Publications

12649 to 12660 of 13842 results

1. Testing and improving the accuracy of discriminant function tests: a comparison between morphometric and molecular sexing in Macaroni Penguins

   Dimorphism in various morphological traits is widely used to sex birds. However, when a threshold is set and there is overlap in the distribution of traits between sexes, there will […]

   Read more of: Testing and improving the accuracy of discriminant function tests: a comparison between morphometric and molecular sexing in Macaroni Penguins

2. Subglacial clast behaviour and its implication for till fabric development: new results derived from wireless subglacial probe experiments

   This study has investigated the three-dimensional movement of clasts within deformation till, using embedded wireless probes. These probes were part of an environmental sensor network, which measured subglacial properties (temperature, […]

   Read more of: Subglacial clast behaviour and its implication for till fabric development: new results derived from wireless subglacial probe experiments

3. Patterns of shell repair in articulate brachiopods indicate size constitutes a refuge from predation

   The cost of overcoming prey defenses relative to the value of internal tissues is a key criterion in predator/prey interactions. Optimal foraging theory predicts: (1) specific sizes of prey will […]

   Read more of: Patterns of shell repair in articulate brachiopods indicate size constitutes a refuge from predation

4. Intrinsic and extrinsic forcing in life histories: patterns of growth and stable isotopes in male Antarctic fur seal teeth

   Life-time records of the trophic sources of carbon, nitrogen and of growth rate can be generated from biogenic structures that show accretionary growth, including fish scales, whale baleen and the […]

   Read more of: Intrinsic and extrinsic forcing in life histories: patterns of growth and stable isotopes in male Antarctic fur seal teeth

5. The final warming date of the Antarctic polar vortex and influences on its interannual variability

   More than 40 years of radiosonde data from two Antarctic stations are examined for changes in the date of the final stratospheric warming that occurs each year as the vortex […]

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6. Migration and stopover in a small pelagic seabird, the Manx shearwater Puffinus puffinus: insights from machine learning

   The migratory movements of seabirds (especially smaller species) remain poorly understood, despite their role as harvesters of marine ecosystems on a global scale and their potential as indicators of ocean […]

   Read more of: Migration and stopover in a small pelagic seabird, the Manx shearwater Puffinus puffinus: insights from machine learning

7. Ice-flow velocities on Rutford Ice Stream, West Antarctica, are stable over decadal timescales

   Surface ice-flow velocities measured at stakes on Rutford Ice Stream, West Antarctica, covering a period of similar to 25 years are analysed for evidence of temporal variations in flow. No […]

   Read more of: Ice-flow velocities on Rutford Ice Stream, West Antarctica, are stable over decadal timescales

8. Towards a generalized biogeography of the Southern Ocean benthos

   To investigate whether the biogeographical regions proposed by J. W. Hedgpeth and widely adopted by other authors hold true, are an oversimplification or with further data might show a unified […]

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9. Tracking macaroni penguins during long foraging trips using ‘behavioural geolocation’

   The movement of marine vertebrates has been tracked using a variety of techniques, all of which depend on the external attachment of a transmitting or recording device. However, these devices […]

   Read more of: Tracking macaroni penguins during long foraging trips using ‘behavioural geolocation’

10. Evaluating the prudence of parents: daily energy expenditure throughout the annual cycle of a free-ranging bird, the macaroni penguin Eudyptes chrysolophus

    We measured daily energy expenditure (DEE) continuously for a whole year in a free ranging bird, the macaroni penguin Eudyptes chrysolophus. We combined these measurements with concurrently recorded foraging behaviour, […]

    Read more of: Evaluating the prudence of parents: daily energy expenditure throughout the annual cycle of a free-ranging bird, the macaroni penguin Eudyptes chrysolophus

11. Barcoding Antarctic biodiversity: current status and the CAML initiative, a case study of marine invertebrates.

    The Census of Antarctic Marine Life (CAML) aims to collate DNA barcode data for Antarctic marine species. DNA barcoding is a technique that uses a short gene sequence from a […]

    Read more of: Barcoding Antarctic biodiversity: current status and the CAML initiative, a case study of marine invertebrates.

12. Mysterious attendance cycles in Cory’s shearwater, Calonectris diomedea: an exploration of patterns and hypotheses

    Several species of seabirds show cyclic patterns of attendance at their nesting colonies. We examined the patterns of variation in the numbers of Cory’s shearwater at three colonies (two oceanic […]

    Read more of: Mysterious attendance cycles in Cory’s shearwater, Calonectris diomedea: an exploration of patterns and hypotheses