Diversity and co-occurrence networks of bacterial and fungal communities on two typical debris-covered glaciers, southeastern Tibetan Plateau
文献类型:期刊论文
作者 | Hu, Yang2,3; Fair, Heather1; Liu, Qiao3; Wang, Ziwei2,3; Duan, Baoli3; Lu, Xuyang3 |
刊名 | MICROBIOLOGICAL RESEARCH |
出版日期 | 2023-08-01 |
卷号 | 273页码:12 |
ISSN号 | 0944-5013 |
关键词 | Debris-covered glaciers Microbial community Microbial diversity High-throughput sequencing |
DOI | 10.1016/j.micres.2023.127409 |
英文摘要 | Debris-covered glaciers (DCGs) are globally distributed and thought to contain greater microbial diversity than clean surface continental glaciers, but the ecological characteristics of microbial communities on the surface of DCGs have remained underexplored. Here, we investigated bacterial and fungal diversity and co-occurrence networks on the supraglacial debris habitat of two DCGs (Hailuogou and Dagongba Glaciers) in the south-eastern Tibetan Plateau. We found that the supraglacial debris harbored abundant microbes with Proteobacteria occupying more than half (51.5%) of the total bacteria operational taxonomic units. The composition, diversity, and co-occurrence networks of both bacterial and fungal communities in the debris were significantly different between Hailuogou Glacier and Dagongba Glacier even though the glaciers are geographically adjacent within the same mountain range. Bacteria were more diverse in the debris of the Dagongba Glacier, where a lower surface velocity and thicker debris layer allowed the supraglacial debris to continuously weather and accumulate nutrients. Fungi were more diverse in the debris of the Hailuogou Glacier, which experiences a wetter monsoonal climate, is richer in calcium, has greater debris instability, and greater ice velocity than the Dagongba Glacier. These factors may provide ideal conditions for the dispersal and propagation of fungi spores on the Hailuogou Glacier. In addition, we found an obvious gradient of bacterial diversity along the supraglacial debris transect on the Hailuogou Glacier. Bacterial diversity was lower where debris cover was thin and scattered and became more diverse near the glacial terminus in thick, slow-moving debris. No such increasing bacterial pattern was detected on the Dagongba Glacier, which implies a positive relationship of debris age, thickness, and weathering on bacterial diversity. Additionally, a highly connected bacterial co-occurrence network with low modularity was found in the debris of the Hailuogou Glacier. In contrast, debris from the Dagongba Glacier exhibited less connected but more modularized co-occurrence networks of both bacterial and fungal communities. These findings indicate that less disturbed supraglacial debris conditions are crucial for microbes to form stable communities on DCGs. |
WOS关键词 | DRIVING FORCES ; SNOW BACTERIA ; POLAROMONAS ; PATTERNS ; LIMITATION ; FOREFIELD ; THICKNESS ; RETREAT ; REGION ; SCALE |
资助项目 | Sichuan Science and Technology Program[2020JDJQ0002] ; Sichuan Science and Technology Program[2021JDJQ0009] ; National Natural Science Foundation of China[41877338] ; National Science Foundation (NSF) Postdoctoral Research Fellowships in Biology[2010852] |
WOS研究方向 | Microbiology |
语种 | 英语 |
出版者 | ELSEVIER GMBH |
WOS记录号 | WOS:001008461500001 |
资助机构 | Sichuan Science and Technology Program ; National Natural Science Foundation of China ; National Science Foundation (NSF) Postdoctoral Research Fellowships in Biology |
源URL | [http://ir.imde.ac.cn/handle/131551/57548] |
专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
通讯作者 | Duan, Baoli; Lu, Xuyang |
作者单位 | 1.Univ Minnesota, Dept Plant & Microbial Biol, St Paul, MN 55108 USA 2.Univ Chinese Acad Sci, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610299, Sichuan, Peoples R China |
推荐引用方式 GB/T 7714 | Hu, Yang,Fair, Heather,Liu, Qiao,et al. Diversity and co-occurrence networks of bacterial and fungal communities on two typical debris-covered glaciers, southeastern Tibetan Plateau[J]. MICROBIOLOGICAL RESEARCH,2023,273:12. |
APA | Hu, Yang,Fair, Heather,Liu, Qiao,Wang, Ziwei,Duan, Baoli,&Lu, Xuyang.(2023).Diversity and co-occurrence networks of bacterial and fungal communities on two typical debris-covered glaciers, southeastern Tibetan Plateau.MICROBIOLOGICAL RESEARCH,273,12. |
MLA | Hu, Yang,et al."Diversity and co-occurrence networks of bacterial and fungal communities on two typical debris-covered glaciers, southeastern Tibetan Plateau".MICROBIOLOGICAL RESEARCH 273(2023):12. |
入库方式: OAI收割
来源:成都山地灾害与环境研究所
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