Search Results - "Fraser, W. R."

A method for estimating colony sizes of Adélie penguins using remote sensing imagery by LaRue, M. A., Lynch, H. J., Lyver, P. O. B., Barton, K., Ainley, D. G., Pollard, A., Fraser, W. R., Ballard, G.

“…Adélie penguins ( Pygoscelis adeliae ) are important predators of krill ( Euphausia spp.) and Antarctic silverfish ( Pleuragramma antarctica ) during summer,…”
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Reducing Campylobacter and Salmonella Infection: Two Studies of the Economic Cost and Attitude to Adoption of On‐farm Biosecurity Measures by Fraser, R.W, Williams, N.T, Powell, L.F, Cook, A.J.C

“…To date there has been little research in the UK on farmer adoption of biosecurity measures to control food‐borne zoonoses that have little or no impact on…”
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A predator’s perspective on causal links between climate change, physical forcing and ecosystem response by Fraser, William R., Hofmann, Eileen E.

“…The mechanisms by which variability in sea ice cover and its effects on the demography of the Antarctic krillEuphausia superbacascade to other ecosystem…”
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Population genetic structure and colonisation of the western Antarctic Peninsula by the seabird tick Ixodes uriae by McCoy, KD, Beis, P, Barbosa, A, Cuervo, JJ, Fraser, WR, González-Solís, J, Jourdain, E, Poisbleau, M, Quillfeldt, P, Léger, E, Dietrich, M

“…Recent observations on the western Antarctic Peninsula have suggested that changing climatic conditions may be increasing pressure on breeding seabirds due to…”
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Long–term effects of flipper bands on penguins by M. Gauthier-Clerc, J. -P. Gendner, Ribic, C. A., Fraser, W. R., Woehler, E. J., S. Descamps, C. Gilly, C. Le Bohec, Le Maho, Y.

“…Changes in seabird populations, and particularly of penguins, offer a unique opportunity for investigating the impact of fisheries and climatic variations on…”
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new high-latitude record for the macaroni penguin (Eudyptes chrysolophus) at Avian Island, Antarctica by Gorman, K. B, Erdmann, E. S, Pickering, B. C, Horne, P. J, Blum, J. R, Lucas, H. M, Patterson-Fraser, D. L, Fraser, W. R

“…On 20 and 22 January 2007, we observed macaroni penguins (Eudyptes chrysolophus) on Avian Island, Antarctica, approximately 1° south of the Antarctic Circle…”
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Adélie Penguins and Environmental Change by Ainley, D. G., Ballard, G., Emslie, S. D., Fraser, W. R., Wilson, P. R., Woehler, E. J., Croxall, J. P., Trathan, P. N., Murphy, E. J.

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Ecological Structure among Migrant and Resident Seabirds of the Scotia--Weddell Confluence Region by Ainley, David G., Ribic, Christine A., Fraser, William R.

“…1. We quantitatively assess seasonal changes in community structure and habitat selection among seabirds in the Scotia-Weddell Confluence region, Antarctica…”
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Marine and terrestrial factors affecting Adélie­penguin Pygoscelis adeliae chick growth and recruitment off the western Antarctic Peninsula by Chapman, EW, Hofmann, EE, Patterson, DL, Ribic, CA, Fraser, WR

“…An individual-based bioenergetics model that simulates the growth of an Adelie penguin Pygoscelis adeliae chick from hatching to fledging was used to assess…”
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Does prey preference affect habitat choice in Antarctic seabirds? by Ainley, David G., Ribic, Christine A., Fraser, William R.

“…Diet composition of the members of 2 seabird species in the Scotia-Weddell Confluence region, Antarctica, was investigated during 3 seasons/years: spring 1983,…”
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Exploring the regional implications of interstate quarantine policies in Western Australia by Cook, D.C, Fraser, R.W

“…As a signatory of the World Trade Organization Agreement, Australia has a responsibility to ensure the behaviour of its internal markets for food and…”
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The distribution of seabirds and pinnipeds in Marguerite Bay and their relationship to physical features during austral winter 2001 by Chapman, Erik W., Ribic, Christine A., Fraser, William R.

“…The distribution of seabirds and pinnipeds and their relationship to physical oceanographic variables were investigated as part of the US Southern Ocean Global…”
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Antarctic Mesopelagic Micronekton: Evidence from Seabirds that Pack Ice Affects Community Structure by Ainley, D. G., Fraser, W. R., Sullivan, C. W., Torres, J. J., Hopkins, T. L., Smith, W. O.

“…Through a multidisciplinary project (AMERIEZ), with an unusual complement of components, previously unknown temporal and spatial dimensions to the structure of…”
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Using Kite-Based Aerial Photography for Conducting Adélie Penguin Censuses in Antarctica by Fraser, William R., Carlson, John C., Duley, Peter A., Holm, Eric J., Patterson, Donna L.

“…Adélie Penguins (Pygoscelis adeliae) are sensitive indicators of change in Antarctic marine and terrestrial habitats, and have been intensively monitored as…”
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Skua survival by TRIVELPIECE, W. Z, AINLEY, D. G, FRASER, W. R, TRIVELPIECE, S. G

“…A report that noted reproductive failure among South Polar skuas nesting at Palmer Station Antartica, in 1988-89, and concluded that failure was an indirect…”
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Do crabeater seals forage cooperatively? by Gales, Nicholas J., Fraser, William R., Costa, Daniel P., Southwell, Colin

“…Crabeater seals are abundant pack-ice predators that feed almost exclusively on krill. They have a circumpolar distribution and are generally sighted hauled…”
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Ice Edges and Seabird Occurrence in Antarctica by Fraser, William R., Ainley, David G.

“…Biologists are researching factors affecting seabird pelagic distribution, abundance, and feeding ecology in the Antarctic. Seabirds are organized into…”
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Factors affecting fledging weight of Adélie penguin (Pygoscelis adeliae) chicks : a modeling study by SALIHOGLU, Baris, FRASER, William R, HOFMANN, Eileen E

“…An individual-based model is developed to examine mechanisms that potentially underlie the observed constancy in fledging weight (2.8-3.2 kg) of Adélie…”
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Seabird and fur seal responses to vertically migrating winter krill swarms in Antarctica by FRASER, W. R, PITMAN, R. L, AINLEY, D. G

“…The foraging behaviour of fur seals (Arctocephalus gazella ) and two species of surface feeding seabirds was observed over swarms of vertically migrating krill…”
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DEMAND UNCERTAINTY AND UNEMPLOYMENT by Fraser, R. W.

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