Model-based decomposition of environmental, spatial and species-interaction effects on the community structure of common fish species in 772 European lakes
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Kuupäev
2021
Kättesaadav alates
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Wiley
Abstrakt
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.
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu, Grant/Award Number: 118C250; Spanish Ministry of Science, Innovation and Universities, Grant/ Award Number: RTI2018-095363-B-I00; European Commission; Environmental Investment Centre KIK, Grant/Award Number: 8603/2014; Deutsche Forschungsgemeinschaft, Grant/Award Number: Me 1686/7-1
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu, Grant/Award Number: 118C250; Spanish Ministry of Science, Innovation and Universities, Grant/ Award Number: RTI2018-095363-B-I00; European Commission; Environmental Investment Centre KIK, Grant/Award Number: 8603/2014; Deutsche Forschungsgemeinschaft, Grant/Award Number: Me 1686/7-1
Kirjeldus
Märksõnad
community assembly, dispersal, environmental filters, latent variables, model-based analysis, predator–prey interactions, articles