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Auteur Robert G. Clark |
Documents disponibles écrits par cet auteur (14)
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Jocelyn Champagnon, Auteur ; Johan Elmberg, Auteur ; Matthieu Guillemain, Auteur ; Philip Lavretsky, Auteur ; Robert G. Clark, Auteur ; Par Soderquist, AuteurIn the Anthropocene, human activities have been a dominant force affecting wildlife, natural habitats, and climate worldwide. Over time, increasing incidences of wildlife-human interactions may have positive outcomes for some generalist species,[...]Article
Robert G. Clark, Auteur ; David W. Winkler, Auteur ; Russell D. Dawson, Auteur ; Dave Shutler, Auteur ; David J. T. Hussell, Auteur ; Michael P. Lombardo, Auteur ; Patrick A. Thorpe, Auteur ; Peter O. Dunn, Auteur ; Linda A. Whittingham, AuteurDetermining demographic rates in wild animal populations and understanding why rates vary are important challenges in population ecology and conservation. Whereas reproductive success is reported frequently for many songbird species, there are r[...]Article
Hannu Poysa, Auteur ; Robert G. Clark, Auteur ; Antti Paasivaara, Auteur ; Pentti Runko, AuteurEnvironmental conditions experienced early in life may have long-term impacts on life history traits and reproductive performance. We investigated whether ambient temperature experienced during the first two to four weeks of life and weather sev[...]Article
Chantel I. Michelson, Auteur ; Robert G. Clark, Auteur ; Christy A. Morrissey, AuteurAgricultural practices have intensified during the past 50 yr, increasing crop production and altering the Canadian prairie landscape by removing or degrading uncropped habitats, including wetlands. We predicted that agricultural practices would[...]Article
Daniel W. Coulton, Auteur ; Robert G. Clark, Auteur ; David W. Howerter, Auteur ; Michael G. Anderson, Auteur ; Leonard I. Wassenaar, AuteurCosts and benefits of natal dispersal have not been fully evaluated in birds. We compared timing of breeding and nesting success for yearling female mallards Anas platyrhynchos returning to or dispersing from their natal areas. Information about[...]Article
Jesus Gomez, Auteur ; Chantel I. Michelson, Auteur ; David W. Bradley, Auteur ; D. Ryan Norris, Auteur ; Lisha L. Berzins, Auteur ; Russell D. Dawson, Auteur ; Robert G. Clark, AuteurOur understanding of the annual life-cycle movements of small migratory birds has advanced rapidly with the advent of light-weight geographical positioning devices (i.e., geolocators), yet the effects of geolocators on reproduction and survival [...]Article
Peter L. F. Fast, Auteur ; H. Grant Gilchrist, Auteur ; Robert G. Clark, AuteurEvaluating consequences of habitat selection is an important step in understanding life history strategies and behavioural decisions of animals. Kilpi and Lindstrom (1997) found that incubating common eiders Somateria mollissima on exposed, tree[...]Article
Scott Wilson, Auteur ; Marine C. Gil-Weir, Auteur ; Robert G. Clark, Auteur ; Gregory J. Robertson, Auteur ; Mark T. Bidwell, AuteurManagement efforts for endangered species are enhanced by knowledge of the causes and extent of demographic variation, but this information is often lacking even when abundance is well known. We developed an integrated population model to study [...]Article
Pierre Legagneux, Auteur ; Robert G. Clark, Auteur ; Matthieu Guillemain, Auteur ; Cyril Eraud, Auteur ; Marc Thery, Auteur ; Vincent Bretagnolle, AuteurIridescent colours produced during moult likely play an important role in pair formation in birds. We sought to quantify geographic variation in such colouration in a duck species, Eurasian teal Anas crecca, in winter (when mating occurs) to eva[...]Article
Erik E. Osnas, Auteur ; Michael C. Runge, Auteur ; Brady J. Mattsson, Auteur ; Jane Austin, Auteur ; G. Scott Boomer, Auteur ; Robert G. Clark, Auteur ; Patrick Devers, Auteur ; John M. Eadie, Auteur ; Eric V. Lonsdorf, Auteur ; Brian G. Tavernia, AuteurIn 2007, several important initiatives in the North American waterfowl management community called for an integrated approach to habitat and harvest management. The essence of the call for integration is that harvest and habitat management affec[...]Article
Kirsty E. B. Gurney, Auteur ; Robert G. Clark, Auteur ; Stuart M. Slattery, AuteurAmong temperate-breeding birds, offspring survival and reproductive success are often inversely related to timing of breeding. The mechanisms that produce seasonal declines in offspring survival are not fully understood but may be related to tem[...]Article
Daniel W. Coulton, Auteur ; Robert G. Clark, Auteur ; Leonard I. Wassenaar, Auteur ; David W. Howerter, Auteur ; Michael G. Anderson, AuteurConspecific avoidance and attraction hypotheses have been proposed to explain patterns of animal spacing behavior and have been frequently used to explain habitat selection by dispersers. In birds, tests of these hypotheses have been limited to [...]Article
Robert G. Clark, Auteur ; Hannu Poysa, Auteur ; Pentti Runko, Auteur ; Antti Paasivaara, AuteurUnderstanding how organisms adjust breeding dates to exploit resources that affect fitness can provide insights into impacts of climate change on avian demography. For instance, mismatches have been reported in long-distance migrant bird species[...]Article
Jane Austin, Auteur ; Stuart Slattery, Auteur ; Robert G. Clark, AuteurThere are 30 threatened or endangered species of waterfowl worldwide, and several sub-populations are also threatened. Some of these species occur in North America, and others there are also of conservation concern due to declining population tr[...]