Aquatic Sciences Meeting, Albuquerque 2001

PC16 Microbial Dynamics

Date: Thursday, February 15, 2001

Location: Southwest Hall

Gowing, M, M, Inst. Mar. Sci., Univ. Calif., Santa Cruz, CA 95064, USA, gowing@cats.ucsc.edu

Garrison, D, L, Inst. Mar. Sci., Univ. Calif., Santa Cruz, CA 95064, USA, dlgarris@cats.ucsc.edu

LARGE MICROZOOPLANKTON AND ALGAL CELLS IN THE ROSS SEA: ABUNDANCE AND FLUX

Larger (greater than 50 micrometers) protozoan and algal cells comprise much of the particle flux in the Ross Sea, yet assemblages of many of these organisms in the water column have not been characterized. The main reasons for this are their low abundances (fewer than one cell per liter up to tens of cells per liter) compared to those of smaller cells and their requirement of larger larger water volumes (ca. 60 liters) and gentle concentration for accurate sampling. We sampled these assemblages as part of the Ross Sea Bloom Study in December 1995-January 1996. We will compare the relationship of their distribution, abundance and biomass to their representation in the particle flux at stations dominated by diatoms vs. stations dominated by Phaeocystis antarctica.

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Aquatic Sciences Meeting, Albuquerque 2001

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