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Fish diversity in European lakes: geographical factors dominate over anthropogenic pressures

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dc.contributor Universitat de Vic. Escola Politècnica Superior
dc.contributor Universitat de Vic. Grup de Recerca de Medi Ambient
dc.contributor.author Brucet Balmaña, Sandra
dc.contributor.author Pédron, Sthépanie
dc.contributor.author Mehner, Thomas
dc.contributor.author Lauridsen, Torben L.
dc.contributor.author Argillier, Christine
dc.contributor.author Winfield, Ian J.
dc.contributor.author Volta, Pietro
dc.contributor.author Emmrich, Matthias
dc.contributor.author Hesthagen, Trygve
dc.contributor.author Holmgren, Kerstin
dc.contributor.author Benejam Vidal, Lluís
dc.contributor.author Kelly, Fiona
dc.contributor.author Krause, Teet
dc.contributor.author Palm, Anu
dc.contributor.author Rask, Martti
dc.contributor.author Jeppesen, Erik
dc.date.accessioned 2013-06-18T18:19:34Z
dc.date.available 2013-06-18T18:19:34Z
dc.date.created 2013
dc.date.issued 2013
dc.identifier.citation Brucet, S., Pedron, S., Mehner, T., Lauridsen, T. L., Argillier, C., Winfield, I. J., . . . Jeppesen, E. (2013). Fish diversity in European lakes: geographical factors dominate over anthropogenic pressures. Freshwater Biology, 58(9), 1779-1793. doi:10.1111/fwb.12167 ca_ES
dc.identifier.issn 1365-2427
dc.identifier.issn 0046-5070
dc.identifier.uri http://hdl.handle.net/10854/2284
dc.description.abstract 1. We aimed to distinguish the relative contributions of natural and anthropogenic local factors on patterns of fish diversity in European lakes at different geographical scales. 2. We compiled data from standardised fish monitoring using multimesh benthic gill nets, information on lake morphometry and on geographical, climatic and anthropogenic pressure variables from 1632 lakes in 11 European countries. By means of regression trees, we determined those natural and anthropogenic factors and their thresholds that best predicted local fish diversity, density and mean size. Generalised linear models were used to assess the influence of anthropogenic factors at smaller geographical and morphometric scales. 3. Local fish species richness and diversity were related mainly to morphometric and (bio)geographical/ climatic variables. Larger and deeper lakes in warm areas tended to be the most species rich and diverse. Fish density was related mainly to anthropogenically driven productivity but also was sensitive to geographical/climatic factors. Thus, warmer and shallower lower-altitude European lakes, which are usually more eutrophic, had higher fish densities than cold and deeper higher-altitude lakes. Fish size increased with altitude and declined with increasing seasonality and temperature. 4. After controlling for the natural factors, productivity had a positive effect on fish species richness and diversity, whereas it negatively influenced fish size. 5. Our results suggest that macroecological patterns of lake fish diversity across Europe are best predicted by natural factors. The contribution of anthropogenic factors to fish diversity was evident only via the effect of eutrophication at smaller geographical scales, whereas no effect could be found from hydromorphological pressures. From an applied perspective, these results suggest that bioassessment and biodiversity evaluation might be most effectively conducted and interpreted locally, where anthropogenic effects on biodiversity become more apparent. At a macroecological scale, the strong effect of environmental temperature on most components of fish diversity suggests future changes in fish diversity as a consequence of climate change. ca_ES
dc.format application/pdf
dc.format.extent 15 p. ca_ES
dc.language.iso eng ca_ES
dc.publisher Wiley ca_ES
dc.rights (c) Blackwell Wiley
dc.rights [The definitive version is available at www3.interscience.wiley.com]
dc.rights Tots els drets reservats ca_ES
dc.subject.other Biologia ca_ES
dc.title Fish diversity in European lakes: geographical factors dominate over anthropogenic pressures ca_ES
dc.type info:eu-repo/semantics/article ca_ES
dc.identifier.doi https://doi.org/10.1111/fwb.12167
dc.relation.publisherversion http://onlinelibrary.wiley.com/doi/10.1111/fwb.12167/abstract
dc.rights.accesRights info:eu-repo/semantics/closedAccess ca_ES
dc.type.version info:eu-repo/publishedVersion ca_ES
dc.indexacio Indexat a SCOPUS
dc.indexacio Indexat a WOS/JCR ca_ES

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