There are distinct differences in the geographical distribution of snowalgae over the Northern and Southern hemispheres. The list given by Kol(1968) shows that of 86 cryophiles, 80 were found in the Northern hemisphere.22 in the Southern one. and 18 species were common to both hemispheres.Chlandomonas myvalis, one of the most common snow algae, occurs only inthe Northern Hemisphere, while in Antarctica, the red cryoseston consistschiefly of Chlamydomonas antarcticus.
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