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Throughout the Southern Hemisphere many terrestrial taxa have circum-Antarctic distributions. This pattern is generally … attributed to ongoing dispersal (by wind, water, or migrating birds) or relict Gondwanan distributions. Few of these … terrestrial taxa have extant representatives in Antarctica…
Law Dome, in coastal East Antarctica, is a relatively low-latitude site (6646S) with a strong maritime … climate, dominated by cyclonic precipitation which produces high snow accumulation rates and very … well-resolved ice core records.
Ice cores from Law Dome, in coastal East Antarctica, provide climate records that have strong connections to … the Southern Ocean and mid-latitude climate in the … Australian region. The overall climate history available from … Law Dome extends back for tens of millennia…
Glacier retreat has been widespread on Heard Island, an isolated 2745-m-high … volcano in the southern Indian Ocean, since the first observations in 1947. This study … represents the first quantification of the mass loss of a Heard Island glacier. Brown … Glacier is 4.
Hybridization among organisms can potentially contribute to the processes of evolution, but this depends on the fitness of hybrids relative to parental species. A small, recently … formed population of fur seals on subantarctic Macquarie Island contains a high proportion … of hybrids (17–30%)…
Human impacts on natural systems can cause local population extinctions, which may promote … redistribution of taxa and secondary contact between divergent lineages. In mammalian … populations that have mating systems shaped by polygyny and sexual selection…
Human-induced changes to natural systems can cause major disturbances to fundamental … ecological and population processes and result in local extinctions and secondary contacts … between formerly isolated species. Extensive fur seal harvesting during the nineteenth … century on Macquarie Island…
The efficacy of a new mass-transfer method for … estimating milk intake was examined in Antarctic fur … seals (Arctocephalus gazella) at Iles Kerguelen. Our … method differed from previous mass-transfer approaches … in that we estimated milk-mass transfer as the maternal … mass lost (MML; kg)…
A series of nutrient-amended microcosms was used to investigate changing microbial communities during biodegradation in … hydrocarbon-contaminated Antarctic soils at 4, 10 and 42 °C. Although sample heterogeneity resulted in no statistically significant … reduction in total petroleum hydrocarbons…
In this investigation different sorbent materials (MYCELX coated sand, granular activated carbon (GAC) and surfactantmodifed … zeolite (SMZ)) were tested for their suitability for capture of sparingly soluble hydrocarbons in soil water.
the glaciation and isolation of the Antarctic continent completed by ~10 million years ago, and not by the sequential break-up of Gondwana (completed by ~32 million years ago). More recently…
Controlled Release Nutrient sources assist in the bioremediation of hydrocarbon spills by stimulating microbial activity. However, freeze–thaw activity might result in splitting of fertilizer pellets with the uncontrolled release of nutrients. We examined … the role of freeze…
Repeated exposure to human activity can change the behavioural response of wildlife, having … implications for management.Weddell seals (Leptonychotes weddellii) breeding close to Antarctic research … stations are easily accessible and regularly visited by people.
We sequenced the mitochondrial (mt) DNA cytochrome c oxidase subunit I gene to examine comparative phylogeographic patterns … for the springtail Gomphiocephalus hodgsoni and the mite Stereotydeus mollis throughout their ranges in southern Victoria Land, Antarctica.
Abstract. An eddying global model is used to study the characteristics … of the Antarctic Circumpolar Current (ACC) in a … streamline-following framework. Previous model-based estimates … of the meridional circulation were calculated using … zonal averages:
We reexamine the relationship between circulation, bathymetry, and surface … chlorophyll in the Southern Ocean, using new high-resolution maps of the frontal structure … of the Antarctic Circumpolar Current (ACC) derived from satellite altimetry.