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Research Spending & Results

Award Detail

Awardee:DUKE UNIVERSITY
Doing Business As Name:Duke University
PD/PI:
  • Richard T Barber
  • (252) 504-7578
  • rbarber@duke.edu
Award Date:06/17/1996
Estimated Total Award Amount: $ 332,138
Funds Obligated to Date: $ 332,138
  • FY 1996=$110,000
  • FY 1997=$110,000
  • FY 1998=$112,138
Start Date:06/15/1996
End Date:05/31/1999
Transaction Type:Grant
Agency:NSF
Awarding Agency Code:4900
Funding Agency Code:4900
CFDA Number:47.078
Primary Program Source:040100 NSF RESEARCH & RELATED ACTIVIT
Award Title or Description:Primary Production in the Southern Ocean
Federal Award ID Number:9531981
DUNS ID:044387793
Parent DUNS ID:044387793
Program:ANT Organisms & Ecosystems
Program Officer:
  • Polly A. Penhale
  • (703) 292-7420
  • ppenhale@nsf.gov

Awardee Location

Street:2200 W. Main St, Suite 710
City:Durham
State:NC
ZIP:27705-4010
County:Durham
Country:US
Awardee Cong. District:01

Primary Place of Performance

Organization Name:Duke University Marine Laboratory
Street:
City:Beaufort
State:NC
ZIP:28516
Country:US
Cong. District:03

Abstract at Time of Award

95-31981 BARBER This research project is part of the US Joint Global Ocean Flux Study (JGOFS) Southern Ocean Program aimed at (1) a better understanding of the fluxes of carbon, both organic and inorganic, in the Southern Ocean, (2) identifying the physical, ecological and biogeochemical factors and processes which regulate the magnitude and variability of these fluxes, and (3) placing these fluxes into the context of the contemporary global carbon cycle. The Joint Global Ocean Flux Study (JGOFS) has had three successful field efforts (North Atlantic, Equatorial Pacific, Arabian Sea), and the next major field effort will be in the Southern Ocean. The overall objectives of JGOFS are to quantify and understand processes controlling the time-varying fluxes of carbon and associated biogenic elements, and to predict the response of marine biogeochemical processes to climate change. The Southern Ocean is critical to the global carbon cycle, as judged by its size and the physical process which occur there (e.g., deep and intermediate water formation), but its present quantitative role is uncertain. In order to address the objectives of USJGOFS successfully, the measurement of primary production is required for all process cruises planned for the Southern Ocean Study. Three methods will be employed: in situ incubations, deck incubations, and the photosynthesis-irradiance response. The areas of study will be the continental shelf of the Ross Sea, and the Polar Front region to the north of the Ross Sea. The controls on photosynthesis will also be investigated. It is hypothesized that on the continental shelf, irradiance limitation is the major factor controlling phytoplankton productivity, whereas in the Polar Front region, the availability of iron limits phytoplankton growth and influences the size distribution of the populations. The productivity data in conjunction with hydrographic data, will form a large part of the Southern Ocean JGOFS database which bo th at-sea investigators and modelers will use to clarify the role of the Southern Ocean in the global carbon cycle.

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