NSF Org:	OPP Office of Polar Programs (OPP)
Recipient:	WOODS HOLE OCEANOGRAPHIC INSTITUTION
Initial Amendment Date:	September 18, 2007
Latest Amendment Date:	September 18, 2007
Award Number:	0742057
Award Instrument:	Standard Grant
Program Manager:	Roberta Marinelli OPP  Office of Polar Programs (OPP) GEO  Directorate for Geosciences
Start Date:	September 15, 2007
End Date:	August 31, 2008 (Estimated)
Total Intended Award Amount:	$74,950.00
Total Awarded Amount to Date:	$74,950.00
Funds Obligated to Date:	FY 2007 = $74,950.00
History of Investigator:	Scott Gallager (Principal Investigator) sgallager@whoi.edu Mark Dennett (Co-Principal Investigator)
Recipient Sponsored Research Office:	Woods Hole Oceanographic Institution 266 WOODS HOLE RD WOODS HOLE MA  US  02543-1535 (508)289-3542
Sponsor Congressional District:	09
Primary Place of Performance:	Woods Hole Oceanographic Institution 266 WOODS HOLE RD WOODS HOLE MA  US  02543-1535
Primary Place of Performance Congressional District:	09
Unique Entity Identifier (UEI):	GFKFBWG2TV98
Parent UEI:
NSF Program(s):	ANT Organisms & Ecosystems
Primary Program Source:	0100CYXXDB NSF RESEARCH & RELATED ACTIVIT
Program Reference Code(s):	5295, 5383, 9150, 9169, 9237, EGCH
Program Element Code(s):	511100
Award Agency Code:	4900
Fund Agency Code:	4900
Assistance Listing Number(s):	47.078

ABSTRACT

Abstract

The research will continue and extend the study in the Southern Ocean that was initiated during the Oden Southern Ocean 2006 expedition in collaboration with Swedish scientist Mellissa Chierici. We will quantify carbon flux through the food web in the marginal ice zone (MIZ) by measuring size fractionated primary and secondary production, grazing and carbon flux through nanoplankton (2-20 um), microplankton (20-200um), and mesoplankton (200-2000 um). Community structure, species abundance and size specific grazing rates will be quantified using a variety of techniques both underway and at ice stations along the MIZ. The proposed cruise track extends across the Drake Passage to the Western Antarctic Peninsula (WAP) with three station transects along a gradient from the open ocean through the marginal ice zone (MIZ) in the Bellinghausen and Amundsen Seas and into the Ross Sea Polynya. Ice stations along each transect will provide material to characterize production associated with annual ice. Underway measurements of primary and secondary production (chlorophyll, CDOM, microplankton, and mesoplankton) and hydrography (temperature, salinity, pH, DO, turbidity) will establish a baseline for future cruises and as support for other projects such as biogeochemical studies on carbon dioxide drawdown and trace metal work on primary production. The outcome of these measurements will be a description of nano to mesoplankton standing stocks, community structure, and carbon flux along the MIZ in the Bellinghausen and Amundsen Seas and the Ross Sea Polynya.

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