Abundant and Rare Bacterial Taxa Structuring Differently in Sediment and Water in Thermokarst Lakes in the Yellow River Source Area, Qinghai-Tibet Plateau
Thermokarst lakes are forming from permafrost thaw and are severely affected by accelerating climate change. Sediment and water in these lakes are distinct habitats but closely connected. However, our understanding of the differences and linkages between sediment and water in thermokarst lakes remai...
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ftpubmed:oai:pubmedcentral.nih.gov:9002311 2023-05-15T17:58:06+02:00 Abundant and Rare Bacterial Taxa Structuring Differently in Sediment and Water in Thermokarst Lakes in the Yellow River Source Area, Qinghai-Tibet Plateau Ren, Ze Zhang, Cheng Li, Xia Ma, Kang Cui, Baoshan 2022-03-29 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9002311/ https://doi.org/10.3389/fmicb.2022.774514 en eng Frontiers Media S.A. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9002311/ http://dx.doi.org/10.3389/fmicb.2022.774514 Copyright © 2022 Ren, Zhang, Li, Ma and Cui. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. CC-BY Front Microbiol Microbiology Text 2022 ftpubmed https://doi.org/10.3389/fmicb.2022.774514 2022-04-17T01:07:34Z Thermokarst lakes are forming from permafrost thaw and are severely affected by accelerating climate change. Sediment and water in these lakes are distinct habitats but closely connected. However, our understanding of the differences and linkages between sediment and water in thermokarst lakes remains largely unknown, especially from the perspective of community assembly mechanisms. Here, we examined bacterial communities in sediment and water in thermokarst lakes in the Yellow River Source area, Qinghai-Tibet Plateau. Bacterial taxa were divided into abundant and rare according to their relative abundance, and the Sorensen dissimilarity (β(sor)) was partitioned into turnover (β(turn)) and nestedness (β(nest)). The whole bacterial communities and the abundant and rare subcommunities differed substantially between sediment and water in taxonomical composition, α-diversity, and β-diversity. Sediment had significantly lower α-diversity indexes but higher β-diversity than water. In general, bacterial communities are predominantly governed by strong turnover processes (β(turn)/β(sor) ratio of 0.925). Bacterial communities in sediment had a significantly higher β(turn)/β(sor) ratio than in water. Abundant subcommunities were significantly lower in the β(turn)/β(sor) ratio compared with rare subcommunities. The results suggest that the bacterial communities of thermokarst lakes, especially rare subcommunities or particularly in sediment, might be strongly structured by heterogeneity in the source material, environmental filtering, and geographical isolation, leading to compositionally distinct communities. This integral study increased our current knowledge of thermokarst lakes, enhancing our understanding of the community assembly rules and ecosystem structures and processes of these rapidly changing and vulnerable ecosystems. Text permafrost Thermokarst PubMed Central (PMC) Frontiers in Microbiology 13 |
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Microbiology |
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Microbiology Ren, Ze Zhang, Cheng Li, Xia Ma, Kang Cui, Baoshan Abundant and Rare Bacterial Taxa Structuring Differently in Sediment and Water in Thermokarst Lakes in the Yellow River Source Area, Qinghai-Tibet Plateau |
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Microbiology |
description |
Thermokarst lakes are forming from permafrost thaw and are severely affected by accelerating climate change. Sediment and water in these lakes are distinct habitats but closely connected. However, our understanding of the differences and linkages between sediment and water in thermokarst lakes remains largely unknown, especially from the perspective of community assembly mechanisms. Here, we examined bacterial communities in sediment and water in thermokarst lakes in the Yellow River Source area, Qinghai-Tibet Plateau. Bacterial taxa were divided into abundant and rare according to their relative abundance, and the Sorensen dissimilarity (β(sor)) was partitioned into turnover (β(turn)) and nestedness (β(nest)). The whole bacterial communities and the abundant and rare subcommunities differed substantially between sediment and water in taxonomical composition, α-diversity, and β-diversity. Sediment had significantly lower α-diversity indexes but higher β-diversity than water. In general, bacterial communities are predominantly governed by strong turnover processes (β(turn)/β(sor) ratio of 0.925). Bacterial communities in sediment had a significantly higher β(turn)/β(sor) ratio than in water. Abundant subcommunities were significantly lower in the β(turn)/β(sor) ratio compared with rare subcommunities. The results suggest that the bacterial communities of thermokarst lakes, especially rare subcommunities or particularly in sediment, might be strongly structured by heterogeneity in the source material, environmental filtering, and geographical isolation, leading to compositionally distinct communities. This integral study increased our current knowledge of thermokarst lakes, enhancing our understanding of the community assembly rules and ecosystem structures and processes of these rapidly changing and vulnerable ecosystems. |
format |
Text |
author |
Ren, Ze Zhang, Cheng Li, Xia Ma, Kang Cui, Baoshan |
author_facet |
Ren, Ze Zhang, Cheng Li, Xia Ma, Kang Cui, Baoshan |
author_sort |
Ren, Ze |
title |
Abundant and Rare Bacterial Taxa Structuring Differently in Sediment and Water in Thermokarst Lakes in the Yellow River Source Area, Qinghai-Tibet Plateau |
title_short |
Abundant and Rare Bacterial Taxa Structuring Differently in Sediment and Water in Thermokarst Lakes in the Yellow River Source Area, Qinghai-Tibet Plateau |
title_full |
Abundant and Rare Bacterial Taxa Structuring Differently in Sediment and Water in Thermokarst Lakes in the Yellow River Source Area, Qinghai-Tibet Plateau |
title_fullStr |
Abundant and Rare Bacterial Taxa Structuring Differently in Sediment and Water in Thermokarst Lakes in the Yellow River Source Area, Qinghai-Tibet Plateau |
title_full_unstemmed |
Abundant and Rare Bacterial Taxa Structuring Differently in Sediment and Water in Thermokarst Lakes in the Yellow River Source Area, Qinghai-Tibet Plateau |
title_sort |
abundant and rare bacterial taxa structuring differently in sediment and water in thermokarst lakes in the yellow river source area, qinghai-tibet plateau |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9002311/ https://doi.org/10.3389/fmicb.2022.774514 |
genre |
permafrost Thermokarst |
genre_facet |
permafrost Thermokarst |
op_source |
Front Microbiol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9002311/ http://dx.doi.org/10.3389/fmicb.2022.774514 |
op_rights |
Copyright © 2022 Ren, Zhang, Li, Ma and Cui. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
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CC-BY |
op_doi |
https://doi.org/10.3389/fmicb.2022.774514 |
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Frontiers in Microbiology |
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13 |
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1766166635962433536 |