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Documents disponibles écrits par cet auteur (18)
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Article
Anthony J. Gaston, Auteur ; Neil G. Pilgrim, Auteur ; Keith Moore, Auteur ; Joanna Smith, AuteurNous avons enregistré la taille de la population et l'utilisation des arbres de nidification des Pics à Poitrine Rousse (Sphyrapicus ruber) qui nichent dans la forêt pluviale tempérée côtière et ancienne de l'île East Limestone, à Haïda Gwaii, e[...]
Article
Anthony J. Gaston, Auteur ; Yuriko Hashimoto, Auteur ; Laurie Wilson, AuteurMany marine birds undertake long migrations between breeding and wintering areas, including some species that undertake long-distance east–west or west–east movements across many degrees of longitude. To date, however, no east–west migrations ha[...]
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Anthony J. Gaston, Auteur ; Yuriko Hashimoto, Auteur ; Laurie Wilson, AuteurMany marine birds undertake long migrations between breeding and wintering areas, including some species that undertake long-distance east-west or west-east movements across many degrees of longitude. To date, however, no east-west migrations ha[...]
Article
Akiko Shoji, Auteur ; Kyle H. Elliott, Auteur ; Stéphane Aris-Brosou, Auteur ; Rory P. Wilson, Auteur ; Anthony J. Gaston, AuteurEnergy costs during breeding play an important role in the evolution of life history traits. Seabirds show substantial variation in both incubation shift length (ISL) and metabolic rates. However, it is still unclear how variation in life histor[...]
Article
Akiko Shoji, Auteur ; Kyle H. Elliott, Auteur ; Stéphane Aris-Brosou, Auteur ; Rory P. Wilson, Auteur ; Anthony J. Gaston, AuteurEnergy costs during breeding play an important role in the evolution of life history traits. Seabirds show substantial variation in both incubation shift length (ISL) and metabolic rates. However, it is still unclear how variation in life histor[...]
Article
Anthony J. Gaston, Auteur ; Charles M. Francis, Auteur ; Ian C. T. Nisbet, AuteurUse of soft-metal (aluminum alloy) bands on gulls (Laridae) is known to result in high rates of band loss and, as a result, hard-metal (monel, incoloy, or stainless steel) bands are superior for most studies. However, the U.S. Bird Banding Labor[...]
Article
Linda J. Wilson, Auteur ; Anthony J. Gaston, AuteurThe effects of various handling procedures on breeding Brunnich's Guillemot Uria lomvia were compared, using the length of time it took for individuals to return to the colony after handling (return time), to indicate the degree of stress impose[...]
Article
Shoshanah R. Jacobs, Auteur ; Kyle H. Elliott, Auteur ; Anthony J. Gaston, Auteur ; Jean-Michel Weber, AuteurThe laying of smaller replacement eggs has been described as a time-saving adaptation because chicks generally grow faster once hatched than inside the egg. However, chicks hatched from smaller eggs have, potentially, lower survival. Consequentl[...]
Article
Allison T. Moody, Auteur ; Keith A. Hobson, Auteur ; Anthony J. Gaston, AuteurArctic ecosystems are especially vulnerable to anthropogenic influences including increasing contaminant levels and climatic change. To predict effects of these changes, it is important to understand trophic relationships of arctic organisms and[...]
Article
Kyle H. Elliott, Auteur ; Shoshanah R. Jacobs, Auteur ; Julian Ringrose, Auteur ; Anthony J. Gaston, Auteur ; Gail K. Davoren, AuteurBreeding Brunnich's guillemots Uria lomvia show stepwise mass loss at the time of hatch. This mass loss has usually been explained as an adaptation to reduce the cost of flight during the chick-rearing period because flight time increases during[...]
Article
Morten Frederiksen, Auteur ; Sebastien Descamps, Auteur ; Kjell Einar Erikstad, Auteur ; Anthony J. Gaston, Auteur ; H. Grant Gilchrist, Auteur ; David Grémillet, Auteur ; Kasper L. Johansen, Auteur ; Yann Kolbeinsson, Auteur ; Jannie F. Linnebjerg, Auteur ; Mark L. Mallory, Auteur ; Laura A. McFarlane Tranquilla, Auteur ; Flemming R. Merkel, Auteur ; William A. Montevecchi, Auteur ; Anders Mosbech, Auteur ; Tone K. Reiertsen, Auteur ; Gregory J. Robertson, Auteur ; Harald Steen, Auteur ; Hallvard Strom, Auteur ; Thorkell L. Thorarinsson, AuteurPelagic seabirds are exposed to an array of potential threats during the non-breeding period, and effective management of these threats on a large scale requires knowledge of which populations winter where. Thick-billed murres (Uria lomvia) are [...]
Article
Anthony J. Gaston, Auteur ; Kyle H. Elliott, Auteur ; Yan Ropert-Coudert, Auteur ; Akiko Kato, Auteur ; Christie A. Macdonald, Auteur ; Mark L. Mallory, Auteur ; H. Grant Gilchrist, AuteurMapping areas of conservation concern for wildlife in the Arctic is urgently required to evaluate the impact of accelerating development in northern regions. There is substantial evidence that large seabird colonies reduce the availability of fo[...]
Article
Jennifer F. Provencher, Auteur ; Kyle H. Elliott, Auteur ; Anthony J. Gaston, Auteur ; Birgit M. Braune, AuteurGeneralist predator populations are sometimes made up of individuals that specialize on particular prey items. To examine specialization in thick-billed murres Uria lomvia during self-feeding we obtained stomach contents and muscle stable isotop[...]
Article
Gabriela Ibarguchi, Auteur ; Anthony J. Gaston, Auteur ; Vicki L. Friesen, AuteurMany seabirds exhibit high natal philopatry despite their extreme dispersal ability and delayed reproduction, and some exhibit phenotypic clustering in colonies and fostering or adoption of neighbouring chicks. Previous investigations of kinship[...]
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Linda A. Lait, Auteur ; Vicki L. Friesen, Auteur ; Anthony J. Gaston, Auteur ; Theresa M. Burg, AuteurThe population genetic structure of many high-latitude species in North America was affected by the last glaciation, and current structure reflects isolation in refugia and colonisation patterns. Large ice-free areas, both south of the ice sheet[...]
Article
Tara G. Martin, Auteur ; Peter Arcese, Auteur ; Petra M. Kuhnert, Auteur ; Anthony J. Gaston, Auteur ; Jean-Louis Martin, AuteurPrior scientific knowledge inspires ecological research, hypotheses and debate but is rarely used explicitly to formulate predictive models. Bayesian statistics provide a formal way to include informative priors and evaluate their influence on p[...]
Article
Anthony J. Gaston, Auteur ; Sebastien Descamps, Auteur ; H. Grant Gilchrist, AuteurDespite being widespread and easily observed, little is known about the life history of Glaucous Gulls (Larus hyperboreus). From 1984 to 2007, we examined their breeding biology and demography at Coats Island, Nunavut, Canada, where they nest al[...]
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Kyle H. Elliott, Auteur ; Gail K. Davoren, Auteur ; Anthony J. Gaston, AuteurAlthough many studies involve observations of parent birds feeding their young, few investigators have attempted to quantify possible sources of bias associated with such observations. To address this issue, we observed the provisioning behavior[...]
