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- W4280491262 abstract "Abstract Ciliates are unicellular heterotrophic organisms that play a key role in aquatic planktonic and benthic food webs. Advances in sedimentary DNA (sed-DNA) analysis offer the possibility to integrate these bioindicators in paleoenvironmental reconstructions. In this study, we used the top–bottom paleolimnological approach and metabarcoding techniques applied to sed-DNA to compare the recent and past (i.e. prior to major anthropogenic impacts) ciliate communities of 48 lakes located along an elevation gradient. Our results show an overall decline in the β-diversity in recent time, especially in lowland lakes, which are more strongly exposed to local human pressures. Analyses of the functional groups indicate important restructuration of the food web, including the recent increase in mixotrophs. Moreover, changes in the benthic ciliates were consistent with the widespread increase in deep water anoxia. Our results provided evidence that sed-DNA can uncover information about past ciliate communities on a wide variety of lakes. Overall, our study demonstrates the potential of using ciliates as new paleoindicators, integrating information from the pelagic to the benthic zones, and providing valuable insights into ecosystem functioning through a trait-based functional community approach. As paleoindicator, they thus offer a more holistic view on the long-term changes of aquatic ecosystems." @default.
- W4280491262 created "2022-05-22" @default.
- W4280491262 creator A5007531697 @default.
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- W4280491262 date "2022-05-12" @default.
- W4280491262 modified "2023-10-03" @default.
- W4280491262 title "Paleoreconstructions of ciliate communities reveal long-term ecological changes in temperate lakes" @default.
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- W4280491262 doi "https://doi.org/10.1038/s41598-022-12041-7" @default.
- W4280491262 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35551223" @default.
- W4280491262 hasPublicationYear "2022" @default.
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