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

Published online by Cambridge University Press:  13 May 2004

I. Izaguirre ,
G. Mataloni ,
A. Vinocur  and
G. Tell
I. Izaguirre
Affiliation:
Depto. Cs. Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab.II, 1428 Buenos Aires, Argentina
G. Mataloni
Affiliation:
Depto. Cs. Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab.II, 1428 Buenos Aires, Argentina
A. Vinocur
Affiliation:
Depto. Cs. Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab.II, 1428 Buenos Aires, Argentina
G. Tell
Affiliation:
Depto. Cs. Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab.II, 1428 Buenos Aires, Argentina
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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 nutrients from nearby penguin rookeries on both 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.

Keywords

Antarcticalakesphytoplanktonecologynutrientsfloristics
Type
Papers—Life Sciences and Oceanography
Information
Antarctic Science , Volume 5 , Issue 2 , June 1993 , pp. 137 - 141
Copyright
© Antarctic Science Ltd 1993

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