English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/148707
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Planktonic protistan communities in lakes along a large-scale environmental gradient

AutorKhomich, Maryia; Kauserud, Håvard; Logares, Ramiro ; Rasconi, Serena; Andersen, Tom
Palabras clavePlanktonic
Oligotrophic lakes
Longitudinal gradient
454 pyrosequencing
Fecha de publicaciónabr-2017
EditorFederation of European Microbiological Societies
CitaciónFEMS Microbiology Ecology 93(4): fiw231 (2017)
ResumenDespite 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
Descripción13 pages, 5 figures, supplementary data https://dx.doi.org/10.1093/femsec/fiw231
Versión del editorhttps://dx.doi.org/10.1093/femsec/fiw231
Identificadoresdoi: 10.1093/femsec/fiw231
issn: 0168-6496
e-issn: 1574-6941
Aparece en las colecciones: (ICM) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo

Artículos relacionados:

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.