NSF Org:	OCE Division Of Ocean Sciences
Recipient:	UNIVERSITY OF MAINE SYSTEM
Initial Amendment Date:	September 4, 2002
Latest Amendment Date:	September 4, 2002
Award Number:	0223383
Award Instrument:	Standard Grant
Program Manager:	Rodey Batiza OCE  Division Of Ocean Sciences GEO  Directorate for Geosciences
Start Date:	January 1, 2003
End Date:	December 31, 2006 (Estimated)
Total Intended Award Amount:	$294,000.00
Total Awarded Amount to Date:	$294,000.00
Funds Obligated to Date:	FY 2002 = $294,000.00
History of Investigator:	Lawrence Mayer (Principal Investigator) lmayer@maine.edu
Recipient Sponsored Research Office:	University of Maine 5717 CORBETT HALL ORONO ME  US  04469-5717 (207)581-1484
Sponsor Congressional District:	02
Primary Place of Performance:	University of Maine 5717 CORBETT HALL ORONO ME  US  04469-5717
Primary Place of Performance Congressional District:	02
Unique Entity Identifier (UEI):	PB3AJE5ZEJ59
Parent UEI:
NSF Program(s):	Chemical Oceanography
Primary Program Source:	app-0102
Program Reference Code(s):	0000, 1389, 9150, EGCH
Program Element Code(s):	167000
Award Agency Code:	4900
Fund Agency Code:	4900
Assistance Listing Number(s):	47.050

ABSTRACT

The large annual flux of organic carbon from land to the ocean largely disappears in the sea. Reasons for this loss are not clear. Under this award, the PI will examine abiotic and biotic aspects of the lability to loss of riverine particulate organic matter. Work will focus on the Mississippi, as it demonstrates the clearest loss of particulate organic material of any North American river upon deposition in the ocean. Photochemical experiments will follow up on initial work showing significant dissolution of particulate organic matter subjected to solar levels of radiation. Interactions with metal cycling will be studied, as will a variety of other physicochemical variables. Biochemical lability will be explored via enzyme hydrolyses and bacterial incubations. Seasonal patterns will be examined, as will be the influence of deposition in freshwater environments.

Please report errors in award information by writing to: awardsearch@nsf.gov.