Temporal and Spatial Variations of Phytoplankton from Boeckella Lake (Hope Bay, Antarctic peninsula)

• Main Authors: Izaguirre, I., Mataloni, G., Vinocur, A., Tell, G.
• Format: Journal/Newspaper
• Language: unknown
• Subjects: Antarctica; ecology; floristics; lakes; nutrients; phytoplankton; penguin rookery; phosphorus; Antarctic Peninsula; Hope Bay; Boeckella Lake; Chlorophyceae; Chrysophyceae; Cyanophyceae; Ochromonas ovalis; Antarc*; Antarctic
• Online Access: https://hdl.handle.net/20.500.12110/paper_09541020_v5_n2_p137_Izaguirre

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. © 1993, Antarctic Science Ltd. All rights reserved. Fil:Izaguirre, I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mataloni, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vinocur, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.