Environmental selection and spatiotemporal structure of a major group of soil protists (Rhizaria: Cercozoa) in a temperate grassland
Environmental selection and spatiotemporal structure of a major group of soil protists (Rhizaria: Cercozoa) in a temperate grassland
Abstract Soil protists are increasingly appreciated as essential components of soil foodwebs; however, there is a dearth of information on the factors structuring their communities. Here we investigate the importance of different biotic and abiotic factors as key drivers of spatial and seasonal distribution of protistan communities. We conducted an intensive survey of a 10m2 grassland plot in Germany, focusing on a major group of protists, the Cercozoa. From 177 soil samples, collected from April to November, we obtained 694 Operational Taxonomy Units representing >6 million Illumina reads. All major cercozoan groups were present, dominated by the small flagellates of the Glissomonadida. We found evidence of environmental filtering structuring the cercozoan communities both spatially and seasonally. Spatial analyses indicated that communities were correlated within a range of four meters. Seasonal variations of bactevirores and bacteria, and that of omnivores after a time-lapse, suggested a dynamic prey-predator succession. The most influential edaphic properties were moisture and clay content, which differentially affected each functional group. Our study is based on an intense sampling of protists at a small scale, thus providing a detailed description of the niches occupied by different taxa/functional groups and the ecological processes involved.
Degrune Florine、Boeddinghaus Runa S.、Rillig Matthias C.、Friedrich Michael W.、Kandeler Ellen、Bonkowski Michael、Fiore-Donno Anna Maria、Dumack Kenneth、Mahran Sven、Richter-Heitmann Tim、Regan Kathleen M.
Insitute of Biology, Plant Ecology, Freie Universit?t Berlin||Berlin-Brandenburg Institute of Advanced Biodiversity ResearchInstitute of Soil Science and Land Evaluation, Department of Soil Biology, University of HohenheimInsitute of Biology, Plant Ecology, Freie Universit?t Berlin||Berlin-Brandenburg Institute of Advanced Biodiversity ResearchMicrobial Ecophysiology Group, Faculty of Biology/Chemistry, University of BremenInstitute of Soil Science and Land Evaluation, Department of Soil Biology, University of HohenheimTerrestrial Ecology Group, Institute of Zoology, University of Cologne||Cluster of Excellence on Plant Sciences (CEPLAS)Terrestrial Ecology Group, Institute of Zoology, University of Cologne||Cluster of Excellence on Plant Sciences (CEPLAS)Terrestrial Ecology Group, Institute of Zoology, University of Cologne||Cluster of Excellence on Plant Sciences (CEPLAS)Institute of Soil Science and Land Evaluation, Department of Soil Biology, University of HohenheimMicrobial Ecophysiology Group, Faculty of Biology/Chemistry, University of BremenEcosystems Center, Marine Biological Laboratory
环境科学理论环境科学技术现状环境生物学微生物学
biogeographyfunctional traitssoil ecologyprotozoamicrobial assemblyenvironmental selectiondispersal limitation
Degrune Florine,Boeddinghaus Runa S.,Rillig Matthias C.,Friedrich Michael W.,Kandeler Ellen,Bonkowski Michael,Fiore-Donno Anna Maria,Dumack Kenneth,Mahran Sven,Richter-Heitmann Tim,Regan Kathleen M..Environmental selection and spatiotemporal structure of a major group of soil protists (Rhizaria: Cercozoa) in a temperate grassland[EB/OL].(2025-03-28)[2025-05-15].https://www.biorxiv.org/content/10.1101/531970.点此复制
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