The microbial fate of carbon in high-latitude seas: Impact of the microbial loop on oceanic uptake of CO{sub 2}
This dissertation examines pelagic microbial processes in high-latitude seas, how they affect regional and global carbon cycling, and how they might respond to hypothesized changes in climate. Critical to these interests is the effect of cold temperature on bacterial activity. Also important is the...
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Washington Univ., School of Oceanography, Seattle, WA (United States)
1996
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ftunivnotexas:info:ark/67531/metadc708111 2023-05-15T15:12:04+02:00 The microbial fate of carbon in high-latitude seas: Impact of the microbial loop on oceanic uptake of CO{sub 2} Yager, Patricia L. United States. Department of Energy. Office of Energy Research. 1996-12-31 167 p. Text https://doi.org/10.2172/671868 https://digital.library.unt.edu/ark:/67531/metadc708111/ English eng Washington Univ., School of Oceanography, Seattle, WA (United States) other: DE97053630 rep-no: DOE/OR/00033--T753 grantno: AC05-76OR00033 doi:10.2172/671868 osti: 671868 https://digital.library.unt.edu/ark:/67531/metadc708111/ ark: ark:/67531/metadc708111 Other Information: TH: Thesis (Ph.D.) Climatic Change Carbon Sinks Carbon Dioxide Seas Latitude Effect Carbon Cycle Air-Water Interactions Experimental Data 54 Environmental Sciences Bacteria Report 1996 ftunivnotexas https://doi.org/10.2172/671868 2023-02-11T23:08:03Z This dissertation examines pelagic microbial processes in high-latitude seas, how they affect regional and global carbon cycling, and how they might respond to hypothesized changes in climate. Critical to these interests is the effect of cold temperature on bacterial activity. Also important is the extent to which marine biological processes in general impact the inorganic carbon cycle. The study area is the Northeast Water (NEW) Polynya, a seasonally-recurrent opening in the permanent ice situated over the northeastern Greenland continental shelf. This work was part of an international, multi-disciplinary research project studying carbon cycling in the coastal Arctic. The first chapter describes a simple model which links a complex marine food web to a simplified ocean and atmosphere. The second chapter investigates the inorganic carbon inventory of the summertime NEW Polynya surface waters to establish the effect of biological processes on the air-sea pCO{sub 2} gradient. The third and fourth chapters use a kinetic approach to examine microbial activities in the NEW Polynya as a function of temperature and dissolved organic substrate concentration, testing the so-called Pomeroy hypothesis that microbial activity is disproportionately reduced at low environmental temperatures owing to increased organic substrate requirements. Together, the suite of data collected on microbial activities, cell size, and grazing pressure suggest how unique survival strategies adopted by an active population of high-latitude bacteria may contribute to, rather than detract from, an efficient biological carbon pump. Report Arctic Greenland University of North Texas: UNT Digital Library Arctic Greenland |
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Open Polar |
collection |
University of North Texas: UNT Digital Library |
op_collection_id |
ftunivnotexas |
language |
English |
topic |
Climatic Change Carbon Sinks Carbon Dioxide Seas Latitude Effect Carbon Cycle Air-Water Interactions Experimental Data 54 Environmental Sciences Bacteria |
spellingShingle |
Climatic Change Carbon Sinks Carbon Dioxide Seas Latitude Effect Carbon Cycle Air-Water Interactions Experimental Data 54 Environmental Sciences Bacteria Yager, Patricia L. The microbial fate of carbon in high-latitude seas: Impact of the microbial loop on oceanic uptake of CO{sub 2} |
topic_facet |
Climatic Change Carbon Sinks Carbon Dioxide Seas Latitude Effect Carbon Cycle Air-Water Interactions Experimental Data 54 Environmental Sciences Bacteria |
description |
This dissertation examines pelagic microbial processes in high-latitude seas, how they affect regional and global carbon cycling, and how they might respond to hypothesized changes in climate. Critical to these interests is the effect of cold temperature on bacterial activity. Also important is the extent to which marine biological processes in general impact the inorganic carbon cycle. The study area is the Northeast Water (NEW) Polynya, a seasonally-recurrent opening in the permanent ice situated over the northeastern Greenland continental shelf. This work was part of an international, multi-disciplinary research project studying carbon cycling in the coastal Arctic. The first chapter describes a simple model which links a complex marine food web to a simplified ocean and atmosphere. The second chapter investigates the inorganic carbon inventory of the summertime NEW Polynya surface waters to establish the effect of biological processes on the air-sea pCO{sub 2} gradient. The third and fourth chapters use a kinetic approach to examine microbial activities in the NEW Polynya as a function of temperature and dissolved organic substrate concentration, testing the so-called Pomeroy hypothesis that microbial activity is disproportionately reduced at low environmental temperatures owing to increased organic substrate requirements. Together, the suite of data collected on microbial activities, cell size, and grazing pressure suggest how unique survival strategies adopted by an active population of high-latitude bacteria may contribute to, rather than detract from, an efficient biological carbon pump. |
author2 |
United States. Department of Energy. Office of Energy Research. |
format |
Report |
author |
Yager, Patricia L. |
author_facet |
Yager, Patricia L. |
author_sort |
Yager, Patricia L. |
title |
The microbial fate of carbon in high-latitude seas: Impact of the microbial loop on oceanic uptake of CO{sub 2} |
title_short |
The microbial fate of carbon in high-latitude seas: Impact of the microbial loop on oceanic uptake of CO{sub 2} |
title_full |
The microbial fate of carbon in high-latitude seas: Impact of the microbial loop on oceanic uptake of CO{sub 2} |
title_fullStr |
The microbial fate of carbon in high-latitude seas: Impact of the microbial loop on oceanic uptake of CO{sub 2} |
title_full_unstemmed |
The microbial fate of carbon in high-latitude seas: Impact of the microbial loop on oceanic uptake of CO{sub 2} |
title_sort |
microbial fate of carbon in high-latitude seas: impact of the microbial loop on oceanic uptake of co{sub 2} |
publisher |
Washington Univ., School of Oceanography, Seattle, WA (United States) |
publishDate |
1996 |
url |
https://doi.org/10.2172/671868 https://digital.library.unt.edu/ark:/67531/metadc708111/ |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland |
genre_facet |
Arctic Greenland |
op_source |
Other Information: TH: Thesis (Ph.D.) |
op_relation |
other: DE97053630 rep-no: DOE/OR/00033--T753 grantno: AC05-76OR00033 doi:10.2172/671868 osti: 671868 https://digital.library.unt.edu/ark:/67531/metadc708111/ ark: ark:/67531/metadc708111 |
op_doi |
https://doi.org/10.2172/671868 |
_version_ |
1766342808115871744 |