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The collapse of the Larsen A and B and other ice shelves fringing the Antarctic Peninsula … coastline raises questions about the status of ice shelves in other parts of the continent. Are … the large ice shelves along the East Antarctic coast also in danger of permanent collapse…
Numerical simulations and laboratory experiments confirm my initial research hypothesis stating that dense water cascading down a submarine canyon induces localised upwelling of deeper water onto the shelf. This process, not described before…
We have sequenced the 18S–26S nuclear ribosomal DNA ITS region from the genome of nine … different moss species from the Ross Sea region of Antarctica. This relatively quick and simple technique … enables these species to be readily distinguished, facilitating their taxonomic identification.
This paper summarizes the results of krill demographic studies from the Commission for the Conservation of … Antarctic Marine Living Resources 2000 Survey—a large-scale krill survey across the Scotia Sea conducted in January/ … February 2000.
Vessels from Japan, Peru, and the USA conducted four sequential surveys designed to estimate the biomass density … and demography of Antarctic krill in the vicinity of the South Shetland Islands between late December 1999 and early … March 2000.
Resolving the spatial variability in the population structure of Antarctic krill (Euphausia superba) requires a synoptic … sample, as in the design of the CCAMLR 2000 Survey. However, this approach is not appropriate for assessing … temporal variability.
Chlorophyll-a (Chl-a) concentrations in surface waters were measured at 137 hydrographic stations occupied by four … research vessels participating in the CCAMLR 2000 Survey and the values were compared to estimates from data … acquired by the SeaWiFS satellite.
In the mid 1920’s, Sir Alister Hardy developed a radical new method for sampling plankton continuously, rather than taking spot samples using conventional plankton nets. The CPR was first used in Antarctic waters during the 1925-27 Discovery expedition…
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.
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…
Growth trends of Antarctic krill with sex, length, season, and region as independent variables … were modelled with a linear mixed model (LMM) using … 10 yr of accumulated instantaneous growth rate (IGR) measurements. A model of inter-moult period (IMP) as … a function of temperature…
Ice-core records are a key resource for reconstructing Antarctic climate. However, a … number of physical processes preclude the simple interpretation of ice-core properties such as oxygen … isotopic ratios in terms of climate variables like temperature or sea-level pressure. We show that welldated…
This study represents the first investigation into the feasibility of using remote sensing to map and monitor the vegetation of sub-Antarctic islands. There have previously been no studies using satellite technology to remotely sense vegetation change in the Antarctic or sub-Antarctic regions…
Abstract … Little effort has been devoted to differentiating between hydrocarbon losses through evaporation and biodegradation … in treatability studies of fuel-contaminated Antarctic soils. When natural attenuation is being considered as a treatment … option…
Dome C, Antarctica (75 S, 123 E; 3250 meters) is one of the coldest and driestlocations on Earth, with exceptionally low winds throughout the atmosphere. It therefore has the potential to be an ideal site for astronomical observations.
Long-term studies at Bird Island, South … Georgia, show that numbers of wandering, black-browed … and grey-headed albatrosses have been decreasing … since the late 1970s. To determine the status of the total … South Georgia population…
Two superficially similar species, Eusirus perdentatus Chevreux, 1912, and E. propeperdentatus Andres, 1979, have overlapping geographic distributions around Antarctica. Here, revisions are suggested for both species to clarify their status and distribution and to facilitate identifications…
In order to assess seasonal and spatial changes in diet, the ä15N and ä13C signatures of … vibrissae from leopard seals Hydrurga leptonyx obtained from Prydz Bay, Eastern Antarctica, were … compared with those of a captive seal on a known diet. Using the isotopic signatures of known prey…
In many temperate regions, fuel and oil spills are sometimes managed simply by allowing natural degradation to … occur, while monitoring soils and groundwater to ensure that there is no off-site migration or on-site impact.
The dynamics of animal populations are determined by several key demographic parameters, which vary over time with resultant changes in the status of the population. When managing … declining populations, the identification of the parameters that drive such change are a high priority…
A superposed epoch analysis of variations of the vertical electric field measured at Vostok (78.51S, 1071E; magnetic … latitude 83.61S) during 1998–2002 heliocentric current sheet (HCS)…
We report on the first Southern Hemisphere comparison between polar mesosphere summer echoes (PMSE) and cosmic noise absorption (CNA). Observations were obtained during the austral summer of 2003–2004 from a 55 MHz MST radar, a 38.