Community Assembly and Co-Occurrence Patterns of Microeukaryotes in Thermokarst Lakes of the Yellow River Source Area
Thermokarst lakes are important aquatic ecosystems in cold regions, experiencing several changes due to global warming. However, the fundamental assembly mechanisms of microeukaryotic communities in thermokarst lakes are unknown. In this study, we examined the assembly processes and co-occurrence ne...
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MDPI AG
2022-02-01
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| Series: | Microorganisms |
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| Online Access: | https://www.mdpi.com/2076-2607/10/2/481 |
| _version_ | 1797477799316946944 |
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| author | Ze Ren Kang Ma Xuan Jia Qing Wang Cheng Zhang Xia Li |
| author_facet | Ze Ren Kang Ma Xuan Jia Qing Wang Cheng Zhang Xia Li |
| author_sort | Ze Ren |
| collection | DOAJ |
| description | Thermokarst lakes are important aquatic ecosystems in cold regions, experiencing several changes due to global warming. However, the fundamental assembly mechanisms of microeukaryotic communities in thermokarst lakes are unknown. In this study, we examined the assembly processes and co-occurrence networks of microeukaryotic communities in sediment and water of thermokarst lakes in the Yellow River Source Area. Sediment microeukaryotic communities had a significantly lower α-diversity but higher β-diversity than water microeukaryotic communities. pH, sediment organic carbon, and total phosphorus significantly affected taxonomic and phylogenetic diversity of sediment communities, while conductivity was a significant driver for water communities. Both sediment and water microeukaryotic communities were strongly governed by dispersal limitation. However, deterministic processes, especially homogenous selection, were more relevant in structuring microeukaryotic communities in water than those in sediment. Changes in total nitrogen and phosphorus in sediment could contribute to shift its microeukaryotic communities from homogeneous selection to stochastic processes. Co-occurrence networks showed that water microeukaryotic communities are more complex and interconnected but have lower modularity than sediment microeukaryotic communities. The water microeukaryotic network had more modules than the sediment microeukaryotic network. These modules were dominated by different taxonomic groups and associated to different environmental variables. |
| first_indexed | 2024-03-09T21:22:51Z |
| format | Article |
| id | doaj.art-88215b8c52fc4a9fa3f25ad9a67cc195 |
| institution | Directory Open Access Journal |
| issn | 2076-2607 |
| language | English |
| last_indexed | 2024-03-09T21:22:51Z |
| publishDate | 2022-02-01 |
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| series | Microorganisms |
| spelling | doaj.art-88215b8c52fc4a9fa3f25ad9a67cc1952023-11-23T21:16:51ZengMDPI AGMicroorganisms2076-26072022-02-0110248110.3390/microorganisms10020481Community Assembly and Co-Occurrence Patterns of Microeukaryotes in Thermokarst Lakes of the Yellow River Source AreaZe Ren0Kang Ma1Xuan Jia2Qing Wang3Cheng Zhang4Xia Li5Research and Development Center for Watershed Environmental Eco-Engineering, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai 519087, ChinaSchool of Environment, Beijing Normal University, Beijing 100875, ChinaCollege of Education for the Future, Beijing Normal University, Zhuhai 519087, ChinaResearch and Development Center for Watershed Environmental Eco-Engineering, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai 519087, ChinaResearch and Development Center for Watershed Environmental Eco-Engineering, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai 519087, ChinaResearch and Development Center for Watershed Environmental Eco-Engineering, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai 519087, ChinaThermokarst lakes are important aquatic ecosystems in cold regions, experiencing several changes due to global warming. However, the fundamental assembly mechanisms of microeukaryotic communities in thermokarst lakes are unknown. In this study, we examined the assembly processes and co-occurrence networks of microeukaryotic communities in sediment and water of thermokarst lakes in the Yellow River Source Area. Sediment microeukaryotic communities had a significantly lower α-diversity but higher β-diversity than water microeukaryotic communities. pH, sediment organic carbon, and total phosphorus significantly affected taxonomic and phylogenetic diversity of sediment communities, while conductivity was a significant driver for water communities. Both sediment and water microeukaryotic communities were strongly governed by dispersal limitation. However, deterministic processes, especially homogenous selection, were more relevant in structuring microeukaryotic communities in water than those in sediment. Changes in total nitrogen and phosphorus in sediment could contribute to shift its microeukaryotic communities from homogeneous selection to stochastic processes. Co-occurrence networks showed that water microeukaryotic communities are more complex and interconnected but have lower modularity than sediment microeukaryotic communities. The water microeukaryotic network had more modules than the sediment microeukaryotic network. These modules were dominated by different taxonomic groups and associated to different environmental variables.https://www.mdpi.com/2076-2607/10/2/481microeukaryotesdeterministic processstochastic processco-occurrenceQinghai–Tibet Plateau |
| spellingShingle | Ze Ren Kang Ma Xuan Jia Qing Wang Cheng Zhang Xia Li Community Assembly and Co-Occurrence Patterns of Microeukaryotes in Thermokarst Lakes of the Yellow River Source Area Microorganisms microeukaryotes deterministic process stochastic process co-occurrence Qinghai–Tibet Plateau |
| title | Community Assembly and Co-Occurrence Patterns of Microeukaryotes in Thermokarst Lakes of the Yellow River Source Area |
| title_full | Community Assembly and Co-Occurrence Patterns of Microeukaryotes in Thermokarst Lakes of the Yellow River Source Area |
| title_fullStr | Community Assembly and Co-Occurrence Patterns of Microeukaryotes in Thermokarst Lakes of the Yellow River Source Area |
| title_full_unstemmed | Community Assembly and Co-Occurrence Patterns of Microeukaryotes in Thermokarst Lakes of the Yellow River Source Area |
| title_short | Community Assembly and Co-Occurrence Patterns of Microeukaryotes in Thermokarst Lakes of the Yellow River Source Area |
| title_sort | community assembly and co occurrence patterns of microeukaryotes in thermokarst lakes of the yellow river source area |
| topic | microeukaryotes deterministic process stochastic process co-occurrence Qinghai–Tibet Plateau |
| url | https://www.mdpi.com/2076-2607/10/2/481 |
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