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Southern right whales (Eubalaena australis) migrate between Austral-winter calving and socialising grounds to offshore mid- to high latitude Austral-summer feeding grounds. In Australasia…
The Southern Hemisphere … Antarctic stratosphere experienced two noteworthy events in 2015: a … significant injection of sulfur from the Calbuco volcanic eruption in Chile … in April, and a record-large Antarctic ozone hole in October and November. Here…
Avian and mammalian predators play a key role in the Kerguelen Plateau ecosystem, both with respect to structuring the marine community and its response to anthropogenic influences, such as climate change and commercial fisheries.
Commercial sealers exterminated the original … fur seal population at Macquarie Island in the early 1800s. The Wrst breeding record since the sealing era was not … reported until March 1955. Three species of fur seal now … occur at Macquarie Island, the Antarctic (Arctocephalus … gazella)…
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 hot water drill was used to penetrate 480 m of ice to reveal a diverse benthic assemblage, dominated by … suspension-feeding invertebrates, under the Amery Ice Shelf (East Antarctica) at a location 100 km from open … water and at a depth of 775 m below sea level (840 m below the ice shelf surface)…
Little is known of the wider Antarctic distribution of the upper fast ice community now comprehensively described from McMurdo Sound. We determined the fast ice protist community at Davis Station, East Antarctica and compared it with that of McMurdo Sound. As at McMurdo Sound…
Bird observations were made as part of a preliminary biological survey of the southern half of the Mawson Escarpment in the southern Prince Charles Mountains, Mac.Robertson Land between 26 January and 4 February 1998. A new breeding colony of snow petrels (Pagodroma nivea) is described…