Environmental filtering determines metacommunity structure in wetland microcrustaceans

Oecologia
Stéphanie GascónDani Boix

Abstract

Metacommunity approaches are becoming popular when analyzing factors driving species distribution at the regional scale. However, until the popularization of the variation partitioning technique it was difficult to assess the main drivers of the observed patterns (spatial or environmental). Here we propose a new framework linking the emergence of different metacommunity structures (e.g., nested, Gleasonian, Clementsian) to spatial and environmental filters. This is a novel approach that provides a more profound analysis of how both drivers could lead to similar metacommunity structures. We tested this framework on 110 sites covering a strong environmental gradient (i.e., microcrustacean assemblages organized along a salinity gradient, from freshwater to brackish water wetlands). First we identified the metacommunity structure that better fitted these microcrustacean assemblages. Then, we used hierarchical variation partitioning to quantify the relative influences of environmental filters and the distance among wetlands on the identified structure. Our results showed that under strong environmental filtering metacommunity structures were non-random. We also noted that even passive dispersers, that are supposed to be poorly spati...Continue Reading

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Citations

Feb 12, 2017·Conservation Biology : the Journal of the Society for Conservation Biology·Albert RuhíJohn L Sabo
Feb 6, 2020·Scientific Reports·Andreia Teixeira AlvesFrancisco Barros
Mar 2, 2021·The Science of the Total Environment·Carla Albuquerque de SouzaLudgero Cardoso Galli Vieira
Mar 16, 2021·The Science of the Total Environment·Maria Julia Mileo GanassinLuiz Carlos Gomes

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