Springer Nature | 2024-03-01T00:00:00 | 2024 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 2397-334X | 10.1038/s41559-023-02305-4 | https://doi.org/10.1038/s41559-023-02305-4 | 10902/32387 | PID2019-107085RB-I00 | info:eu-repo/grantAgreement/EC/LIFE PROGRAMME/LIFE18 NAT%2FES%2F000121/EU/Improving Aquatic Diversity in Picos de Europa/LIFE DIVAQUA/ | Humans impact terrestrial, marine and freshwater ecosystems, yet many broad-scale studies have found no systematic, negative biodiversity changes (for example, decreasing abundance or taxon richness). Here we show that mixed biodiversity responses may arise because community metrics show variable responses to anthropogenic impacts across broad spatial scales. We first quantified temporal trends in anthropogenic impacts for 1,365 riverine invertebrate communities from 23 European countries, based on similarity to least-impacted reference communities. Reference comparisons provide necessary, but often missing, baselines for evaluating whether communities are negatively impacted or have improved (less or more similar, respectively). We then determined whether changing impacts were consistently reflected in metrics of community abundance, taxon richness, evenness and composition. Invertebrate communities improved, that is, became more similar to reference conditions, from 1992 until the 2010s, after which improvements plateaued. Improvements were generally reflected by higher taxon richness, providing evidence that certain community metrics can broadly indicate anthropogenic impacts. However, richness responses were highly variable among sites, and we found no consistent responses in community abundance, evenness or composition. These findings suggest that, without sufficient data and careful metric selection, many common community metrics cannot reliably reflect anthropogenic impacts, helping explain the prevalence of mixed biodiversity trends. | |||||||||
| es | ART16834 | Ecosystem-level effects of re-oligotrophication and N:P imbalances in rivers and estuaries on a global scale | OSCAR BELMAR DIAZ; JOSE BARQUIN ORTIZ; Ibáñez, Carles; Caiola, Nuno; Benito-Granell, Xavier; Casals, Frederic; Fennessy, Siobhan; Hughes, Jocelyn; Palmer, Margaret; Peñuelas, Josep; Romero, Estela; Sardans, Jordi; Williams, Michael | Global Change Biology, 2023, 29(5), 1248-1266 | Blackwell Science | 2023-03-01T00:00:00 | 2023 | 19 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1365-2486,1354-1013 | 10.1111/gcb.16520 | https://doi.org/10.1111/gcb.16520 | 10902/28058 | Trends and ecological consequences of phosphorus (P) decline and increasing nitrogen (N) to phosphorus (N:P) ratios in rivers and estuaries are reviewed and discussed. Results suggest that re-oligotrophication is a dominant trend in rivers and estuaries of high-income countries in the last two-three decades, while in low-income countries widespread eutrophication occurs. The decline in P is well documented in hundreds of rivers of United States and the European Union, but the biotic response of rivers and estuaries besides hytoplankton decline such as trends in phytoplankton composition, changes in primary production, ecosystem shifts, cascading effects, changes in ecosystem metabolism, etc., have not been sufficiently monitored and investigated, neither the effects of N:P imbalance. N:P imbalance has significant ecological effects that need to be further investigated. There is a growing number of cases in which phytoplankton biomass have been shown to decrease due to re-oligotrophication, but the potential regime shift from phytoplankton to macrophyte dominance described in shallow lakes has been documented only in a few rivers and estuaries yet. The main reasons why regime shifts are rarely described in rivers and estuaries are, from one hand the scarcity of data on macrophyte cover trends, and from the otherhand physical factors such as peak flows or high turbidity that could prevent a general spread of submerged macrophytes as observed in shallow lakes. Moreover, re-oligotrophication effects on rivers may be different compared to lakes (e.g., lower dominance of macrophytes) or estuaries (e.g., limitation of primary production by N instead of P) or may be dependent on river/estuary type. We conclude that river and estuary re-oligotrophication effects are complex, diverse and still little known, and in some cases are equivalent to those described in shallow lakes, but the regime shift is more likely to occur in mid to high-order rivers and shallow estuaries. | ||||||||||
| es | ART16913 | An evaluation of freshwater monitoring programs in ILTER nodes and mountain national parks: identifying key variables to monitor global change effects | FRANCISCO JESUS PEÑAS SILVA; MARIO ALVAREZ CABRIA; JOSE BARQUIN ORTIZ; Sáinz-Bariáin, Marta; Mata-Campo, María Pilar; Pérez-Haase, Aaron; Ventura, Marc; Polo-Gómez, María José; Alonso, Carlos; Granados, Ignacio; Morellón, Mario; Pérez-Martínez, Carmen; Rubio-Romero, Ángel; Carrillo, Presentación; Zamora-Muñoz, Carmen; Valladolid-Martín, María; Camarero, Lluís; Gacia, Esperança; Puig, Mariàngels; Buchaca, Teresa | Biodiversity and Conservation, 2023, 32(1), 65-94 | Springer | 2023-01-01T00:00:00 | 2023 | 30 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0960-3115 | 10.1007/s10531-022-02466-x | https://doi.org/10.1007/s10531-022-02466-x | 10902/28164 | Identifying and quantifying global change impacts on biotic and abiotic components of ecosystems is critical to promote an effective adaptation that increases the success of conservation strategies. To achieve this goal, global and regional assessment efforts require certain degree of harmonization on local monitoring programs to establish relevant comparisons at different spatio-temporal scales. Otherwise, the lack of harmonization might hinder the detection and assessment on the effects of human impacts. In this work we have compiled information on freshwater monitoring programs located in areas of intensive research and conservation interest: International Long Term Ecological Research (ILTER) nodes and mountain National Parks. We aimed at evaluating the quality and robustness of these programs to assess the impact of global change, addressing from the worldwide to the European and Spanish national scale. Results highlighted that freshwater monitoring programs lack a common strategy to monitor these ecosystems. Even at the continental and national scales, contrasting strategies and level of detail have been historically applied. Water quality, habitat and biodiversity are more commonly monitored than community structure and ecosystem functioning. Monitoring efforts on the Spanish Mountain National parks indicated differences on the targeted aquatic ecosystems. Rivers and lakes received a higher attention, while mires were rarely considered. Our results provide evidence that greater efforts should be directed towards constructing a coordinated strategy to monitor freshwater ecosystems at national, continental, and global scales. This strategy should involve a shared backbone of biophysical and biogeochemical variables for each habitat type on agreed protocols that are implemented across regions and administrative borders. Achieving this will support a substantial advance on the ecological research to further delineate proper conservation strategies to face the challenges imposed by global change. | ||||||||||
| es | ART16923 | Human activities disrupt the temporal dynamics of salinity in Spanish rivers | EDURNE ESTEVEZ CAÑO; JOSE BARQUIN ORTIZ; Moyano Salcedo, Alvaro Javier; Cañedo-Argüelles, Miguel; Salvadó, Humbert | Hydrobiologia, 2022, 850(20), 4531-4546 | Springer | 2023-11-01T00:00:00 | 2023 | 16 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1573-5117,0018-8158 | 10.1007/s10750-022-05063-9 | https://doi.org/10.1007/s10750-022-05063-9 | 10902/32299 | Human activities are not only increasing salinization of rivers, they might also be altering the temporal dynamics of salinity. Here, we assess the effect of human activities on the temporal dynamics of electrical conductivity (EC) in 91 Spanish rivers using daily measures of EC from 2007 to 2011. We expected rivers weakly affected by human activities to have low and constant ECs, whereas rivers strongly affected by human activities should have high and variable ECs throughout the year. We collected information on land use, climate, and geology that could explain the spatiotemporal variation in EC. We identified four groups of rivers with differences in EC trends that covered a gradient of anthropogenic pressure. According to Random Forest analysis, temporal EC patterns were mainly driven by agriculture, but de-icing roads, mining, and wastewater discharges were also important to some extent. Linear regressions showed a moderate relationship between EC variability and precipitation, and a weak relationship to geology. Overall, our results show strong evidence that human activities disrupt the temporal dynamics of EC. This could have strong effects on aquatic biodiversity (e.g., aquatic organisms might not adapt to frequent and unpredictable salinity peaks) and should be incorporated into monitoring and management plans. | ||||||||||
| es | ART16974 | Large-scale spatial patterns of riverine communities: niche versus geographical distance | CASSIA ROCHA POMPEU; FRANCISCO JESUS PEÑAS SILVA; JOSE BARQUIN ORTIZ | Biodiversity and Conservation, 2023, 32, 589-607 | Springer | 2023-02-01T00:00:00 | 2023 | 19 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0960-3115 | 10.1007/s10531-022-02514-6 | https://doi.org/10.1007/s10531-022-02514-6 | 10902/28169 | PID2019-107085RB-I00 | info:eu-repo/grantAgreement/EC/H2020/765553/EU/A EUROpean training and research network for environmental FLOW management in river basins/EUROFLOW/ | Freshwater ecosystems are among the most threatened ecosystems on Earth. Effective conservation strategies are essential to reverse this trend and should be based on sound knowledge of biodiversity patterns and the main drivers structuring them. In this study, we investigated the role of environmental and dispersal-connectivity controls on freshwater diatom and fish communities? variability. We used 441 biological samples obtained from Spanish biomonitoring datasets, which cover a highly variable environmental gradient across the national river network. We compared the taxonomic and trait-based spatial dependency of the two biotic groups using distance-decay relationships and variation partitioning with spatially constrained randomisations. Our findings showed that most of the diatoms and fish biological variation was attributed to pure spatial and spatially structured environmental variation. Compared to diatoms, fish community composition presented a stronger spatial dependency, likely because of their weaker dispersal ability. In addition, broad-scale environmental characteristics showed a higher predictive capacity for fish assemblages? variation. Trait-based similarities presented lower spatial dependency than taxonomic datasets, indicating that they are less susceptible to dispersal-connectivity effects. These findings contribute to understand the mechanisms underlying river community assembly at large spatial scales (i.e., at and beyond the river network) and point out the importance of dispersal-connectivity processes, which are usually neglected in traditional niche-based biomonitoring programmes but can influence their outcomes (e.g., masking the detection of anthropogenic impacts). Therefore, the integration of the dispersal-connectivity component, as well as information on organisms? dispersal abilities, are crucial when establishing effective conservation objectives and designing biomonitoring strategies. | ||||||||
| es | ART18371 | Renaturalización pasiva en la Cordillera Cantábrica: bases y retos científicos para una sostenibilidad socio-ecológica | JOSE MANUEL ALVAREZ MARTINEZ; JOSE BARQUIN ORTIZ; IGNACIO PEREZ SILOS; García, Daniel; Suárez Seoane, Susana; Jiménez Alfaro, Borja; Álvarez, David; Álvarez Álvarez, Pedro; Calvo, Leonor; Illera, Juan Carlos; Laiolo, Paola; Quevedo de Anta, Mario; Roces Díaz, José Valentín; Santín, Cristina | Ecosistemas, 2023, 32(1), 2507 | Asociacion Española de EcologíaTerrestre | 2023-04-01T00:00:00 | 2023 | 11 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1697-2473 | 10.7818/ECOS.2507 | 10902/29380 | PID2019-107085RB-I00 | La renaturalización pasiva, o recuperación de los ecosistemas tras el abandono del uso humano del territorio, representa una oportunidad para restaurar biodiversidad y servicios ecosistémicos en un contexto de crisis ambiental global. No obstante, también puede provocar declive de determinadas especies, cambios en los regímenes de perturbación o pérdidas de valores culturales. Esta revisión integra el conocimiento actual sobre patrones y procesos ecológicos de renaturalización pasiva en la Cordillera Cantábrica (NO España) para generar una primera base de evidencia sobre la que apoyar la gestión ambiental. Se observa un patrón de recuperación de bosques y matorrales en áreas anteriormente ocupadas por pastizales ganaderos y campos agrícolas, que implica cambios en la estructura del paisaje, la riqueza y la composición de las comunidades ecológicas, la acumulación de carbono en biomasa y suelos, y la provisión de diferentes servicios ecosistémicos. Los procesos que modulan la renaturalización son: 1) la dispersión de organismos, que condiciona la sucesión ecológica y la persistencia de especies a escala regional; 2) las dinámicas tróficas, cuyo funcionamiento depende de la presencia de grandes depredadores apicales y de la estructura del paisaje; y 3) los regímenes de perturbaciones ecológicas, actualmente dominados por la ganadería y los incendios antropogénicos. Por sus efectos ecológicos, la renaturalización pasiva representa una estrategia efectiva de restauración de ecosistemas y sus funciones clave en la Cordillera Cantábrica. Su aceptación social dependerá de la compatibilización de este proceso con el uso ganadero y ecoturístico del territorio, así como de la eficacia de las políticas conservacionistas, agrarias y forestales. | ||||||||||
| es | ART18738 | Large-scale factors controlling biological communities in the Iberian Peninsula: an insight into global change effects on river ecosystems | CASSIA ROCHA POMPEU; FRANCISCO JESUS PEÑAS SILVA; OSCAR BELMAR DIAZ; JOSE BARQUIN ORTIZ | Aquatic Sciences, 2023, 85, 95 | Springer Nature | 1900-01-01T00:00:00 | 2023 | 17 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1015-1621,1420-9055 | 10.1007/s00027-023-00995-3 | https://doi.org/10.1007/s00027-023-00995-3 | 10902/30089 | PID2019-107085RB-I00 | info:eu-repo/grantAgreement/EC/H2020/765553/EU/A EUROpean training and research network for environmental FLOW management in river basins/EUROFLOW/ | The ongoing global environmental change poses a serious threat to rivers. Comprehensive knowledge of how stressors affect biota is critical for supporting effective management and conservation strategies. We evaluated the major gradients influencing spatial variability of freshwater biodiversity in continental Spain using landscape-scale variables representing climate, land use and land cover (LULC), flow regime, geology, topography, and diatom (n = 117), macroinvertebrate (n = 441), and fish (n = 264) communities surveyed in minimally impacted streams. Redundancy analysis identified the environmental factors significantly contributing to community variability, and specific multivariate analyses (RLQ method) were used to assess trait?environment associations. Environmental variables defined the major community change gradients (e.g., mountain?lowland). Siliceous, steep streams with increased precipitation levels favored stalked diatoms, macroinvertebrates with aquatic passive dissemination, and migrating fish. These traits were replaced by adnate diatoms, small macroinvertebrates, and nonmigratory fish in lowland streams with warmer climates, calcareous geology, agriculture, and stable flow regimes. Overall, landscape-scale environmental variables better explained fish than diatom and macroinvertebrate community variability, suggesting that these latter communities might be more related to local-scale characteristics (e.g., microhabitat structure, substrate, and water physicochemistry). The upslope environmental gradient of river networks (e.g., slope, temperature, and LULC changes) was paralleled to the observed taxonomy-based and trait-based spatial variability. This result indicates that global change effects on riverine biodiversity could emerge as longitudinal distribution changes within river networks. Implementing management actions focusing simultaneously on water temperature, hydrological regime conservation (e.g., addressing LULC changes), and river continuity might be the best strategy for mitigating global change effects on river biodiversity. | ||||||||
| es | ART18859 | Towards adaptive water management-optimizing river water diversion at the basin scale under future environmental conditions | FRANCISCO JESUS PEÑAS SILVA; JOSE BARQUIN ORTIZ; Derepasko, Diana; Witing, Felix; Volk, Martin | Water, 2023, 15(18), 3289 | MDPI | 1900-01-01T00:00:00 | 2023 | 21 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 2073-4441 | 10.3390/w15183289 | 10902/30265 | PID2020-114427RJ-I00 | info:eu-repo/grantAgreement/EC/H2020/765553/EU/A EUROpean training and research network for environmental FLOW management in river basins/EUROFLOW/ | The degree of success of river water diversion planning decisions is affected by uncertain environmental conditions. The adaptive water management framework incorporates this uncertainty at all stages of management. While the most effective form of adaptive management requires experimental comparison of practices, the use of optimization modeling is convenient for conducting exploratory simulations to evaluate the spatiotemporal implications of current water diversion management decisions under future environmental changes. We demonstrate such an explorative modeling approach by assessing river water availability for diversion in a river basin in Northern Spain under two future environmental scenarios that combine climate and land use change. An evolutionary optimization method is applied to identify and reduce trade-offs with Supporting Ecosystem Services linked to environmental flow requirements for relevant local freshwater species. The results show that seasonal shifts and spatial heterogeneity of diversion volumes are the main challenges for the future diversion management of the Pas River. Basin-scale diversion management should take into account the seasonal planning horizon and the setting of tailored diversion targets at the local-level to promote the implementation of adaptive management. The presented assessment can help with strategic placement of diversion points and timing of withdrawals, but it also provides deeper insight into how optimisation can support decision-making in managing water diversion under uncertain future environmental conditions. | |||||||||
| es | ART21060 | Chronic exposure to environmental temperature attenuates the thermal sensitivity of salmonids | ALEXIA MARIA GONZALEZ FERRERAS; JOSE BARQUIN ORTIZ; FRANCISCO JESUS PEÑAS SILVA; Penelope S. A.Blyth,; Hawksley, Jack; Kinsella, Hugh; Lauridsen, Rasmus; Morris, Olivia F.; Thomas, Gareth E.; Woodward, Guy; Zhao, Lei; O`Gorman, Eoin J. | Nature Communications, 2023, 14, 8309 | Nature Publishing Group | 2023-12-14T00:00:00 | 2023 | 10 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 2041-1723 | 10.1038/s41467-023-43478-7 | https://www.nature.com/articles/s41467-023-43478-7#Ack1 | 10902/32370 | PID2019-107085RB-I00 | Metabolism, the biological processing of energy and materials, scales predictably with temperature and body size. Temperature effects on metabolism are normally studied via acute exposures, which overlooks the capacity for organisms to moderate their metabolism following chronic exposure to warming. Here, we conduct respirometry assays in situ and after transplanting salmonid fish among different streams to disentangle the effects of chronic and acute thermal exposure. We find a clear temperature dependence of metabolism for the transplants, but not the in-situ assays, indicating that chronic exposure to warming can attenuate salmonid thermal sensitivity. A bioenergetic model accurately captures the presence of fish in warmer streams when accounting for chronic exposure, whereas it incorrectly predicts their local extinction with warming when incorporating the acute temperature dependence of metabolism. This highlights the need to incorporate the potential for thermal acclimation or adaptation when forecasting the consequences of global warming on ecosystems. | |||||||||
| es | ART21061 | RIPARIANET - Prioritising riparian ecotones to sustain and connect multiple biodiversity and functional components in river networks | JOSE MANUEL ALVAREZ MARTINEZ; JOSE BARQUIN ORTIZ; LAURA CONCOSTRINA ZUBIRI; Larsen, Stefano; Bruno, Maria Cristina; Jonsson, Micael; Laux, Monika; Pace, Giorgio; Scalici, Massimiliano; Schulz, Ralf | Research Ideas and Outcomes, 2023, 9, 108807 | Pensoft Publishers | 2023-08-01T00:00:00 | 2023 | 23 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 2367-7163 | 10.3897/rio.9.e108807 | 10902/32371 | Europe has committed to upscale ecosystems protection to include 30% of land and sea. However, due to historical overexploitation of natural assets, the available area for biodiversity protection is severely limited. Riparian zones are natural ecotones between aquatic and terrestrial ecosystems, contributing disproportionately to regional biodiversity and providing multiple ecosystem functions and services. Due to this and their branching geometry, riparian networks form a vast system of ?blue-green arteries? which physically and functionally connect multiple ecosystems over elevation gradients, despite covering a relatively small area of the basin. Hence, RIPARIANET argues that developing approaches able to optimise the spatial conservation of natural stream-riparian networks represent a flagship example of biodiversity protection in the EU. Although the integrity of riparian zones is fundamental for the achievement of multiple EU environmental objectives, the lack of a standardised framework for biodiversity assessment and protection across Member States has led to extensive impairment of riparian areas and frequent stakeholder conflicts. The main objective of RIPARIANET is to leverage the increasing resolution of remote sensing information to provide practitioners with evidence-based guidance and approaches to biodiversity conservation. Key questions include: i) how can we remotely assess riparian integrity and identify areas which provide effective connectivity allowing species biodiversity and ecosystem functions to persist through meta-ecological processes? ii) how can we disentangle the influence of local- and network-scale stressors and processes on riparian biodiversity to better implement river basin management schemes? iii) to what extent do currently existing protected areas in rivers account for the geometry of riparian networks and their multifunctionality? We will address these questions in riparian networks within six river basins in Europe, including Boreal, Continental, Alpine, Temperate and Mediterranean systems. First, we will gather local needs and interests from key stakeholders together with satellite imagery and GIS environmental data for all basins. Then, riparian and river ecosystems functions will be modelled and ecological hotspots will be identified through a GIS-based multi-criteria approach, including stakeholder inputs. Then, we will collect in situ data to assess multiple biodiversity and stressors at the local scale and, subsequently, scale-up this information to the network scale using geostatistical tools and advanced modelling. This knowledge will be conveyed to managers at local and EU scales in the form of decision-support tools allowing decision-makers to identify protection gaps and ecological hotspots along riparian networks, based on multiple biodiversity, functional and connectivity criteria. | |||||||||||
| es | ART12002 | The effect of altered flow regimes on aquatic primary producer communities: Diatoms and macrophytes | ALEJANDRA GOLDENBERG VILAR; FRANCISCO JESUS PEÑAS SILVA; JOSE BARQUIN ORTIZ; Delgado, Cristina | Ecohydrology, 2022, 15(1), e2353 | John Wiley and Sons Ltd | 2022-01-27T00:00:00 | 2022 | 62 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1936-0584,1936-0592 | 10.1002/eco.2353 | https://doi.org/10.1002/eco.2353 | 10902/27663 | BIA2015-71197 | info:eu-repo/grantAgreement/EC/H2020/765553/EU/A EUROpean training and research network for environmental FLOW management in river basins/EUROFLOW/ | Rivers are intensively managed worldwide through unprecedented flow regime alterations on a global scale. This has led to an increasing interest in the development of quantitative tools to assess the ecological response of organisms to flow alteration. To date, studies reflect a large diversity of responses that make the intensity and prevalence of effects difficult to generalize. The present study analysed how flow alterations caused by dams affect the structure, composition and traits of diatoms and macrophytes in three Spanish river basins (Cantabric, Ebro and Duero). By using a control-impact design based mainly in hydrological similarity, our results showed consistent patterns of change in diatom and macrophyte communities. Our study showed a shift from resistant traits such as non-colonial diatom forms and crust-forming algae, which are adapted to the extreme events and natural dynamism of unregulated rivers, towards planktonic diatoms, free-floating algae and the mass development of aquatic plants in hydrological altered sites. Both communities shared common thresholds of response to altered hydrological attributes that could be considered in a flow management context. The hydrological indices that impacted diatom and macrophyte communities the most were related with the magnitude and duration of minimum flows. However, our results also show that it is important to consider the interrelationships between the different hydrological attributes such as the seasonal variability of monthly flows, the magnitude of maximum annual extremes, the timing of flow events, and the frequency and rate of flow changes. | ||||||||
| es | ART12021 | Variability of diatom community composition and structure in mountain streams | JOSE BARQUIN ORTIZ; ALEJANDRA GOLDENBERG VILAR; González-Paz, Lorena; Comesaña, María; Pardo, Isabel; Delgado, Cristina | Hydrobiologia, 2022, 849(5), 1177-1194 | Springer | 2022-03-01T00:00:00 | 2022 | 18 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1573-5117,0018-8158 | 10.1007/s10750-021-04779-4 | https://doi.org/10.1007/s10750-021-04779-4 | 10902/27666 | Small rivers support high levels of biodiversity, being especially sensitive to the effects of global change. Temporal records of community composition in minimally impaired streams can be used to explore trends in biodiversity in response to climate change and natural temporal variation. We approached the comparison of two time periods (2003-2008 and 2016-2020) to study whether the composition of diatom assemblages changed over time in twenty-three streams of the mountain range of Picos de Europa (Northern Spain). The stream?s water chemistry indicated significant decreases in N_NO3- and P_PO43- content over time. In these minimally disturbed streams, the specific diatom community was dominated by Achnanthidium pyrenaicum, Achnanthidium minutissimum and Cocconeis euglypta. PERMANOVA analyses did not identify significant changes in diatom assemblage composition between periods or river types. Diatom indices (e.g. IPS, NORTIdiat) indicated high or good ecological status and relatively high alpha diversity values were found in these mountain rivers during the studied years. Although diversity and evenness showed a significant decrease over time, the temporal stability of the river-type diatom reference community between the two periods should be considered as an indicator of biodiversity persistence of high importance when monitoring the ecological status following the reference condition approach. | ||||||||||
| es | ART13597 | From Forest Dynamics to Wetland Siltation in Mountainous Landscapes: A RS-Based Framework for enhancing Erosion Control | GONZALO HERNANDEZ ROMERO; JOSE MANUEL ALVAREZ MARTINEZ; IGNACIO PEREZ SILOS; ANA SILIO CALZADA; JOSE BARQUIN ORTIZ; Vieites, David R. | Remote Sensing, 2022, 14, 1864 | MDPI | 2022-04-13T00:00:00 | 2022 | 22 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 2072-4292 | 10.3390/rs14081864 | 10902/25104 | PID2019-107085RB-I00 | Human activities have caused a significant change in the function and services that ecosystems have provided to society since historical times. In mountainous landscapes, the regulation of services such as water quality or erosion control has been impacted by land use and land cover (LULC) changes, especially the loss and fragmentation of forest patches. In this work, we develop a Remote Sensing (RS)-based modelling approach to identify areas for the implementation of nature-based solutions (NBS) (i.e., natural forest conservation and restoration) that allow reducing the vulnerability of aquatic ecosystems to siltation in mountainous regions. We used time series Landsat 5TM, 7ETM+, 8OLI and Sentinel 2A/2B MSI (S2) imagery to map forest dynamics and wetland distribution in Picos de Europa National Park (Cantabrian Mountains, northern Spain). We fed RS-based models with detailed in situ information based on photo-interpretation and fieldwork completed from 2017 to 2021. We estimated a forest cover increase rate of 2 ha/year comparing current and past LULC maps against external validation data. We applied this forest gain to a scenario generator model to derive a 30-year future LULC map that defines the potential forest extent for the study area in 2049. We then modelled the distribution of wetlands to identify the areas with the greatest potential for moisture accumulation. We used an S2 mosaic and topography-derived data such as the slope and topographic wetness index (TWI), which indicate terrain water accumulation. Overall accuracy scores reached values of 86% for LULC classification and 61% for wetland mapping. At the same time, we obtained the potential erosion using the NetMap software to identify potential sediment production, transport and deposition areas. Finally, forest dynamics, wetland distribution and potential erosion were combined in a multi-criteria analysis aiming to reduce the amount of sediment reaching selected wetlands. We achieved this by identifying the most suitable locations for the conservation and restoration of natural forests on slopes and in riparian areas, which may reduce the risk of soil erosion and maximise sediment filtering, respectively. The results show a network pattern for forest management that would allow for controlling erosion effects across space and time at three levels: one, by reducing the load that originates upslope in the absence of forest cover; two, by intersecting runoff at watercourses related to sediment transport; and three, by a lack of former barriers, by trapping erosion near to the receiving wetland systems, main river axes and contributing streams. In conclusion, the proposed methodology, which could be transferred to other mountain regions, allows to optimise investment for erosion prevention and wetland conservation by using only very specific areas of the landscape for habitat management (e.g., for NBS implementation). | ||||||||||
| es | ART14128 | Are consumers willing to pay for beef that has been produced without the use of uncontrolled burning methods? A contingent valuation study in North-West Spain | JOSE BARQUIN ORTIZ; JOSE MANUEL ALVAREZ MARTINEZ; ANA SILIO CALZADA; Deely, John; Hynes, Stephen; Burgess, Diane; Finney, Graham | Economic Analysis and Policy, 2022, 75, 577?590 | Elsevier | 2022-06-22T00:00:00 | 2022 | 14 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0313-5926 | 10.1016/j.eap.2022.06.014 | https://doi.org/10.1016/j.eap.2022.06.014 | 10902/25373 | Land burning has long been used as an effective means of land management. Used in a controlled manner, the burning of vegetation to clear land can have minimal effects on the natural environment. However, uncontrolled land burning, where fires are allowed to spread beyond the intended area, can have severe and detrimental effects on ecosystem functioning. This paper examines the premium residents of the Cantabria region of Spain are willing to pay for beef that has been reared without the use of uncontrolled land burning. Using the single bounded contingent valuation method, the result indicates that the average respondent is willing to pay an 84% price premium (=C11.31 more per kilogram) for beef that has been farmed using a more environmentally means of land management. Willingness to pay is influenced by several factors including; price, age of the consumer, level of education, number of dependants in the respondents household and historical beef consumption preferences. Further to this, the results of the bivariate probit model suggest that not all factors influencing the decision to enter the hypothetical market, influence willingness to pay. This demand-side analysis suggests that there is a viable market for Pasiego beef in the Cantabria region with more environmentally favourable production credentials. | ||||||||||
| es | ART14372 | Evaluating the biological validity of European river typology systems with least disturbed benthic macroinvertebrate communities | MARIO ALVAREZ CABRIA; JOSE BARQUIN ORTIZ; Jupke, Jonathan F.; Birk, Sebastian; Aroviita, Jukka | Science of the Total Environment, 2022, 842, 156689 | Elsevier | 2022-10-10T00:00:00 | 2022 | 11 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0048-9697,1879-1026 | 10.1016/j.scitotenv.2022.156689 | https://doi.org/10.1016/j.scitotenv.2022.156689 | 10902/26490 | Humans have severely altered freshwater ecosystems globally, causing a loss of biodiversity. Regulatory frameworks, like the Water Framework Directive, have been developed to support actions that halt and reverse this loss. These frameworks use typology systems that summarize freshwater ecosystems into environmentally delineated types. Within types, ecosystems that are minimally impacted by human activities, i.e., in reference conditions, are expected to be similar concerning physical, chemical, and biological characteristics. This assumption is critical when water quality assessments rely on comparisons to type-specific reference conditions. Lyche Solheimet al. (2019) developed a pan-European river typology system, the Broad River Types, that unifies the nationalWater Framework Directive typology systems and is gaining traction within the research community. However, it is unknown how similar biological communities are within these individual Broad River Types. We used analysis of similarities and classification strength analysis to examine if the Broad River Types delineate distinct macroinvertebrate communities across Europe and whether they outperform two ecoregional approaches: the European Biogeographical Regions and Illies' Freshwater Ecoregions. We etermined indicator and typical taxa for the types of all three typology systems and evaluated their distinctiveness. All three typology systems captured more variation in macroinvertebrate communities than random combinations of sites. The results were similar among typology systems, but the Broad River Types always performed worse than either the Biogeographic Regions or Illies' Freshwater Ecoregions. Despite reaching statistical significance, the statistics of analysis of similarity and classification strength were low in all tests indicating substantial overlap among the macroinvertebrate communities of different types. We conclude that the Broad River Types do not represent an improvement upon existing freshwater typologies when used to delineate macroinvertebrate communities and we propose future avenues for advancement: regionally constrained types, better recognition of intermittent rivers, and consideration of biotic communities. | ||||||||||
| es | ART14637 | Patterns of genetic diversity of brown trout in a northern Spanish catchment linked to structural connectivity | ALEXIA MARIA GONZALEZ FERRERAS; JOSE BARQUIN ORTIZ; Leal, Sheila; Almodóvar, Ana | Aquatic Sciences, 2022, 84(4), 48 | Springer Nature | 2022-07-26T00:00:00 | 2022 | 19 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1015-1621,1420-9055 | doi.org/10.1007/s00027-022-00877-0 | https://doi.org/10.1007/s00027-022-00877-0 | 10902/26485 | BIA-2012-33572 | The alteration of structural connectivity in fluvial networks is important for the genetic dynamics of aquatic species. Exploring the effects of network fragmentation through genetic analysis is crucial to assess the conservation status of riverine species. In this study, we investigated the genetic consequences of the altered connectivity of brown trout in the Deva-Cares catchment (northern Spain). We investigated (1) genetic diversity, (2) genetic differentiation and genetic structure, (3) migration rates and effective population size and (4) genetic differentiation and riverscape characteristics. Analysis of the genetic variation among 197 individuals from the 13 study sites revealed a high degree of genetic differentiation (FST = 0.181). Belowbarrier study sites had higher genetic diversity and lower FST values, while headwater and above-barrier study sites had lower genetic diversity and higher FST values. Most of the genetic groups identified were separated by one or more impermeable barriers. We reported an abrupt decrease in genetic diversity and effective population size in upper course tributaries and isolated reaches. Likewise, a downstream-biased gene flow was found, and it was most likely related to the fragmentation caused by barriers, since the results from migration indicated that gene flow between groups without impermeable barriers was higher bidirectionally. Isolation by impermeable barriers played a more important role than hydrological distance in determining the genetic structure. Most of the genetic groups showed small effective population sizes. Genetic analysis at the river network scale provides evidence for the role of barriers in determining genetic diversity patterns, highlighting the importance of maintaining and restoring river longitudinal connectivity. | |||||||||
| es | ART15337 | Brown trout upstream passage performance for a fishway with water drops between pools beyond fish passage design recommendations | FRANCISCO JESUS PEÑAS SILVA; JOSE BARQUIN ORTIZ; Bravo Córdoba, Francisco Javier; Fuentes Pérez, Juan Francisco; García Vega, Ana; Sanz Ronda, Francisco Javier | Water, 2022, 14(7), 2750 | MDPI | 2022-09-03T00:00:00 | 2022 | 18 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 2073-4441 | 10.3390/w14172750 | 10902/26359 | info:eu-repo/grantAgreement/EC/LIFE18 NAT%2FES%2F000121 /Improving Aquatic Diversity in Picos de Europa/LIFE DIVAQUA/ | This work aims to assess brown trout (Salmo trutta) passage through a free-flow pool-weirtype fishway with hydrodynamic notches and extreme water drops between pools. It consists of an old-school fishway design, commonly constructed in salmon rivers of Spain during the period of 1950?1980. To assess their performance, a field test was designed with confined trial conditions during the spawning migratory season. The mean water drop between pools was 0.65 m and the total water height considered for the trial was 11.8 m. The monitoring was carried out using PIT telemetry. The initial hypothesis, considering the fishway design and assessment guidelines, classified this structure as hardly insurmountable. Results showed an ascent success of 19% with a median transit time of 29.1 min/m of ascended height. Larger fish and fishway sections with lower values of volumetric power dissipation were related to a better performance in the passage. The results suggest that in certain circumstances, such as limited construction areas where other design or management options are difficult to implement (e.g., canyons), this type of fishway may be an alternative for the upstream passage of at least a small proportion of the brown trout population, although a selection effect is expected. | ||||||||||
| es | ART15503 | Monoculture plantations fuel fires amid heat waves | JOSE BARQUIN ORTIZ; LAURA CONCOSTRINA ZUBIRI; IGNACIO PEREZ SILOS; GONZALO HERNANDEZ ROMERO; ALBERTO VELEZ MARTIN; JOSE MANUEL ALVAREZ MARTINEZ | Science, 2022, 377, 6614 | American Association for the Advancement of Science | 2022-09-30T00:00:00 | 2022 | 2 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0036-8075,1095-9203 | 10.1126/science.ade5923 | https://www.science.org/doi/10.1126/science.ade5923 | ||||||||||||
| es | ART16009 | Assessing the effects of irrigation and hydropower dams on river communities using taxonomic and multiple trait-based approaches | CASSIA ROCHA POMPEU; FRANCISCO JESUS PEÑAS SILVA; MARIO ALVAREZ CABRIA; JOSE BARQUIN ORTIZ; ALEJANDRA GOLDENBERG VILAR | Ecological Indicators 2022,145,109662 | Elsevier | 2022-12-01T00:00:00 | 2022 | 15 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1470-160X,1872-7034 | 10.1016/j.ecolind.2022.109662 | https://doi.org/10.1016/j.ecolind.2022.109662 | 10902/26991 | RIFFLE PID2020-114427RJ-I00 | info:eu-repo/grantAgreement/EC/H2020/765553/EU/A EUROpean training and research network for environmental FLOW management in river basins/EUROFLOW/ | Rivers and streams have suffered multiple transformations to attend the increasing water demands worldwide. Among these, dams and reservoirs cause some of the most severe ecological impacts on rivers, altering the river flow and thermal regimens, nutrient and sediment fluxes, and network connectivity. However, in the context of the different dam purposes and operational schemes, knowledge of the ecological impacts on the riverine biota is still limited. In this study, our main goal was to assess dam-related effects (e.g. hydrological and thermal alteration, water quality changes) on river biological communities and identify key ecological responses associated to flow regulation. To achieve this, diatom, macroinvertebrate, and fish communities were surveyed in control (n = 8) and impacted (n = 11) streams (i.e. downstream of irrigation or hydropower dams) along three consecutive years. The study design aimed at minimising the environmental variability among control and impacts using previously established hydrological classifications. This allowed focusing primarily on the effects of dam operation schemes. In addition to traditional biotic indices based on the composition and structure of these communities, we assessed community-level responses using trait-based analyses with multivariate and fourth-corner analyses. The ecological changes varied with dam purpose and, in general, favoured disturbance-tolerant traits. Common biotic indices did not consistently respond to dam uses; trait-based analyses, in contrast, provided a more detailed picture of the dam-related effects on the studied river communities, with macroinvertebrate traits showing the strongest correlations to dam-related hydrological and physico-chemical variables, followed by diatoms and fish. Changes in the biological communities downstream of irrigation dams were mostly related to the inversion of the seasonal flow regimes (e.g. increases in the summer flows and magnitude of low flow extremes; decreases in the winter flows and in the frequency and magnitude of extreme high flow events) and the reduction of nutrient concentration. These changes favoured planktonic diatoms, macroinvertebrates with short life cycles and small body sizes, and fish feeding on the water column. Hydropower dams elevated significantly the rate of flow change and water temperature, favouring low profile adnate diatoms, multivoltine and passively dispersed macroinvertebrates, and scrapers. The key relationships identified in our study are useful to underpin river biodiversity conservation strategies and to set future research directions aiming at reducing the negative effects of dam operation schemes. | ||||||||
| es | ART16918 | European blue and green infrastructure network strategy vs. the common agricultural policy. Insights from an integrated case study (Couesnon, Brittany) | JOSE MANUEL ALVAREZ MARTINEZ; JOSE BARQUIN ORTIZ; Houet ,Thomas; Gaetan, Palka; Roberta, Rigo; Hugues, Boussard; Baudry, Jacques; Xavier, Poux; Jean-Baptiste, Narcy; Stefano, Balbi; Cendrine, Mony; Lucie, Lecoq; Beganton, Johanna | Land Use Policy 2022,120,106277 | Elsevier | 2022-09-01T00:00:00 | 2022 | 13 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0264-8377,1873-5754 | 10.1016/j.landusepol.2022.106277 | https://doi.org/10.1016/j.landusepol.2022.106277 | Urbanization and agricultural intensification are the main drivers of biodiversity losses through multiple stressors, especially habitat fragmentation, isolation and loss. Designing Blue and Green Infrastructure Networks (BGIN) has been recommended as a potential tool for land-use planning to increase ecosystem services while preserving biodiversity. All municipalities in France are required to perform BGIN planning. This article focuses on the Couesnon watershed (Brittany, France) and the participatory process used to define and analyze five possible pathways of future land-use and land-cover changes that included implementation of BGINs. Impacts on biodiversity were estimated by quantifying the change in landscape connectivity of woodlands, grasslands and wetlands. The effectiveness of BGIN policies was assessed by comparing current landscape connectivity (2018) to those in possible futures. Landscape connectivity referred to functional connectivity for three indicator species (Abax parallelepipedus, Maniola jurtina and Arvicola sapidus) across three landscape features: woodlands, grasslands and wetlands, respectively. Results allowed impacts of urban and agricultural land-use changes to be identified in terms of extent and quality. If BGIN policies were applied effectively to control the expansion of gray infrastructure, they would help increase the area and the quality of grassland and woodland connectivity by no more than 2%. Agricultural land-use and land-cover changes could have more impact on the extent of grassland (?82% to +38%) and wetland (?49% to +47%) connectivity. Current and future trends for hedgerows implied a decrease in woodland connectivity of 9.8?33.8%. Impacts on the quality of landscape connectivity is not proportional with the extent, as a decrease of the latter can have relatively more negative impacts on the former, and inversely. The study highlights that the BGIN strategy can preserve landscape connectivity effectively in urban ecosystems, where human density is higher, but can be threatened by agricultural intensification. | |||||||||||
| es | ART16920 | Espectrofenología con datos Sentinel 2: definición de curvas de referencia para la caracterización de ecosistemas forestales | JOSE MANUEL ALVAREZ MARTINEZ; IGNACIO PEREZ SILOS; GONZALO HERNANDEZ ROMERO; JOSE BARQUIN ORTIZ; López Trullén, David; Sánchez Labrador, Jesús David; Jiménez-Alfaro, Borja | Ecosistemas, 2022, 31(3), 2411 | Asociacion Española de Ecologia Terrestre | 2022-12-28T00:00:00 | 2022 | 14 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1697-2473 | 10.7818/ECOS.2411 | 10902/28166 | PID2019-107085RB-I00 | El seguimiento de la respuesta espectral obtenida por sensores remotos de media resolución relativo a formaciones vegetales puede proporcionar información muy relevante para el estudio de su distribución y dinámica a lo largo de gradientes ambientales y escalas geográficas. La combinación del ciclo orbital y el ancho de barrido de Sentinel 2 proporciona datos cada 5 días en latitudes medias, lo que permite realizar un seguimiento temporal de alta resolución relacionado con etapas o fases fenológicas de los ecosistemas en las que varían su composición, estructura o funcionamiento. En este contexto, el objetivo del presente estudio consiste en la obtención de curvas espectrofenológicas promedio para algunas de las principales formaciones arbóreas presentes en Cantabria, así como el análisis y la caracterización de métricas fenológicas espaciales que permitirán caracterizar el funcionamiento diferencial de la vegetación en el continuo del paisaje. Para la definición de las curvas se han empleado todos los datos históricos disponibles del sensor MSI, a bordo de los satélites Sentinel 2 A y B, con los que se ha generado una serie temporal de alta resolución del índice NDVI. Los datos se han agregado temporalmente a nivel mensual tras aplicar un filtro de nubes y sombras que maximiza la calidad del dato a nivel de pixel y un suavizado temporal de la serie para eliminar valores anómalos y perdidos. Los valores del índice han sido extraídos para una muestra de 230 puntos localizados con precisión GPS y cuya composición florística ha sido caracterizada por botánicos en campo. Se han obtenido curvas espectrofenológicas estacionales para los años del 2017 al 2020 y las curvas promedio anual, determinando su variabilidad y el grado de representatividad para las formaciones estudiadas. Finalmente se han obtenido las ecuaciones de las funciones ajustadas a las curvas promedio por formación vegetal aplicando análisis de Fourier. Los resultados muestran rasgos diferenciales para cada una de las tipologías forestales analizadas debido, principalmente, a la existencia de variaciones fenológicas intra e interanuales. Estos resultados demuestran el interés de emplear series temporales de datos para la determinación de curvas de referencia para diferentes tipologías forestales que permitan identificar su distribución espacial y otros rasgos relativos a su estructura y funcionamiento. Potencialmente, estas series de datos podrían ser utilizadas para la detección temprana de anomalías funcionales relacionadas con efectos derivados de perturbaciones naturales o antrópicas en un contexto de Cambio Global. | ||||||||||
| es | CAP8979 | The Ecological Integrity of Spring Ecosystems: A Global Review | JOSE BARQUIN ORTIZ; Stevens, Lawrence E.; Aly, Anwar A.; Arpin, Sarah M.; Apostolova, Iva; Ashley, Gail M.; Barba, Paulo Quadri; Beauger, Aude; Benaabidate, Lahcen; Bhat, Sami Ullah; Bouchaou, Lhoussaine; Cantonati, Marco; Carroll, Teresa M.; Death, Russell; Dwire, Kathleen A.; Felippe, Miguel Fernandes; Fensham, Roderick J.; Fryar, Alan E.; Garsaball, Roger Pascual i; Gjoni, Vojsava | Imperiled: The Encyclopedia of Conservation | Elsevier | 1900-01-01T00:00:00 | 2022 | -16 | 436 | 451 | LCT | Capítulo de libro | Capítulo de libro | Book part | 978-0-12-821139-7 | 10.1016/B978-0-12-821139-7.00111-2 | |||||||||||||
| es | ART10454 | Applying Optimization to Support Adaptive Water Management of Rivers | FRANCISCO JESUS PEÑAS SILVA; JOSE BARQUIN ORTIZ; Derepasko, Diana; Volk, Martin | Water 2021, 13(9), 1281 | MDPI | 2021-05-01T00:00:00 | 2021 | 24 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 2073-4441 | 10.3390/w13091281 | 10902/21747 | Adaptive water management is a promising management paradigm for rivers that addresses the uncertainty of decision consequences. However, its implementation into current practice is still a challenge. An optimization assessment can be framed within the adaptive management cycle allowing the definition of environmental flows (e-flows) in a suitable format for decision making. In this study, we demonstrate its suitability to mediate the incorporation of e-flows into diversion management planning, fostering the realization of an adaptive management approach. We used the case study of the Pas River, Northern Spain, as the setting for the optimization of surface water diversion. We considered e-flow requirements for three key river biological groups to reflect conditions that promote ecological conservation. By drawing from hydrological scenarios (i.e., dry, normal, and wet), our assessment showed that the overall target water demand can be met, whereas the daily volume of water available for diversion was not constant throughout the year. These results suggest that current the decision making needs to consider the seasonal time frame as the reference temporal scale for objectives adjustment and monitoring. The approach can be transferred to other study areas and can inform decision makers that aim to engage with all the stages of the adaptive water management cycle. | |||||||||||
| es | ART11604 | Large-scale afforestation for ecosystem service provisioning: learning from the past to improve the future | IGNACIO PEREZ SILOS; JOSE MANUEL ALVAREZ MARTINEZ; JOSE BARQUIN ORTIZ | Landscape Ecology 2021, 36, 3329-3343 | Springer Nature | 1900-01-01T00:00:00 | 2021 | 15 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1572-9761,0921-2973 | 10.1007/s10980-021-01306-7 | https://doi.org/10.1007/s10980-021-01306-7 | Context Afforestation is one of the major drivers of land cover change in the world. In spite of its multiple applications, forest generation has been fostered during the last century to achieve few specific objectives such as timber production or catchment erosion protection. However, new afforestation programs are required to meet multiple objectives such as carbon sequestration, reducing environmental risks and enhance biodiversity conservation to reach sustainability. Objectives Assessing the general efficiency of past large-scale afforestation programs on the provision of ecosystem services (ES) and other socio-ecological attributes. We also determined whether this efficiency depended on the type of ecosystem used for comparison. Methods We carried out a semi-quantitative meta-analysis from 75 studies analyzing the effects of 128 afforestation actions developed in one of the EU countries with larger areas of afforested land during the twentieth century. Results Spanish afforestation policy improved timber provision and carbon sequestration. However, our results show that afforestation programs did not enhance regulating ES when compared to natural land plots, but only when compared to highly degraded areas prior to restoration actions. Conclusions Large-scale afforestations have difficulties in assuring the provisioning of regulating ES and the conservation of biodiversity when only productivity criteria are prioritized. Our results suggest the need for an afforestation agenda that embraces more comprehensive landscape management approaches that allow reducing undesired ES trade-offs while getting multiple objectives from different ecosystems. | |||||||||||
| es | ART11608 | Using Food Webs and Metabolic Theory to Monitor, Model, and Manage Atlantic Salmon- A Keystone Species Under Threat | JOSE BARQUIN ORTIZ; Woodward, Guy; Morris, Olivia; Belgrano, Andrea; Bull, Colin; Eyto, Elvira de; Friberg, Nikolai; Guðbergsson, Guðni; Layer-Dobra, Katrin; Lauridsen, Rasmus B.; Lewis, Hannah M.; McGinnity, Philip; Pawar, Samraat; Rosindell, James; O´Gorman, Eoin J. | Frontiers in Ecology and Evolution 2021, 9, 675261 | Frontiers Media S.A. | 2021-12-01T00:00:00 | 2021 | 10 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 2296-701X | 10.3389/fevo.2021.675261 | https://doi.org/10.3389/fevo.2021.675261 | 10902/24421 | Populations of Atlantic salmon are crashing across most of its natural range: understanding the underlying causes and predicting these collapses in time to intervene effectively are urgent ecological and socioeconomic priorities. Current management techniques rely on phenomenological analyses of demographic population time-series and thus lack a mechanistic understanding of how and why populations may be declining. New multidisciplinary approaches are thus needed to capitalize on the long-term, large-scale population data that are currently scattered across various repositories in multiple countries, as well as marshaling additional data to understand the constraints on the life cycle and how salmon operate within the wider food web. Here, we explore how we might combine data and theory to develop the mechanistic models that we need to predict and manage responses to future change. Although we focus on Atlantic salmon?given the huge data resources that already exist for this species?the general principles developed here could be applied and extended to many other species and ecosystems. | ||||||||||
| es | ART12025 | When Forests Take Over After Land Abandonment: Dissolved Organic Matter Response in Headwater Mountain Streams | EDURNE ESTEVEZ CAÑO; JOSE MANUEL ALVAREZ MARTINEZ; JOSE BARQUIN ORTIZ; Dittmar, Thorsten; Singer, Gabriel | Frontiers in Water 2021, 3, 682608 | Frontiers Media SA | 1900-01-01T00:00:00 | 2021 | 12 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 2624-9375 | 10.3389/frwa.2021.682608 | https://doi.org/10.3389/frwa.2021.682608 | 10902/24194 | BIA2012-33572 | Dissolved organic matter (DOM) represents the largest pool of organic carbon in fluvial ecosystems. The majority of DOM in rivers is of terrigenous origin?making DOM composition highly dependent on vegetation cover and soil properties. While deforestation is still a worldwide anthropogenic phenomenon, current land cover change in temperate regions is often characterized by secondary succession processes following the abandonment of agricultural activities including grazing on pasturelands. This results in (secondary) forest expansion with a consequent, time-lagged transformation of soil properties. Predicting the time scale and spatial scale (i.e., location in the catchment: riparian vs. upslope areas) at which such land cover changes affect the terrestrial-aquatic carbon linkage and concomitantly alter properties of fluvial DOM as drivers of carbon cycling in freshwater ecosystems represents a new scientific challenge. In an attempt to identify potential legacy effects of land cover, i.e., reaction delays of fluvial DOM to changes in land cover, we here investigate the influence of specific current and historic (2 decade-old) land cover types on molecularly resolved fluvial DOM composition in headwater mountain streams. Our analysis is based on a scale-sensitive approach weighing in the distance of land cover (changes) to the stream and ultrahigh-resolution mass spectrometric analyses. Results identified the dominance of terrigenous DOM, with phenolic and polyphenolic sum formulae commonly associated to lignins and tannins, in all the studied streams. DOM properties mostly reflected present-day gradients of forest cover in the riparian area. In more forested catchments, DOM had on average higher molecular weight and a greater abundance of O-rich phenols and polyphenols but less aliphatics. Besides the modulation of the DOM source, our results also point to an important influence of photodegradation associated to variation in light exposition with riparian land cover in defining fluvial DOM properties. Despite expectations, we were unable to detect an effect of historic land cover on present-day DOM composition, at least at the investigated baseflow conditions, probably because of an overriding effect of current riparian vegetation. | |||||||||
| es | ART9842 | Introducing a Mechanistic Model in Digital Soil Mapping to Predict Soil Organic Matter Stocks in the Cantabrian Region (Spain) | JOSE MANUEL ALVAREZ MARTINEZ; IGNACIO PEREZ SILOS; JOSE BARQUIN ORTIZ; Hendrik, Chantal; Stoorvogel, Jetse Jacob; Claessens, Lieven | European journal of soil science Volume 72, Issue 2 p. 704-719 | Blackwell Science | 2021-03-01T00:00:00 | 2021 | 16 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1365-2389,1351-0754 | 10.1111/ejss.13011 | https://doi.org/10.1111/ejss.13011 | 10902/28113 | Digital soil mapping (DSM) is an effective mapping technique that supports the increased need for quantitative soil data. In DSM, soil properties are correlated with environmental characteristics using statistical models such as regression. However, many of these relationships are explicitly described in mechanistic simulation models. Therefore, the mechanistic relationships can, in theory, replace the statistical relationships in DSM. This study aims to develop a mechanistic model to predict soil organic matter (SOM) stocks in Natura2000 areas of the Cantabria region (Spain). The mechanistic model is established in four steps: (a) identify major processes that influence SOM stocks, (b) review existing models describing the major processes and the respective environmental data that they require, (c) establish a database with the required input data, and (d) calibrate the model with field observations. The SOM stocks map resulting from the mechanistic model had a mean error (ME) of ?2 t SOM ha?1 and a root mean square error (RMSE) of 66?t SOM ha?1. The Lin's concordance correlation coefficient was 0.47 and the amount of variance explained (AVE) was 0.21. The results of the mechanistic model were compared to the results of a statistical model. It turned out that the correlation coefficient between the two SOM stock maps was 0.8. This study illustrated that mechanistic soil models can be used for DSM, which brings new opportunities. Mechanistic models for DSM should be considered for mapping soil characteristics that are difficult to predict by statistical models, and for extrapolation purposes. | ||||||||||
| es | ART12281 | Barrier identification framework for the implementation of blue and green infrastructures | JOSE BARQUIN ORTIZ; ANA SILIO CALZADA; JOSE MANUEL ALVAREZ MARTINEZ; Deely, John; Hynes, Stephen; Burgess, Diane; Finney, Graham; Bailly, Denis; Ballé-Béganton, Johanna | Land use policy 2020, 99, 105108 | Elsevier | 2020-12-01T00:00:00 | 2020 | 12 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0264-8377,1873-5754 | 10.1016/j.landusepol.2020.105108 | https://doi.org/10.1016/j.landusepol.2020.105108 | 10902/28112 | Blue-green infrastructure (BGI) is becoming a more popular means of dealing with climate change and climate change-related events. However, as the concept of BGI is relatively new, many urban and rural planners are unfamiliar with the barriers they may face during the lifecycle of a BGI project. As a result, some have been hesitant to adopt BGI solutions. The literature has unveiled many of the barriers that inhibit the successful development of BGI, however, this information has yet to be presented in a manner that allows for easy identification. In this paper, a systematic literature review is undertaken to develop a framework which will enable BGI planners to assess the potential threats of a BGI project throughout the project?s lifecycle. | ||||||||||
| es | ART14656 | Advances in the use of molecular tools in ecological and biodiversity assessment of aquatic ecosystems | JOSE BARQUIN ORTIZ; MARTA SAINZ BARIAIN; Feio, Maria João; Filipe, Ana Filipa; Garcia-Raventós, Aina; Ardura, Alba; Calapez, Ana Raquel; Pujante, Ana Maria; Mortágua, Andreia; Múrria, Cesc; Diaz de Quijano, Daniel; Martins, Filipa MS; Duarte, Sofia; Cordeiro, Rita; Rivera, Sinziana F.; Väisänen, Leif O. S.; Fonseca, Amélia; Gonçalves, Vítor; García Vázquez, Eva; Vieites Rodríguez, David; Ivanova, Elena A.; Costa, Filipe O. | Limnetica, 2020, 39(1), 419-440 | Asociación Ibérica de Limnología | 2020-01-01T00:00:00 | 2020 | 22 | 0 | 0 | CNF | Comunicación a Congreso | Comunicación a Congreso | Conference object | Congress of the Iberian Association of Limnology (19º : 2018 : Coimbra) | 0213-8409,1989-1806 | 10.23818/limn.39.27 | 10902/26335 | Conservation and sustainable management of aquatic ecosystems is a priority in environmental programs worldwide. However, these aims are highly dependent on the efficiency, accuracy and cost of existent methods for the detection of keystone species and monitoring of biological communities. Rapid advances in eDNA, barcoding and metabarcoding promoted by high-throughput sequencing technologies are generating millions of sequences in a fast way, with a promising cost reduction, and overcoming some difficulties of the traditional taxonomic approaches. This paper provides an updated broad perspective of the current developments in this dynamic field presented in the special session (SS) ?The use of molecular tools in ecological and biodiversity assessment of aquatic ecosystems? of the XIX Congress of the Iberian Association of Limnology (AIL2018), held in Coimbra, Portugal. Developments presented are mainly focused on the Iberian Peninsula (Portugal and Spain, including Atlantic Macaronesian islands) but include studies in France, Germany, Finland, Russia (Siberia) and South America. The networks within which these researchers are involved are yet even broader, profiting from existing molecular facilities, and traditional taxonomic expertise, which can be viewed as a characteristic of this new research area. It was evident in the SS that the use of molecular tools is widespread, being used to study a diversity of aquatic systems, from rivers? headwaters to estuaries and coastal lagoons, and volcanic, mountain and frozen lakes to hot springs. The organisms targeted are likewise varied and include fish, macroinvertebrates, meiofauna, microalgae such as diatoms and dinoflagellates, other protists, fungi, and bacteria (cyanobacteria and other). Some studies address the whole biodiversity (i.e., all species present independently of the taxonomic group) from environmental samples of water, biofilms and preservative solution from field samples (e.g., ethanol from macroinvertebrate samples). Great advances were acknowledged in the special session, namely in the use of metabarcoding for detecting hidden biodiversity, juvenile stages, low-abundance species, non-indigenous species and toxicity potential, and ultimately for ecological monitoring of diatoms and invertebrates. Yet, several drawbacks were highlighted and need further work, which include: taxonomic gaps in the reference databases (including gaps at species level and on intraspecific variability) or absence of public databases (e.g. for meiofauna), still high sequencing costs, the need of a substantial bioinformatics effort, difficulties in establishing the amount of environmental sample necessary for a good DNA extraction and the need for testing different genetic markers to obtain accurate results. | ||||||||||
| es | ART8411 | Effects of changes in food resources due to variations in forest cover on stream macroinvertebrate community size structure | EDURNE ESTEVEZ CAÑO; JOSE BARQUIN ORTIZ; Larrañaga, Aitor; Alonso, Carlos | Aquatic Sciences, 2020, 82, 40 | Springer Nature | 2020-04-01T00:00:00 | 2020 | 17 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1015-1621,1420-9055 | 10.1007/s00027-020-0713-5 | https://link.springer.com/article/10.1007/s00027-020-0713-5 | BIA2015-71197 ; BIA2012-33572 | Changes in land cover are one of the most extensive and influential human impacts on fluvial ecosystems. In this study, we assessed how changes in food resource quantity and type linked to forest cover affect mountain stream multitrophic macroinvertebrate community size structure. We tested whether the total organism biomass (size spectrum intercept) and the energy transfer efficiency among trophic levels (size spectrum slope) are altered. Community size spectra slopes remained unchanged with variations in food resource type, while intercept increased with resource quantity. This pointed to an internal compensatory regulation of the community size structure for the maintenance of trophic transfer efficiency, only adjusting the total organism biomass to total food resource quantity through variations in organism abundance. Community size structure consistency was related to detritivore-omnivore substitutions, although the shifts in size structure with variations in the degree of allochthony differed between these feeding groups. Omnivore change was numerical (i.e., increase in large organism density with a decrease in allochthony) not related to body size or taxonomic composition. In contrast, detritivores showed a reduction in body size with the decrease in allochthony that did not coincide with a reduction in total biomass or density, but was related to a taxonomic replacement of larger case-building trichopterans by smaller detritivores. These findings elucidate how the size structure of a multitrophic macroinvertebrate community might respond to changes in forest cover, shedding light on the effects of global environmental change on the structure and stability of stream food webs. | ||||||||||
| es | ART16864 | Catchment land cover influences macroinvertebrate food-web structure and energy flow pathways in mountain streams | Estévez E., Álvarez-Martínez J., Álvarez-Cabria M., Robinson C., Battin T., Barquín J., | Freshwater Biology, 2019, 64, 1557-1571 | Wiley-Blackwell | 1900-01-01T00:00:00 | 2019 | 15 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0046-5070,1365-2427 | 10.1111/fwb.13327 | BIA2012-33572 | 1. Understanding how different food resources sustain stream food webs is fundamental towards increasing our knowledge on trophic structure and energy flow pathways in fluvial ecosystems. 2. Food webs in small mountain streams are sustained by autochthonous (instream primary production) and allochthonous (inputs from the terrestrial ecosystem) organic resources, with their relative importance highly dependent on catchment land cover. 3. This study aimed to understand how catchment land cover determines food resource type (autochthonous, allochthonous) and quantity in mountain streams, and how this affects energy flow pathways and food web structure. We hypothesised that food resource type and quantity would reflect catchment land cover. Thus, changes in food resources would lead to shifts in macroinvertebrate assimilation of autochthonous and allochthonous food resources and consequently in dominant energy flow pathways. We further hypothesised that changes in food resources will have strong effects on dominant feeding groups and community biomass distribution among taxa in food webs. 4. Energy flow pathways were quantified by combining macroinvertebrate biomass measures and assimilation of food resources estimated from ?2H and ?15N in 10 streams along a forest cover gradient, located in the Cantabrian Mountains (northern Spain). 5. Results showed that grassland/shrub dominated streams had a higher proportion autochthonous food resources and a lower proportion of allochthonous food resources, whereas forested streams showed the opposite pattern. Changes in food resources with forest cover resulted in shifts in food resource assimilation and dominant energy flow pathways. Forested streams were mainly sustained by allochthonous resources, while streams flowing through grassland/shrub landscapes were mostly sustained by autochthonous resources. 6. Food resource assimilation differed between feeding groups. Detritivores showed a fixed assimilation of allochthonous resources independent of resource quantity, while omnivore assimilation was determined by the dominant food resource. Thiswas reflected in food?web structure. There was an increase in detritivore biomass and conservation of omnivore biomass with increasing forest cover, leading to a more equal distribution of community biomass among macroinvertebrates comprising individual food webs. 7. The dependence of stream food webs on dominant food resources highlights the importance of catchment land cover in determining energy flow pathways and food web structure in low order mountain streams. These findings will improve our predictions on the effects of land cover change on the functioning of mountain stream ecosystems. | |||||||||||
| es | ART5944 | Assessment of large-scale patterns of hydrological alteration caused by dams | JOSE BARQUIN ORTIZ; Peñas, Francisco J. | Journal of Hydrology Volume 572, May 2019, Pages 706-718 | Elsevier | 2019-05-01T00:00:00 | 2019 | 13 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0022-1694,1879-2707 | 10.1016/j.jhydrol.2019.03.056 | https://doi.org/10.1016/j.jhydrol.2019.03.056 | BIA2015-71197 | Nowadays, alteration of the natural flow regime is considered one the most widespread and damaging impacts for river ecosystems. Hence, increasing our understanding of large-scale hydrological alteration patterns would help us design more effective water use policies. The present study aims to establish general patterns of hydrological alteration caused by dams on a national level, with Spain as a case study. First, we developed a classification of the natural flow regime of the Spanish river network, which served as the reference to assess the degree of hydrological alteration of 139 altered-river gauges. In addition, using the flow series of the altered-river gauges we defined a set of 7 types of altered regimes (TARs), which allowed the stratification of the analyses. The results revealed that the magnitude and direction of hydrological alteration depended on the natural flow class of the altered rivers. In this regard, major effects of dams on Spanish rivers were related to the modification of the intra-annual variability of daily flow, the magnitude of seasonal maximum and minimum flows and the patterns of high flow events. Our results also showed that the distribution of the TARs partially followed a geographic order, but associations between TARs and natural flow classes were not straightforward. In addition, we highlighted that the nature of the hydrological alteration was independent of the registered dam uses. | ||||||||||
| es | ART7677 | Modelling physical characteristics of river habitats | MARIO ALVAREZ CABRIA; FRANCISCO JESUS PEÑAS SILVA; JOSE BARQUIN ORTIZ; Belmar, Oscar; Booker, Doug | River Research and Applications Volume35, Issue7 September 2019 Pages 804-817 | Wiley-Blackwell | 2019-09-01T00:00:00 | 2019 | 14 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1535-1459,1535-1467 | 10.1002/rra.3456 | https://doi.org/10.1002/rra.3456 | CTM2009?07447 ; BIA2015?71197 | The physical characteristics of river habitats constitute the setting in which fluvial biota dwell and thrive. Determining the spatial and temporal patterns of physical habitat characteristics and the main factors that control them is extremely important to increase the efficiency of river management, conservation, and restoration. This study determined spatial patterns of physical habitat characteristics for Atlantic and Mediterranean rivers in northern Spain and developed a river classification based on hydromorphological characteristics. Data gathered from almost 600 sites following a modified version of the River Habitat Survey methodology were used. In addition to the usual River Habitat Survey variables, the sequence of hydromorphologic units (i.e., areas exhibiting similar hydraulic characteristics, in terms of water velocity and depth), water depths, and widths were recorded. Unmodified reaches were selected computing the Habitat Modification Score. Multiple Linear Regression models were employed to test relationships between Principal Component Analyses that summarized physical river habitat characteristics with ecological relevance and environmental variables (i.e., climate, topography, land cover, and geology) at different spatial scales and used to predict physical habitat attributes for all river reaches. The density of hydromorphologic units, flow turbulence, substrate size, and channel dimensions were able to discriminate river classes within the river network, with topography being the main environmental driver of habitat characteristics (although climate, geology, and land cover were also relevant). This classification scheme could constitute a useful tool to restore physical habitat conditions in modified river reaches. | ||||||||||
| es | ART7703 | Effects of altered river network connectivity on the distribution of Salmo trutta: Insights from a metapopulation model | ALEXIA MARIA GONZALEZ FERRERAS; JOSE BARQUIN ORTIZ; Bertuzzo, Enrico; Carraro, Luca; Alonso, Carlos; Rinaldo, Andrea | Freshwater Biology Volume64, Issue11 November 2019 Pages 1877-1895 | Wiley-Blackwell | 2019-11-01T00:00:00 | 2019 | 19 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0046-5070,1365-2427 | 10.1111/fwb.13379 | https://onlinelibrary.wiley.com/doi/full/10.1111/fwb.13379 | BIA-2012-33572 ; BIA-2015-71197 ; BES-2013-06577 ; EEBB-I-15-10186 ; CRSII3_147649 | Network connectivity is a key feature of rivers that affects patterns and processes in lotic ecosystems. Few studies have considered how changes in river reach connectivity might affect ecosystem attributes at a whole river network scale. The use of population dynamics models of keystone species at a river network scale allows exploration of how the effects of altered natural connectivity patterns might propagate through a river network. In this study, we present a metapopulation model to estimate the spatial distribution of the population density of brown trout (Salmo trutta), an ecologically and socioeconomically important top predator, in a river network in northern Spain. The model accounts for the presence of barriers that limit longitudinal connectivity in upstream and downstream directions. The model estimates the spatial distribution of densities of three age?classes (young?of?the?year, juveniles, and adults) in all river reaches that make up the network based on topology, connectivity and population dynamics (e.g. age?class specific mortality, spawning, age?class dispersal, and spawning migration patterns). Seventy?five percent of the modelled population densities fell within the 95% confidence intervals of the empirical data (84.6% for young?of?the?year, 69.2% for juveniles, and 69.2% for adults) collected in 13 reaches. The simulated removal of all longitudinal barriers to migration in the river network (re?naturalisation of the whole catchment) produced a modelled increase in brown trout density in the most downstream reaches of the river network and lowered fish densities in the upstream portion of the network when bias in juvenile and adult movement direction was assumed. Furthermore, the simulated removal of a single obstacle affected fish density even in distant tributaries. The proposed model is an appropriate tool for the evaluation of spatial patterns of brown trout density at a river network scale and for the assessment of the impact of altered connectivity. This might help simulate the results of management strategies regarding river connectivity and show where population decreases or increases could be expected, although empirical knowledge of overall trout movement in the studied river networks is required for drawing realistic scenarios. | ||||||||||
| es | ART7736 | Modelling riparian forest distribution and composition to entire river networks | IGNACIO PEREZ SILOS; JOSE MANUEL ALVAREZ MARTINEZ; JOSE BARQUIN ORTIZ | Applied Vegetation Science, 2019, 22(4), 508-521 | Wiley-Blackwell | 2019-10-01T00:00:00 | 2019 | 14 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1402-2001,1654-109X | 10.1111/avsc.12458 | https://onlinelibrary.wiley.com/doi/full/10.1111/avsc.12458 | Aim: Developing a methodology to map the distribution of riparian forests to entire river networks and determining the main environmental factors controlling their spatial patterns. Location: Cantabrian region, northern Spain. Methods: We mapped the riparian forests at a physiognomic and phytosociological level by delimiting riparian zones and generating vegetation distribution models based on remote sensing data (Landsat 8 OLI and LiDAR PNOA). We built virtual watersheds to define a spatial framework where the catchment environmental information can be specified for each river reach, in combination with the vegetation map. In order to determine the drivers that play a significant role in the observed spatial patterns in riparian forests, based on our data sets we modelled interactions between environmental information and riparian vegetation by using the Random Forest algorithm. Results: The modelling results obtained reliably reproduced the variation of riparian forest structure and composition across Cantabrian watersheds. The produced maps were highly accurate, with a more than 70% overall accuracy for forest occurrence. A clear differentiation between Eurosiberian (habitats 91E0 and 9160) and Mediterranean (92E0) riparian forests was shown on both sides of the mountain range. Topography and land use were the main drivers defining the distribution of riparian forest as a physiognomic unit. In turn, altitude, climate and percentage of pasture were the most relevant factors determining their composition (phytosociological approach). Conclusions: Our study confirms that anthropic control ultimately defines the distribution of vegetation in the riparian area at a regional to local scale. Human disturbances constrain the extension of forest patches across their potential distribution defined by topoclimatic boundaries, which establish a clear limit between Mediterranean and Eurosiberian biogeographical regions. | |||||||||||
| es | ART7737 | Freshwater conservation planning informed and validated by public participation: The Ebro catchment, Spain, as a case study | JOSE BARQUIN ORTIZ; Cañedo-Argüelles, Miguel; Hermoso, Virgilio; Herrera-Grao, Tony; Bonada, Núria | Aquatic Conservation: Marine and Freshwater Ecosystems, 29(8), 1253-1267 | Wiley-Blackwell | 2019-08-01T00:00:00 | 2019 | 15 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1052-7613,1099-0755 | 10.1002/aqc.3108 | https://onlinelibrary.wiley.com/doi/full/10.1002/aqc.3108 | RYC?2013?13979 | Freshwater ecosystems generally lack adequate protection. In this regard, defining clear and objective conservation criteria through public participation is extremely important, as it can greatly enhance the feasibility of the conservation plans by building credibility, salience, and legitimacy. This article presents an exercise of systematic freshwater conservation planning informed and validated by public participation using river protected areas (RPAs) in the Ebro catchment, Spain, as a case study. A public participation process was performed to define the conservation criteria that RPAs should meet, resulting in a detailed list of conservation features and constraints that were poorly covered by the present network of RPAs in Spain. The present network of RPAs failed to adequately protect aquatic biodiversity, as 48% of the taxa did not meet the conservation target, including seven species of vulnerable invertebrates and three of vulnerable fish. marxan was used to identify a minimum set of additional areas that would help to meet the conservation target by adequately representing all conservation features and by increasing the efficiency of the network of protected areas. When marxan was run without restrictions, none of the present RPAs was selected, suggesting that the current network of RPAs is not efficiently meeting the conservation demands expressed through public participation. Overall, this study shows that combining public participation and systematic conservation planning could result in more efficient and enhanced protection of freshwater ecosystems by integrating a wide variety of conservation preferences into the design of RPAs. Also, according to the results, having detailed and updated information on the distribution of invasive and endangered species, as well as increasing the frequency and spatial extension of ecological monitoring, are key to meeting the public demands of enhanced freshwater biodiversity protection and the preservation of sites with high ecological value. | ||||||||||
| es | ART4826 | The role of forest maturity in extreme hydrological events | OSCAR BELMAR DIAZ; JOSE BARQUIN ORTIZ; JOSE MANUEL ALVAREZ MARTINEZ; FRANCISCO JESUS PEÑAS SILVA; MANUEL DEL JESUS PEÑIL | Ecohydrology V.11 Nº4 June 2018 e1947. | John Wiley and Sons Ltd | 2018-06-01T00:00:00 | 2018 | 12 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1936-0584,1936-0592 | 10.1002/eco.1947 | https://onlinelibrary.wiley.com/doi/abs/10.1002/eco.1947 | BIA2012?33572 ; BIA2015?71197 | This study aims to clarify the influence of forests, as well as other prevalent land cover types, on extreme hydrological events through a land cover gradient design. We selected 10 catchments within a gradient of forest land cover, in which there were 15 years of simultaneous daily hydrological and meteorological data, and an additional forest descriptor, forest maturity. The study was developed in a heterogeneous region in the Cantabrian Mountains (NW Spain). This area includes different vegetation types and has a long history of human disturbance and land use change that has produced a gradient in forest cover. This study focuses on regular hydrological extremes: regular floods and low flow events. Specific objectives were to observe the relationship between land cover and extreme hydrological events, once the variance explained by precipitation was removed, and compare the effectiveness of forest coverage and maturity to predict them. Partial correlations and ordinary least square regressions were developed using hydrological indices, obtained from flow records, and hydrological parameters calculated through modelling, using the Identification of unit Hydrographs And Component flows from Rainfall, Evaporation and Streamflow data (IHACRES) software and hydrometeorological data. Land cover characteristics were better able to predict floods than low flows. Forests were associated with less extreme flow events (lower intensity and frequency of floods and greater base flows), whereas shrub formations did the opposite. These results were more evident using forest maturity than using forest coverage. This study indicates that hydrological modelling may benefit in the future from considering not only the coverage of different land cover types but also the conservation status of the different vegetation formations. | ||||||||||
| es | ART5541 | The future of biotic indices in the ecogenomic era: Integrating (e)DNA metabarcoding in biological assessment of aquatic ecosystems | JOSE BARQUIN ORTIZ; Pawlowski, Jan; Kelly-Quinn, Mary; Altermatt, Florian; Apothéloz-Perret-Gentil, Laure; Beja, Pedro; Boggero, Angela; Borja, Ángel; Bouchez, Agnès; Cordier, Tristan; Domaizon, Isabelle; Feio, M.J.; Filipe, A.F.; Fornaroli, Riccardo; Graf, W.; Herder, Jelger; Van Der Hoorn, Berry; Iwan Jones, J.; Ságová-Mareková, M; Kahlert, Maria; Moritz, Christian; Piggott, Jeremy J.; Pinna, Maurizio; Rimet, Frederic; Rinkevich, Buki; Sousa-Santos, Carla; Specchia, Valeria; Trobajo, Rosa; Vasselon, Valentin; Vitecek, Simon; Zimmerman, Jonas; Weigand, Alexander; Leese, Florian; Kahlert, M. | Science of the Total Environment Volumes 637?638, 1 October 2018, Pages 1295-1310 | Elsevier | 2018-10-01T00:00:00 | 2018 | 16 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0048-9697,1879-1026 | 10.1016/j.scitotenv.2018.05.002 | https://doi.org/10.1016/j.scitotenv.2018.05.002 | The bioassessment of aquatic ecosystems is currently based on various biotic indices that use the occurrence and/or abundance of selected taxonomic groups to define ecological status. These conventional indices have some limitations, often related to difficulties in morphological identification of bioindicator taxa. Recent development of DNA barcoding and metabarcoding could potentially alleviate some of these limitations, by using DNA sequences instead of morphology to identify organisms and to characterize a given ecosystem. In this paper, we review the structure of conventional biotic indices, and we present the results of pilot metabarcoding studies using environmental DNA to infer biotic indices. We discuss the main advantages and pitfalls of metabarcoding approaches to assess parameters such as richness, abundance, taxonomic composition and species ecological values, to be used for calculation of biotic indices. We present some future developments to fully exploit the potential of metabarcoding data and improve the accuracy and precision of their analysis. We also propose some recommendations for the future integration of DNA metabarcoding to routine biomonitoring programs. | |||||||||||
| es | ART5557 | Drivers of spatio-temporal patterns of salinity in Spanish rivers: a nationwide assessment | EDURNE ESTEVEZ CAÑO; TAMARA RODRIGUEZ CASTILLO; ALEXIA MARIA GONZALEZ FERRERAS; JOSE BARQUIN ORTIZ; Cañedo-Argüelles, Miguel | Philosophical transactions 3 December 2018 1-10 pp | Royal Society | 2018-12-01T00:00:00 | 2018 | 10 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0962-8436,1471-2970 | 10.1098/rstb.2018.0022 | https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.2018.0022 | The salinization of freshwaters is a global water quality problem that leads to the biological degradation of aquatic ecosystems. However, little is known about the spatial extent of freshwater salinization and the relative contribution of each human activity (e.g. agriculture, urbanization, mining or shale-gas extraction). Here, we investigated environmental factors that explain spatio-temporal patterns of water salinity and examined the causes, the extent and the degree of salinization of Spanish rivers. Results showed a strong variation in water salinity among river typologies and between river reaches in good and poor ecological status according to the Water Framework Directive. The variation in water salinity was largely explained by a combination of natural (i.e. climate and geology) and anthropogenic (i.e. land use) factors. By contrast, land use factors as urbanization and agriculture were the main drivers of salinization, which affected more than one quarter of the rivers and streams in Spain, especially those in the most arid regions (central and southern regions) and in the main courses of the largest rivers such as the Ebro, Douro and Tajo rivers. The information provided here can be relevant to set priority regions and actions to ameliorate freshwater salinization. | |||||||||||
| es | ART5650 | A comparison of modeling techniques to predict hydrological indices in ungauged rivers | JOSE BARQUIN ORTIZ; CESAR ALVAREZ DIAZ; Peñas, Francisco J. | Limnetica, 37 (1): 145-158(2018) | Asociación Ibérica de Limnología | 1900-01-01T00:00:00 | 2018 | 14 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0213-8409,1989-1806 | 10.23818/limn.37.12 | 10902/15892 | HYDRA (Ref. BIA2015-71197-P) | Predicting the natural flow regime in ungauged rivers is an important challenge in water resource management and ecological research. We developed models to predict 16 hydrological indices in a river network covering the northern third of the Iberian Peninsula. Multiple Linear Regression (MLR), Generalized Additive Models (GAMs), Random Forest (RF) and Adaptive Neuro Fuzzy Inference System (ANFIS) were used and compared according to their prediction accuracy. The results showed that predictive performance varied greatly depending on the modeled hydrological attribute. The magnitude and frequency indices were predicted with excellent accuracy. In contrast, no technique was capable of developing precise models for hydrological indices of timing, duration and rate of change. This is mainly related to the lack of proper environmental databases on the scales on which these flow regime patterns are influenced. In addition, complex modeling techniques did not always outperform linear models and no single approach was optimal for all indices. ANFIS and GAMs provided the best results; however, other issues such as computational cost and the level of knowledge required to apply the method and interpret the results should be taken into account. | ||||||||||
| es | ART5699 | La integración del conocimiento sobre la Cordillera Cantábrica: hacia un observatorio inter-autonómico del cambio global | JOSE BARQUIN ORTIZ; JOSE MANUEL ALVAREZ MARTINEZ; ALBERTO GONZALEZ DIEZ; MANUEL DEL JESUS PEÑIL; Jiménez-Alfaro, B.; García, D.l; Vieites, D.; Serrano, E.; Tejón, S.; de Luis Calabuig, E.; Taboada, Á.; Purroy, F.J.; Naves, J.; Fernández-Gil, A.; Serdio, Á.; Lucio, A. Javier; Suárez, R.; Araujo, J. | Ecosistemas 27(1): 96-104 [Enero-Abril 2018] | Asociacion Española de Ecologia Terrestre | 2018-04-01T00:00:00 | 2018 | 9 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1697-2473 | 10.7818/ECOS.1435 | 10902/15928 | La Cordillera Cantábrica (CC) presenta una serie de singularidades que le convierten en un excelente enclave para el seguimiento de los efectos del cambio global. Este estudio analiza la necesidad de generar un observatorio inter-autonómico del cambio global, que permitiría integrar el conocimiento actual sobre estas montañas y determinar las prioridades en la generación de nuevo conocimiento. Para cumplir este objetivo, se presentan dos aproximaciones complementarias. La primera consiste en la revisión de la literatura científica publicada sobre la CC y su comparación con otros enclaves geográficos de la Península Ibérica. La segunda consiste en la síntesis de información de un seminario titulado ?La CC como Centinela de los Efectos del Cambio Global?, celebrado en Santander en agosto de 2015. El análisis bibliográfico muestra que el número de publicaciones científicas sobre la CC es similar al de otros enclaves geográficos de la Península Ibérica, pero con menor riqueza de disciplinas. La producción científica está dominada por los centros de investigación más próximos y tiene una alta participación internacional. Las conclusiones del seminario evidencian que este sistema es un candidato ideal para el seguimiento de los efectos del cambio global sobre multitud de elementos biofísicos. Se considera que la generación de un seminario permanente, junto con la consolidación de las redes de seguimiento actuales, la coordinación de nuevos trabajos, y la mejora de la comunicación entre administraciones y comunidad científico-técnica son elementos esenciales en la futura generación de un observatorio del cambio global en la CC. | |||||||||||
| es | ART5701 | Can training data counteract topographic effects iin supervised image classification? A sensitivity analysis in the Cantabrian Mountains (Spain) | JOSE MANUEL ALVAREZ MARTINEZ; ANA SILIO CALZADA; JOSE BARQUIN ORTIZ | International Journal of Remote Sensing -- Volume 39, 2018 - Issue 23 | Taylor & Francis | 1900-01-01T00:00:00 | 2018 | 25 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0143-1161,1366-5901 | 10.1080/01431161.2018.1489163 | https://www.tandfonline.com/doi/full/10.1080/01431161.2018.1489163 | BIA2012-33572 | Supervised classification converts digital data of satellite imagery into categorical land-cover classes suitable for end users. Far away from being an easy process, many factors such as landscape heterogeneity and topography cause radiometric exchange among classes that needs to be filtered out prior quantitative applications. To address this problem, specific processing methods of image correction allow normalizing surface reflectance of different land-cover types across topographic gradients. However, differences in spectral responses of sunny and shady slopes cannot be related solely to topography, since they could represent a mixture of plant species or functional types on the ground. In these cases, topographic correction may represent an unfounded aggressive modification of original reflectance values that contributes to the ongoing controversy about the adequacy of its application before image classification. An easy alternative to overcome this problem may consist in carrying out an extensive sampling of training data across topographic gradients. This will provide a full description of the spatial (and spectral) variability of the informational classes sought, which is a prior requirement of image classifiers. To evaluate whether a comprehensive sampling of training data can counteract topographic effects in the classification of medium resolution satellite imagery, we evaluated four methodological options: (1) the collection of reference points across all landscape heterogeneity, (2) different sampling schemes of training data, (3) the application, or not, of topographic correction, and (4) the use of different classification algorithms. Results demonstrated that normalizing spectral responses should be applied as a processing step for image classification in rugged terrains, mainly when reference data are not representative of all environmental variability and we do not explore different decision-making for selecting only optimal results. | ||||||||||
| es | ART5702 | Estimating Ecosystem Metabolism to Entire River Networks | TAMARA RODRIGUEZ CASTILLO; EDURNE ESTEVEZ CAÑO; ALEXIA MARIA GONZALEZ FERRERAS; JOSE BARQUIN ORTIZ | Ecosystems (2018) | Springer Nature | 2018-10-01T00:00:00 | 2018 | 20 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1432-9840,1435-0629 | 10.1007/s10021-018-0311-8 | https://link.springer.com/article/10.1007%2Fs10021-018-0311-8 | BIA2015- 71197 | River ecosystem metabolism (REM) is a promising cost-effective measure of ecosystem functioning, as it integrates many different ecosystem processes and is affected by both rapid (primary productivity) and slow (organic matter decomposition) energy channels of the riverine food web. We estimated REM in 41 river reaches in Deva-Cares catchment (northern Spain) during the summer period. We used oxygen mass-balance techniques in which primary production and ecosystem respiration were calculated from oxygen concentration daily curves. Then, we used recently developed spatial statistical methods for river networks based on covariance structures to model REM to all river reaches within the river network. From the observed data and the modeled values, we show how REM spatial patterns are constrained by different river reach characteristics along the river network. In general, the autotrophy increases downstream, although there are some reaches associated to groundwater discharges and to different human activities (deforestation or sewage outflows) that disrupt this pattern. GPP was better explained by a combination of ecosystem size, nitrate concentration and amount of benthic chlorophyll a, whereas ER was better explained by spatial patterns of GPP plus minimum water temperatures. The presented methodological approach improves REM predictions for river networks compared to currently used methods and provides a good framework to orientate spatial measures for river functioning restoration and for global change mitigation. To reduce uncertainty and model errors, a higher density of sampling points should be used and especially in the smaller tributaries. | ||||||||||
| es | ART3319 | Modelling macroinvertebrate and fish biotic indices: From reaches to entire river networks | MARIO ALVAREZ CABRIA; ALEXIA MARIA GONZALEZ FERRERAS; FRANCISCO JESUS PEÑAS SILVA; JOSE BARQUIN ORTIZ | Science of The Total Environment Volume 577, 15 January 2017, Pages 308-318 | Elsevier | 2017-01-01T00:00:00 | 2017 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0048-9697,1879-1026 | 10.1016/j.scitotenv.2016.10.186 | https://doi.org/10.1016/j.scitotenv.2016.10.186 | RIVERLANDS (Ref. BIA2012-33572) ; HYDRA (Ref. BIA2015-71197) | We modelled three macroinvertebrate (IASPT, EPT number of families and LIFE) and one fish (percentage of salmonid biomass) biotic indices to river networks draining a large region (110,000 km2) placed in Northern and Eastern Spain. Models were developed using Random Forest and 26 predictor variables (19 predictors to model macroinvertebrate indices and 22 predictors to model the fish index). Predictor variables were related with different environmental characteristics (water quality, physical habitat characteristics, hydrology, topography, geology and human pressures). The importance and effect of predictors on the 4 biotic indices was evaluated with the IncNodePurity index and partial dependence plots, respectively. Results indicated that the spatial variability of macroinvertebrate and fish indices were mostly dependent on the same environmental variables. They decreased in river reaches affected by high mean annual nitrate concentration (> 4 mg/l) and temperature (> 12 °C), with low flow water velocity (< 0.4 m/s) and aquatic plant communities being dominated by macrophytes. These indices were higher in the Atlantic region than in the Mediterranean. This study provides a continuous image of river biological communities used as indicators, which turns very useful to identify the main sources of change in the ecological status of water bodies and assist both, the integrated catchment management and the identification of river reaches for recovery. | |||||||||||
| es | ART3321 | Analysis of structural and functional indicators for assessing the health state of mountain streams | EDURNE ESTEVEZ CAÑO; TAMARA RODRIGUEZ CASTILLO; MARIO ALVAREZ CABRIA; FRANCISCO JESUS PEÑAS SILVA; ALEXIA MARIA GONZALEZ FERRERAS; MARIA CONSOLACION LEZCANO BASURTO; JOSE BARQUIN ORTIZ | Ecological Indicators Volume 72, January 2017, Pages 553-564 | Elsevier | 2017-01-01T00:00:00 | 2017 | 12 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1470-160X,1872-7034 | 10.1016/j.ecolind.2016.08.052 | https://doi.org/10.1016/j.ecolind.2016.08.052 | RIVERLANDS project (Ref:BIA2012-33572) | Mountain streams play a key role in the conservation of aquatic biodiversity and key ecosystem services; however human activities are threatening these ecosystems as mountain areas become more and more developed and intensively used. Many of these streams are not considered in current national monitoring programs due to their small catchment area. However, assessing their status and monitoring their trends is well needed to ensure their proper management and conservation. In this study, we evaluated the use of a range of indicators related to different ecosystem structural and functional components in 2 streams affected by sewage outflows and compared with an unpolluted stream in the Picos de Europa National Park (Spain). We surveyed benthic periphyton, macroinvertebrate communities and fish assemblages and also estimated periphyton growth rates, wood decomposition rates and river metabolism. Additionally, we compared the performance of the selected indicators in different hydraulic conditions. Results revealed an effect of the organic pollution on most of the functional and structural indicators for the most polluted stream. Only the number of Ephemeroptera, Plecoptera and Trichoptera taxa, the Iberian Biomonitoring Working Party index, the invertebrate multimetric index used by the regional water agency, the fish abundance and biomass were sensitive enough to detect low levels of pollution and followed the expected response to the pollution degree. Moreover, most of the indicators behaved similarly under different hydraulic conditions, without major differences between pools and runs. However, the combination of both pool and run replicates at the reach scale resulted in a higher detection capacity of the effects of organic pollution. | ||||||||||
| es | ART3580 | Effects of sewage effluents and seasonal changes on the metabolism of three Atlantic rivers | TAMARA RODRIGUEZ CASTILLO; JOSE BARQUIN ORTIZ; FRANCISCO JESUS PEÑAS SILVA; MARIO ALVAREZ CABRIA; CESAR ALVAREZ DIAZ | Science of the Total Environment Volumes 599?600, 1 December 2017, Pages 1108-1118 | Elsevier | 2017-12-01T00:00:00 | 2017 | 11 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0048-9697,1879-1026 | 10.1016/j.scitotenv.2017.05.067 | https://doi.org/10.1016/j.scitotenv.2017.05.067 | BIA2015-71197 | Sewage inputs on fluvial ecosystems affect benthic communities and alter trophic networks resulting in changes on river functioning. Functional indicators (e.g. river metabolism) have been proposed as a valuable tool to evaluate ecosystem impairment. In the present study we monitored river metabolism in spring (few days after a major flood) and in summer (after 35 days of low flow conditions) using both single-station and two-stations methods over a 24 h period up and downstream of wastewater treatment plant (WWTP) effluents on three Atlantic river reaches located in northern Spain (Europe). Concurrently with river metabolism, we characterized environmental characteristics (flow, velocity, depth, pH, water temperature, nutrients, etc.), benthic macroinvertebrate communities and biofilm (algae and epilithic biomass). Ecosystem Respiration (ER24) was similar at the different periods and locations, but Gross Primary Productivity (GPP) tended to decrease in impacted reaches (downstream WWTPs) and in summer (except in the Saja River). However, the balance of the metabolic processes showed a trend towards autotrophy in the largest river, while WWTP effluents increased its autotrophy. Chlorophyll a concentration was > 4 times larger in spring than in summer in all river reaches, while epilithic biomass followed a similar but less obvious pattern. Increase of invertebrate scraper densities (mainly, Potamopyrgus antipodarum) seems to be a plausible explanation for biofilm biomass temporal patterns in all sites (higher in spring than in summer), altering GPP and ER24 patterns. Thus, metabolism rates show different responses to WWTP effluents depending on season and on the relationships among functional and structural components, with special focus on the composition and structure of macroinvertebrate communities. Increasing our understanding of cause-effect relationships on the impairment of aquatic ecosystems needs to account for both structural and functional components and their interactions. | ||||||||||
| es | ART3583 | Mapping the temporary and perennial character of whole river networks | ALEXIA MARIA GONZALEZ FERRERAS; JOSE BARQUIN ORTIZ | Water Resources Research Volume 53, Issue 8 Pages 6709-6724 August 2017 | American Geophysical Union (AGU) | 2017-08-01T00:00:00 | 2017 | 16 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0043-1397,1944-7973 | 10.1002/2017WR020390 | 10902/12628 | BIA-2012-33572 ; BIA-2015-71197 | Knowledge of the spatial distribution of temporary and perennial river channels in a whole catchment is important for effective integrated basin management and river biodiversity conservation. However, this information is usually not available or is incomplete. In this study, we present a statistically based methodology to classify river segments from a whole river network (Deva-Cares catchment, Northern Spain) as temporary or perennial. This method is based on an a priori classification of a subset of river segments as temporary or perennial, using field surveys and aerial images, and then running Random Forest models to predict classification membership for the rest of the river network. The independent variables and the river network were derived following a computer-based geospatial simulation of riverine landscapes. The model results show high values of overall accuracy, sensitivity, and specificity for the evaluation of the fitted model to the training and testing data set (?0.9). The most important independent variables were catchment area, area occupied by broadleaf forest, minimum monthly precipitation in August, and average catchment elevation. The final map shows 7525 temporary river segments (1012.5 km) and 3731 perennial river segments (662.5 km). A subsequent validation of the mapping results using River Habitat Survey data and expert knowledge supported the validity of the proposed maps. We conclude that the proposed methodology is a valid method for mapping the limits of flow permanence that could substantially increase our understanding of the spatial links between terrestrial and aquatic interfaces, improving the research, management, and conservation of river biodiversity and functioning. | ||||||||||
| es | ART3584 | Long-term dynamics of a floodplain shallow lake in the Pantanal wetland: Is it all about climate? | ANA SILIO CALZADA; JOSE BARQUIN ORTIZ; FERNANDO JAVIER MENDEZ INCERA; JOSE MANUEL ALVAREZ MARTINEZ; Huszar, Vera L.M.; Mazzeo, Nestor | Science of the Total Environment Volumes 605?606, 15 December 2017, Pages 527-540 | Elsevier | 2017-12-01T00:00:00 | 2017 | 14 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0048-9697,1879-1026 | 10.1016/j.scitotenv.2017.06.183 | https://doi.org/10.1016/j.scitotenv.2017.06.183 | BIA2012-33572 ; CGL2006-10282/HID | Hydrological variability over seasonal and multi-annual timescales strongly shapes the ecological structure and functioning of floodplain ecosystems. The current IPCC climate scenario foresees an increase in the frequency of extreme events. This, in conjunction with other anthropogenic disturbances (e.g., river regulation or land-use changes) poses a serious threat to the natural functioning of these ecosystems. In this study we aimed to i) evaluate the long-term variability of the flooded area of the third largest floodplain lake in the Brazilian Pantanal using remote sensing techniques, and ii) analyze the possible factors influencing this variability. Changes in open-water and riparian floodplain-wetland vegetation areas were mapped by applying an ad hoc-developed remote-sensing method (including a newly developed normalized water index, NWI) to 221 Landsat-Thematic Mapper (TM)/Enhanced Thematic Mapper Plus (ETM +) images, acquired between 1984 and 2011. Added to the lake's natural swing between riparian floodplain-wetland vegetation expansion and retraction, our analyses revealed large interannual changes, grouped into three main periods within the studied time interval. Moreover, our results indicate that this floodplain-lake system is losing open-water area, paired with an increase in riparian floodplain-wetland vegetation. The system's long-term dynamics are not all climate related, but are the result of a combination of drivers. The start of the Manso dam's operation upstream of the studied system, and the subsequent river regulation because of the dam operation, coupled with climatic oscillation appear to be responsible for the observed changes. However, other factors which were not considered in this study might also be important in this process and contributing to the reduction of the system's resilience to droughts (e.g., land-use changes). This study illustrates the serious conservation risks that the Pantanal faces in the near future, given the current climate-change scenario and the accumulation of dam building projects in this region. | ||||||||||
| es | ART3621 | Modelling the area of occupancy of habitat types with remote sensing | JOSE MANUEL ALVAREZ MARTINEZ; JOSE BARQUIN ORTIZ; BARBARA ONDIVIELA EIZAGUIRRE; MARIA RECIO ESPINOSA; ANA SILIO CALZADA; JOSE ANTONIO JUANES DE LA PEÑA; Jiménez-Alfaro, Borja | Methods in ecology and evolution 2017;1?14 | Wiley | 2017-11-01T00:00:00 | 2017 | 14 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 2041-210X | 10.1111/2041-210X.12925 | http://onlinelibrary.wiley.com/doi/10.1111/2041-210X.12925/abstract | A current challenge of biodiversity and conservation is the estimation of the spatial extent of habitat types across broad territories. In the absence of fine-resolution maps, predictive modelling helps in assessing the spatial distribution of vegetation cover. However, such approaches are still uncommon in regional planning and management. Here, we present a framework for mapping the area of occupancy (AOO) of habitat types that allows highly suitable estimates at different scales. We model the potential AOO with abiotic variables related to topography and climate, resulting in broad AOO estimates that are subsequently downscaled to the local AOO with remote sensing. The combination of individual local AOO estimates allows the defining of the realized AOO, comprising locations with a high suitability and low uncertainty for each habitat. We applied this framework to mapping 24 protected habitat types of Natura 2000 sites in northern Spain. Local and realized AOO were highly accurate, with a 70% overall accuracy for the realized AOO. Remote sensing data, and especially LiDAR, were the most important predictors in habitat types related to forests and shrubs, followed by rock outcrops and pastures. Environmental variables were also relevant for specific habitats subject to abiotic constraints. The combination of ecological modelling with remote sensing offers multiple advantages over traditional field surveys and image interpretation, allowing the harmonization of habitat maps across large regions and through time. This is particularly useful for implementing conservation actions under Natura 2000 principles or assessing IUCN criteria for ecosystems. | |||||||||||
| es | ART4384 | PESFOR-W: Improving the design and environmental effectiveness of woodlands for water Payments for Ecosystem Services | JOSE BARQUIN ORTIZ; Valatin, G.; Abildtrup, J.; Accastello, C.; Al-Tawaha, A.; Andreucci, M.; Atanasova, S.; Avdibegovic M,; Baksic, N.; Banasik, K.; Barstad, J.; Bastakova, V.; Becirovic, D.; Begueria, S.; Bethers, U.; Bihunova, M.; Blagojevic, B.; Bösch, M.; Bournaris, T.; Cao, Y. | Research Ideas and Outcomes 3: e13828 | Pensoft Publishers | 2017-05-01T00:00:00 | 2017 | 28 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 2367-7163 | 10.3897/rio.3.e13828 | 10902/13470 | The EU Water Framework Directive aims to ensure restoration of Europe?s water bodies to ?good ecological status? by 2027. Many Member States will struggle to meet this target, with around half of EU river catchments currently reporting below standard water quality. Diffuse pollution from agriculture represents a major pressure, affecting over 90% of river basins. Accumulating evidence shows that recent improvements to agricultural practices are benefiting water quality but in many cases will be insufficient to achieve WFD objectives. There is growing support for land use change to help bridge the gap, with a particular focus on targeted tree planting to intercept and reduce the delivery of diffuse pollutants to water. This form of integrated catchment management offers multiple benefits to society but a significant cost to landowners and managers. New economic instruments, in combination with spatial targeting, need to be developed to ensure cost effective solutions ? including tree planting for water benefits - are realised. Payments for Ecosystem Services (PES) are flexible, incentive-based mechanisms that could play an important role in promoting land use change to deliver water quality targets. The PESFOR-W COST Action will consolidate learning from existing woodlands for water PES schemes in Europe and help standardize approaches to evaluating the environmental effectiveness and cost-effectiveness of woodland measures. It will also create a European network through which PES schemes can be facilitated, extended and improved, for example by incorporating other ecosystem services linking with aims of the wider forestscarbon policy nexus. | |||||||||||
| es | ART4391 | Local environment rather than past climate determines community composition of mountain stream macroinvertebrates across Europe | MARIO ALVAREZ CABRIA; JOSE BARQUIN ORTIZ; Múrria, Cesc; Bonada, Nuria; Vellend, Mark; Zamora-Muñoz, Carmen; Alba-Tercedor, Javier; Sainz-Cantero, Carmen Elisa; Garrido, Josefina; Acosta, Raul; El Alami, Majida; Derka, Tomás; Sáinz Bariain, Marta; Filipe, Ana F.; Vogler, Alfried P. | Molecular Ecology Volume 26, Issue 21 Pages: 5869-6183 November 2017 | Wiley-Blackwell Publishing Ltd | 2017-11-01T00:00:00 | 2017 | 15 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0962-1083,1365-294X | 10.1111/mec.14346 | https://onlinelibrary.wiley.com/doi/abs/10.1111/mec.14346 | Community assembly is determined by a combination of historical events and contemporary processes that are difficult to disentangle, but eco?evolutionary mechanisms may be uncovered by the joint analysis of species and genetic diversity across multiple sites. Mountain streams across Europe harbour highly diverse macroinvertebrate communities whose composition and turnover (replacement of taxa) among sites and regions remain poorly known. We studied whole?community biodiversity within and among six mountain regions along a latitudinal transect from Morocco to Scandinavia at three levels of taxonomic hierarchy: genus, species and haplotypes. Using DNA barcoding of four insect families (>3100 individuals, 118 species) across 62 streams, we found that measures of local and regional diversity and intraregional turnover generally declined slightly towards northern latitudes. However, at all hierarchical levels we found complete (haplotype) or high (species, genus) turnover among regions (and even among sites within regions), which counters the expectations of Pleistocene postglacial northward expansion from southern refugia. Species distributions were mostly correlated with environmental conditions, suggesting a strong role of lineage? or species?specific traits in determining local and latitudinal community composition, lineage diversification and phylogenetic community structure (e.g., loss of Coleoptera, but not Ephemeroptera, at northern sites). High intraspecific genetic structure within regions, even in northernmost sites, reflects species?specific dispersal and demographic histories and indicates postglacial migration from geographically scattered refugia, rather than from only southern areas. Overall, patterns were not strongly concordant across hierarchical levels, but consistent with the overriding influence of environmental factors determining community composition at the species and genus levels. | |||||||||||
| es | CAP2684 | Afforestation in a catchment context and its use as Green Infrastructure | JOSE MANUEL ALVAREZ MARTINEZ; IGNACIO PEREZ SILOS; FRANCISCO JESUS PEÑAS SILVA; ANA SILIO CALZADA; JOSE BARQUIN ORTIZ | 10th Symposium for European Freshwater Sciences Abstract Book | 1900-01-01T00:00:00 | 2017 | CNF | Comunicación a Congreso | Comunicación a Congreso | Conference object | https://www.freshwatersciences.eu/files/Abstract_book_SEFS10.pdf | ||||||||||||||||||
| es | CAP2685 | Catchment land cover alteration of food resources affects stream community size spectrum | TOM J. BATTIN; EDURNE ESTEVEZ CAÑO; MARIO ALVAREZ CABRIA; JOSE BARQUIN ORTIZ; Larrañaga, Aitor | 10th Symposium for European Freshwater Sciences Abstract Book | 1900-01-01T00:00:00 | 2017 | LCT | Capítulo de libro | Capítulo de libro | Book part | https://www.freshwatersciences.eu/files/Abstract_book_SEFS10.pdf | ||||||||||||||||||
| es | CAP2687 | Analysis of Spatial Patterns in Fish Size Spectrum Through Spatial Network Models | FRANCISCO JESUS PEÑAS SILVA; EDURNE ESTEVEZ CAÑO; JOSE BARQUIN ORTIZ; ALEXIA MARIA GONZALEZ FERRERAS | 10th Symposium for European Freshwater Sciences Abstract Book | 1900-01-01T00:00:00 | 2017 | CNF | Comunicación a Congreso | Comunicación a Congreso | Conference object | https://www.freshwatersciences.eu/files/Abstract_book_SEFS10.pdf | BIA2012-33572 | |||||||||||||||||
| es | ART3065 | Assessing hydrologic alteration: Evaluation of different alternatives according to data availability | FRANCISCO JESUS PEÑAS SILVA; JOSE BARQUIN ORTIZ; CESAR ALVAREZ DIAZ | Ecological Indicators Volume 60, January 2016, Pages 470-482 | Elsevier | 2016-01-01T00:00:00 | 2016 | 13 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1470-160X,1872-7034 | 10.1016/j.ecolind.2015.07.021 | https://doi.org/10.1016/j.ecolind.2015.07.021 | MARCE project (Ref:CTM-2009-07447 | The natural flow regime of rivers across the world has been largely modified. Understanding the extent to which the flow regime deviates from natural conditions is necessary for designing sound management and restoration measures. In this regard, ?Indicators of Hydrologic Alteration? is currently considered one of the most effective approaches for assessing hydrologic alteration (HA). However, several generalized drawbacks such as the climatic variability between the pre- and post-impacted series and the scarcity of hydrological data in many impaired rivers should be addressed. In this study, a protocol with the following five alternative designs based on data availability is presented: (1) Paired-Before?After Control?Impact (BACIP), (2) Before?After (BA), (3) Control?Impact (CI), (4) Hydrological Classification (HC) and (5) Predicted Hydrological indices (HP). BACIP compares the status of the impacted gauge before and after the perturbation is started, in addition to controlling for natural climatic changes. Hence, it has been considered as the reference benchmark for all other designs. When this protocol was applied to 11 reservoirs situated in the northern third of the Iberian Peninsula, the BA design was able to correctly identify most of the non-significant HA but failed in almost one quarter of the significant alterations. Similarly, BACIP and CI showed an agreement of >80%. This suggests that the method is suitable when proper data are unavailable for BACIP or BA. In addition, our results indicated that the critical thresholds for HA varied depending on the hydrological index being considered. Significant HAs ranged from <5% for the number of days with increasing and decreasing flows to >64% for the duration of low-flow pulses. To delineate adequate thresholds, further research combining hydrological analyses with the biological response to the HA is warranted. Finally, the application of HC and HP designs revealed a significant degree of uncertainty related to the intra-class variability and the predictive error of the models. Therefore, 25% of the analysis could not be evaluated. However, in the evaluable cases, the HC and HP designs correctly assessed >75% of the HA, which highlighted the potential of this method in cases of scarce streamflow data. | ||||||||||
| es | ART3079 | Modelling the spatial and seasonal variability of water quality for entire river networks: Relationships with natural and anthropogenic factors | MARIO ALVAREZ CABRIA; JOSE BARQUIN ORTIZ; FRANCISCO JESUS PEÑAS SILVA | Science of the Total Environment Volumes 545?546, 1 March 2016, Pages 152-162 | Elsevier | 2016-03-01T00:00:00 | 2016 | 11 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0048-9697,1879-1026 | 10.1016/j.scitotenv.2015.12.109 | https://doi.org/10.1016/j.scitotenv.2015.12.109 | MARCE (Ref. CTM-2009-07447) ; RIVERLANDS (Ref. BIA2012-33572) | We model the spatial and seasonal variability of three key water quality variables (water temperature and concentration of nitrates and phosphates) for entire river networks in a large area in northern Spain. Models were developed with the Random Forest technique, using 12 (water temperature and nitrate concentration) and 15 (phosphate concentration) predictor variables as descriptors of several environmental attributes (climate, topography, land-uses, hydrology and anthropogenic pressures). The effect of the different predictors on the response variables was assessed with partial dependence plots and partial correlation analysis. Results indicated that land-uses were important predictors in defining the spatial and seasonal patterns of these three variables. Water temperature was positively related with air temperature and the upstream drainage area, whereas increases in forest cover decreased water temperature. Nitrate concentration was mainly related to the area covered by agricultural land-uses, increasing in winter, probably because of catchment run-off processes. On the other hand, phosphate concentration was highly related to the area covered by urban land-uses in the upstream catchment and to the proximity of the closest upstream effluent. Phosphate concentration increased notably during the low flow period (summer), probably due to the reduction of the dilution capacity. These results provide a large-scale continuous picture of water quality, which could help identify the main sources of change in water quality and assist in the prioritization of river reaches for restoration projects. | ||||||||||
| es | ART3142 | Building Virtual Watersheds: A Global Opportunity to Strengthen Resource Management and Conservation | JOSE BARQUIN ORTIZ; Benda, Lee; Miller, Daniel; McCleary, Richard; Cai, TiJiu; Ji, Y. | Environmental Management March 2016, Volume 57, Issue 3, pp 722?739 | Springer | 2016-03-01T00:00:00 | 2016 | 18 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0364-152X,1432-1009 | 10.1007/s00267-015-0634-6 | https://link.springer.com/article/10.1007/s00267-015-0634-6 | Modern land-use planning and conservation strategies at landscape to country scales worldwide require complete and accurate digital representations of river networks, encompassing all channels including the smallest headwaters. The digital river networks, integrated with widely available digital elevation models, also need to have analytical capabilities to support resource management and conservation, including attributing river segments with key stream and watershed data, characterizing topography to identify landforms, discretizing land uses at scales necessary to identify human-environment interactions, and connecting channels downstream and upstream, and to terrestrial environments. We investigate the completeness and analytical capabilities of national to regional scale digital river networks that are available in five countries: Canada, China, Russia, Spain, and United States using actual resource management and conservation projects involving 12 university, agency, and NGO organizations. In addition, we review one pan-European and one global digital river network. Based on our analysis, we conclude that the majority of the regional, national, and global scale digital river networks in our sample lack in network completeness, analytical capabilities or both. To address this limitation, we outline a general framework to build as complete as possible digital river networks and to integrate them with available digital elevation models to create robust analytical capabilities (e.g., virtual watersheds). We believe this presents a global opportunity for in-country agencies, or international players, to support creation of virtual watersheds to increase environmental problem solving, broaden access to the watershed sciences, and strengthen resource management and conservation in countries worldwide. | |||||||||||
| es | ART3156 | Integration of habitat models to predict fish distributions in several watersheds of Northern Spain | FRANCISCO JESUS PEÑAS SILVA; ALEXIA MARIA GONZALEZ FERRERAS; JOSE BARQUIN ORTIZ | Journal of Applied Ichthyology Volume 32, Issue 1 February 2016 Pages 204-216 | Blackwell | 2016-02-01T00:00:00 | 2016 | 13 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1439-0426,0175-8659 | 10.1111/jai.13024 | http://onlinelibrary.wiley.com/doi/10.1111/jai.13024/full | MARCE (Ref: CTM-2009-07447) ; Grant Number: 132/2010 ; BIA-2012-33572 ; BES-2013-065770 ; RYC-2011-08313 | Species distribution models and consensus models allow knowing the distribution of species in large areas where there is no field data and identifying the most important drivers for those distributions. In this study, seven individual models were used to obtain a consensus model to determine the potential distribution for six freshwater fish species in several watersheds of Northern Spain. Moreover, three different methods of model evaluation were used for performance comparison. Fish data were obtained from databases provided by different organisms related to aquatic systems containing information on 759 field sites sampled between October 2002 and June 2011 using electrofishing techniques. Dependent variables were obtained after filtering field sites according to a human pressure gradient analysis, while independent variables were derived from a Synthetic River Network for the study area. The ?best? individual models were obtained using Random Forest, Generalized Boosted Models and Generalized Additive Models, but with differing results among species and evaluation methods. The different consensus models revealed a high degree of adjustment between modelled and observed data. The most important factors related to fish distributions were the width of the valley floor, mean annual flow, average catchment elevation, distance to the sea, and total catchment area. The importance and critical limits of presence-absence for these key variables differed among species. Use of these models could assist in the prioritization and selection of specific catchment and river reach actions for fish population management, restoration and/or conservation. | ||||||||||
| es | ART3174 | Sources of variation in hydrological classifications: Time scale, flow series origin and classification procedure | FRANCISCO JESUS PEÑAS SILVA; JOSE BARQUIN ORTIZ; CESAR ALVAREZ DIAZ | Journal of Hydrology Volume 538, July 2016, Pages 487-499 | Elsevier | 2016-07-01T00:00:00 | 2016 | 13 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0022-1694,1879-2707 | 10.1016/j.jhydrol.2016.04.049 | https://doi.org/10.1016/j.jhydrol.2016.04.049 | RIVERLANDS (Ref. BIA2012-33572) ; HYDRA (Ref: BIA2015-71197) | Classification of flow regimes in water management and hydroecological research has grown significantly in recent years. However, depending on available data and the procedures applied, there may be several credible classifications for a specific catchment. In this study, three inductive classifications derived from different initial flow data and one expert-driven classification were defined. The hydrological interpretation, statistical performance and spatial correspondence of these classifications were compared. Daily Gauged Classification (DC) was derived from daily flow data while Monthly Gauged Classification (MC) and Monthly Modeled Classification (MMC) were derived from monthly flow series, using gauged and modeled flow data, respectively. Expert-Driven Classification (EDC) was based on a Spanish nationwide hydrological classification, which is being used in the current River Basin Management Plans. The results showed that MC accounted for much of the critical hydrological information variability comprised within the DC. However, it also presented limitations regarding the inability to represent important hydroecological attributes, especially those related to droughts and high flow events. In addition, DC and MC presented an equivalent performance more than 60% of the time and obtained a mean ARI value of 0.4, indicating a similar classification structure. DC and MC outperformed MMC 100% and more than 50% of the times when they were compared by means of the classification strength and ANOVA, respectively. MMC also showed low correspondence with these classifications (ARI = 0.20). Thus, the use of modeled flow series should be limited to poorly gauged areas. Finally, the significantly reduced performance and the uneven distribution of classes found in EDC questions its application for different management objectives. This study shows that the selection of the most suitable approach according to the available data has significant implications for the classification uses. Therefore, caution is recommended, especially if classifications are to be use in a normative manner. | ||||||||||
| es | ART3342 | The structuring role of free-floating plants on the fish community in a tropical shallow lake: an experimental approach with natural and artificial plants | JOSE BARQUIN ORTIZ; ANA SILIO CALZADA; Teixeira-de Mello, Franco; de Oliveira, Valdeci Antonio; Loverde-Oliveira, Simoni Maria; Huszar, Vera Lucia M.; Iglesias, Carlos; Freire Silva, Thiago Sanna; Duque-Estrada, Carlos Henrique; Mazzeo, Néstor | Hydrobiologia September 2016, Volume 778, Issue 1, pp 167-178 | Springer | 2016-09-01T00:00:00 | 2016 | 12 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1573-5117,0018-8158 | 10.1007/s10750-015-2447-2 | http://dx.doi.org/10.1007/s10750-015-2447-2 | Free-floating plants are important components of aquatic ecosystems in tropical climates, playing a key role in the structure and spatial distribution of fish communities. This study aims at elucidating the potential effects of free-floating vegetation on fish community structure in a tropical floodplain lake, using an experimental approach based on natural and artificial devices (Eichhornia crassipes), in high and low (LT) turbidity waters. A total of 32 fish species were found, richness, abundance, biomass, mean fresh body weight, and standard length were all significantly higher in the LT regions. Although no significant differences of community traits were found between artificial and natural substrates, regardless of water turbidity, fish composition differences between devices were observed in clear waters. Benthivorous fishes were the most widespread trophic group, with higher abundance and biomass in LT, while no differences were found among plant types. The results confirmed the structural role played by free-floating plants in the fish community by offering a refuge to smaller bodied fish species and younger specimens of larger species, independently of turbidity conditions. However, the effect was stronger in clear waters. The evidence also supported the hypothesis that the fish community forages within the plant beds. Turbidity spatial gradients or turbid regimes in tropical shallow lakes, as well as important floating macrophyte coverage could have strong impacts on the fish community structure. | |||||||||||
| es | CAP2381 | Analysing the Structure and Composition of Invertebrate Communities in Relation to Feeding Resources | MARIO ALVAREZ CABRIA; EDURNE ESTEVEZ CAÑO; ALEXIA MARIA GONZALEZ FERRERAS; MARIA CONSOLACION LEZCANO BASURTO; JOSE BARQUIN ORTIZ | Limnología 2016: XVIII Congress of the Iberian Association of Limnology. Book of Abstracts | AIL: Asociacción Ibérica de Limnología | 1900-01-01T00:00:00 | 2016 | CNF | Comunicación a Congreso | Comunicación a Congreso | Conference object | https://www.limnetica.com/documentos/congresos/Book_of_abstracts_Tortosa2016.pdf | |||||||||||||||||
| es | CAP2382 | Catchment Land Cover Effects on Stream Food Webs Via Energy Source Alteration | MARIA CONSOLACION LEZCANO BASURTO; MARIO ALVAREZ CABRIA; EDURNE ESTEVEZ CAÑO; JOSE BARQUIN ORTIZ; Battin, Tom | Limnología 2016: XVIII Congress of the Iberian Association of Limnology. Book of Abstracts | AIL: Asociacción Ibérica de Limnología | 1900-01-01T00:00:00 | 2016 | CNF | Comunicación a Congreso | Comunicación a Congreso | Conference object | https://www.limnetica.com/documentos/congresos/Book_of_abstracts_Tortosa2016.pdf | |||||||||||||||||
| es | CAP2383 | Modelling Metapopulation Dynamics for Salmo Trutta on River Networks | ALEXIA MARIA GONZALEZ FERRERAS; JOSE BARQUIN ORTIZ; Bertuzzo, Enrico; Rinaldo, Andrea | Limnología 2016: XVIII Congress of the Iberian Association of Limnology. Book of Abstracts | AIL: Asociacción Ibérica de Limnología | 1900-01-01T00:00:00 | 2016 | CNF | Comunicación a Congreso | Comunicación a Congreso | Conference object | https://www.limnetica.com/documentos/congresos/Book_of_abstracts_Tortosa2016.pdf | |||||||||||||||||
| es | CAP2384 | A Methodological Approach to Simulate Climate Changes Effects in Atlantic Riparian Forests | JOSE MANUEL ALVAREZ MARTINEZ; IGNACIO PEREZ SILOS; JOSE BARQUIN ORTIZ | Limnología 2016: XVIII Congress of the Iberian Association of Limnology. Book of Abstracts | AIL: Asociacción Ibérica de Limnología | 1900-01-01T00:00:00 | 2016 | CNF | Comunicación a Congreso | Comunicación a Congreso | Conference object | https://www.limnetica.com/documentos/congresos/Book_of_abstracts_Tortosa2016.pdf | |||||||||||||||||
| es | CAP2385 | Do Reservoirs With a Similar Operation Rule Produce Always the Same Effect? Patterns of Hydrological Alteration in the Iberian Peninsula | FRANCISCO JESUS PEÑAS SILVA; OSCAR BELMAR DIAZ; JOSE BARQUIN ORTIZ | Limnología 2016: XVIII Congress of the Iberian Association of Limnology. Book of Abstracts | AIL: Asociacción Ibérica de Limnología | 1900-01-01T00:00:00 | 2016 | CNF | Comunicación a Congreso | Comunicación a Congreso | Conference object | https://www.limnetica.com/documentos/congresos/Book_of_abstracts_Tortosa2016.pdf | |||||||||||||||||
| es | CAP2425 | Biotic Controls on River Ecosystem Functioning: The Role of Key Species | JOSE BARQUIN ORTIZ; TAMARA RODRIGUEZ CASTILLO; EDURNE ESTEVEZ CAÑO | Libro de Resúmenes I Congreso Iberoamericano de Limnología y XIII Congreso de la Sociedad Chilena de Limnología | 1900-01-01T00:00:00 | 2016 | 45 | CNF | Comunicación a Congreso | Comunicación a Congreso | Conference object | https://sitiosciencias.uach.cl/cil2016/wp-content/uploads/2016/12/Libro-de-Resumenes-web_BAJA_definitivo.pdf | |||||||||||||||||
| es | ART1658 | Coupling virtual watersheds with ecosystem services assessment: A 21st century platform to support river research and management | JOSE BARQUIN ORTIZ; Benda, Lee; Villa, Ferdinando; Brown, Lee; Bonada, Nuria; Vieites, David; Battin, Tom; Olden, Julian; Hughes, Samantha Jane; Gray, Clare | Wiley Interdisciplinary Reviews: Water Volume 2, Issue 6 November/December 2015 Pages 609–621 | John Wiley & Sons | 2015-09-10T00:00:00 | 2015 | 22 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 2049-1948 | 10.1002/wat2.1106 | http://onlinelibrary.wiley.com/doi/10.1002/wat2.1106/abstract | 10902/10282 | BIA2012-33572 | The demand for freshwater is projected to increase worldwide over the coming decades, resulting in severe water stress and threats to riverine biodiversity, ecosystem functioning, and services. A major societal challenge is to determine where environmental changes will have the greatest impacts on riverine ecosystem services and where resilience can be incorporated into adaptive resource planning. Both water managers and scientists need new integrative tools to guide them toward the best solutions that meet the demands of a growing human population but also ensure riverine biodiversity and ecosystem integrity. Resource planners and scientists could better address a growing set of riverine management and risk mitigation issues by (1) using a ‘virtual watersheds’ approach based on improved digital river networks and better connections to terrestrial systems, (2) integrating virtual watersheds with ecosystem services technology (ARtificial Intelligence for Ecosystem Services: ARIES), and (3) incorporating the role of riverine biotic interactions in shaping ecological responses. This integrative platform can support both interdisciplinary scientific analyses of pressing societal issues and effective dissemination of findings across river research and management communities. It should also provide new integrative tools to identify the best solutions and trade-offs to ensure the conservation of riverine biodiversity and ecosystem services. | |||||||||
| es | CAP1002 | Optimización de las redes de seguimiento del estado de conservación en rios de alta montaña | JOSE BARQUIN ORTIZ; FRANCISCO JESUS PEÑAS SILVA; MARIO ALVAREZ CABRIA; TAMARA RODRIGUEZ CASTILLO; ALEXIA MARIA GONZALEZ FERRERAS; EDURNE ESTEVEZ CAÑO; MARIA CONSOLACION LEZCANO BASURTO; FELIPE FERNANDEZ PEREZ; JORGE ROJO GOMEZ; ANDRES GARCIA GOMEZ; CESAR ALVAREZ DIAZ | Proyectos de investigación en parques nacionales : 2010-2013 | Organismo Autónomo de Parques Nacionales | 1900-01-01T00:00:00 | 2015 | -25 | 35 | 59 | LCT | Capítulo de libro | Capítulo de libro | Book part | 978-84-8014-870-2 | ||||||||||||||
| es | CAP2356 | Estimating Ecosystem Metabolism For Entire River Networks | JOSE BARQUIN ORTIZ; TAMARA RODRIGUEZ CASTILLO; EDURNE ESTEVEZ CAÑO; ALEXIA MARIA GONZALEZ FERRERAS; MARIO ALVAREZ CABRIA; FRANCISCO JESUS PEÑAS SILVA; OSCAR BELMAR DIAZ | 9th Symposium for European Freshwater Sciences Abstract Book | Université de Gèneve | 1900-01-01T00:00:00 | 2015 | CNF | Comunicación a Congreso | Comunicación a Congreso | Conference object | https://www.freshwatersciences.eu/files/Abstract_book_SEFS9.pdf | |||||||||||||||||
| es | CAP2370 | Using Hydroscapes to maximize the benefits of riparian corridor restoration for multiple river ecosystem services | JOSE BARQUIN ORTIZ; MARIO ALVAREZ CABRIA; FRANCISCO JESUS PEÑAS SILVA; ANA SILIO CALZADA; JOSE MANUEL ALVAREZ MARTINEZ; OSCAR BELMAR DIAZ; Benda, Lee; Miller, Daniel | Proceedings of the International Conference on River and Stream Restoration Novel Approaches to Assess and Rahabilitate Modified Rivers (2015 : Wageningen) | 1900-01-01T00:00:00 | 2015 | CNF | Comunicación a Congreso | Comunicación a Congreso | Conference object | https://reformrivers.eu/system/files/REFORM%202015_Book%20of%20Abstracts_FINAL%20rev%2020150828%20incl%20covers.pdf | ||||||||||||||||||
| es | ART1426 | Integration of hydrological and habitat simulation methods to define minimum environmental flows at the basin scale | FRANCISCO JESUS PEÑAS SILVA; JOSE ANTONIO JUANES DE LA PEÑA; MARIO ALVAREZ CABRIA; CESAR ALVAREZ DIAZ; ANDRES GARCIA GOMEZ; MARIA ARACELI PUENTE TRUEBA; JOSE BARQUIN ORTIZ | Water and Environment Journal V. 28, Issue 2 Pages 252–260 | Blackwell Publishing Ltd | 2014-06-01T00:00:00 | 2014 | 9 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1747-6585,1747-6593 | 10.1111/wej.12030 | http://onlinelibrary.wiley.com/doi/10.1111/wej.12030/full | CGL2006-10282 | New environmental policies establish the need to maintain the ecological integrity of freshwater ecosystems. The hydrologic regime is a key element in determining river processes and therefore the definition of environmental flow regimes (EFR) is essential to achieve this goal. The EFR can be broadly defined as the water required to sustain freshwater and estuarine ecosystems, and the human livelihood that depend on these ecosystems. Nevertheless, the role of the EFR and the methods to calculate them has not been clearly stated in many countries. This paper sets out a procedure to calculate EFRs, which includes not only a minimum flow, but also a temporal variability of this flow. The procedure integrates the results of hydrologic and habitat simulation methods in a temporal scale that takes into consideration the natural hydrologic seasonality while providing a certain level of flexibility to regulate water resources still meeting the requirements of the Spanish Water Planning legislation. The results highlighted the advantages of using different methodological approaches to calculate EFRs. Therefore, this study concludes the validity of a relatively simple hydrologic method for defining minimum environmental flows at a period of maximum hydrologic stress, but also the need to consider different approaches to take into account as many ecosystem elements as possible. | ||||||||||
| es | ART1612 | Land-use coverage as an indicator of riparian quality | JOSE BARQUIN ORTIZ; MARIO ALVAREZ CABRIA; FRANCISCO JESUS PEÑAS SILVA; Fernandez, Diego | Ecological Indicators 41 (2014) 165–174 | Elsevier | 1900-01-01T00:00:00 | 2014 | 10 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1470-160X,1872-7034 | http://dx.doi.org/10.1016/j.ecolind.2014.02.008 | CTM-2009-07447 | Sustaining or restoring riparian quality is essential to achieve and maintain good stream health, as well as to guarantee the ecological functions that natural riparian areas provide. Therefore, quantifying riparian quality is a fundamental step to identify river reaches for conservation and/or restoration purposes. Most of the existing methods assessing riparian quality concentrate on field surveys of a few hundreds of metres, which become very laborious when trying to evaluate whole catchments or long river corridors. Riparian quality assessment obtains higher scores when riparian vegetation consists of forested areas, while land-uses lacking woody vegetation typically represent physical and functional discontinuities along river corridors that undermine riparian quality. Thus, this study aimed to analyse the ability of riparian land-cover data for modelling riparian quality over large areas. Multiple linear regression and Random Forest techniques were performed using land-use datasets at three different spatial scales: 1:5000 (Cantabrian Riparian Cover map), 1:25,000 (Spanish Land Cover Information System) and 1:100,000 (Corine Land Cover). Riparian quality field data was obtained using the Riparian Quality Index. Hydromorphological pressures affecting riparian vegetation were also included in the analysis to determine their relative weight in controlling riparian quality. Linear regression showed better predictive ability than Random Forest, although this may be due to our relatively small dataset (approx. 150 cases). Forest coverage highly determined riparian quality, while hydromorphological pressures and land-use coverage related to human activities played a smaller role in the models. While acceptable results were obtained when using high-resolution datasets, the use of Corine Land Cover led to a poor predictive ability. | |||||||||||
| es | ART1614 | Periphyton control on stream invertebrate diversity: is periphyton architecture more important than biomass? | JOSE BARQUIN ORTIZ; Tonkin, Jonathan D.; Death, Russell G. | Marine and Freshwater Research, 2014, 65, 818–829 | Commonwealth Scientific and Industrial Research Organisation (CSIRO) | 1900-01-01T00:00:00 | 2014 | 12 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1323-1650,1448-6059 | http://dx.doi.org/10.1071/MF13271 | http://www.publish.csiro.au/mf/MF13271 | There is little consensus on the form of the periphyton biomass-macroinvertebrate diversity relationship in streams. One factor that these relationships do not account for is the growth form of primary producers. We (1) examined the periphyton biomass-macroinvertebrate diversity relationship in 24 streams of Cantabria, Spain, in July 2007, and (2) determined whether this relationship was underpinned, and better explained, by specific responses to the growth form of the periphyton community. We hypothesised that macroinvertebrate diversity would be a log-linear function of periphyton biomass and would respond differently to two coarse divisions of the periphytic community; i.e. positively to %cover of non-filamentous algae and negatively to %cover of streaming filamentous algae. There was no relationship between benthic periphyton biomass and macroinvertebrate diversity in these streams but, as predicted, this relationship was underpinned by responses to the growth form of periphyton community. Generally, macroinvertebrate diversity responded positively to %cover of non-filaments and negatively to %cover of streaming filaments, although results were variable. These findings suggest that periphyton biomass-macroinvertebrate diversity relationships in streams can be underpinned by interactions with specific growth forms of periphyton. We suggest that further research is required to develop robust thresholds of %cover of filamentous algae cover that would benefit managers wishing to minimise negative effects of eutrophication on stream communities. | |||||||||||
| es | ART1615 | The influence of methodological procedures on hydrological classification performance | CESAR ALVAREZ DIAZ; FRANCISCO JESUS PEÑAS SILVA; JOSE BARQUIN ORTIZ; Snelder, T. H.; Booker, D. J. | Hydrol. Earth Syst. Sci., 18, 3393–3409, 2014 | European Geosciences Union (EGU) | 1900-01-01T00:00:00 | 2014 | 17 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1027-5606,1607-7938 | 10.5194/hess-18-3393-2014 | 10902/10241 | MARCE CTM-2009-07447 ; RECORAM 132/2010 | Hydrological classification has emerged as a suitable procedure to disentangle the inherent hydrological complexity of river networks. This practice has contributed to determining key biophysical relations in fluvial ecosystems and the effects of flow modification. Thus, a plethora of classification approaches, which agreed in general concepts and methods but differed largely in specific procedures, have emerged in the last decades. However, few studies have compared the implication of applying contrasting approaches and specifications over the same hydrological data. In this work, using cluster analysis and modelling approaches, we classify the entire river network covering the northern third of the Iberian Peninsula. Specifically, we developed classifications of increasing level of detail, ranging from 2 to 20 class levels, either based on raw and normalized daily flow series and using two contrasting approaches to determine class membership: classify-then-predict (ClasF) and predict-thenclassify (PredF). Classifications were compared in terms of their statistical strength, the hydrological interpretation, the ability to reduce the bias associated with underrepresented parts of the hydrological space and their spatial correspondnece. The results highlighted that both the data processing and the classification strategy largely influenced the classification outcomes and properties, although differences among procedures were not always statistically significant. The normalization of flow data removed the influence of flow magnitude and generated more complex classifications in which a wider range of hydrologic characteristics were considered. The application of the PredF strategy produced, in most of the cases, classifications with higher discrimination ability and presented greater ability to deal with the presence of distinctive gauges in the data set than using the ClasF strategy. | ||||||||||
| es | CAP2391 | Analysing the spatial distribution of invertebrate communities under the neutral theory | MARIO ALVAREZ CABRIA; FRANCISCO JESUS PEÑAS SILVA; EDURNE ESTEVEZ CAÑO; ALEXIA MARIA GONZALEZ FERRERAS; TAMARA RODRIGUEZ CASTILLO; ANA SILIO CALZADA; JOSE MANUEL ALVAREZ MARTINEZ; MARIA CONSOLACION LEZCANO BASURTO; JOSE BARQUIN ORTIZ | Limnología 2014: XVII Congress of the Iberian Association of Limnology. Book of Abstracts | AIL: Asociacción Ibérica de Limnología | 1900-01-01T00:00:00 | 2014 | CNF | Comunicación a Congreso | Comunicación a Congreso | Conference object | https://www.limnetica.com/documentos/congresos/congreso-2014-santander.pdf | |||||||||||||||||
| es | CAP2392 | A remote-sensing based approach for evaluating land cover change effects on hydrological processes: a case study in a mountanious landscape of NW Spain | JOSE MANUEL ALVAREZ MARTINEZ; ANA SILIO CALZADA; FRANCISCO JESUS PEÑAS SILVA; MARIO ALVAREZ CABRIA; TAMARA RODRIGUEZ CASTILLO; ALEXIA MARIA GONZALEZ FERRERAS; EDURNE ESTEVEZ CAÑO; MARIA CONSOLACION LEZCANO BASURTO; JOSE BARQUIN ORTIZ; Jetse, Stoorvogel | Limnología 2014: XVII Congress of the Iberian Association of Limnology. Book of Abstracts | AIL: Asociacción Ibérica de Limnología | 1900-01-01T00:00:00 | 2014 | CNF | Comunicación a Congreso | Comunicación a Congreso | Conference object | https://www.limnetica.com/documentos/congresos/congreso-2014-santander.pdf | |||||||||||||||||
| es | CAP2399 | A comparison of approaches to estimate stream metabolism in natural and impaired mountain streams | EDURNE ESTEVEZ CAÑO; TAMARA RODRIGUEZ CASTILLO; MARIO ALVAREZ CABRIA; FRANCISCO JESUS PEÑAS SILVA; ALEXIA MARIA GONZALEZ FERRERAS; ANA SILIO CALZADA; JOSE MANUEL ALVAREZ MARTINEZ; MARIA CONSOLACION LEZCANO BASURTO; JOSE BARQUIN ORTIZ | Limnología 2014: XVII Congress of the Iberian Association of Limnology. Book of Abstracts | AIL: Asociacción Ibérica de Limnología | 1900-01-01T00:00:00 | 2014 | CNF | Comunicación a Congreso | Comunicación a Congreso | Conference object | https://www.limnetica.com/documentos/congresos/congreso-2014-santander.pdf | |||||||||||||||||
| es | CAP2404 | Temporal variability of invertebrate assemblages structure from high mountains streams. How they are affected by changes in the flow regime? | FRANCISCO JESUS PEÑAS SILVA; ANA SILIO CALZADA; JOSE MANUEL ALVAREZ MARTINEZ; TAMARA RODRIGUEZ CASTILLO; EDURNE ESTEVEZ CAÑO; ALEXIA MARIA GONZALEZ FERRERAS; JOSE BARQUIN ORTIZ; MARIA CONSOLACION LEZCANO BASURTO; MARIO ALVAREZ CABRIA | Limnología 2014: XVII Congress of the Iberian Association of Limnology. Book of Abstracts | AIL: Asociacción Ibérica de Limnología | 1900-01-01T00:00:00 | 2014 | CNF | Comunicación a Congreso | Comunicación a Congreso | Conference object | https://www.limnetica.com/documentos/congresos/congreso-2014-santander.pdf | |||||||||||||||||
| es | CAP2405 | Alternative strategies to assess hydrological alteration according to data availability | FRANCISCO JESUS PEÑAS SILVA; ALEXIA MARIA GONZALEZ FERRERAS; EDURNE ESTEVEZ CAÑO; TAMARA RODRIGUEZ CASTILLO; MARIO ALVAREZ CABRIA; ANA SILIO CALZADA; JOSE MANUEL ALVAREZ MARTINEZ; MARIA CONSOLACION LEZCANO BASURTO; JOSE BARQUIN ORTIZ | Limnología 2014: XVII Congress of the Iberian Association of Limnology. Book of Abstracts | AIL: Asociacción Ibérica de Limnología | 1900-01-01T00:00:00 | 2014 | CNF | Comunicación a Congreso | Comunicación a Congreso | Conference object | https://www.limnetica.com/documentos/congresos/congreso-2014-santander.pdf | |||||||||||||||||
| es | CAP2406 | Long-term evolution of ecosystem metabolism in Atlantic rivers | TAMARA RODRIGUEZ CASTILLO; ALEXIA MARIA GONZALEZ FERRERAS; EDURNE ESTEVEZ CAÑO; MARIO ALVAREZ CABRIA; FRANCISCO JESUS PEÑAS SILVA; ANA SILIO CALZADA; JOSE MANUEL ALVAREZ MARTINEZ; MARIA CONSOLACION LEZCANO BASURTO; JOSE BARQUIN ORTIZ | Limnología 2014: XVII Congress of the Iberian Association of Limnology. Book of Abstracts | AIL: Asociacción Ibérica de Limnología | 1900-01-01T00:00:00 | 2014 | CNF | Comunicación a Congreso | Comunicación a Congreso | Conference object | https://www.limnetica.com/documentos/congresos/congreso-2014-santander.pdf | |||||||||||||||||
| es | CAP2410 | Estimating flood-drought pulses in shallow lakes from satellite data: seasonal and interannual variability in the Brazilian pantanal wetland | JOSE MANUEL ALVAREZ MARTINEZ; TAMARA RODRIGUEZ CASTILLO; EDURNE ESTEVEZ CAÑO; MARIA CONSOLACION LEZCANO BASURTO; ANA SILIO CALZADA; JOSE BARQUIN ORTIZ; FRANCISCO JESUS PEÑAS SILVA; MARIO ALVAREZ CABRIA; ALEXIA MARIA GONZALEZ FERRERAS; Huszar, Vera; Mazzeo, Nestor | Limnología 2014: XVII Congress of the Iberian Association of Limnology. Book of Abstracts | AIL: Asociacción Ibérica de Limnología | 1900-01-01T00:00:00 | 2014 | CNF | Comunicación a Congreso | Comunicación a Congreso | Conference object | https://www.limnetica.com/documentos/congresos/congreso-2014-santander.pdf | |||||||||||||||||
| es | CAP2418 | Functional approaches for zoning aquatic Natura 2000 sites | BARBARA ONDIVIELA EIZAGUIRRE; JOSE BARQUIN ORTIZ; MARIA RECIO ESPINOSA; MARIO ALVAREZ CABRIA; JOSE ANTONIO JUANES DE LA PEÑA | Limnología 2014: XVII Congress of the Iberian Association of Limnology. Book of Abstracts | AIL: Asociacción Ibérica de Limnología | 1900-01-01T00:00:00 | 2014 | CNF | Comunicación a Congreso | Comunicación a Congreso | Conference object | https://www.limnetica.com/documentos/congresos/congreso-2014-santander.pdf | |||||||||||||||||
| es | ART10180 | Effects of flow regime alteration on fluvial habitats and riparian quality in a semiarid Mediterranean basin | Belmar O., Bruno D., Martínez-Capel F., Barquín J., Velasco J., | Ecological Indicators Volume 30, July 2013, Pages 52-64 | Elsevier | 2013-07-01T00:00:00 | 2013 | 13 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1470-160X,1872-7034 | 10.1016/j.ecolind.2013.01.042 | https://doi.org/10.1016/j.ecolind.2013.01.042 | The Segura River Basin is one of the most arid and regulated zones in the Mediterranean as well as Europe that includes four hydrologic river types, according to their natural flow regime: main stem rivers, stable streams, seasonal streams and temporary streams. The relationships between flow regime and fluvial and riparian habitats were studied at reference and hydrologically altered sites for each of the four types. Flow regime alteration was assessed using two procedures: (1) an indirect index, derived from variables associated with the main hydrologic pressures in the basin, and (2) reference and altered flow series analyses using the Indicators of Hydrologic Alteration (IHA) and the Indicators of Hydrologic Alteration in Rivers (IAHRIS). Habitats were characterized using the River Habitat Survey (RHS) and its derived Habitat Quality Assessment (HQA) score, whereas riparian condition was assessed using the Riparian Quality Index (RQI) and an inventory of riparian native/exotic species. Flow stability and magnitude were identified as the main hydrologic drivers of the stream habitats in the Segura Basin. Hydrologic alterations were similar to those described in other Mediterranean arid and semiarid areas where dams have reduced flow magnitude and variability and produced the inversion of seasonal patterns. Additionally, the Segura Basin presented two general trends: an increase in flow torrentiality in main stems and an increase in temporality in seasonal and temporary streams. With the indirect alteration index, main stems presented the highest degree of hydrologic alteration, which resulted in larger channel dimensions and less macrophytes and mesohabitats. However, according to the hydrologic analyses, the seasonal streams presented the greatest alteration, which was supported by the numerous changes in habitat features. These changes were associated with a larger proportion of uniform banktop vegetation as well as reduced riparian native plant richness and mesohabitat density. Both stream types presented consequent reductions in habitat and riparian quality as the degree of alteration increased. However, stable streams, those least impacted in the basin, and temporary streams, which are subject to great hydrologic stress in reference conditions, showed fewer changes in physical habitat due to hydrologic alteration. This study clarifies the relationships between hydrologic regime and physical habitat in Mediterranean basins. The hydrologic and habitat indicators that respond to human pressures and the thresholds that imply relevant changes in habitat and riparian quality presented here will play a fundamental role in the use of holistic frameworks when developing environmental flows on a regional scale. | |||||||||||
| es | ART10182 | Productivity-diversity relationships for stream invertebrates differ geographically | Tonkin J., Death R., Barquín J., | Aquatic Ecology, 2013, 47(1), 109 -121 | Springer | 2013-03-01T00:00:00 | 2013 | 13 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1386-2588,1573-5125 | 10.1007/s10452-013-9429-0 | https://doi.org/10.1007/s10452-013-9429-0 | More productive environments typically have more species, although the specific form of this relationship is unclear and can vary with spatial scale. This relationship has received little direct attention in lotic systems, and thus the nature of the relationship is unclear, as is any effect of spatial scale. We examined the link between stream primary productivity and macroinvertebrate diversity in Spain and New Zealand and hypothesized that macroinvertebrate diversity would increase log-linearly with increasing productivity in both regions. We sampled 24 streams in Cantabria, Spain, and 24 in the central North Island, New Zealand. Algal primary productivity was approximately three times higher in Spanish streams, but taxonomic richness of invertebrates did not differ between the regions. Richness and Shannon diversity only responded to productivity in the New Zealand streams, exhibiting the predicted log-linear increase. In the Spanish streams, only the total number of individuals increased with productivity. However, when plotted on the same axes, richness in the Spanish streams simply occurred on the linear portion of the graph to the right of the New Zealand streams. We speculate that productivity in the Spanish streams never became low enough to constrain diversity, but did in the New Zealand streams. Combining results from the two regions, there is no evidence of a decline in diversity with higher productivity | |||||||||||
| es | ART10178 | Geographic location alters the diversity-disturbance response | Death R.G., Barquín J., | Freshwater Science, 2012, 31(2), 636-646 | University of Chicago Press | 2012-06-01T00:00:00 | 2012 | 11 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 2161-9549,2161-9565 | 10.1899/11-059.1 | https://www.journals.uchicago.edu/doi/abs/10.1899/11-059.1 | Despite extensive research on the link between disturbance and diversity in ecology and several eloquent models to describe the relationship, a universally applicable model remains elusive. However, most investigations of the diversity-disturbance relationship have been limited in spatial coverage. Recent theoretical and conceptual advances in macroecology suggest that such spatially constrained studies may limit interpretation. To explore the effect of geographic location on the disturbance-diversity relationship, we examined invertebrate assemblages in streams of northern Spain and New Zealand (NZ) and in multiple regions within NZ. Habitat characteristics were similar across all sites and locations, except that undisturbed sites (springbrooks) differed from disturbed sites (rhithral streams) by having constant thermal and hydrologic regimes. The resource base and the density of invertebrates were greater in the more-stable habitats in all regions. However, patterns of invertebrate species richness differed markedly between locations in the Northern and Southern Hemispheres. Springbrooks in all regions within NZ had greater richness than rhithral streams. In contrast, springbrooks in Spain had considerably lower species richness than rhithral streams. Thus, low hydrological disturbance in Spain yielded low diversity, whereas in NZ it yielded high diversity. Amphipoda dominated the springbrook faunas in Spain, whereas insects dominated in NZ. Thus, differences in the diversity patterns between Spain and NZ are potentially related to phylogenetic differences or environmental constraints on life-history cues. A universal model to link disturbance and diversity is more likely to be successful if it incorporates life-history traits rather than morphological traits. | |||||||||||
| es | ART10179 | Quantifying the performance of automated GIS-based geomorphological approaches for riparian zone delineation using digital elevation models | Fernández D., Barquín J., Álvarez-Cabria M., Peñas F.J., | Hydrology and Earth System Sciences, 2012, 16(10), 3851-3862 | European Geosciences Union (EGU) | 2012-10-01T00:00:00 | 2012 | 12 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1027-5606,1607-7938 | 10.5194/hess-16-3851-2012 | 10902/22820 | CTM-2009-07447 | Riparian zone delineation is a central issue for managing rivers and adjacent areas; however, criteria used to delineate them are still under debate. The area inundated by a 50-yr flood has been indicated as an optimal hydrological descriptor for riparian areas. This detailed hydrological information is usually only available for populated areas at risk of flooding. In this work we created several floodplain surfaces by means of two different GIS-based geomorphological approaches using digital elevation models (DEMs), in an attempt to find hydrologically meaningful potential riparian zones for river networks at the river basin scale. Objective quantification of the performance of the two geomorphologic models is provided by analysing coinciding and exceeding areas with respect to the 50-yr flood surface in different river geomorphological types | ||||||||||
| es | CAP6339 | Assessing the Conservation Status of Alder-Ash Alluvial Forest and Atlantic Salmon in the Natura 2000 River Network of Cantabria, Northern Spain | JOSE BARQUIN ORTIZ; BARBARA ONDIVIELA EIZAGUIRRE; MARIA RECIO ESPINOSA; MARIO ALVAREZ CABRIA; FRANCISCO JESUS PEÑAS SILVA; DIEGO FERNANDEZ GONZALEZ; LAURA OTI ECHEVARRIA; ANDRES GARCIA GOMEZ; CESAR ALVAREZ DIAZ; JOSE ANTONIO JUANES DE LA PEÑA | River Conservation and Management | Wilwy-Blackwell | 1900-01-01T00:00:00 | 2012 | -18 | 193 | 210 | LCT | Capítulo de libro | Capítulo de libro | Book part | 978-0-470-68208-1 | ||||||||||||||
| es | ART11080 | A review of river habitat characterisation methods: Indices vs.characterisation protocols | Fernández D., Barquín J., Raven P.J., | Limnetica 2011, 30(2), 217-234 | Asociación Ibérica de Limnología | 1900-01-01T00:00:00 | 2011 | 18 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0213-8409,1989-1806 | 10.23818/limn.30.17 | MARCE (Ref: CTM-2009-07447) | A wide variety of methodologies have been proposed for characterising river habitats in order to meet different environmental objectives. However, mid- to long-term monitoring of the physical characteristics of river habitats lacks a standardised methodology. This contrasts with well-established methods for monitoring other river ecosystem components. Some attempts have been made to standardise the methods for characterising river habitats including the European Guidance Standard for Assessing the Hydromorphological Characteristics of Rivers (CEN, 2002) and the Physical and Chemical Assessment Module within the Australian River Assessment System (AusRivAS). One of the first steps toward advancing the development and use of methods for characterising river habitats in mid- to long-term monitoring programs is to review current practices so that deficiencies can be identified and addressed. In the present work, we review more than 50 methods that have been used lo characterise river habitats worldwide. This review uses the European standard as a reference benchmark for comparison with existing methods of river habitat characterisation. Methods of characterising river habitats differ mainly with respect to three features: (1) the objectives for which they were designed, (2) the time required for their application and (3) whether they measure characteristics or evaluate them. Channel and riparian zone characteristics are more extensively covered than floodplain characteristics. Moreover, of all the described river habitat characteristics, bank stability, channel substrate, artificial structures, riparian vegetation structure, channel dimensions, f10w types or f10w status, adjacent land uses and bars are the most commonly recorded. We conclude that assessment methods of river habitat characteristics that gather quantitative information at a range of spatial scales could be the most effective, as they provide relatively extensive data sets that can be used to analyse information for several purposes. Finally, some types of rivers, such as intermittent rivers, require further work in order to identify their physical habitat characteristics and the proper monitoring methodology. | |||||||||||
| es | ART11102 | Effects of landscape metrics and land-use variables on macroinvertebrate communities and habitat characteristics | Cortes R., Varandas S., Teixeira A., Hughes S., Magalhães M., Barquín J., Álvarez-Cabria M., Fernández D., | Limnetica 2011, 30 (2), 347-362 | Asociación Ibérica de Limnología | 1900-01-01T00:00:00 | 2011 | 16 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0213-8409,1989-1806 | 10.23818/limn.30.25 | 10902/27211 | The growing number of studies establishing links between stream biota, environmental factors and river classification has contributed to a better understanding of fluvial ecosystem function. Environmental factors influencing river systems are distributed over hierarchically organised spatial scales. We used a nested hierarchical sampling design across four catchments to assess how benthic macroinvertebrate community composition and lower spatial scale habitat descriptors were shaped by landscape and land-use patterns. We found that benthic macroinvertebrate community structure and composition varied significantly from catchment to habitat level. We assessed and identified fractal metrics of landscape descriptors capable of explaining compositional and functional change in the benthic faunal indicators and compared them with the traditional variables describing land use and reach level habitat descriptors within a 1 km radius of each sampling site. We found that fractal landscape metrics were the best predictor variables for benthic macroinvertebrate community composition, function, instream habitat and river corridor characteristics. | |||||||||||
| es | ART11103 | Influence of data sources and processing methods on theoretical river network quality | Peñas F.J., Fernández F., Calvo M., Barquín J., Pedraz L., | Limnetica 2011, 30( 2), 197-216 | Asociación Ibérica de Limnología | 1900-01-01T00:00:00 | 2011 | 20 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0213-8409,1989-1806 | 10.23818/limn.30.16 | 10902/27174 | CTM2009-07447 | Stream ecosystem research and water resource management need to be considered over broad spatial scales. Moreover, the investigation of the spatial configuration and habitat characteristics of streams requires an accurate and precise spatial framework to reflect a catchment?s physical reality that can successfully explain observed patterns at smaller scales. In this sense, geographic information systems represent an essential tool to satisfy the needs of researchers and managers. Specifically, theoretical river networks (TRNs) extracted from digital elevation models (DEMs) have become much more common in recent years, as they can provide a suitable spatial network and hierarchical organisation to sort out river ecosystem information from reach to catchment levels. Nevertheless, the quality of the extracted TRN depends greatly on the spatial resolution of the DEM and the methodology used in the network extraction processes. In this study, we compare the quality of 9 TRNs extracted from DEMs with different spatial resolutions ranging from regional (5 m) to national (25 m) and global scales (90 m) using the ArcHydro, Hec-GeoHMS and Netstream software packages. To achieve our goal, we compared (i) the DEM-derived slope; (ii) the spatial accuracy of the TRNs in relation to a control river network; (iii) the structure of the TRNs through analysis of the number of river segments, average river segment length and total river length by stream order, drainage density and the mean upstream slope throughout the TRN; and (iv) the ability of variables derived from TRNs to discriminate among stream types classified according to flow type and substrate composition. We demonstrated that not only DEM spatial resolution but also the DEM data source and raster creation process exert an important influence on terrain characteristics derived from DEMs and TRN properties. Moreover, TRNs extracted with NetStream generally showed better performance than those extracted with ArchHydro and HecGeoHMS. Nevertheless, river network extraction quality, DEM spatial resolution and extraction algorithms exhibit complex relationships due to the large number of interacting factors. | ||||||||||
| es | ART11104 | Integrating monitoring, expert knowledge and habitat management within conservation organisations for the delivery of the water framework directive: A proposed approach | Naura M., Sear D., Álvarez M., Peñas F., Fernández D., Barquín J., | Limnetica 2011 , 30( 2), 427-446 | Asociación Ibérica de Limnología | 1900-01-01T00:00:00 | 2011 | 20 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0213-8409,1989-1806 | 10.23818/limn.30.30 | 10902/4221 | There is a growing necessity to better understand the nature of the relationships between environmental attributes and freshwater species/communities to enable meaningful action to take place against the impacts of environmental change in river ecosystems. Such understanding would need to be based on the investigations of causal relationships rather than the study of statistical correlations or the use of expert opinion as is generally the case. Another issue is in identifying the scale(s) at which process and features should be recorded and assessed to enable the design of relevant monitoring programs. In this paper, we present a short review of existing knowledge on species/habitat relationships and discuss the importance of adequate theoretical frameworks for identifying environmental features of importance to wildlife and determining the scale/s at which they should be assessed. We further propose an approach for eliciting those relationships within the context of monitoring and management practice in conservation organisations. We show how conceptual models of habitat-species relationships can be built using existing knowledge and expert opinion and tested on data collected as part of existing monitoring programs. We suggest such framework, if applied, could not only help identify causal relationships between species, features and processes acting at various scales, but also initiate a knowledge acquisition process within organisations responsible for the delivery of the Water Framework Directive. | |||||||||||
| es | ART11105 | Preface: Assessment of physical habitat characteristics in rivers,implications for river ecology and management | Barquín J., Martínez-Capel F., | Limnetica 2011, 30(2), 159-168 | Asociación Ibérica de Limnología | 1900-01-01T00:00:00 | 2011 | 10 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0213-8409,1989-1806 | 10.23818/limn.30.13 | 10902/4217 | CTM-2009-07447 | Physical habitat characteristics are an extremely important factors determining the structure and composition of fluvial biological communities and fluvial ecosystem functioning. Existing methods for characterising the physical realm of river habitats are increasingly important, not only for monitoring river ecosystem health and the success of river restoration projects but also for increasing the understanding of river ecosystem functioning and improving the efficiency of management actions. However, there is no scientific consensus on which methods to use for long-term monitoring and which river features to monitor because many fundamental questions relating hydrological, geomorphological and biological characteristics remain unanswered and because river habitats are monitored to cover a wide variety of objectives. Several initiatives worldwide have demonstrated the importance of analysing and discussing the application of different methods to assess river habitat characteristics for different objectives. It would be interesting to achieve a common approach for river habitat characterization for different objectives, especially for mid- to long- term monitoring programs and different river management issues (e.g., monitoring river restoration projects). More elusive but no less important is the contribution of these methods to understanding the interactions between river habitat architecture and river functioning. In this regard, the Physical Habitat Assessment Methods in Rivers (PHAM) seminar was organised in Santander, northern Spain, in November 2009 to review current practices on river habitat assessment. The contributions presented in that seminar and some later contributions form the basis of this special volume. These papers identify the main factors creating and maintaining river habitats, review physical habitat assessment methods and propose improvements and adaptations, apply different methods in distinctive geographical areas and characterise river habitats for estimating habitat availability of different fish species. | ||||||||||
| es | ART11106 | Riparian quality and habitat heterogeneity assessment in Cantabrian rivers | Barquín J., Fernández D., Álvarez-Cabria M., Peñas F., | Limnetica 2011, 30( 2), 329-346 | Asociación Ibérica de Limnología | 1900-01-01T00:00:00 | 2011 | 18 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0213-8409,1989-1806 | 10.23818/limn.30.24 | 10902/4218 | CTM-2009- 07447 | In this study, we attempted to assess riparian quality and river habitat heterogeneity as part of the conservation status assessment of the Habitats Directive (EC, 1992) in the rivers included in the Nature 2000 network of Cantabria, Northern Spain. We chose the Qualitat del Bosc de Ribera (QBR) and the Riparian Quality Index (RQI) to assess riparian quality and the Índice de Habitabilidad Fluvial (IHF) and Habitat Quality Assessment (HQA) to assess the river habitat heterogeneity. The present study aims to compare the performance of the QBR and RQI for assessing riparian quality (RQ) and of the IHF and HQA for assessing river habitat heterogeneity (RHH). With a higher score in each index, the site has a higher likelihood of belonging to a reference condition and also of reaching a higher biological integrity. Thus, we used logistic binary regressions of RQ and RHH to determine the relationships between the attributes evaluated by each of the four indices and reference/non-reference conditions. We also looked into the relationships between RQ and RHH as well as between these indices and the local macroinvertebrate communities. We surveyed riparian vegetation and river habitat characteristics in a total of 285 river reaches, each 500 m in length, along the fluvial network of Cantabria. These data were combined with previous macroinvertebrate community records from a total of 52 river reaches, and the Index of Average Score per Taxon (IASPT) metric was calculated for comparison. Reference condition sites were selected in 10 river types for the purpose of the present study on the basis of (1) unaltered discharge, (2) non-intensive land uses and (3) no or minimal morphological changes. There were 96 river reaches that matched the reference conditions. QBR and RQI were sensitive to both reference and nonreference conditions in the official river types and were larger in reference conditions than in non-reference conditions for most of the river types. However, IHF and HQA could only differentiate some of the river types and could not distinguish between reference and non-reference conditions. Moreover, IHF and HQA did not have a similar response to human modifications across river types, as reference reaches presented larger or lower values than non-reference conditions depending on the river type. Finally, RQ was positively correlated to RHH, and IASPT increased with both. We concluded that RQI and HQA performed slightly better than QBR and IHF indices to distinguish between reference and non-reference sites in the rivers of Cantabria and that river habitat heterogeneity should not be used to assess river habitat quality. | ||||||||||
| es | ART11107 | Downstream changes in spring-fed stream invertebrate communities: The effect of increased temperature range? | Barquín J., Death R., | Journal of Limnology 2011,70(Suppl. 1), 134-146 | Verbania Pallanza: Istituto per lo Studio degli Ecosistemi | 2011-09-01T00:00:00 | 2011 | 13 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1129-5767,1723-8633 | 10.3274/JL11-70-S1-10 | https://www.jlimnol.it/index.php/jlimnol/article/view/jlimnol.2011.s1.134 | 10902/27209 | Reduced thermal amplitude has been highlighted as a limiting factor for aquatic invertebrate diversity in springs. Moving downstream water temperature range increases and invertebrate richness is expected to change accordingly. In the present study temperature patterns were investigated in seven spring-fed streams, between April 2001 and November 2002, and compared to five run-off-fed streams to assess the degree of crenic temperature constancy. Temperature and physico-chemical characteristics of the water, and food resource levels were measured, and the invertebrate fauna collected at 4 distances (0, 100, 500 m and 1 km) from seven springs in the North and South Islands of New Zealand. Temperature variability was greater for run-off-fed streams than for springs, and increased in the spring-fed streams with distance from the source. Periphyton and physico-chemical characteristics of the water did not change markedly over the 1 km studied, with the exception of water velocity and organic matter biomass, which increased and decreased, respectively. The rate of increase in temperature amplitude differed greatly for the studied springs, probably being affected by flow, altitude, and the number and type of tributaries (i.e., spring- or run-off-fed) joining the spring-fed stream channel. Longitudinal changes in the number and evenness of invertebrate taxa were positively correlated to thermal amplitude (rs = 0.8). Moving downstream, invertebrate communities progressively incorporated taxa with higher mobility and taxa more common in nearby run-off-fed streams. Chironomids and non-insect taxa were denser at the sources. Chironomid larvae also numerically dominated communities 100 and 500 m downstream from the sources, together with Pycnocentria spp. and Zelolessica spp., while taxa such as Hydora sp. and Hydraenidae beetles, the mayflies Deleatidium spp. and Coloburiscus humeralis, and the Trichoptera Pycnocentrodes spp., all had greater abundances 1 km from the sources. In conclusion, water temperature range was highly correlated with number of taxa, although other factors, such as substratum composition, stability and invertebrate drift, may also play an important role in the determination of longitudinal changes in invertebrate community composition and structure along spring-fed streams. | ||||||||||
| es | ART11131 | Macroinvertebrate community dynamics in a temperate European Atlantic river. Do they conform to general ecological theory? | Álvarez-Cabria M., Barquín J., Juanes J.A., | Hydrobiologia 2011, 658, 277?291 | Springer | 2011-01-01T00:00:00 | 2011 | 15 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1573-5117,0018-8158 | 10.1007/s10750-010-0498-y | https://doi.org/10.1007/s10750-010-0498-y | CGL2006-10282 | Spatial and temporal dynamics of macroinvertebrate communities have usually been linked to several environmental and anthropic factors. The aim of this study is to elucidate how important are these factors in structuring macroinvertebrate communities from temperate regions. Regarding the macroinvertebrate number of taxa, the Habitat Template Model, the Dynamic Equilibrium Hypothesis and the Intermediate Disturbance Hypothesis will be tested in order to know how important the diversity of instream elements and the hydrological disturbance frequency are in defining the macroinvertebrate taxonomic richness. Thus, the structure and composition of macroinvertebrate communities were analysed in nine sites of the Pas River basin, a temperate Atlantic basin in northern Spain, during winter, spring, summer and autumn 2005, together with water physicochemical and environmental characteristics. Macroinvertebrate abundance increased downstream and during summer, probably favoured by lower hydraulic stress and water organic enrichment. As predicts the Habitat Template Model, the macroinvertebrate number of taxa was related to habitat heterogeneity. However, no clear relationship amongst macroinvertebrate richness and water quality was found. The macroinvertebrate taxonomic richness did not correspond exactly with the Dynamic Equilibrium Hypothesis and the Intermediate Disturbance Hypothesis because it was relatively high in the absence of hydrological disturbances (summer). Thus, disturbance events may play a secondary role in determining the seasonal dynamic of the number of taxa. However, hydrological disturbances can be considered the most important factors explaining the seasonal pattern of macroinvertebrate abundance. On the other hand, spatial patterns of macroinvertebrate community structure and composition were mainly determined by resource availability, hydraulic conditions, habitat heterogeneity and human alterations, whilst hydrological predictability and resource availability might play a major role in determining seasonal dynamics. | ||||||||||
| es | ART11133 | Microdistribution patterns of macroinvertebrate communities upstream and downstream of organic effluents | Álvarez-Cabria M., Barquín J., Juanes J.A., | Water Research 2011, 45 (3), 1501-1511 | Elsevier Limited | 2011-01-01T00:00:00 | 2011 | 11 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 0043-1354,1879-2448 | 10.1016/j.watres.2010.11.028 | https://doi.org/10.1016/j.watres.2010.11.028 | CGL2006-10282 | The present study analyses the distribution patterns of macroinvertebrate communities in four microhabitats (riffles, glides, leaf litter and bank roots) upstream and downstream of two waste water treatment plant (WWTP) effluents in northern Spain rivers. Macroinvertebrate communities were analysed in November 2006 by taking 5 samples from each of the microhabitats under unaffected (upstream WWTP) and affected (downstream WWTP) conditions, respectively. Water velocity, depth, substrate coarseness and hydraulic stress by means of the Froude number were also estimated at all sampling locations. Under unaffected conditions, the abundance and presence/absence of certain macroinvertebrate taxa were mainly determined by hydraulic characteristics (water velocity and Froude number) and feeding resource availability. However, neither macroinvertebrate richness nor abundance were neither significantly correlated with hydraulic stress nor substrate coarseness, although the number of macroinvertebrate taxa increased in microhabitats with high structural complexity. Macroinvertebrate abundance increased downstream of both WWTPs, while macroinvertebrate richness was not adversely affected by the organic enrichment of water. The structure and composition of macroinvertebrate communities occurring in riffles was similar under unaffected and affected conditions, while communities from leaf litter and submerged bank roots showed important changes above and below the WWTPs, indicating that they are probably the most appropriate communities for water quality assessment. | ||||||||||
| es | ART11079 | Spatial and seasonal variability of macroinvertebrate metrics: Do macroinvertebrate communities track river health? | Álvarez-Cabria M., Barquín J., Antonio Juanes J., | Ecological Indicators 2010, 10(2), 370-379 | Elsevier | 2010-03-01T00:00:00 | 2010 | 10 | 0 | 0 | ART | Artículo de Revista | Artículo de Revista | Article | 1470-160X,1872-7034 | 10.1016/j.ecolind.2009.06.018 | https://doi.org/10.1016/j.ecolind.2009.06.018 | The present study analyses the relationships of a set of 19 macroinvertebrate community metrics in relation to hydromorphological and water quality stress gradients in the Pas river basin, Northern Spain. Moreover, this study also aims to identify the most sensible season for biomonitoring this temperate Atlantic basin by means of macroinvertebrate communities. Thus, macroinvertebrate communities were analysed, along with the physicochemical characteristics of water in January, April, August and November 2005, in 9 sites. Hydromorphological conditions were evaluated using the Hydrogeomorphologic Index and by quantifying the percentage of reinforced banks, the number of low-head dams and their distance to each study site. Hydromorphological and water quality stress gradients were determined by means of two independent Principal Component Analysis. Thus, we obtained two water quality stress gradients, indicating organic pollution and watershed runoff, respectively, and a hydromorphological stress gradient. Macroinvertebrate metrics correlated better with the hydromorphological and the organic pollution stress gradients during the stable flow season, probably because of the homogenisation of water and hydraulic characteristics in the high flow season. On the other hand, relationships between macroinvertebrate metrics and watershed runoff stress gradient seem to be more dominated by hydraulic conditions than by water quality characteristics. LIFE index and the ICMi were the macroinvertebrate metrics that best correlated with the hydromorphological stress gradient, while EPTt, EPt, IBMWP, ASPT, LIFE, AsMet, Rhet, NoIns% and MACh% were well correlated with the organic pollution stress gradient in the low flow period. EPTt, EPt, ASPT, Rhet, and AsMet did not show significant seasonal differences and, thus, they are recommended as appropriate metrics to integrate biomonitoring results from different seasons in temperate European Atlantic rivers. Finally, autumn seems to be the best season to sample macroinvertebrate communities in this temperate Atlantic basin for biomonitoring purposes, and might be also the case for other similar European rivers. |