Rare bacterial biosphere is more environmental controlled and deterministically governed than abundant one in sediment of thermokarst lakes across the Qinghai-Tibet Plateau
Thermokarst lakes are widely distributed in cold regions as a result of ice-rich permafrost thaw. Disentangling the biogeography of abundant and rare microbes is essential to understanding the environmental influences, assembly mechanisms, and responses to climate change of bacterial communities in...
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ftdoajarticles:oai:doaj.org/article:575643edc3474fee97776d02ca28272d 2023-05-15T16:37:52+02:00 Rare bacterial biosphere is more environmental controlled and deterministically governed than abundant one in sediment of thermokarst lakes across the Qinghai-Tibet Plateau Ze Ren Wei Luo Cheng Zhang 2022-07-01T00:00:00Z https://doi.org/10.3389/fmicb.2022.944646 https://doaj.org/article/575643edc3474fee97776d02ca28272d EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fmicb.2022.944646/full https://doaj.org/toc/1664-302X 1664-302X doi:10.3389/fmicb.2022.944646 https://doaj.org/article/575643edc3474fee97776d02ca28272d Frontiers in Microbiology, Vol 13 (2022) thermokarst lakes sediment abundant and rare taxa assembly mechanisms Qinghai-Tibet Plateau Microbiology QR1-502 article 2022 ftdoajarticles https://doi.org/10.3389/fmicb.2022.944646 2022-12-30T22:44:39Z Thermokarst lakes are widely distributed in cold regions as a result of ice-rich permafrost thaw. Disentangling the biogeography of abundant and rare microbes is essential to understanding the environmental influences, assembly mechanisms, and responses to climate change of bacterial communities in thermokarst lakes. In light of this, we assessed the abundant and rare bacterial subcommunities in sediments from thermokarst lakes across the Qinghai-Tibet Plateau (QTP). The operational taxonomic unit (OTU) richness was more strongly associated with location and climate factors for abundant subcommunities, while more strongly associated with physicochemical variables for rare subcommunities. The relative abundance of abundant and rare taxa showed opposite patterns with abundant taxa having greater relative abundance at higher latitude and pH, but at lower mean annual precipitation and nutrients. Both the abundant and rare subcommunities had a clear distribution pattern along the gradient of latitude and mean annual precipitation. Abundant subcommunities were dominantly shaped by dispersal limitation processes (80.9%), while rare subcommunities were shaped almost equally by deterministic (47.3%) and stochastic (52.7%) processes. The balance between stochastic and deterministic processes was strongly environmentally adjusted for rare subcommunities, while not associated with environmental changes for abundant subcommunities. The results shed light on biogeography patterns and structuring mechanisms of bacterial communities in thermokarst lakes, improving our ability to predict the influences of future climate change on these lakes. Article in Journal/Newspaper Ice permafrost Thermokarst Directory of Open Access Journals: DOAJ Articles Frontiers in Microbiology 13 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
thermokarst lakes sediment abundant and rare taxa assembly mechanisms Qinghai-Tibet Plateau Microbiology QR1-502 |
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thermokarst lakes sediment abundant and rare taxa assembly mechanisms Qinghai-Tibet Plateau Microbiology QR1-502 Ze Ren Wei Luo Cheng Zhang Rare bacterial biosphere is more environmental controlled and deterministically governed than abundant one in sediment of thermokarst lakes across the Qinghai-Tibet Plateau |
topic_facet |
thermokarst lakes sediment abundant and rare taxa assembly mechanisms Qinghai-Tibet Plateau Microbiology QR1-502 |
description |
Thermokarst lakes are widely distributed in cold regions as a result of ice-rich permafrost thaw. Disentangling the biogeography of abundant and rare microbes is essential to understanding the environmental influences, assembly mechanisms, and responses to climate change of bacterial communities in thermokarst lakes. In light of this, we assessed the abundant and rare bacterial subcommunities in sediments from thermokarst lakes across the Qinghai-Tibet Plateau (QTP). The operational taxonomic unit (OTU) richness was more strongly associated with location and climate factors for abundant subcommunities, while more strongly associated with physicochemical variables for rare subcommunities. The relative abundance of abundant and rare taxa showed opposite patterns with abundant taxa having greater relative abundance at higher latitude and pH, but at lower mean annual precipitation and nutrients. Both the abundant and rare subcommunities had a clear distribution pattern along the gradient of latitude and mean annual precipitation. Abundant subcommunities were dominantly shaped by dispersal limitation processes (80.9%), while rare subcommunities were shaped almost equally by deterministic (47.3%) and stochastic (52.7%) processes. The balance between stochastic and deterministic processes was strongly environmentally adjusted for rare subcommunities, while not associated with environmental changes for abundant subcommunities. The results shed light on biogeography patterns and structuring mechanisms of bacterial communities in thermokarst lakes, improving our ability to predict the influences of future climate change on these lakes. |
format |
Article in Journal/Newspaper |
author |
Ze Ren Wei Luo Cheng Zhang |
author_facet |
Ze Ren Wei Luo Cheng Zhang |
author_sort |
Ze Ren |
title |
Rare bacterial biosphere is more environmental controlled and deterministically governed than abundant one in sediment of thermokarst lakes across the Qinghai-Tibet Plateau |
title_short |
Rare bacterial biosphere is more environmental controlled and deterministically governed than abundant one in sediment of thermokarst lakes across the Qinghai-Tibet Plateau |
title_full |
Rare bacterial biosphere is more environmental controlled and deterministically governed than abundant one in sediment of thermokarst lakes across the Qinghai-Tibet Plateau |
title_fullStr |
Rare bacterial biosphere is more environmental controlled and deterministically governed than abundant one in sediment of thermokarst lakes across the Qinghai-Tibet Plateau |
title_full_unstemmed |
Rare bacterial biosphere is more environmental controlled and deterministically governed than abundant one in sediment of thermokarst lakes across the Qinghai-Tibet Plateau |
title_sort |
rare bacterial biosphere is more environmental controlled and deterministically governed than abundant one in sediment of thermokarst lakes across the qinghai-tibet plateau |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
https://doi.org/10.3389/fmicb.2022.944646 https://doaj.org/article/575643edc3474fee97776d02ca28272d |
genre |
Ice permafrost Thermokarst |
genre_facet |
Ice permafrost Thermokarst |
op_source |
Frontiers in Microbiology, Vol 13 (2022) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fmicb.2022.944646/full https://doaj.org/toc/1664-302X 1664-302X doi:10.3389/fmicb.2022.944646 https://doaj.org/article/575643edc3474fee97776d02ca28272d |
op_doi |
https://doi.org/10.3389/fmicb.2022.944646 |
container_title |
Frontiers in Microbiology |
container_volume |
13 |
_version_ |
1766028159156748288 |