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Habitat preference, accessibility, and competition limit the global distribution of breeding black-browed albatrosses

1 January, 2011 by Philip Trathan, Richard Phillips

Telemetry methods and remote sensing now make it possible to record the spatial usage of wide-ranging marine animals and the biophysical characteristics of their pelagic habitats. Furthermore, recent statistical advances…

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South Georgia: a key location for linking physiological capacity to distributional changes in response to climate change

1 December, 2010 by David Barnes, Huw Griffiths, Lloyd Peck, Simon Morley

Antarctic marine invertebrates from the Western Antarctic Peninsula (WAP) are generally stenothermal, with three-month survival and activity limits above the average maximum summer seawater temperature (1.0 degrees C) of 1-6…

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Contrasting the efficiency of radiation belt losses caused by ducted and nonducted whistler-mode waves from ground-based transmitters

1 December, 2010 by Mark Clilverd

It has long been recognized that whistler-mode waves can be trapped in plasmaspheric whistler ducts which guide the waves. For nonguided cases these waves are said to be "nonducted", which…

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Excitation of electron cyclotron harmonic waves in the inner Saturn magnetosphere within local plasma injections

1 December, 2010 by Richard Horne

Strong electron cyclotron harmonic (ECH) waves have been observed by Cassini associated with local plasma injection regions in the Saturnian magnetosphere. Using measured electron distributions from the Cassini plasma spectrometer,…

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Probing the relationship between electromagnetic ion cyclotron waves and plasmaspheric plumes near geosynchronous orbit

11 November, 2010 by Richard Horne

Plasmaspheric plumes created during disturbed geomagnetic conditions have been suggested as a major cause of increased occurrences of electromagnetic ion cyclotron (EMIC) waves at these times. We have catalogued occurrences…

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Assessing the potential of multispectral remote sensing for lithological mapping on the Antarctic Peninsula: case study from eastern Adelaide Island, Graham Land

1 June, 2010 by Teal Riley

The results of lithological mapping using Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data for the Wright Peninsula region of Adelaide Island, Antarctic Peninsula are compared with existing geological…

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Potential impacts of Antarctic bioprospecting and associated commercial activities upon Antarctic science and scientists

23 April, 2010 by Kevin Hughes

The Antarctic Treaty and associated agreements have little to say specifically on bioprospecting activities within the Treaty area. Consequently, Antarctic bioprospecting has elicited much debate within the Antarctic community, particularly…

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Use of POES SEM-2 observations to examine radiation belt dynamics and energetic electron precipitation into the atmosphere

1 April, 2010 by Mark Clilverd, Mai Mai Lam

The coupling of the Van Allen radiation belts to the Earth's atmosphere through precipitating particles is an area of intense scientific interest. Currently, there are significant uncertainties surrounding the precipitating…

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Atmospheric decadal variability from high-resolution Dome C ice core records of aerosol constituents beyond the Last Interglacial

1 January, 2010 by Eric Wolff

Along the EPICA Dome C ice core, we measured concentrations of different water-soluble aerosol constituents and deduced total depositional flux records. Here we present high-resolution sodium, calcium, ammonium and nitrate…

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Gene expression associated with changes in cold tolerance levels of the Antarctic springtail, Cryptopygus antarcticus

1 January, 2010 by Guy Hillyard, Michael Thorne, Roger Worland, Melody Clark, Peter Convey

The ability of the Antarctic microarthropod Cryptopygus antarcticus (Collembola, Isotomidae) to survive low temperatures has been well studied at the physiological level, with recent investigations indicating the importance of the…

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Brood-guarding duration in black-browed albatrosses: Thalassarche melanophris: temporal, geographical and individual variation

1 January, 2010 by Richard Phillips

In birds, the period spent brooding or guarding young chicks is highly variable, but such variation has seldom been studied. Previous single-year studies of Antarctic petrels Thalassoica antarctica and grey-headed…

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