Influence of geographic distance and local environmental factors in shaping small eukaryote community structure along a latitudinal gradient of lakes
Aquatic Sciences Meeting, Aquatic Sciences: Global And Regional Perspectives - North Meets South, 22-27 February 2015, Granada, Spain Small eukaryotes of pico and nanoplanktonic size (0.2-5 µm, hereafter named picoeukaryotes, Peuk) are responsible for numerous ecosystem functions and processes in mo...
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ftcsic:oai:digital.csic.es:10261/136241 2024-02-11T09:56:56+01:00 Influence of geographic distance and local environmental factors in shaping small eukaryote community structure along a latitudinal gradient of lakes Schiaffino, M. Romina Lara, Elena Balagué, Vanessa Izaguirre, Irina 2015-02-24 http://hdl.handle.net/10261/136241 unknown Association for the Sciences of Limnology and Oceanography http://www.sgmeet.com/aslo/granada2015/program.asp Sí 2015 Aquatic Sciences Meeting. Program Book: 98 (2015) http://hdl.handle.net/10261/136241 none póster de congreso http://purl.org/coar/resource_type/c_6670 2015 ftcsic 2024-01-16T10:17:10Z Aquatic Sciences Meeting, Aquatic Sciences: Global And Regional Perspectives - North Meets South, 22-27 February 2015, Granada, Spain Small eukaryotes of pico and nanoplanktonic size (0.2-5 µm, hereafter named picoeukaryotes, Peuk) are responsible for numerous ecosystem functions and processes in most aquatic ecosystems. However, despite their recognized importance, the factors governing their community structure and biogeographical patterns are still poorly understood. We studied the latitudinal variation of Peuk in 40 freshwater bodies from Argentinean Patagonia (45°S) to Maritime Antarctica (63°S), to find out factors that influence Peuk community composition (PeukCC). PeukCC was assessed by a 18S rRNA gene fingerprinting approach (denaturing gradient gel electrophoresis, DGGE). Diversity was also assessed for some of the water bodies with next-generation sequencing (HiSeq Illumina). The abundance of Peuk (both autotrophic and heterotrophic) decreased significantly towards higher latitudes and increased significantly with nutrient content. The number of dominant operational taxonomic units (OTUs) increased significantly with increasing trophic gradient. The regional dominant OTU number decreased faster than the local one toward higher latitudes. The partial canonical ordination analysis showed that not only local environmental factors, but also geographic distance exerted influence on PeukCC. Significant differences were found in PeukCC between Antarctic and Patagonian water bodies Peer Reviewed Still Image Antarc* Antarctic Antarctica Digital.CSIC (Spanish National Research Council) Antarctic Patagonia |
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Digital.CSIC (Spanish National Research Council) |
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Aquatic Sciences Meeting, Aquatic Sciences: Global And Regional Perspectives - North Meets South, 22-27 February 2015, Granada, Spain Small eukaryotes of pico and nanoplanktonic size (0.2-5 µm, hereafter named picoeukaryotes, Peuk) are responsible for numerous ecosystem functions and processes in most aquatic ecosystems. However, despite their recognized importance, the factors governing their community structure and biogeographical patterns are still poorly understood. We studied the latitudinal variation of Peuk in 40 freshwater bodies from Argentinean Patagonia (45°S) to Maritime Antarctica (63°S), to find out factors that influence Peuk community composition (PeukCC). PeukCC was assessed by a 18S rRNA gene fingerprinting approach (denaturing gradient gel electrophoresis, DGGE). Diversity was also assessed for some of the water bodies with next-generation sequencing (HiSeq Illumina). The abundance of Peuk (both autotrophic and heterotrophic) decreased significantly towards higher latitudes and increased significantly with nutrient content. The number of dominant operational taxonomic units (OTUs) increased significantly with increasing trophic gradient. The regional dominant OTU number decreased faster than the local one toward higher latitudes. The partial canonical ordination analysis showed that not only local environmental factors, but also geographic distance exerted influence on PeukCC. Significant differences were found in PeukCC between Antarctic and Patagonian water bodies Peer Reviewed |
format |
Still Image |
author |
Schiaffino, M. Romina Lara, Elena Balagué, Vanessa Izaguirre, Irina |
spellingShingle |
Schiaffino, M. Romina Lara, Elena Balagué, Vanessa Izaguirre, Irina Influence of geographic distance and local environmental factors in shaping small eukaryote community structure along a latitudinal gradient of lakes |
author_facet |
Schiaffino, M. Romina Lara, Elena Balagué, Vanessa Izaguirre, Irina |
author_sort |
Schiaffino, M. Romina |
title |
Influence of geographic distance and local environmental factors in shaping small eukaryote community structure along a latitudinal gradient of lakes |
title_short |
Influence of geographic distance and local environmental factors in shaping small eukaryote community structure along a latitudinal gradient of lakes |
title_full |
Influence of geographic distance and local environmental factors in shaping small eukaryote community structure along a latitudinal gradient of lakes |
title_fullStr |
Influence of geographic distance and local environmental factors in shaping small eukaryote community structure along a latitudinal gradient of lakes |
title_full_unstemmed |
Influence of geographic distance and local environmental factors in shaping small eukaryote community structure along a latitudinal gradient of lakes |
title_sort |
influence of geographic distance and local environmental factors in shaping small eukaryote community structure along a latitudinal gradient of lakes |
publisher |
Association for the Sciences of Limnology and Oceanography |
publishDate |
2015 |
url |
http://hdl.handle.net/10261/136241 |
geographic |
Antarctic Patagonia |
geographic_facet |
Antarctic Patagonia |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
http://www.sgmeet.com/aslo/granada2015/program.asp Sí 2015 Aquatic Sciences Meeting. Program Book: 98 (2015) http://hdl.handle.net/10261/136241 |
op_rights |
none |
_version_ |
1790607081330442240 |