Annotation. Soil characteristics and microbial abundance of moss and coastal habitats of Livingston Island - Antarctica, Lipid composition and B-glucosidase production from Cryptococcus Vishniacci AL4, Keratinase production of thermophilic Actinomycetes species from Antarctica, Isolation and taxonomic study of Antarctic yeasts from Livingston Island for exopolysaccharide-producing, Biochemical characteristic of Antarctic Yeasts, Effect of Temperature and Sodium chloride on the biomass and fatty acids composition of Antarctic yeast strain sporobolomyces roseus AL8, Alkoloids from the Antarctic strain Microbispora Aerata Subsp, Nov. Imbas-11A isolation, separation and physico-chemical properties, One agarical fungus from Livingston Island, South Shetlands, Distribution of freshwater algae on Livingston Island, South Shetlands, Antarctica, Additional data and summarized check-list on the Rhizopods from Livingston Island, South Shetlands, Antarctic, Review on the free-living copepods from the region of the Bulgarian Antarctic Base, Heavy Metals and toxic elements content in Gentoo Penguins Feathers During Moult, Comparative Studies on the Contents of Chemical Elements in Soil Cover from Livingston Island, Antarctica.

The fourth volume of Bulgarian Antarctic Research summarises results of investigations carried out by Bulgarian and foreigh specialits on Livingston islands in 1995-2004. The volume contains papers on soil, microbial organisms, actynomicete fungi, Antarctic yeasts, agarical fuingi, freshwater algae, rhizopods, copepods and penguins.