Diversity and assembly processes of microbial eukaryotic communities in Fildes Peninsula Lakes (West Antarctica)
<p>The diversity, co-occurrence patterns, and assembly processes of microbial eukaryotes (0.2–20 <span class="inline-formula">µ</span>m) in Antarctic freshwater lakes are not well understood, despite their wide distribution and ecological importance. This study used Illum...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2022-09-01
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| Series: | Biogeosciences |
| Online Access: | https://bg.copernicus.org/articles/19/4639/2022/bg-19-4639-2022.pdf |
| _version_ | 1798000113107337216 |
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| author | C. Zhang C. Zhang H. Li H. Li H. Li Y. Zeng Y. Zeng Y. Zeng H. Ding H. Ding H. Ding B. Wang Y. Li Z. Ji Y. Bi W. Luo W. Luo W. Luo |
| author_facet | C. Zhang C. Zhang H. Li H. Li H. Li Y. Zeng Y. Zeng Y. Zeng H. Ding H. Ding H. Ding B. Wang Y. Li Z. Ji Y. Bi W. Luo W. Luo W. Luo |
| author_sort | C. Zhang |
| collection | DOAJ |
| description | <p>The diversity, co-occurrence patterns, and assembly processes of microbial
eukaryotes (0.2–20 <span class="inline-formula">µ</span>m) in Antarctic freshwater lakes are not well
understood, despite their wide distribution and ecological importance. This
study used Illumina high-throughput sequencing to investigate the microbial
eukaryotic communities of five freshwater lakes on the Fildes Peninsula over
three summer seasons. A total of 28 phyla were detected, with phytoplankton
occupying the highest percentage of sequences (accounting for up to 98 %).
The dominant taxa consisted of Chrysophyta, Chlorophyta, and Cryptophyta.
The species richness (113–268) and Shannon index (1.70–3.50) varied among
the lakes, with higher values recorded in Lake Chang Hu and Lake Kitec and
the lowest value obtained for Lake Yue Ya. There were significant
differences between the microbial eukaryotic communities of the lakes, with
spatial and temporal heterogeneity in the relative abundance of the
dominant taxa (<span class="inline-formula"><i>P</i><0.05</span>). Environmental variables explained about
39 % of the variation in community structures, with water temperature and
phosphate identified as the driving factors (<span class="inline-formula"><i>P</i><0.05</span>). Network
analysis revealed comprehensive co-occurrence relationships (positive
correlation 82 % vs. negative correlation 18 %). The neutral community
model revealed that neutral processes explained more than 55 % of the
community variation. Stochastic processes (e.g. homogenizing dispersal and
undominated processes) predominated in community assembly over the
deterministic processes. These findings demonstrate the diversity of the
microbial eukaryotic communities in the freshwater lakes of the Fildes
Peninsula and have important implications for understanding the community
assembly in these ecosystems.</p> |
| first_indexed | 2024-04-11T11:15:07Z |
| format | Article |
| id | doaj.art-8232b8d313c643119a8c1616b0a2b0cf |
| institution | Directory Open Access Journal |
| issn | 1726-4170 1726-4189 |
| language | English |
| last_indexed | 2024-04-11T11:15:07Z |
| publishDate | 2022-09-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Biogeosciences |
| spelling | doaj.art-8232b8d313c643119a8c1616b0a2b0cf2022-12-22T04:27:16ZengCopernicus PublicationsBiogeosciences1726-41701726-41892022-09-01194639465410.5194/bg-19-4639-2022Diversity and assembly processes of microbial eukaryotic communities in Fildes Peninsula Lakes (West Antarctica)C. Zhang0C. Zhang1H. Li2H. Li3H. Li4Y. Zeng5Y. Zeng6Y. Zeng7H. Ding8H. Ding9H. Ding10B. Wang11Y. Li12Z. Ji13Y. Bi14W. Luo15W. Luo16W. Luo17Key Laboratory for Polar Science, Polar Research Institute of China, Ministry of Natural Resources, Shanghai 200136, ChinaState Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, ChinaKey Laboratory for Polar Science, Polar Research Institute of China, Ministry of Natural Resources, Shanghai 200136, ChinaAntarctic Great Wall Ecology National Observation and Research Station, Polar Research Institute of China, Ministry of Natural Resources, Shanghai 200136, ChinaSchool of Oceanography, Shanghai Jiao Tong University, Shanghai 200030, ChinaKey Laboratory for Polar Science, Polar Research Institute of China, Ministry of Natural Resources, Shanghai 200136, ChinaAntarctic Great Wall Ecology National Observation and Research Station, Polar Research Institute of China, Ministry of Natural Resources, Shanghai 200136, ChinaSchool of Oceanography, Shanghai Jiao Tong University, Shanghai 200030, ChinaKey Laboratory for Polar Science, Polar Research Institute of China, Ministry of Natural Resources, Shanghai 200136, ChinaAntarctic Great Wall Ecology National Observation and Research Station, Polar Research Institute of China, Ministry of Natural Resources, Shanghai 200136, ChinaSchool of Oceanography, Shanghai Jiao Tong University, Shanghai 200030, ChinaKey Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, ChinaKey Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, ChinaKey Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, ChinaState Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, ChinaKey Laboratory for Polar Science, Polar Research Institute of China, Ministry of Natural Resources, Shanghai 200136, ChinaAntarctic Great Wall Ecology National Observation and Research Station, Polar Research Institute of China, Ministry of Natural Resources, Shanghai 200136, ChinaSchool of Oceanography, Shanghai Jiao Tong University, Shanghai 200030, China<p>The diversity, co-occurrence patterns, and assembly processes of microbial eukaryotes (0.2–20 <span class="inline-formula">µ</span>m) in Antarctic freshwater lakes are not well understood, despite their wide distribution and ecological importance. This study used Illumina high-throughput sequencing to investigate the microbial eukaryotic communities of five freshwater lakes on the Fildes Peninsula over three summer seasons. A total of 28 phyla were detected, with phytoplankton occupying the highest percentage of sequences (accounting for up to 98 %). The dominant taxa consisted of Chrysophyta, Chlorophyta, and Cryptophyta. The species richness (113–268) and Shannon index (1.70–3.50) varied among the lakes, with higher values recorded in Lake Chang Hu and Lake Kitec and the lowest value obtained for Lake Yue Ya. There were significant differences between the microbial eukaryotic communities of the lakes, with spatial and temporal heterogeneity in the relative abundance of the dominant taxa (<span class="inline-formula"><i>P</i><0.05</span>). Environmental variables explained about 39 % of the variation in community structures, with water temperature and phosphate identified as the driving factors (<span class="inline-formula"><i>P</i><0.05</span>). Network analysis revealed comprehensive co-occurrence relationships (positive correlation 82 % vs. negative correlation 18 %). The neutral community model revealed that neutral processes explained more than 55 % of the community variation. Stochastic processes (e.g. homogenizing dispersal and undominated processes) predominated in community assembly over the deterministic processes. These findings demonstrate the diversity of the microbial eukaryotic communities in the freshwater lakes of the Fildes Peninsula and have important implications for understanding the community assembly in these ecosystems.</p>https://bg.copernicus.org/articles/19/4639/2022/bg-19-4639-2022.pdf |
| spellingShingle | C. Zhang C. Zhang H. Li H. Li H. Li Y. Zeng Y. Zeng Y. Zeng H. Ding H. Ding H. Ding B. Wang Y. Li Z. Ji Y. Bi W. Luo W. Luo W. Luo Diversity and assembly processes of microbial eukaryotic communities in Fildes Peninsula Lakes (West Antarctica) Biogeosciences |
| title | Diversity and assembly processes of microbial eukaryotic communities in Fildes Peninsula Lakes (West Antarctica) |
| title_full | Diversity and assembly processes of microbial eukaryotic communities in Fildes Peninsula Lakes (West Antarctica) |
| title_fullStr | Diversity and assembly processes of microbial eukaryotic communities in Fildes Peninsula Lakes (West Antarctica) |
| title_full_unstemmed | Diversity and assembly processes of microbial eukaryotic communities in Fildes Peninsula Lakes (West Antarctica) |
| title_short | Diversity and assembly processes of microbial eukaryotic communities in Fildes Peninsula Lakes (West Antarctica) |
| title_sort | diversity and assembly processes of microbial eukaryotic communities in fildes peninsula lakes west antarctica |
| url | https://bg.copernicus.org/articles/19/4639/2022/bg-19-4639-2022.pdf |
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