Molecular analysis of geographic patterns of eukaryotic diversity in Antarctic soils

Article Abstract:

The application of molecular biological methods to identify a wide range of eukaryotes in Antarctic soils across a latitudinal and environmental gradient between approximately 60 and 87 degree S, in order to test the hypothesis that diversity would decrease as latitude increased is reported. Results suggest that little effective transfer of eukaryotic biota between the study sites, combined with their generally low relatedness to existing sequence databases, indicates a high level of Antarctic site isolation and possibly endemicity, a pattern not consistent with similar studies on other continents.

Research and Development in the Physical, Engineering, and Life Sciences, Molecular Biology, Genetic aspects, Eukaryotes, Genetic research

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Solar UV-B radiation inhibits the growth of Antarctic terrestrial fungi

Article Abstract:

Results show that a three-hour exposure of five fungal species, from Anatarctic terrestrial habitats, to solar radiation of less than 287 nanometer results in the reduction of hyphal extension rates of all species and that radiation of more than 400 nanometers does have an effect. Together, the data show that solar UV-B radiation reduces the fungi growth on the soil in the Antarctic terrestrial environment.

Influence, Growth, Ultraviolet radiation, Fungi, Soil biology, Company growth

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Influence of seasonal environmental variables on the distribution of presumptative fecal coliforms around an Antarctic research station

Article Abstract:

The authors have analyzed the effects of wildlife and human populations on the fecal microorganism distribution aroung Antarctic research stations. The aim of the research has been the identification of the main factors affecting fecal coliform distribution in the Antarctic near-shore marine environment.

Analysis, Demographic aspects, Environmental aspects, Enterobacter, Enterobacteriaceae, Feces, Microbiology, Arctic research, Salinity, Microbial populations, Marine ecology, Sea-water, Seawater, Microbial ecology

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