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Article: Uncovering the processes of microbial community assembly in the near-surface sediments of a climate-sensitive glacier-fed lake

TitleUncovering the processes of microbial community assembly in the near-surface sediments of a climate-sensitive glacier-fed lake
Authors
KeywordsClimate change
Glacier-fed lake
Microbial community assembly
Specialists
Tibetan plateau
Issue Date1-Nov-2023
PublisherElsevier
Citation
Journal of Environmental Management, 2023, v. 345 How to Cite?
Abstract

Glacier-fed lakes are characterized by cold temperatures, high altitudes, and nutrient-poor conditions. Despite these challenging conditions, near-surface sediments of glacier-fed lakes harbor rich microbial communities that are critical for ecosystem functioning and serve as a bridge between aquatic ecology and the deep subsurface biosphere. However, there is limited knowledge regarding the microbial communities and their assembly pro-cesses in these sediments, which are highly vulnerable to climate change. To fill this knowledge gap, this study systematically analyzed environmental variables, microbial communities, diversity, co-occurrence relationships, and community assembly processes in the near-surface sediments of a glacier-fed lake in the Tibetan Plateau. The results revealed distinct vertical gradients in microbial diversity and subcommunities, highlighting the signifi-cant influence of selection processes and adaptive abilities on microbial communities. Specifically, specialists played a crucial role within the overall microbial communities. Microbial assembly was primarily driven by homogeneous selection, but its influence declined with increasing depth. In contrast, homogenizing dispersal showed an opposite pattern, and the bottom layer exhibited heterogeneous selection and undominated processes. These patterns of microbial assembly were primarily driven by environmental gradients, with significant con-tributions from processes associated to ammonium and organic matter deposition, as well as chemical precipi-tation in response to a warming climate. This study enhances our understanding of the microbial communities and assembly processes in the near-surface sediments of glacier-fed lakes and sheds light on geo-microbiological processes in climate-sensitive lacustrine sediments.


Persistent Identifierhttp://hdl.handle.net/10722/340894
ISSN
2023 Impact Factor: 8.0
2023 SCImago Journal Rankings: 1.771
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLu, Meiqing-
dc.contributor.authorLuo, Xin-
dc.contributor.authorJiao, Jiu Jimmy-
dc.contributor.authorLi, Hailong-
dc.contributor.authorKuang, Xingxing-
dc.contributor.authorWang, Xuejing-
dc.contributor.authorFeng, Yuqing-
dc.contributor.authorZheng, Chunmiao-
dc.date.accessioned2024-03-11T10:48:05Z-
dc.date.available2024-03-11T10:48:05Z-
dc.date.issued2023-11-01-
dc.identifier.citationJournal of Environmental Management, 2023, v. 345-
dc.identifier.issn0301-4797-
dc.identifier.urihttp://hdl.handle.net/10722/340894-
dc.description.abstract<p>Glacier-fed lakes are characterized by cold temperatures, high altitudes, and nutrient-poor conditions. Despite these challenging conditions, near-surface sediments of glacier-fed lakes harbor rich microbial communities that are critical for ecosystem functioning and serve as a bridge between aquatic ecology and the deep subsurface biosphere. However, there is limited knowledge regarding the microbial communities and their assembly pro-cesses in these sediments, which are highly vulnerable to climate change. To fill this knowledge gap, this study systematically analyzed environmental variables, microbial communities, diversity, co-occurrence relationships, and community assembly processes in the near-surface sediments of a glacier-fed lake in the Tibetan Plateau. The results revealed distinct vertical gradients in microbial diversity and subcommunities, highlighting the signifi-cant influence of selection processes and adaptive abilities on microbial communities. Specifically, specialists played a crucial role within the overall microbial communities. Microbial assembly was primarily driven by homogeneous selection, but its influence declined with increasing depth. In contrast, homogenizing dispersal showed an opposite pattern, and the bottom layer exhibited heterogeneous selection and undominated processes. These patterns of microbial assembly were primarily driven by environmental gradients, with significant con-tributions from processes associated to ammonium and organic matter deposition, as well as chemical precipi-tation in response to a warming climate. This study enhances our understanding of the microbial communities and assembly processes in the near-surface sediments of glacier-fed lakes and sheds light on geo-microbiological processes in climate-sensitive lacustrine sediments.<br></p>-
dc.languageeng-
dc.publisherElsevier-
dc.relation.ispartofJournal of Environmental Management-
dc.subjectClimate change-
dc.subjectGlacier-fed lake-
dc.subjectMicrobial community assembly-
dc.subjectSpecialists-
dc.subjectTibetan plateau-
dc.titleUncovering the processes of microbial community assembly in the near-surface sediments of a climate-sensitive glacier-fed lake-
dc.typeArticle-
dc.identifier.doi10.1016/j.jenvman.2023.118714-
dc.identifier.scopuseid_2-s2.0-85169836368-
dc.identifier.volume345-
dc.identifier.eissn1095-8630-
dc.identifier.isiWOS:001052881200001-
dc.identifier.issnl0301-4797-

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