Evidence for Circumpolar Distribution of Planktonic Archaea in the Southern Ocean
Surveys using rRNA-targeted probes specific for the 3 domains of life (Eucarya, Archaea, and Bacteria) indicated the presence, and at times high abundance, of archaeal rRNA in a variety of water masses surrounding Antarctica. Hybridization signals of archaeal rRNA contributed significantly to that o...
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ftwestwashington:oai:cedar.wwu.edu:biology_facpubs-1020 2023-05-15T13:57:40+02:00 Evidence for Circumpolar Distribution of Planktonic Archaea in the Southern Ocean Murray, Alison E. Wu, Ke Ying Moyer, Craig L. Karl, Dave M. DeLong, Edward F. 1999-08-20T07:00:00Z application/pdf https://cedar.wwu.edu/biology_facpubs/24 https://cedar.wwu.edu/cgi/viewcontent.cgi?article=1020&context=biology_facpubs English eng Western CEDAR https://cedar.wwu.edu/biology_facpubs/24 https://cedar.wwu.edu/cgi/viewcontent.cgi?article=1020&context=biology_facpubs Biology Faculty and Staff Publications planktonic archaea SSU rRNA hybridization Biology text 1999 ftwestwashington 2022-09-14T05:56:01Z Surveys using rRNA-targeted probes specific for the 3 domains of life (Eucarya, Archaea, and Bacteria) indicated the presence, and at times high abundance, of archaeal rRNA in a variety of water masses surrounding Antarctica. Hybridization signals of archaeal rRNA contributed significantly to that of total picoplankton rRNA both north and south of the Polar Front in Drake Passage. Late winter surface water populations collected around the South Shetland Islands also yielded relatively high archaeal rRNA hybridization signals, approaching 10% or greater of the total rRNA. Summer samples collected in the western region of the Antarctic Peninsula and at McMurdo Sound in the Ross Sea region of Antarctica yielded lower amounts of archaeal rRNA in the surface waters, and higher levels of archaeal rRNA at depth (150 to 500 m). The hybridization data were compared to biological, chemical, and hydrographic information when possible. In surface waters, archaeal rRNA and chlorophyll a varied inversely. The data presented here further supports the hypothesis that planktonic archaea are a common, widespread and likely ecologically important component of Antarctic picoplankton assemblages. The presence of these archaea in circumpolar deep water suggests a conduit for their circumpolar transport around Antarctica via the Antarctic Circumpolar Current, as well as their export to the deep sea, or to intermediate waters of the South Atlantic via mixing at the polar front. Text Antarc* Antarctic Antarctic Peninsula Antarctica Drake Passage McMurdo Sound Ross Sea South Shetland Islands Southern Ocean Western Washington University: CEDAR (Contributing to Education through Digital Access to Research) Antarctic Antarctic Peninsula Drake Passage McMurdo Sound Ross Sea South Shetland Islands Southern Ocean The Antarctic |
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collection |
Western Washington University: CEDAR (Contributing to Education through Digital Access to Research) |
op_collection_id |
ftwestwashington |
language |
English |
topic |
planktonic archaea SSU rRNA hybridization Biology |
spellingShingle |
planktonic archaea SSU rRNA hybridization Biology Murray, Alison E. Wu, Ke Ying Moyer, Craig L. Karl, Dave M. DeLong, Edward F. Evidence for Circumpolar Distribution of Planktonic Archaea in the Southern Ocean |
topic_facet |
planktonic archaea SSU rRNA hybridization Biology |
description |
Surveys using rRNA-targeted probes specific for the 3 domains of life (Eucarya, Archaea, and Bacteria) indicated the presence, and at times high abundance, of archaeal rRNA in a variety of water masses surrounding Antarctica. Hybridization signals of archaeal rRNA contributed significantly to that of total picoplankton rRNA both north and south of the Polar Front in Drake Passage. Late winter surface water populations collected around the South Shetland Islands also yielded relatively high archaeal rRNA hybridization signals, approaching 10% or greater of the total rRNA. Summer samples collected in the western region of the Antarctic Peninsula and at McMurdo Sound in the Ross Sea region of Antarctica yielded lower amounts of archaeal rRNA in the surface waters, and higher levels of archaeal rRNA at depth (150 to 500 m). The hybridization data were compared to biological, chemical, and hydrographic information when possible. In surface waters, archaeal rRNA and chlorophyll a varied inversely. The data presented here further supports the hypothesis that planktonic archaea are a common, widespread and likely ecologically important component of Antarctic picoplankton assemblages. The presence of these archaea in circumpolar deep water suggests a conduit for their circumpolar transport around Antarctica via the Antarctic Circumpolar Current, as well as their export to the deep sea, or to intermediate waters of the South Atlantic via mixing at the polar front. |
format |
Text |
author |
Murray, Alison E. Wu, Ke Ying Moyer, Craig L. Karl, Dave M. DeLong, Edward F. |
author_facet |
Murray, Alison E. Wu, Ke Ying Moyer, Craig L. Karl, Dave M. DeLong, Edward F. |
author_sort |
Murray, Alison E. |
title |
Evidence for Circumpolar Distribution of Planktonic Archaea in the Southern Ocean |
title_short |
Evidence for Circumpolar Distribution of Planktonic Archaea in the Southern Ocean |
title_full |
Evidence for Circumpolar Distribution of Planktonic Archaea in the Southern Ocean |
title_fullStr |
Evidence for Circumpolar Distribution of Planktonic Archaea in the Southern Ocean |
title_full_unstemmed |
Evidence for Circumpolar Distribution of Planktonic Archaea in the Southern Ocean |
title_sort |
evidence for circumpolar distribution of planktonic archaea in the southern ocean |
publisher |
Western CEDAR |
publishDate |
1999 |
url |
https://cedar.wwu.edu/biology_facpubs/24 https://cedar.wwu.edu/cgi/viewcontent.cgi?article=1020&context=biology_facpubs |
geographic |
Antarctic Antarctic Peninsula Drake Passage McMurdo Sound Ross Sea South Shetland Islands Southern Ocean The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Drake Passage McMurdo Sound Ross Sea South Shetland Islands Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Drake Passage McMurdo Sound Ross Sea South Shetland Islands Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Drake Passage McMurdo Sound Ross Sea South Shetland Islands Southern Ocean |
op_source |
Biology Faculty and Staff Publications |
op_relation |
https://cedar.wwu.edu/biology_facpubs/24 https://cedar.wwu.edu/cgi/viewcontent.cgi?article=1020&context=biology_facpubs |
_version_ |
1766265438099996672 |