||Simulation of a Storm Event in Marine Microcosms.
Oviatt, Candace A. ;
Hunt, Carlton D. ;
Vargo, Gabriel A. ;
Kopchynski, Kevin W. ;
||Rhode Island Univ., Kingston. Graduate School of Oceanography.;Environmental Research Lab., Narragansett, RI.
||EPA-R-807795; EPA-600/J-81-530 ; ERLN-X30
Water pollution ;
Suspended sediments ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
A storm of moderate intensity and lasting for 14 hours was simulated in three of the Marine Ecosystems Research Laboratory (MERL) microcosms by increasing the intensity of microcosm mixing. The simulation resuspended approximately 0.3 cm of sediment and increased suspended particulate loads by 2 orders of magnitude. Concurrently, the concentrations of metals and nutrients increased in the water column. Dissolved metals, but not dissolved nutrients, could have been derived from the pore waters of the resuspended sediment. More likely, remineralization on the benthos and in the water column combined with reduced photosynthesis account for the slight increase observed in nutrient concentrations.