Microbial diversity in Cenozoic sediments recovered from the Lomonosov Ridge in the Central Arctic Basin
Summary: The current understanding of microbes inhabiting deeply buried marine sediments is based largely on samples collected from continental shelves in tropical and temperate latitudes. The geographical range of marine subsurface coring was expanded during the Integrated Ocean Drilling Program Ar...
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ftunivrhodeislan:oai:digitalcommons.uri.edu:php_facpubs-2034 2024-09-15T17:52:15+00:00 Microbial diversity in Cenozoic sediments recovered from the Lomonosov Ridge in the Central Arctic Basin Forschner, Stephanie R. Sheffer, Rowley, David C. Smith, David C. 2009-03-01T08:00:00Z https://digitalcommons.uri.edu/php_facpubs/1031 https://doi.org/10.1111/j.1462-2920.2008.01834.x unknown DigitalCommons@URI https://digitalcommons.uri.edu/php_facpubs/1031 doi:10.1111/j.1462-2920.2008.01834.x https://doi.org/10.1111/j.1462-2920.2008.01834.x Pharmacy Practice and Clinical Research Faculty Publications text 2009 ftunivrhodeislan https://doi.org/10.1111/j.1462-2920.2008.01834.x 2024-08-21T00:09:34Z Summary: The current understanding of microbes inhabiting deeply buried marine sediments is based largely on samples collected from continental shelves in tropical and temperate latitudes. The geographical range of marine subsurface coring was expanded during the Integrated Ocean Drilling Program Arctic Coring Expedition (IODP ACEX). This expedition to the ice-covered central Arctic Ocean successfully cored the entire 428 m sediment stack on the Lomonosov Ridge during August and September 2004. The recovered cores vary from siliciclastic sediment low in organic carbon (< 0.2%) to organic rich (∼3%) black sediments that rapidly accumulated in the early middle Eocene. Three geochemical environments were characterized based on chemical analyses of porewater: an upper ammonium oxidation zone, a carbonate dissolution zone and a deep (> 200 m below sea floor) sulfate reduction zone. The diversity of microbes within each zone was assessed using 16S rRNA phylogenetic markers. Bacterial 16S rRNA genes were successfully amplified from each of the biogeochemical zones, while archaea was only amplified from the deep sulfate reduction zone. The microbial communities at each zone are phylogenetically different and are most closely related to those from other deep subsurface environments. © 2008 Society for Applied Microbiology and Blackwell Publishing Ltd. Text Arctic Basin Arctic Ocean Lomonosov Ridge University of Rhode Island: DigitalCommons@URI Environmental Microbiology 11 3 630 639 |
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University of Rhode Island: DigitalCommons@URI |
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ftunivrhodeislan |
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description |
Summary: The current understanding of microbes inhabiting deeply buried marine sediments is based largely on samples collected from continental shelves in tropical and temperate latitudes. The geographical range of marine subsurface coring was expanded during the Integrated Ocean Drilling Program Arctic Coring Expedition (IODP ACEX). This expedition to the ice-covered central Arctic Ocean successfully cored the entire 428 m sediment stack on the Lomonosov Ridge during August and September 2004. The recovered cores vary from siliciclastic sediment low in organic carbon (< 0.2%) to organic rich (∼3%) black sediments that rapidly accumulated in the early middle Eocene. Three geochemical environments were characterized based on chemical analyses of porewater: an upper ammonium oxidation zone, a carbonate dissolution zone and a deep (> 200 m below sea floor) sulfate reduction zone. The diversity of microbes within each zone was assessed using 16S rRNA phylogenetic markers. Bacterial 16S rRNA genes were successfully amplified from each of the biogeochemical zones, while archaea was only amplified from the deep sulfate reduction zone. The microbial communities at each zone are phylogenetically different and are most closely related to those from other deep subsurface environments. © 2008 Society for Applied Microbiology and Blackwell Publishing Ltd. |
format |
Text |
author |
Forschner, Stephanie R. Sheffer, Rowley, David C. Smith, David C. |
spellingShingle |
Forschner, Stephanie R. Sheffer, Rowley, David C. Smith, David C. Microbial diversity in Cenozoic sediments recovered from the Lomonosov Ridge in the Central Arctic Basin |
author_facet |
Forschner, Stephanie R. Sheffer, Rowley, David C. Smith, David C. |
author_sort |
Forschner, Stephanie R. |
title |
Microbial diversity in Cenozoic sediments recovered from the Lomonosov Ridge in the Central Arctic Basin |
title_short |
Microbial diversity in Cenozoic sediments recovered from the Lomonosov Ridge in the Central Arctic Basin |
title_full |
Microbial diversity in Cenozoic sediments recovered from the Lomonosov Ridge in the Central Arctic Basin |
title_fullStr |
Microbial diversity in Cenozoic sediments recovered from the Lomonosov Ridge in the Central Arctic Basin |
title_full_unstemmed |
Microbial diversity in Cenozoic sediments recovered from the Lomonosov Ridge in the Central Arctic Basin |
title_sort |
microbial diversity in cenozoic sediments recovered from the lomonosov ridge in the central arctic basin |
publisher |
DigitalCommons@URI |
publishDate |
2009 |
url |
https://digitalcommons.uri.edu/php_facpubs/1031 https://doi.org/10.1111/j.1462-2920.2008.01834.x |
genre |
Arctic Basin Arctic Ocean Lomonosov Ridge |
genre_facet |
Arctic Basin Arctic Ocean Lomonosov Ridge |
op_source |
Pharmacy Practice and Clinical Research Faculty Publications |
op_relation |
https://digitalcommons.uri.edu/php_facpubs/1031 doi:10.1111/j.1462-2920.2008.01834.x https://doi.org/10.1111/j.1462-2920.2008.01834.x |
op_doi |
https://doi.org/10.1111/j.1462-2920.2008.01834.x |
container_title |
Environmental Microbiology |
container_volume |
11 |
container_issue |
3 |
container_start_page |
630 |
op_container_end_page |
639 |
_version_ |
1810294313137995776 |