Antarctic accumulation seasonality
The resemblance of the orbitally filtered isotope signal from the past 340 kyr in Antarctic ice cores to Northern Hemisphere summer insolation intensity has been used to suggest that the […]
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Read more of: Antarctic accumulation seasonality
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Trans-equatorial migration, staging sites and wintering area of Sabine’s Gulls Larus sabini in the Atlantic Ocean
Read more of: Trans-equatorial migration, staging sites and wintering area of Sabine’s Gulls Larus sabini in the Atlantic OceanThe migrations and winter distributions of most seabirds, particularly small pelagic species, remain poorly understood despite their potential as indicators of marine ecosystem health. Here we report the use of […]
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Upper temperature limits of tropical marine ectotherms: global warming implications
Read more of: Upper temperature limits of tropical marine ectotherms: global warming implicationsAnimal physiology, ecology and evolution are affected by temperature and it is expected that community structure will be strongly influenced by global warming. This is particularly relevant in the tropics, […]
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The impact of high-frequency current variability on dispersion off the eastern Antarctic Peninsula
Read more of: The impact of high-frequency current variability on dispersion off the eastern Antarctic PeninsulaWe present observations of high-frequency current variability on the continental shelf and the slope of the Antarctic Peninsula using Lagrangian surface drifters deployed as part of the Antarctic Drifter Experiment: […]
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Untouched Antarctica: mapping a finite and diminishing environmental resource
Read more of: Untouched Antarctica: mapping a finite and diminishing environmental resourceGlobally, areas categorically known to be free of human visitation are rare, but still exist in Antarctica. Such areas may be among the most pristine locations remaining on Earth and, […]
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Ill-posedness of the shallow-ice approximation when modelling thermoviscous instabilities
Read more of: Ill-posedness of the shallow-ice approximation when modelling thermoviscous instabilitiesA recent paper by Reference CalovCalov and others (2010) presents an intercomparison of several numerical ice-sheet models where the development of large-scale thermo-viscous instabilities is compared. In all but one […]
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Soil- and enantiomer-specific metabolism of amino acids and their peptides by Antarctic soil microorganisms
Read more of: Soil- and enantiomer-specific metabolism of amino acids and their peptides by Antarctic soil microorganismsMost nitrogen (N) enters many Arctic and Antarctic soil ecosystems as protein. Soils in these polar environments frequently contain large stocks of proteinaceous organic matter, which has decomposed slowly due […]
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Kinematic waves in polar firn stratigraphy
Read more of: Kinematic waves in polar firn stratigraphyRadar studies of firn on the ice sheets have revealed complex folds on its internal layering that form from the interplay of snow accumulation and ice flow. A mathematical theory […]
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Non-indigenous microorganisms in the Antarctic: assessing the risks
Read more of: Non-indigenous microorganisms in the Antarctic: assessing the risksThe Antarctic continent is frequently cited as the last pristine continent on Earth. However, this view is misleading for several reasons. First, there has been a rapid increase in visitors […]
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Rapid deglaciation of Marguerite Bay, western Antarctic Peninsula in the Early Holocene
Read more of: Rapid deglaciation of Marguerite Bay, western Antarctic Peninsula in the Early HoloceneGlacial geological evidence of rapid ice stream retreat is important for the potential insight it can bring to understanding of contemporary rapid ice sheet change. Here, we report new chronological […]
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Antarctic terrestrial biodiversity in a changing world
Read more of: Antarctic terrestrial biodiversity in a changing worldRecent analyses of Antarctic terrestrial biodiversity data, in combination with molecular biological studies, have created a new paradigm that long-term persistence and regional isolation are general features of most of […]
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Extended ecophysiologicalanalysis of Gomphiocephalus hodgsoni (Collembola) : flexibility in life history strategy and population response
Read more of: Extended ecophysiologicalanalysis of Gomphiocephalus hodgsoni (Collembola) : flexibility in life history strategy and population responseThe springtail Gomphiocephalus hodgsoni (Arthropoda: Collembola) has been the focus of extensive ecophysiological and molecular genetic work and is now arguably the most well-studied of the continental Antarctic springtails. Here, […]