Biogeography of Micro-Eukaryotic Communities in Sediment of Thermokarst Lakes Are Jointly Controlled by Spatial, Climatic, and Physicochemical Factors Across the Qinghai-Tibet Plateau
Thermokarst lakes are formed following ice-rich permafrost thaw and widely distribute in the cold regions with high latitude and elevation. However, the micro-eukaryotic communities (MECs) in thermokarst lakes are not well studied. Employing 18S rRNA gene sequencing, we assessed the biogeography of...
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ftdoajarticles:oai:doaj.org/article:eb6a443d48684e66911aa6e8d5a11e1b 2023-05-15T16:37:50+02:00 Biogeography of Micro-Eukaryotic Communities in Sediment of Thermokarst Lakes Are Jointly Controlled by Spatial, Climatic, and Physicochemical Factors Across the Qinghai-Tibet Plateau Ze Ren Yitong Zhang Xia Li Cheng Zhang 2022-05-01T00:00:00Z https://doi.org/10.3389/fevo.2022.901107 https://doaj.org/article/eb6a443d48684e66911aa6e8d5a11e1b EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fevo.2022.901107/full https://doaj.org/toc/2296-701X 2296-701X doi:10.3389/fevo.2022.901107 https://doaj.org/article/eb6a443d48684e66911aa6e8d5a11e1b Frontiers in Ecology and Evolution, Vol 10 (2022) thermokarst lakes sediment microbial eukaryotes latitude climate nutrient Evolution QH359-425 Ecology QH540-549.5 article 2022 ftdoajarticles https://doi.org/10.3389/fevo.2022.901107 2022-12-30T22:36:18Z Thermokarst lakes are formed following ice-rich permafrost thaw and widely distribute in the cold regions with high latitude and elevation. However, the micro-eukaryotic communities (MECs) in thermokarst lakes are not well studied. Employing 18S rRNA gene sequencing, we assessed the biogeography of MECs and their driving factors in sediments of thermokarst lakes across the Qinghai-Tibet Plateau (QTP). Results showed that Diatom, Gastrotricha, Nematozoa, Ciliophora, and Cercozoa were dominant lineages in relative abundance and OTU richness. MECs varied substantially across the lakes in terms of diversity and composition. Structural equation modeling and mantel test showed that both OTU richness and community structure of MECs had close relationships with spatial factors, climatic factors, and sediment properties, particularly with latitude, mean annual precipitation, pH, as well as nutrient concentrations and stoichiometric ratios. Moreover, different groups of microbial eukaryotes (taxonomic groups and co-occurrence modules) responded differentially to the measured environmental variables. The results suggested that the biogeography of sediment MECs of thermokarst lakes on the QTP were jointly controlled by spatial and climatic factors as well as sediment properties. This study provides the first view of the composition, diversity, and underlying drivers of MECs dynamic in surface sediments of thermokarst lakes across the QTP. Article in Journal/Newspaper Ice permafrost Thermokarst Directory of Open Access Journals: DOAJ Articles Frontiers in Ecology and Evolution 10 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
thermokarst lakes sediment microbial eukaryotes latitude climate nutrient Evolution QH359-425 Ecology QH540-549.5 |
spellingShingle |
thermokarst lakes sediment microbial eukaryotes latitude climate nutrient Evolution QH359-425 Ecology QH540-549.5 Ze Ren Yitong Zhang Xia Li Cheng Zhang Biogeography of Micro-Eukaryotic Communities in Sediment of Thermokarst Lakes Are Jointly Controlled by Spatial, Climatic, and Physicochemical Factors Across the Qinghai-Tibet Plateau |
topic_facet |
thermokarst lakes sediment microbial eukaryotes latitude climate nutrient Evolution QH359-425 Ecology QH540-549.5 |
description |
Thermokarst lakes are formed following ice-rich permafrost thaw and widely distribute in the cold regions with high latitude and elevation. However, the micro-eukaryotic communities (MECs) in thermokarst lakes are not well studied. Employing 18S rRNA gene sequencing, we assessed the biogeography of MECs and their driving factors in sediments of thermokarst lakes across the Qinghai-Tibet Plateau (QTP). Results showed that Diatom, Gastrotricha, Nematozoa, Ciliophora, and Cercozoa were dominant lineages in relative abundance and OTU richness. MECs varied substantially across the lakes in terms of diversity and composition. Structural equation modeling and mantel test showed that both OTU richness and community structure of MECs had close relationships with spatial factors, climatic factors, and sediment properties, particularly with latitude, mean annual precipitation, pH, as well as nutrient concentrations and stoichiometric ratios. Moreover, different groups of microbial eukaryotes (taxonomic groups and co-occurrence modules) responded differentially to the measured environmental variables. The results suggested that the biogeography of sediment MECs of thermokarst lakes on the QTP were jointly controlled by spatial and climatic factors as well as sediment properties. This study provides the first view of the composition, diversity, and underlying drivers of MECs dynamic in surface sediments of thermokarst lakes across the QTP. |
format |
Article in Journal/Newspaper |
author |
Ze Ren Yitong Zhang Xia Li Cheng Zhang |
author_facet |
Ze Ren Yitong Zhang Xia Li Cheng Zhang |
author_sort |
Ze Ren |
title |
Biogeography of Micro-Eukaryotic Communities in Sediment of Thermokarst Lakes Are Jointly Controlled by Spatial, Climatic, and Physicochemical Factors Across the Qinghai-Tibet Plateau |
title_short |
Biogeography of Micro-Eukaryotic Communities in Sediment of Thermokarst Lakes Are Jointly Controlled by Spatial, Climatic, and Physicochemical Factors Across the Qinghai-Tibet Plateau |
title_full |
Biogeography of Micro-Eukaryotic Communities in Sediment of Thermokarst Lakes Are Jointly Controlled by Spatial, Climatic, and Physicochemical Factors Across the Qinghai-Tibet Plateau |
title_fullStr |
Biogeography of Micro-Eukaryotic Communities in Sediment of Thermokarst Lakes Are Jointly Controlled by Spatial, Climatic, and Physicochemical Factors Across the Qinghai-Tibet Plateau |
title_full_unstemmed |
Biogeography of Micro-Eukaryotic Communities in Sediment of Thermokarst Lakes Are Jointly Controlled by Spatial, Climatic, and Physicochemical Factors Across the Qinghai-Tibet Plateau |
title_sort |
biogeography of micro-eukaryotic communities in sediment of thermokarst lakes are jointly controlled by spatial, climatic, and physicochemical factors across the qinghai-tibet plateau |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
https://doi.org/10.3389/fevo.2022.901107 https://doaj.org/article/eb6a443d48684e66911aa6e8d5a11e1b |
genre |
Ice permafrost Thermokarst |
genre_facet |
Ice permafrost Thermokarst |
op_source |
Frontiers in Ecology and Evolution, Vol 10 (2022) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fevo.2022.901107/full https://doaj.org/toc/2296-701X 2296-701X doi:10.3389/fevo.2022.901107 https://doaj.org/article/eb6a443d48684e66911aa6e8d5a11e1b |
op_doi |
https://doi.org/10.3389/fevo.2022.901107 |
container_title |
Frontiers in Ecology and Evolution |
container_volume |
10 |
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1766028134936739840 |