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Open AccessArticle

Landscape Setting Drives the Microbial Eukaryotic Community Structure in Four Swedish Mountain Lakes over the Holocene

1
Department of Ecology and Environmental Science, Umeå University, 90187 Umeå, Sweden
2
UMR CARRTEL, INRAE, Université Savoie Mont Blanc, 74200 Thonon les Bains, France
3
Department of Aquatic Sciences and Assessment, SLU, 75007 Uppsala, Sweden
*
Author to whom correspondence should be addressed.
Present address: Department of Chemistry, Umeå University, 90736 Umeå, Sweden.
These authors contributed equally to this work.
Academic Editor: Marco Coolen
Microorganisms 2021, 9(2), 355; https://doi.org/10.3390/microorganisms9020355
Received: 7 January 2021 / Revised: 3 February 2021 / Accepted: 8 February 2021 / Published: 11 February 2021
(This article belongs to the Special Issue Understanding Ancient Microbiomes)
On the annual and interannual scales, lake microbial communities are known to be heavily influenced by environmental conditions both in the lake and in its terrestrial surroundings. However, the influence of landscape setting and environmental change on shaping these communities over a longer (millennial) timescale is rarely studied. Here, we applied an 18S metabarcoding approach to DNA preserved in Holocene sediment records from two pairs of co-located Swedish mountain lakes. Our data revealed that the microbial eukaryotic communities were strongly influenced by catchment characteristics rather than location. More precisely, the microbial communities from the two bedrock lakes were largely dominated by unclassified Alveolata, while the peatland lakes showed a more diverse microbial community, with Ciliophora, Chlorophyta and Chytrids among the more predominant groups. Furthermore, for the two bedrock-dominated lakes—where the oldest DNA samples are dated to only a few hundred years after the lake formation—certain Alveolata, Chlorophytes, Stramenopiles and Rhizaria taxa were found prevalent throughout all the sediment profiles. Our work highlights the importance of species sorting due to landscape setting and the persistence of microbial eukaryotic diversity over millennial timescales in shaping modern lake microbial communities. View Full-Text
Keywords: sedimentary DNA; 18S metabarcoding; microbial eukaryotes; lakes; Holocene sedimentary DNA; 18S metabarcoding; microbial eukaryotes; lakes; Holocene
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MDPI and ACS Style

Capo, E.; Ninnes, S.; Domaizon, I.; Bertilsson, S.; Bigler, C.; Wang, X.-R.; Bindler, R.; Rydberg, J. Landscape Setting Drives the Microbial Eukaryotic Community Structure in Four Swedish Mountain Lakes over the Holocene. Microorganisms 2021, 9, 355. https://doi.org/10.3390/microorganisms9020355

AMA Style

Capo E, Ninnes S, Domaizon I, Bertilsson S, Bigler C, Wang X-R, Bindler R, Rydberg J. Landscape Setting Drives the Microbial Eukaryotic Community Structure in Four Swedish Mountain Lakes over the Holocene. Microorganisms. 2021; 9(2):355. https://doi.org/10.3390/microorganisms9020355

Chicago/Turabian Style

Capo, Eric; Ninnes, Sofia; Domaizon, Isabelle; Bertilsson, Stefan; Bigler, Christian; Wang, Xiao-Ru; Bindler, Richard; Rydberg, Johan. 2021. "Landscape Setting Drives the Microbial Eukaryotic Community Structure in Four Swedish Mountain Lakes over the Holocene" Microorganisms 9, no. 2: 355. https://doi.org/10.3390/microorganisms9020355

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