Temporal and spatial variations of phytoplankton from Boeckella Lake (Hope Bay, Antartic Peninsula)

IZAGUIRRE, I.; MATALONI, G.; VINOCUR, A.; TELL, G.

ANTARCTIC SCIENCE

CAMBRIDGE UNIV PRESS

Lugar: Cambridge; Año: 1993 vol. 5 p. 137 - 141

0954-1020

Abstract: The main water body at Hope Bay, Boeckella Lake, was sampled at four sites for phytoplankton during summer 1991 to assess the influence of nutrientsfromnearby penguin rookeries onboth phytoplankton density and composition. The site located at the base of the rookeries had total phosphorus values comparable to those reported from the most eutrophic Antarctic lakes. During the ice-free period most of the Chlorophyceae and Cyanophyceae recorded were concentrated at this site. Phytoplankton density increased strongly in the area opposite to the rookeries where ice began to form; an under-ice bloom of Ochromonas aff. ovalis (Chrysophyceae) was observed in this area.