Science Serving Maryland's Coasts

R/P-32

Community metabolism of Chesapeake Bay: An index of ecosystem trophic condition and potential oxygen depletion

Principal Investigator: 

W. Michael Kemp

Start/End Year: 

1992 to 1996

Institution: 

Horn Point Laboratory, University of Maryland Center for Environmental Science

Co-Principal investigator: 

Walter R. Boynton, Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science; Christopher J. Madden, Horn Point Laboratory, University of Maryland Center for Environmental Science

Description: 

The overall objective of this project is to apply our approach for estimating "trophic condition," and net ecosystem metabolism (NSM) to shallow areas of the Chesapeake Bay. Specific goals include: measure planktonic and benthic P and R along cross-bay depth gradients; relate NSM with O2 (% sat) and chl a within shallow and between channel stations and shoal areas; develop improved estimates of ecosystem NSM for the whole Bay; estimate the contribution of NSM in mesohaline shoals to inputs of particulate organics to subpycnocline waters in adjacent deeper areas; use this improved method for estimating NSM to deduce interannual patterns of NSM in the Bay and to relate these to changes in nutrient loading and hydrological conditions.

Related Publications: