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 National Science
Foundation Award #9116872 |
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Nitrogen Dynamics Within Two International Southern Ocean JGOFS Cruises |
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| Investigator(s): |
Walker Smith (PI)
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| Sponsor: |
University of Tennessee Knoxville, TN 37996 8659743466
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| Start Date/Expiration Date |
1992-06-15 to 1996-11-30 (amended 1994-06-29) |
| Awarded Amount to Date: |
$315,699 |
| Abstract: The Southern Ocean is recognized as a critical region with regard to its oceanic productivity and global carbon dioxide balance. The region is known to be elevated in nutrients year-round, but extreme temporal and spatial variability on all scales is observed in the productivity. This project will focus on nitrogen dynamics, with an emphasis on new production, that photosynthetic production or organic material based on nitrate as a nitrogen source. Environmental factors controlling new production appear to be different in the Antarctic compared to temperate seas. Experiments aim to determine the relationship between new production and various factors such as irradiance, heterotrophic use of reduced nitrogen compounds, and concentrations of urea and ammonia. The research will be conducted on two international, multidisciplinary cruises on British and French ships. The collaboration with international scientists provides an excellent opportunity to advance this field. |
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| NSF Org: |
OPP - Office of Polar Programs |
| Award Number: |
9116872 |
| Award Instrument: |
Continuing grant |
| Program Manager: |
Polly A. Penhale
OPP Office of Polar Programs
O/D OFFICE OF THE DIRECTOR
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| NSF Program(s): |
ANTARCTIC BIOLOGY & MEDICINE, ANTARCTIC OCEANS & CLIMATE SYS |
| Field Application(s): |
Biological Oceanography, Oceanography, Other Sciences NEC, Polar Programs-Related |
| Program Reference Code(s): |
BIODIVERSITY AND ECOSYSTEM DYNAMICS, 9169
ENVIRONMENT, ENVI
JOINT GLOBAL OCEAN FLUX STUDY, 1315
RES EXPER FOR UNDERGRAD-SUPPLT, 9251
UNASSIGNED, 0000 |
| Program Element Code(s): |
5111
ANTARCTIC OCEANS & CLIMATE SYS, 5113 |
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