Aquatic Sciences Meeting, Albuquerque 2001

PC02 Optical Studies in Aquatic Ecosystems

Date: Tuesday, February 13, 2001

Location: Southwest Hall

Urban-Rich, J, L, ECOS, University of Massachusetts Boston, Boston, USA, juanita.urban-rich@umb.edu

Wells, M, L, University of Maine, Orono, USA, mlwells@maine.edu

CHANGES IN CDOM COMPOSITION DURING A COPEPOD GRAZING EXPERIMENT IN THE GULF OF MEXICO

Experiments were conducted in the Gulf of Mexico along the Louisiana coast during June 2000, to examine the affect of copepod grazing on CDOM concentrations and composition. Copepods were placed into bottles filled with natural seawater and incubated on deck in running seawater incubators. CDOM composition was monitored using fluorescence over 28 h. In the experiments CDOM increased in the treatment bottles relative to control bottles without copepods. The most notable increase was in the protein-type fluorescence. Bacteria concentrations were monitored in the treatment and control bottles. These preliminary results will be discussed with regards to possible role of copepods in CDOM distribution and composition in coastal environments.

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Aquatic Sciences Meeting, Albuquerque 2001

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