Planktonic protistan communities in lakes along a large-scale environmental gradient
13 pages, 5 figures, supplementary data https://dx.doi.org/10.1093/femsec/fiw231
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| Format: | artículo biblioteca |
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Federation of European Microbiological Societies
2017-04
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| Subjects: | Planktonic, Protists, Oligotrophic lakes, Diversity, Longitudinal gradient, 454 pyrosequencing, |
| Online Access: | http://hdl.handle.net/10261/148707 http://dx.doi.org/10.13039/501100005366 |
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dig-icm-es-10261-1487072020-01-03T02:13:16Z Planktonic protistan communities in lakes along a large-scale environmental gradient Khomich, Maryia Kauserud, Håvard Logares, Ramiro Rasconi, Serena Andersen, Tom University of Oslo Research Council of Norway Planktonic Protists Oligotrophic lakes Diversity Longitudinal gradient 454 pyrosequencing 13 pages, 5 figures, supplementary data https://dx.doi.org/10.1093/femsec/fiw231 Despite their obvious importance, our knowledge about the eukaryotic microbial diversity of inland waters is still limited and poorly documented. We applied 18S rDNA amplicon sequencing to provide a comprehensive analysis of eukaryotic diversity in 74 low-productivity lakes along a 750 km longitudinal transect (5.40-18.52°E) across southern Scandinavia. We detected a wide diversity of pelagic microbial eukaryotes, classified into 1882 operational taxonomic units (OTUs). The highest OTU richness was found in traditional phytoplankton groups like Dinoflagellata, Chrysophyceae, Chlorophyta and Cryptophyta. A total of 53.6% OTUs were primarily autotrophic, while 19.4% of the heterotrophic OTUs belonged to putative parasitic taxa. Except for a longitudinal trend in the relative influence of mixotrophs, there were no significant associations between major functional groups (autotrophs, heterotrophs and parasites) and spatial and environmental variables. Community dissimilarity increased significantly with increasing geographical distance between lakes. In accordance with earlier, microscopy-based surveys in this region, we demonstrate distinct gradients in protistan diversity and community composition, which are better explained by spatial structure than local environment. The strong association between longitude and protistan diversity is probably better explained by differences in regional species pools due to differences in landscape productivity than by dispersal limitation or climatic constraints This study has been supported financially by the Department of Biosciences, University of Oslo and by the Research Council of Norway (contract Miljø2015/196336 ‘Biodiversity, community saturation and ecosystem function in lakes’ (COMSAT)) Peer Reviewed 2017-04-24T06:04:21Z 2017-04-24T06:04:21Z 2017-04 2017-04-24T06:04:21Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1093/femsec/fiw231 issn: 0168-6496 e-issn: 1574-6941 FEMS Microbiology Ecology 93(4): fiw231 (2017) http://hdl.handle.net/10261/148707 10.1093/femsec/fiw231 http://dx.doi.org/10.13039/501100005366 https://dx.doi.org/10.1093/femsec/fiw231 Sí open Federation of European Microbiological Societies |
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Planktonic Protists Oligotrophic lakes Diversity Longitudinal gradient 454 pyrosequencing Planktonic Protists Oligotrophic lakes Diversity Longitudinal gradient 454 pyrosequencing |
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Planktonic Protists Oligotrophic lakes Diversity Longitudinal gradient 454 pyrosequencing Planktonic Protists Oligotrophic lakes Diversity Longitudinal gradient 454 pyrosequencing Khomich, Maryia Kauserud, Håvard Logares, Ramiro Rasconi, Serena Andersen, Tom Planktonic protistan communities in lakes along a large-scale environmental gradient |
| description |
13 pages, 5 figures, supplementary data https://dx.doi.org/10.1093/femsec/fiw231 |
| author2 |
University of Oslo |
| author_facet |
University of Oslo Khomich, Maryia Kauserud, Håvard Logares, Ramiro Rasconi, Serena Andersen, Tom |
| format |
artículo |
| topic_facet |
Planktonic Protists Oligotrophic lakes Diversity Longitudinal gradient 454 pyrosequencing |
| author |
Khomich, Maryia Kauserud, Håvard Logares, Ramiro Rasconi, Serena Andersen, Tom |
| author_sort |
Khomich, Maryia |
| title |
Planktonic protistan communities in lakes along a large-scale environmental gradient |
| title_short |
Planktonic protistan communities in lakes along a large-scale environmental gradient |
| title_full |
Planktonic protistan communities in lakes along a large-scale environmental gradient |
| title_fullStr |
Planktonic protistan communities in lakes along a large-scale environmental gradient |
| title_full_unstemmed |
Planktonic protistan communities in lakes along a large-scale environmental gradient |
| title_sort |
planktonic protistan communities in lakes along a large-scale environmental gradient |
| publisher |
Federation of European Microbiological Societies |
| publishDate |
2017-04 |
| url |
http://hdl.handle.net/10261/148707 http://dx.doi.org/10.13039/501100005366 |
| work_keys_str_mv |
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