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The subsurface character and boundary conditions of the East Antarctic Ice Sheet (EAIS) remain largely unknown although they are critical to ice sheet modeling and our … understanding of the EAIS's role in global climate and sea level change.
Over the past three years a successful collaboration between a university scientist, the AADC … and EPPS has occurred, where old field data from the 1980s has been resurrected using new … mapping technologies to produce a detailed vegetation map of Heard Island. In this paper…
Monitoring includes both targeted studies designed to verify the predicted effects of specific … activities and more exploratory studies designed to detect “unknown” or unpredicted impacts. In the marine environment monitoring typically begins with an empirical experiment or survey…
In the Antarctic summer of 2003/04 Australia began the remediation of an abandoned waste … disposal site at Casey Station, East Antarctica. Waste material and contaminated soil were … removed via excavation and returned to Australia for appropriate treatment and disposal.
Permeable reactive barriers are used to adsorb contaminants from soil water. Their fillings are granular … materials whose stability under freezing conditions has not been demonstrated. In this research, three granular materials(activated carbon…
As with human cytomegalovirus (HCMV) infection of humans, murine CMV (MCMV) infection is … widespread in its natural host, the house mouse Mus domesticus, and may consist of mixed … infection with different CMV isolates.
Once again Antarctica is under threat with the proposal by Senator Barnaby Joyce to have mining sanctioned by the Australian Government. Dr Tracey Rogers, presenter of the 2006 J D Stewart Address at the University of Sydney Faculty of Veterinary Science…
During every austral summer season, the Japanese Antarctic Research Expedition (JARE) has been conducting routine zooplankton observations with a NORPAC standard net since … 1972 (JARE 14). The NORPAC standard net method seems to be suitable for analyzing … macroscale distributions. However…
Antarctica remains one of the last bastions of exploratory limnology. Lakes in many regions … remain completely unknown, in part because of their often cryptic nature. Of particular interest … is whether the biological communities present in these isolated lakes consist of recent (postglacial)…
The invertebrate animals that inhabit ice-free areas of East Antarctica have been studied … since the earliest days of Antarctic science. However, even though biodiversity and … biogeography is reasonably well known for some regions (e.g. Southern Victoria Land)…
The southern elephant seal (Mirounga leonina) population at Macquarie Island represents … about 10% of the world’s population. The number of adult females breeding at the island has … decreased substantially since the first whole island census was conducted in 1952.
This paper provides the first evidence to relate Leopard Seal numbers with sea-ice … concentrations in a region of the Eastern Antarctic pack ice and to propose a biological … mechanism (krill availability) to link the two. Leopard seals have been periodic, and sometimes numerous…
Studies of carbon flux and ecosystem processes require models of the population dynamics … of phytoplankton and other microbial organisms, but with over 500 protistan species known to … inhabit these waters, it is not feasible to model them individually. Instead…
Monitoring of zooplankton communities in the northern hemisphere has provided valuable … insights into plankton / climate interactions, and changes to plankton communities have been … shown to impact significantly on higher trophic levels.
Significant changes in zooplankton composition have occurred in various ocean systems in … recent years. These changes can be quite dramatic, occurring within one or two seasons, as … happened with the regime shift in the North Sea and North Atlantic in the late 1980s.
Ozone depletion has enhanced exposure of Antarctic marine microbes to biologically … damaging ultraviolet-B radiation (UVBR, 280-320 nm). Increased UVBR exposure may … influence the production of climatically active, biogenic sulfur compounds … (dimethylsulfoniopropionate…
We determined the effects of UVR (280 – 400 nm) on Antarctic marine protists over the … summer of 2001/02 in incubation experiments with light exposures of PAR, PAR+UVAR and … PAR+UVAR+UVBR.
One of the aims of the Antarctic Pack-Ice Seals (APIS) program was to determine the … distribution and habitat use of seals inhabiting the pack-ice surrounding Antarctica. The … Australian contribution to APIS focussed on the sector of pack-ice off east Antarctica between … 60-150oE.
Regionalisation algorithms attempt to partition a broad spatial area into discrete spatial regions, each with relatively homogeneous environmental or biotic conditions. Marine regionalisations commonly make use of data that can be represented naturally in a network context…
Sea ice is an important structuring element of Antarctic marine ecosystems and provides a vast habitat for ice-associated algae forming communities in different horizons of the ice floes.
The international cooperation that makes Antarctica a continent for science has enabled … observations of the Antarctic middle atmosphere that are not possible anywhere else on … Earth. Atmospheric radars operated by Australia (Davis), Japan (Syowa), the UK and the … USA (Rothera)…