Taxonomic and functional diversity of protists in saline and hypersaline lakes in southern Western Siberia, a region strongly affected by climate change
Climate change has had an unprecedented impact on lake ecosystems around the globe and has both direct and indirect consequences on lake structure and mineralization. These changes are threatening the unique biodiversity that lake ecosystems currently support. Siberia is experiencing one of the grea...
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KeAi Communications Co. Ltd.
2025-01-01
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| Series: | Water Biology and Security |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S277273512400088X |
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| author | Elena A. Gerasimova Alexander S. Balkin Vladimir Y. Kataev Ekaterina S. Filonchikova Yulia V. Mindolina Denis V. Tikhonenkov |
| author_facet | Elena A. Gerasimova Alexander S. Balkin Vladimir Y. Kataev Ekaterina S. Filonchikova Yulia V. Mindolina Denis V. Tikhonenkov |
| author_sort | Elena A. Gerasimova |
| collection | DOAJ |
| description | Climate change has had an unprecedented impact on lake ecosystems around the globe and has both direct and indirect consequences on lake structure and mineralization. These changes are threatening the unique biodiversity that lake ecosystems currently support. Siberia is experiencing one of the greatest impacts of climate change in the world, with exceptional warming in the north and increasing aridity in the south. Lakes in southern West Siberia, including saline and hypersaline waterbodies within endorheic basins, remain unexplored in terms of the biodiversity of the microbial eukaryotes inhabiting them. In this study, we investigated the taxonomic and functional diversity of planktonic protist communities in saline and hypersaline lakes (22–220‰) in southern Western Siberia through Illumina 18S rDNA amplicon sequencing. Taxonomic diversity was represented by the Amoebozoa, Archaeplastida, Cryptista, Excavata, Haptista, Obazoa, Provora, and TSAR supergroups, and varied significantly among lakes of different salinities. Salinity has been shown to be an important determinant that directly influences the composition and uniqueness of protist communities. The co-occurrence network analysis revealed a decrease in the complexity of the network of protist communities with increasing salinity. The taxonomic diversity of protists in lakes determines functional diversity, which is expressed as the relative abundance of free-living heterotrophs, phototrophs, and parasites. Phototrophs dominated the delta-hypersaline waters, and free-living heterotrophs dominated the alpha- and beta-hypersaline lakes. The parasite amplicon sequence variants (ASVs) were affiliated mainly with mixohaline and beta-hypersaline lakes. |
| format | Article |
| id | doaj-art-8b83ba413e2647a2a3eedff99e5e8560 |
| institution | Kabale University |
| issn | 2772-7351 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | KeAi Communications Co. Ltd. |
| record_format | Article |
| series | Water Biology and Security |
| spelling | doaj-art-8b83ba413e2647a2a3eedff99e5e85602025-01-27T04:22:41ZengKeAi Communications Co. Ltd.Water Biology and Security2772-73512025-01-0141100316Taxonomic and functional diversity of protists in saline and hypersaline lakes in southern Western Siberia, a region strongly affected by climate changeElena A. Gerasimova0Alexander S. Balkin1Vladimir Y. Kataev2Ekaterina S. Filonchikova3Yulia V. Mindolina4Denis V. Tikhonenkov5University of Tyumen, AquaBioSafe Laboratory, Tyumen, 625003, Russia; Corresponding author.Institute for Cellular and Intracellular Symbiosis of the Ural Branch, Russian Academy of Sciences, Orenburg, 460000, RussiaInstitute for Cellular and Intracellular Symbiosis of the Ural Branch, Russian Academy of Sciences, Orenburg, 460000, RussiaInstitute for Cellular and Intracellular Symbiosis of the Ural Branch, Russian Academy of Sciences, Orenburg, 460000, RussiaInstitute for Cellular and Intracellular Symbiosis of the Ural Branch, Russian Academy of Sciences, Orenburg, 460000, RussiaUniversity of Tyumen, AquaBioSafe Laboratory, Tyumen, 625003, Russia; Papanin Institute for Biology of Inland Waters Russian Academy of Sciences, Borok, 152742, Russia; Corresponding author. University of Tyumen, AquaBioSafe Laboratory, Tyumen, 625003, Russia.Climate change has had an unprecedented impact on lake ecosystems around the globe and has both direct and indirect consequences on lake structure and mineralization. These changes are threatening the unique biodiversity that lake ecosystems currently support. Siberia is experiencing one of the greatest impacts of climate change in the world, with exceptional warming in the north and increasing aridity in the south. Lakes in southern West Siberia, including saline and hypersaline waterbodies within endorheic basins, remain unexplored in terms of the biodiversity of the microbial eukaryotes inhabiting them. In this study, we investigated the taxonomic and functional diversity of planktonic protist communities in saline and hypersaline lakes (22–220‰) in southern Western Siberia through Illumina 18S rDNA amplicon sequencing. Taxonomic diversity was represented by the Amoebozoa, Archaeplastida, Cryptista, Excavata, Haptista, Obazoa, Provora, and TSAR supergroups, and varied significantly among lakes of different salinities. Salinity has been shown to be an important determinant that directly influences the composition and uniqueness of protist communities. The co-occurrence network analysis revealed a decrease in the complexity of the network of protist communities with increasing salinity. The taxonomic diversity of protists in lakes determines functional diversity, which is expressed as the relative abundance of free-living heterotrophs, phototrophs, and parasites. Phototrophs dominated the delta-hypersaline waters, and free-living heterotrophs dominated the alpha- and beta-hypersaline lakes. The parasite amplicon sequence variants (ASVs) were affiliated mainly with mixohaline and beta-hypersaline lakes.http://www.sciencedirect.com/science/article/pii/S277273512400088X18S rDNAProtistTaxonomic diversityFunctional diversitySaline lakeHypersaline lake |
| spellingShingle | Elena A. Gerasimova Alexander S. Balkin Vladimir Y. Kataev Ekaterina S. Filonchikova Yulia V. Mindolina Denis V. Tikhonenkov Taxonomic and functional diversity of protists in saline and hypersaline lakes in southern Western Siberia, a region strongly affected by climate change Water Biology and Security 18S rDNA Protist Taxonomic diversity Functional diversity Saline lake Hypersaline lake |
| title | Taxonomic and functional diversity of protists in saline and hypersaline lakes in southern Western Siberia, a region strongly affected by climate change |
| title_full | Taxonomic and functional diversity of protists in saline and hypersaline lakes in southern Western Siberia, a region strongly affected by climate change |
| title_fullStr | Taxonomic and functional diversity of protists in saline and hypersaline lakes in southern Western Siberia, a region strongly affected by climate change |
| title_full_unstemmed | Taxonomic and functional diversity of protists in saline and hypersaline lakes in southern Western Siberia, a region strongly affected by climate change |
| title_short | Taxonomic and functional diversity of protists in saline and hypersaline lakes in southern Western Siberia, a region strongly affected by climate change |
| title_sort | taxonomic and functional diversity of protists in saline and hypersaline lakes in southern western siberia a region strongly affected by climate change |
| topic | 18S rDNA Protist Taxonomic diversity Functional diversity Saline lake Hypersaline lake |
| url | http://www.sciencedirect.com/science/article/pii/S277273512400088X |
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