Additional Participants

Graduate Student

Rota Wagai

Technician, Programmer

Linda Schick
Kathy Hardy

Other Collaborators or Contacts

Mead Allison
San Bentley

Project Period

January 1, 2003-December 31, 2006

Level of Access

Open-Access Report

Grant Number


Submission Date



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.

Included in

Oceanography Commons