Microbial eukaryote communities exhibit robust biogeographical patterns along a gradient of Patagonian and Antarctic lakes
Summary Microbial eukaryotes play important roles in aquatic ecosystem functioning. Unravelling their distribution patterns and biogeography provides important baseline information to infer the underlying mechanisms that regulate the biodiversity and complexity of ecosystems. We studied the distribu...
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crwiley:10.1111/1462-2920.13566 2024-10-13T14:03:11+00:00 Microbial eukaryote communities exhibit robust biogeographical patterns along a gradient of Patagonian and Antarctic lakes Schiaffino, M. Romina Lara, Enrique Fernández, Leonardo D. Balagué, Vanessa Singer, David Seppey, Christophe C. W. Massana, Ramon Izaguirre, Irina 2016 http://dx.doi.org/10.1111/1462-2920.13566 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1462-2920.13566 http://onlinelibrary.wiley.com/wol1/doi/10.1111/1462-2920.13566/fullpdf en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Environmental Microbiology volume 18, issue 12, page 5249-5264 ISSN 1462-2912 1462-2920 journal-article 2016 crwiley https://doi.org/10.1111/1462-2920.13566 2024-09-19T04:18:51Z Summary Microbial eukaryotes play important roles in aquatic ecosystem functioning. Unravelling their distribution patterns and biogeography provides important baseline information to infer the underlying mechanisms that regulate the biodiversity and complexity of ecosystems. We studied the distribution patterns and factors driving diversity gradients in microeukaryote communities (total, abundant, uncommon and rare community composition) along a latitudinal gradient of lakes distributed from Argentinean Patagonia to Maritime Antarctica using both denaturing gradient gel electrophoresis (DGGE) and high‐throughput sequencing (Illumina HiSeq). DGGE and abundant Illumina operational taxonomic units (OTUs) showed both decreasing richness with latitude and significant differences between Patagonian and Antarctic lakes communities. In contrast, total richness did not change significantly across the latitudinal gradient, although evenness and diversity indices were significantly higher in Patagonian lakes. Beta‐diversity was characterized by a high species turnover, influenced by both environmental and geographical descriptors, although this pattern faded in the rare community. Our results suggest the co‐existence of a ‘core biosphere’ containing reduced number of abundant/dominant OTUs on which classical ecological rules apply, together with a much larger seedbank of rare OTUs driven by stochastic and reduced dispersal processes. These findings shed new light on the biogeographical patterns and forces structuring inland microeukaryote composition across broad spatial scales. Article in Journal/Newspaper Antarc* Antarctic Antarctica Wiley Online Library Antarctic Patagonia Environmental Microbiology 18 12 5249 5264 |
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Wiley Online Library |
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crwiley |
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English |
description |
Summary Microbial eukaryotes play important roles in aquatic ecosystem functioning. Unravelling their distribution patterns and biogeography provides important baseline information to infer the underlying mechanisms that regulate the biodiversity and complexity of ecosystems. We studied the distribution patterns and factors driving diversity gradients in microeukaryote communities (total, abundant, uncommon and rare community composition) along a latitudinal gradient of lakes distributed from Argentinean Patagonia to Maritime Antarctica using both denaturing gradient gel electrophoresis (DGGE) and high‐throughput sequencing (Illumina HiSeq). DGGE and abundant Illumina operational taxonomic units (OTUs) showed both decreasing richness with latitude and significant differences between Patagonian and Antarctic lakes communities. In contrast, total richness did not change significantly across the latitudinal gradient, although evenness and diversity indices were significantly higher in Patagonian lakes. Beta‐diversity was characterized by a high species turnover, influenced by both environmental and geographical descriptors, although this pattern faded in the rare community. Our results suggest the co‐existence of a ‘core biosphere’ containing reduced number of abundant/dominant OTUs on which classical ecological rules apply, together with a much larger seedbank of rare OTUs driven by stochastic and reduced dispersal processes. These findings shed new light on the biogeographical patterns and forces structuring inland microeukaryote composition across broad spatial scales. |
format |
Article in Journal/Newspaper |
author |
Schiaffino, M. Romina Lara, Enrique Fernández, Leonardo D. Balagué, Vanessa Singer, David Seppey, Christophe C. W. Massana, Ramon Izaguirre, Irina |
spellingShingle |
Schiaffino, M. Romina Lara, Enrique Fernández, Leonardo D. Balagué, Vanessa Singer, David Seppey, Christophe C. W. Massana, Ramon Izaguirre, Irina Microbial eukaryote communities exhibit robust biogeographical patterns along a gradient of Patagonian and Antarctic lakes |
author_facet |
Schiaffino, M. Romina Lara, Enrique Fernández, Leonardo D. Balagué, Vanessa Singer, David Seppey, Christophe C. W. Massana, Ramon Izaguirre, Irina |
author_sort |
Schiaffino, M. Romina |
title |
Microbial eukaryote communities exhibit robust biogeographical patterns along a gradient of Patagonian and Antarctic lakes |
title_short |
Microbial eukaryote communities exhibit robust biogeographical patterns along a gradient of Patagonian and Antarctic lakes |
title_full |
Microbial eukaryote communities exhibit robust biogeographical patterns along a gradient of Patagonian and Antarctic lakes |
title_fullStr |
Microbial eukaryote communities exhibit robust biogeographical patterns along a gradient of Patagonian and Antarctic lakes |
title_full_unstemmed |
Microbial eukaryote communities exhibit robust biogeographical patterns along a gradient of Patagonian and Antarctic lakes |
title_sort |
microbial eukaryote communities exhibit robust biogeographical patterns along a gradient of patagonian and antarctic lakes |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1111/1462-2920.13566 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1462-2920.13566 http://onlinelibrary.wiley.com/wol1/doi/10.1111/1462-2920.13566/fullpdf |
geographic |
Antarctic Patagonia |
geographic_facet |
Antarctic Patagonia |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Environmental Microbiology volume 18, issue 12, page 5249-5264 ISSN 1462-2912 1462-2920 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/1462-2920.13566 |
container_title |
Environmental Microbiology |
container_volume |
18 |
container_issue |
12 |
container_start_page |
5249 |
op_container_end_page |
5264 |
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1812819613140910080 |