Periphyton flora of some lotic and lentic environments of Hope Bay (Antarctic Peninsula)

A taxonomic study was made of the periphytic algal flora of some freshwater environments at Hope Bay, Antarctic Peninsula (63°27′S; 56°59′W), during summer 1992-1993. Seven lakes and two pools that are characterized by different trophic levels were studied. The largest, Boeckella Lake, has an import...

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Bibliographic Details
Main Authors: Vinocur, Alicia Liliana, Pizarro, Haydee Norma
Language:unknown
Published: 1995
Subjects:
lentic ecosystem
lotic ecosystem
periphyton
Antarctica
Antarctic Peninsula
Hope Bay
Boeckella Lake
Prasiola Stream
Bacillariophyceae
Chlorophyceae
Chrysococcus rufescens
Chrysophyceae
Cyanophyceae
Hydrurus foetidus
Lyngbya lagerheimii
Phormidium fragile
Prasiola crispa
Tribophyceae
Zygophyceae
Antarctic
Argentina
Boeckella
The Antarctic
Antarc*
Online Access:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07224060_v15_n6_p401_Vinocur
https://hdl.handle.net/20.500.12110/paper_07224060_v15_n6_p401_Vinocur
Description
Summary:A taxonomic study was made of the periphytic algal flora of some freshwater environments at Hope Bay, Antarctic Peninsula (63°27′S; 56°59′W), during summer 1992-1993. Seven lakes and two pools that are characterized by different trophic levels were studied. The largest, Boeckella Lake, has an important outflow (Prasiola Stream) that was also analyzed. Ninety-seven algal taxa, including specific and infraspecific entities, are recorded. Thirty-one new records for the Antarctic continent are described and illustrated. The flora comprises 44.4% Cyanophyceae, 21.6% Bacillariophyceae, 18.5% Chlorophyceae, 9.3% Tribophyceae, 4.2% Chrysophyceae and 2% Zygophyceae. The epilithic flora of Hope Bay shows a high species richness. Phormidiumfragile and Lyngbya lagerheimii were the most abundant species among the Cyanophyceae. In the algal mats we also found Chrysophyceae (mainly Hydrurus foetidus and Chrysococcus rufescens) and the macroscopic chlorophycean Prasiola crispa. Tribonema australis sp. nov. (Tribonematales, Tribophyceae) is put forward as a new species. Hormidium fluitans (Gay) Heering is renamed Klebshormidium fluitans. © 1995 Springer-Verlag. Fil:Vinocur, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pizarro, H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.

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