Nowadays at least 140 Red Data books or lists are used in Russia. They reflect threatened species of various subdivisions of Russia in addition to all-Russian Red Data book. None of them uses criteria for the species assessment of the modern version of the IUCN list. Non-threatened species had not been included in the Russian red books. Most of species listed in the all-Russian Red Data book (77 %) has not yet been assessed for the IUCN red list. These particularities indicate on the necessity of gap-analysis in the planning of the following work on the IUCN red list keeping. It should focus first of all on revealing of the most urgent objectives, but not on the simple increase of species assessments. Now more than a half of species of "Тhe IUCN red list of threatened species" are not threatened ones, that is why its title does not reflect its contents.
The biodiversity of algae of anthropogenically and technogenically disturbed terrestrial biotopes at the Bellingshausen Station of King George Island has been revealed. Fifty-three species of algae from five divisions were detected. Representatives of the cyanobacteria division dominated in the biotope studied. Almost all species belong to benthic forms, which corresponds well with the nature and origin of the biotopes. Differences in the composition of algocoenoses which developed on ornithogenic, mineral or anthropogenically polluted substrates were noted and characterized. The features of participation of different morphological types of algae in the process of organic mat formation have been emphasized. The biotopes of polar station surroundings were characterized by the dominance of cyanobacteria. Endemic species were not found.
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