Accession Number:

ADA535310

Title:

Trace Metal and Nutrient Cycling in San Francisco Bay

Descriptive Note:

Annual rept.

Corporate Author:

MOSS LANDING MARINE LABS CA

Report Date:

1998-09-30

Pagination or Media Count:

6.0

Abstract:

The long term goals of this project are to examine the influence of metal flux primarily Cu, Cd, As, Co, Mn and Fe from sediments on the concentration of dissolved metals in the coastal zone and embayments. The processes that control trace metal exchange across the sediment-water interface within coastal environments regulate the concentration of dissolved, bioactive metals in the water column. These processes include variations in the relative influence of transport mechanisms diffusion versus bio-irrigation, microbial activity anaerobic versus aerobic respiration, as well as geochemical reactions redox reactions, precipitation, complexation and adsorption that regulate the behavior of dissolved metals in pore waters. All of these processes are controlled by the activity and composition of the sediment community. The role of organic carbon remineralization on trace metal mobility at a biologically active interface is, therefore, the focus of this study.

Subject Categories:

  • Biochemistry
  • Inorganic Chemistry
  • Physical and Dynamic Oceanography
  • Hydrology, Limnology and Potamology
  • Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE