Bipolarity in the distribution of silica-scaled chrysophytes

• Main Author: Vigna, María Susana
• Language: unknown
• Published: 1996
• Subjects: biogeography; bipolar distributions; silica-scaled chrysophytes; Tierra del Fuego; Chrysophyceae; Antarctic; Argentina; Antarc*
• Online Access: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00188158_v336_n1-3_p121_Kristiansen; https://hdl.handle.net/20.500.12110/paper_00188158_v336_n1-3_p121_Kristiansen

An investigation of the chrysophyte flora of Tierra del Fuego (Argentina), 54-55 °S., has shown a high degree of similarity with the flora of climatically comparable regions on the northern hemisphere. All the Fuegian species (except two endemic to South America) also occur on the northern hemisphere - some are more or less cosmopolitan, others have pronounced bipolar distributions. Species in common with other Antarctic regions such as Tasmania are all cosmopolitan, and none of the interesting species originally described from Tasmania occur in Tierra del Fuego. Thus the Fuegian flora appears to be mainly climatically determined and a special Antarctic chrysophyte flora does not exist. Fil:Vigna, M.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.