Testate Amoeba (Arcellinida, Euglyphida) Ecology along a Poor‐Rich Gradient in Fens of Western Poland

作者：Łukasz Lamentowicz, Maciej Gąbka, Anna Rusińska, Tadeusz Sobczyński, Paweł M. Owsianny, Mariusz Lamentowicz · 发表于：International Review of Hydrobiology · 年份：2011 · DOI：10.1002/iroh.201111357 · 被引用次数：46 · 研究领域：Protist diversity and phylogeny、Geology and Paleoclimatology Research、Peatlands and Wetlands Ecology

Abstract We investigated the relationships between testate amoebae (Arcellinida, Euglyphida), vegetation and water chemistry along environmental gradients in minerotrophic peatlands (fens) in western Poland. We hypothesized that: a) hydrochemistry significantly influences structure of testate amoeba communities, and b) testate amoeba communities are more closely correlated with the hydrochemical variables (environment) than with the vegetation data. Testate amoeba communities and vegetation from 71 sample plots were investigated together with the hydro‐chemistry and hydrology based on 16 environmental variables and vegetation composition. Testate amoeba communities revealed a distinctive poor‐rich gradient in analysed fens. Mineral‐rich habitats, which were dominated by brown mosses, were preferred by a higher number of taxa than acidic habitats, which were dominated by Sphagnum. We recorded a total of 107 testate amoebae taxa. The average species richness of testate amoebae for brown mosses was higher (20) than for Sphagnum (13). We found that testate amoebae communities were similarly correlated with vascular plants, mosses and environmental parameters. Results of direct ordination demonstrate that hydrology, pH, Mg2+ and sodium remain the most important environmental control for the entire data set. CCA showed that in case of brown mosses hydrology, sodium and oxygen affect testate amoeba communities significantly whereas in Sphagnum only sodium emerge as most significant ...