| Authors | Mehner, T. and Argillier, C. and Hesthagen, T. and Holmgren, K. and Jeppesen, E. and Kelly, F. and Krause, T. and Olin, M. and Volta, P. and Winfield, I.J. and Brucet, S. |
| Text | 454871 2021 10.1111/geb.13314 Scopus 2 s2.0 85105390204 community assembly dispersal; environmental filters; latent variables; model based analysis; predator prey interactions Model based decomposition of environmental, spatial and species interaction effects on the community structure of common fish species in 772 European lakes Mehner, T. and Argillier, C. and Hesthagen, T. and Holmgren, K. and Jeppesen, E. and Kelly, F. and Krause, T. and Olin, M. and Volta, P. and Winfield, I.J. and Brucet, S. Leibniz Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany INRAE, UMR RECOVER, Aix en Provence, France Norwegian Institute for Nature Research NINA , Trondheim, Norway Department of Aquatic Resources, Institute of Freshwater Research, Swedish University of Agricultural Sciences, Drottningholm, Sweden Department of Bioscience, Aarhus University, Silkeborg, Denmark Sino Danish Centre for Education and Research, Beijing, China Limnology Laboratory, Department of Biological Sciences and Centre for Ecosystem Research and Implementation, Middle East Technical University, Ankara, Turkey Institute of Marine Sciences, Middle East Technical University, Mersin, Turkey Inland Fisheries Ireland, Citywest Business Campus, Dublin, Ireland Institute of Agriculture and Environment, Estonian University of Life Sciences, Tartu, Estonia Natural Resources Institute Finland, Helsinki, Finland IRSA CNR, Water Research Institute of the National Research Council, Verbania, Italy Lake Ecosystems Group, UK Centre for Ecology Hydrology, Lancaster Environment Centre, Bailrigg, United Kingdom Aquatic Ecology Group, University of Vic Central University of Catalonia, Vic, Spain ICREA, Catalan Institution for Research and Advanced Studies, Barcelona, Spain Aim We tested whether there is a strong effect of species interactions on assembly of local lake fish communities, in addition to environmental filters and dispersal. Location Seven hundred and seventy two European lakes and reservoirs. Time period 1993 2012. Major taxa studied Nineteen species of freshwater fishes. Methods We applied a latent variable approach using Bayesian Markov chain Monte Carlo algorithms R package BORAL . We compared the contributions of six environmental predictors and the spatial organization of 772 European lakes in 209 river basins on the presence/absence of the 19 most frequent fish species and on the biomass and mean mass of the six dominant species. We inspected the residual correlation matrix for positive and negative correlations between species. Results Environmental 50% and spatial 10% predictors contributed to the presence/absence assembly of lake fish communities, whereas lake size and productivity contributed strongly to the biomass and mean mass structures. We found highly significant negative correlations between predator and prey fish species pairs in the presence/absence, biomass and mean mass datasets. There were more significantly positive than negative correlations between species pairs in all three datasets. In addition, unmeasured abiotic predictors might explain some of the correlations between species. Main conclusions Strong effects of species interactions on assembly of lake fish communities are very likely. We admit that our approach is of a correlational nature and does not generate mechanistic evidence that interactions strongly shape fish community structures; however, the results fit with present knowledge about the interactions between the most frequent fish species in European lakes and they support the assumption that, in particular, the mean masses of fish species in lakes are modified by species interactions. 2021 The Authors. Global Ecology and Biogeography published by John Wiley Sons Ltd Published version https //www.scopus.com/inward/record.uri eid=2 s2.0 85105390204 doi=10.1111%2fgeb.13314 partnerID=40 md5=d07e4df0b63e683e9daf215ace4a2046 cited By 0 Articolo in rivista Blackwell Science. 1466 8238 Global ecology and biogeography Online Global ecology and biogeography Online Glob. ecol. biogeogr. Online pietro.volta VOLTA PIETRO |
