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

• 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

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.