Record Display for the EPA National Library Catalog


Main Title Shift in Photosynthetic Picoplankton Composition and Its Effect on Bivalve Mollusc Nutrition: The 1985 'Brown Tide' in Narragansett Bay, Rhode Island.
Author Tracey, G. A. ; Johnson, P. W. ; Steele, R. W. ; Hargraves, P. E. ; Sieurth, J. M. N. ;
CORP Author Science Applications International Corp., Narragansett, RI. ;Rhode Island Univ., Kingston. Graduate School of Oceanography.;Environmental Research Lab., Narragansett, RI.
Publisher c1988
Year Published 1988
Report Number EPA-68-03-3529; EPA/600/J-88/449 ; ERLN-869
Stock Number PB90-126640
Additional Subjects Mollusca ; Shellfish ; Water pollution ; Photosynthesis ; Plankton blooms ; Narragansett Bay ; Sampling ; Water analysis ; Toxicity ; Animal nutrition ; Rhode Island ; Growth ; Reprints ; Mytilus edulis ; Brown tide ; Particles
Library Call Number Additional Info Location Last
NTIS  PB90-126640 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 7p
An unprecedented algal bloom occurred as a 'brown tide' in Narragansett Bay, Rhode Island, during the summer of 1985. Water samples analyzed by epifluorescence and transmission electron microscopy revealed unusual changes in the composition of the picoplankton. Total bacterial numbers during peak bloom conditions were 10 to the 7th/ml- cells or 10-fold greater than usual for the summer coastal picoplankton. Experiments using mussels (Mytilus edulis) demonstrated reduced feeding on bloom algae, whereas optimal clearance rates were obtained with a similarly-sized strain of Synechococcus fed at comparable densities. These observations of normal and inhibited feeding on different components of the picoplankton suggest the species composition of the picoplankton may affect the nutrition and hence growth of this bivalve mollusc.