RESEARCH ARTICLE
Continental-Scale α- and β-Diversity Patterns of Terrestrial Eukaryotic Microbes: Effect of Climate and Microhabitat on Testate Amoeba Assemblages in Eurasian Peatlands
Jiahui Su,
Yuri A. Mazei,
Andrey N. Tsyganov,
Natalia G. Mazei,
Victor A. Chernyshov, Alexander A. Komarov, Kirill V. Babeshko,
Edward A. D. Mitchell,
Satoshi Shimano, Damir A. Saldaev,
Basil N. Yakimov,
Jiahui Su
Shenzhen MSU-BIT University, Shenzhen, China
Lomonosov Moscow State University, Moscow, Russia
Search for more papers by this authorYuri A. Mazei
Shenzhen MSU-BIT University, Shenzhen, China
Lomonosov Moscow State University, Moscow, Russia
A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia
Search for more papers by this authorAndrey N. Tsyganov
Lomonosov Moscow State University, Moscow, Russia
Search for more papers by this authorNatalia G. Mazei
Lomonosov Moscow State University, Moscow, Russia
Search for more papers by this authorKirill V. Babeshko
Shenzhen MSU-BIT University, Shenzhen, China
Lomonosov Moscow State University, Moscow, Russia
Search for more papers by this authorEdward A. D. Mitchell
University of Neuchâtel, Neuchâtel, Switzerland
Search for more papers by this authorDamir A. Saldaev
Shenzhen MSU-BIT University, Shenzhen, China
Lomonosov Moscow State University, Moscow, Russia
Search for more papers by this authorCorresponding Author
Basil N. Yakimov
Shenzhen MSU-BIT University, Shenzhen, China
Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
Correspondence:
Basil N. Yakimov ([email protected])
Search for more papers by this authorJiahui Su,
Yuri A. Mazei,
Andrey N. Tsyganov,
Natalia G. Mazei,
Victor A. Chernyshov, Alexander A. Komarov, Kirill V. Babeshko,
Edward A. D. Mitchell,
Satoshi Shimano, Damir A. Saldaev,
Basil N. Yakimov,
Jiahui Su
Shenzhen MSU-BIT University, Shenzhen, China
Lomonosov Moscow State University, Moscow, Russia
Search for more papers by this authorYuri A. Mazei
Shenzhen MSU-BIT University, Shenzhen, China
Lomonosov Moscow State University, Moscow, Russia
A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia
Search for more papers by this authorAndrey N. Tsyganov
Lomonosov Moscow State University, Moscow, Russia
Search for more papers by this authorNatalia G. Mazei
Lomonosov Moscow State University, Moscow, Russia
Search for more papers by this authorKirill V. Babeshko
Shenzhen MSU-BIT University, Shenzhen, China
Lomonosov Moscow State University, Moscow, Russia
Search for more papers by this authorEdward A. D. Mitchell
University of Neuchâtel, Neuchâtel, Switzerland
Search for more papers by this authorDamir A. Saldaev
Shenzhen MSU-BIT University, Shenzhen, China
Lomonosov Moscow State University, Moscow, Russia
Search for more papers by this authorCorresponding Author
Basil N. Yakimov
Shenzhen MSU-BIT University, Shenzhen, China
Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
Correspondence:
Basil N. Yakimov ([email protected])
Search for more papers by this authorFirst published: 13 January 2025
Funding: This work was supported by the Russian Science Foundation.
ABSTRACT
Aim
The role of environmental factors that shape the large-scale distribution of eukaryotic microbes remains understudied. We aimed to disentangle the impacts of latitudinal and longitudinal gradients on the distribution of Sphagnum-dwelling testate amoebae in mires and to understand the influence of environmental factors related to both local habitats (hummock—lawn—hollows) and regional climates.
Location
A range from temperate to subarctic and from the European part to the Far East of Russia (51°–70°N, 32°–158°E).
Taxon
Testate amoeba (Arcellinida, Euglyphida, and Amphitremida).
Methods
We analysed the testate amoeba (TA) composition and abundance data from 816 samples collected in 75 peatlands. Linear mixed-effects models and redundancy analysis were applied to determine the likely environmental drivers of TA α- and β-diversity.
Results
We identified a significant reversed latitudinal gradient in α-diversity which negatively correlated with the mean annual temperature. This gradient is microhabitat-specific, being prominent in lawn and hollow microhabitats, but not in hummocks. Longitude, which corresponds mainly to a gradient of precipitation seasonality, was a significant predictor of TA β-diversity, especially in hollows.
Main Conclusions
Our findings identify climatic factors (e.g., mean annual temperature and precipitation seasonality) as likely shaping the continental-scale TA α- and β-diversity patterns, emphasising the microhabitat-specific nature of these relationships. The absence of pattern in hummocks is interpreted as evidence for a predominant microhabitat stress (i.e., low moisture and pH) in this habitat.
Conflicts of Interest
The authors declare no conflicts of interest.
Open Research
Data Availability Statement
The data that support the findings of this study are openly available in Zenodo at https://doi.org/10.5281/zenodo.13149556.
Supporting Information
| Filename | Description |
|---|---|
| jbi15082-sup-0001-Supinfo.docxWord 2007 document , 2.8 MB |
Data S1. |
Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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