Distribution of Krill and Zooplankton on the Continental Shelf of Marguerite Bay, Antarctic Peninsula:
Preliminary Results from MOCNESS Samples

Gaelin Rosenwaks, Carin J. Ashjian, Cabell S. Davis, Scott M. Gallager, and Peter H. Wiebe

Department of Biology
Woods Hole Oceanographic Institution
Woods Hole, MA 02543

The Southern Ocean GLOBEC program seeks to describe how circulation and hydrography influence the distribution of krill on the shelf and how this contributes to successful overwintering by populations of krill in the region. The taxonomic and size composition of the zooplankton community and coincident hydrography were quantified using a 1-m2 MOCNESS during two cruises to Marguerite Bay, Antarctic Peninsula, in April-May (fall) and July-August (winter) 2001. Samples from tows conducted at three locations (northern shelf, Marguerite Bay, offshelf) have been analyzed for total displacement volume biomass and plankton taxonomic and size composition. Preliminary information from these tows will be presented.