Antarctic Peninsula Bacterioplankton 16S rRNA gene surveys and metagenomes from Winter 2002 and Summer 2006.
Antarctic surface oceans are well-studied during summer when irradiance levels are high, sea ice is melting and primary productivity is at a maximum. Coincident with this timing, the bacterioplankton respond with significant increases in secondary productivity. Little is known about bacterioplankton...
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SCAR - Microbial Antarctic Resource System
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Online Access: | https://dx.doi.org/10.15468/m2o4ab http://www.gbif.org/dataset/2cc6227c-a416-4928-bd1f-8458741b8377 |
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ftdatacite:10.15468/m2o4ab 2023-05-15T13:45:37+02:00 Antarctic Peninsula Bacterioplankton 16S rRNA gene surveys and metagenomes from Winter 2002 and Summer 2006. Murray, Alison 2015 https://dx.doi.org/10.15468/m2o4ab http://www.gbif.org/dataset/2cc6227c-a416-4928-bd1f-8458741b8377 en eng SCAR - Microbial Antarctic Resource System https://dx.doi.org/10.1098/rstb.2006.1944 Creative Commons Attribution (CC-BY) 4.0 http://creativecommons.org/licenses/by/4.0/legalcode CC-BY METADATA dataset Dataset 2015 ftdatacite https://doi.org/10.15468/m2o4ab https://doi.org/10.1098/rstb.2006.1944 2021-11-05T12:55:41Z Antarctic surface oceans are well-studied during summer when irradiance levels are high, sea ice is melting and primary productivity is at a maximum. Coincident with this timing, the bacterioplankton respond with significant increases in secondary productivity. Little is known about bacterioplankton in winter when darkness and sea-ice cover inhibit photoautotrophic primary production. We report here an environmental genomic and small subunit ribosomal RNA (SSU rRNA) analysis of winter and summer Antarctic Peninsula coastal seawater bacterioplankton. Intense inter-seasonal differences were reflected through shifts in community composition and functional capacities encoded in winter and summer environmental genomes with significantly higher phylogenetic and functional diversity in winter. In general, inferred metabolisms of summer bacterioplankton were characterized by chemoheterotrophy, photoheterotrophy and aerobic anoxygenic photosynthesis while the winter community included the capacity for bacterial and archaeal chemolithoautotrophy. Chemolithoautotrophic pathways were dominant in winter and were similar to those recently reported in global‘dark ocean’ mesopelagic waters. If chemolithoautotrophy is widespread in the Southern Ocean in winter, this process may be a previously unaccounted carbon sink and may help account for the unexplained anomalies in surface inorganic nitrogen content. Dataset Antarc* Antarctic Antarctic Peninsula Sea ice Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Antarctic Southern Ocean Antarctic Peninsula |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
language |
English |
description |
Antarctic surface oceans are well-studied during summer when irradiance levels are high, sea ice is melting and primary productivity is at a maximum. Coincident with this timing, the bacterioplankton respond with significant increases in secondary productivity. Little is known about bacterioplankton in winter when darkness and sea-ice cover inhibit photoautotrophic primary production. We report here an environmental genomic and small subunit ribosomal RNA (SSU rRNA) analysis of winter and summer Antarctic Peninsula coastal seawater bacterioplankton. Intense inter-seasonal differences were reflected through shifts in community composition and functional capacities encoded in winter and summer environmental genomes with significantly higher phylogenetic and functional diversity in winter. In general, inferred metabolisms of summer bacterioplankton were characterized by chemoheterotrophy, photoheterotrophy and aerobic anoxygenic photosynthesis while the winter community included the capacity for bacterial and archaeal chemolithoautotrophy. Chemolithoautotrophic pathways were dominant in winter and were similar to those recently reported in global‘dark ocean’ mesopelagic waters. If chemolithoautotrophy is widespread in the Southern Ocean in winter, this process may be a previously unaccounted carbon sink and may help account for the unexplained anomalies in surface inorganic nitrogen content. |
format |
Dataset |
author |
Murray, Alison |
spellingShingle |
Murray, Alison Antarctic Peninsula Bacterioplankton 16S rRNA gene surveys and metagenomes from Winter 2002 and Summer 2006. |
author_facet |
Murray, Alison |
author_sort |
Murray, Alison |
title |
Antarctic Peninsula Bacterioplankton 16S rRNA gene surveys and metagenomes from Winter 2002 and Summer 2006. |
title_short |
Antarctic Peninsula Bacterioplankton 16S rRNA gene surveys and metagenomes from Winter 2002 and Summer 2006. |
title_full |
Antarctic Peninsula Bacterioplankton 16S rRNA gene surveys and metagenomes from Winter 2002 and Summer 2006. |
title_fullStr |
Antarctic Peninsula Bacterioplankton 16S rRNA gene surveys and metagenomes from Winter 2002 and Summer 2006. |
title_full_unstemmed |
Antarctic Peninsula Bacterioplankton 16S rRNA gene surveys and metagenomes from Winter 2002 and Summer 2006. |
title_sort |
antarctic peninsula bacterioplankton 16s rrna gene surveys and metagenomes from winter 2002 and summer 2006. |
publisher |
SCAR - Microbial Antarctic Resource System |
publishDate |
2015 |
url |
https://dx.doi.org/10.15468/m2o4ab http://www.gbif.org/dataset/2cc6227c-a416-4928-bd1f-8458741b8377 |
geographic |
Antarctic Southern Ocean Antarctic Peninsula |
geographic_facet |
Antarctic Southern Ocean Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Sea ice Southern Ocean |
op_relation |
https://dx.doi.org/10.1098/rstb.2006.1944 |
op_rights |
Creative Commons Attribution (CC-BY) 4.0 http://creativecommons.org/licenses/by/4.0/legalcode |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.15468/m2o4ab https://doi.org/10.1098/rstb.2006.1944 |
_version_ |
1766228526169587712 |