A balanced nitrogen budget of the surface layer of the southern Ross Sea, Antarctica
To understand marine biogeochemical cycles, it is critical to quantitatively balance organic matter transformations within the euphotic zone. Such an assessment for nitrogen is difficult because of lateral advection, uncertainties in individual measurements, the complexity of elemental transformatio...
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ftwilliammarycol:oai:scholarworks.wm.edu:vimsarticles-2419 2023-06-11T04:03:58+02:00 A balanced nitrogen budget of the surface layer of the southern Ross Sea, Antarctica Smith, Walker O., Jr. 2000-09-01T07:00:00Z application/pdf https://scholarworks.wm.edu/vimsarticles/1406 doi: 10.1029/1999GL011034 https://scholarworks.wm.edu/context/vimsarticles/article/2419/viewcontent/Smith_et_al_2000_Geophysical_Research_Letters.pdf unknown W&M ScholarWorks https://scholarworks.wm.edu/vimsarticles/1406 doi: 10.1029/1999GL011034 https://scholarworks.wm.edu/context/vimsarticles/article/2419/viewcontent/Smith_et_al_2000_Geophysical_Research_Letters.pdf VIMS Articles organic carbon export flux polynya Physical Sciences Peer-Reviewed Articles Oceanography text 2000 ftwilliammarycol https://doi.org/10.1029/1999GL011034 2023-05-04T17:44:32Z To understand marine biogeochemical cycles, it is critical to quantitatively balance organic matter transformations within the euphotic zone. Such an assessment for nitrogen is difficult because of lateral advection, uncertainties in individual measurements, the complexity of elemental transformations (including nitrification and denitrification), and the difficulty of collecting data on appropriate space and time scales. Two cruises were conducted to the southern Ross Sea, Antarctica, to understand the time-varying fluxes of nitrogen into its various pools. From these data a balanced inventory was constructed. Nitrate removal in the upper 200 m was balanced by particulate and dissolved organic nitrogen production, ammonification, and vertical flux. In austral spring nearly all (92%) of the new production remained as particulate nitrogen, but this percentage decreased markedly (52%) by mid-summer, when nitrogen regeneration, PN flux, and DON production were 23, 13 and 12% of net production, respectively. The organic matter budget in this coastal Antarctic site is dominated by particle transformations. Text Antarc* Antarctic Antarctica Ross Sea W&M ScholarWorks Antarctic Austral Ross Sea Geophysical Research Letters 27 17 2721 2724 |
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ftwilliammarycol |
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organic carbon export flux polynya Physical Sciences Peer-Reviewed Articles Oceanography |
spellingShingle |
organic carbon export flux polynya Physical Sciences Peer-Reviewed Articles Oceanography Smith, Walker O., Jr. A balanced nitrogen budget of the surface layer of the southern Ross Sea, Antarctica |
topic_facet |
organic carbon export flux polynya Physical Sciences Peer-Reviewed Articles Oceanography |
description |
To understand marine biogeochemical cycles, it is critical to quantitatively balance organic matter transformations within the euphotic zone. Such an assessment for nitrogen is difficult because of lateral advection, uncertainties in individual measurements, the complexity of elemental transformations (including nitrification and denitrification), and the difficulty of collecting data on appropriate space and time scales. Two cruises were conducted to the southern Ross Sea, Antarctica, to understand the time-varying fluxes of nitrogen into its various pools. From these data a balanced inventory was constructed. Nitrate removal in the upper 200 m was balanced by particulate and dissolved organic nitrogen production, ammonification, and vertical flux. In austral spring nearly all (92%) of the new production remained as particulate nitrogen, but this percentage decreased markedly (52%) by mid-summer, when nitrogen regeneration, PN flux, and DON production were 23, 13 and 12% of net production, respectively. The organic matter budget in this coastal Antarctic site is dominated by particle transformations. |
format |
Text |
author |
Smith, Walker O., Jr. |
author_facet |
Smith, Walker O., Jr. |
author_sort |
Smith, Walker O., Jr. |
title |
A balanced nitrogen budget of the surface layer of the southern Ross Sea, Antarctica |
title_short |
A balanced nitrogen budget of the surface layer of the southern Ross Sea, Antarctica |
title_full |
A balanced nitrogen budget of the surface layer of the southern Ross Sea, Antarctica |
title_fullStr |
A balanced nitrogen budget of the surface layer of the southern Ross Sea, Antarctica |
title_full_unstemmed |
A balanced nitrogen budget of the surface layer of the southern Ross Sea, Antarctica |
title_sort |
balanced nitrogen budget of the surface layer of the southern ross sea, antarctica |
publisher |
W&M ScholarWorks |
publishDate |
2000 |
url |
https://scholarworks.wm.edu/vimsarticles/1406 https://scholarworks.wm.edu/context/vimsarticles/article/2419/viewcontent/Smith_et_al_2000_Geophysical_Research_Letters.pdf |
geographic |
Antarctic Austral Ross Sea |
geographic_facet |
Antarctic Austral Ross Sea |
genre |
Antarc* Antarctic Antarctica Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea |
op_source |
VIMS Articles |
op_relation |
https://scholarworks.wm.edu/vimsarticles/1406 doi: 10.1029/1999GL011034 https://scholarworks.wm.edu/context/vimsarticles/article/2419/viewcontent/Smith_et_al_2000_Geophysical_Research_Letters.pdf |
op_doi |
https://doi.org/10.1029/1999GL011034 |
container_title |
Geophysical Research Letters |
container_volume |
27 |
container_issue |
17 |
container_start_page |
2721 |
op_container_end_page |
2724 |
_version_ |
1768384752246587392 |