Freshwater Algae from Skarvsnes, Near Syowa Station, Antarctica (Biology and Medical Science)

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This contribution is the result of the studies on the collections obtained by Dr. M. OHNO during the 16th Japanese Antarctic Research Expedition in 1975-76. The author determined 134 taxa of fresh and marine forms of algae, comprising 51 taxa of blue-green algae, 71 taxa of diatoms and 12 taxa of green algae. The characteristic feature of the algal flora of the Skarvsnes area, especially that in Lake Hunazoko, is the rich marine species of diatoms, while freshwater species of blue-green algae are abundant in the streams. Judging from this, the nature of the algal species from the lakes in the Skarvsnes area is characteristic of high content of salt, and those from the stream water is entirely of a freshwater nature. Many species of marine diatoms are found in the inland lakes; especially notable in Melosira (3 taxa), Coscinodiscus (8 taxa), Actinocyclus (2 taxa), Hyalodiscus (1 taxon) and Charotia (2 taxa) of centricous diatoms, and Cocconeis (1 taxon), Trachyneis (1 taxon) and Fragilariopsis (3 taxa) of pennaceous diatoms, while the species of blue-green algae belonging to the Oscillatoriaceae were found in the streams.
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