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Antarctica is both the coldest and most arid continent on Earth, and experiences continuous light in midsummer and continuous darkness in midwinter. These factors reduce the growth rate of the continental Antarctic flora (mosses, lichens and algae) to a minimum.
Aim: There is no previous direct evidence for the occurrence of lacustrine refuges … for invertebrate fauna in Antarctica spanning the Last Glacial Maximum (LGM).
The effects of ultra-violet radiation (UVR) stress on the growth, biochemical … composition and fatty acid profiles of four Antarctic microalgae from the University of Malaya Algae … Culture Collection (UMACC) were investigated. The microalgae studied were Chlamydomonas UMACC … 229…
The growth, biochemical composition and fatty acid profiles of six Antarctic microalgae cultured at different … temperatures, ranging from 4, 6, 9, 14, 20 to 30 ◦C, were compared. The algae were isolated from seawater, freshwater…
Abstract. The discovery of an abundance of microorganisms that flourish in a diverse range of environments, from the frigid waters of the Antarctic, to the superheated waters of the hydrothermal vents, at the bottom of 11-km … deep ocean trenches and in salt-saturated lakes…
In Australia more than 300 vertebrates, including 43 insectivorous bat species, depend on hollows in … habitat trees for shelter, with many species using a network of multiple trees as roosts. We used roost-switching … data on white-striped freetail bats (Tadarida australis; Microchiroptera:
The current shape and rate of change of the margins of the Antarctic ice sheet are … poorly known. Since polar regions are inhospitable, remotely sensed images … provide an invaluable data source for studying the ice margin.
Mark-recapture models applied to double-observer distance sampling data neglect the information … on relative detectability of objects contained in the distribution of observed distances.
Thorium-234 is increasingly used as a tracer of ocean particle flux, primarily as a means to estimate particulate organic carbon … export from the surface ocean. This requires determination of both the 234Th activity distribution (in order to calculate 234Th fluxes)…
[1] We analyzed d29Si of dissolved silicate for eight water column profiles across the … Southern Ocean (south of Australia in spring 2001) from the Seasonal Ice Zone (SIZ) north to the Subantarctic Zone (SAZ), including the first isotopic compositions measured … for Si-depleted seawaters.
An episode of anomalous enhance ozone concentration in the mid-stratosphere above … Davis, Antarctica (68.6S, 78.0E) during October 2005 has been linked to a filament of … tropical ozone-rich air that was forced to high latitudes by a disturbance to the … circulation of the polar vortex.
A summary of stratospheric measurements above Davis, Antarctica (68.6°S, 78.0°E) for the winter and spring of 2005 is presented. A rapid warming was observed in the … lower stratosphere during the third week of August.