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Documents disponibles écrits par cet auteur (22)
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Article
Mark A. Colwell, Auteur ; Chelsea Polevy, Auteur ; Hannah LeWinter, Auteur
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Katelyn M. Raby, Auteur ; Mark A. Colwell, AuteurProductivity measures, such as nest survival rates, are often used to indirectly assess habitat quality and guide management practices for conservation of threatened and endangered species. The Western Snowy Plover Charadrius nivosus nivosus is [...]
Article
Mark A. Colwell, Auteur ; Matthew J. Lau, Auteur ; Elizabeth J. Feucht, Auteur ; Jeremy J. Pohlman, AuteurConservation relies on knowledge of factors that influence the distribution and abundance of species, with the objective of managing these limiting factors. The Pacific coast population of the Snowy Plover Charadrius nivosus nivosus is listed as[...]
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Mark A. Colwell, Auteur ; Elizabeth J. Feucht, Auteur ; Chelsea Polevy, AuteurEstimates of population size are the foundation of conservation actions; they facilitate identification of important habitats and provide evidence of population growth. We conducted four high-tide, winter (4 Nov 2018-17 Feb 2019) surveys of Humb[...]
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Mark A. Colwell, Auteur ; Katelyn M. Raby, Auteur ; Elizabeth J. Feucht, AuteurAssessment of habitat quality and individual reproductive performance are vital facets of conservation, which often prompt management actions to increase population size. Here, we present a metric (breeding efficiency; BE) for gauging productivi[...]
Article
Humboldt Bay, California is more important to spring migrating shorebirds than previously recognized
Mark A. Colwell, Auteur ; Elizabeth J. Feucht, AuteurAn important first step in conservation is recognition of critical habitats worthy of protection. Both the Ramsar Convention and Western Hemisphere Shorebird Reserve Network (WHSRN) gauge wetland importance based on total shorebird abundance or [...]
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Allison M.K. Patrick, Auteur ; Mark A. Colwell, AuteurIn non-colonial species, the spatial pattern in which nests occur in a population often varies among years and with habitat quality and population size. In aggregated patterns nests occur nearer than expected by chance and apparently suitable ha[...]
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Mark A. Colwell, Auteur ; Elizabeth J. Feucht, Auteur ; Matt J. Lau, Auteur ; David J. Orluck, Auteur ; Sean E. Mcallister, Auteur ; Amber N. Transou, AuteurThe Pacific coast population of the Snowy Plover Charadrius nivosus nivosus is listed as threatened under the U.S. Endangered Species Act, which requires demographic data to inform management directed at increasing the population. Accordingly, w[...]
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Luke J. Eberhart-Phillips, Auteur ; Brian R. Hudgens, Auteur ; Mark A. Colwell, AuteurCorrelated climate patterns, dispersal, and similar management practices may synchronise dynamics of populations in close proximity, which tends to reduce metapopulation persistence. However, synchronising and desynchronising mechanisms can act [...]
Article
Mark A. Colwell, Auteur ; Noah S. Burrell, Auteur ; Michael A. Hardy, Auteur ; Kimiko Kayano, Auteur ; Jordan J. Muir, Auteur ; Wendy J. Pearson, Auteur ; Sara A. Peterson, Auteur ; Kristin A. Sesser, AuteurHabitat quality, as indexed by the reproductive success of individuals, can greatly influence population growth, especially for rare species near the limits of their range. Along the Pacific coast, the Snowy Plover (Charadrius alexandrinus nivos[...]
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Luke J. Eberhart-Phillips, Auteur ; Mark A. Colwell, AuteurSource-sink dynamics are easily overlooked when formulating recovery objectives for threatened species. This could lead to unrealistic criteria imposed on sink populations, which in turn might restrict an entire metapopulation from being deliste[...]
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Noah S. Burrell, Auteur ; Mark A. Colwell, AuteurDans Wildfowl (62 2012)The Snowy Plover Charadrius nivosus is a threatened species of shorebird that breeds along the Pacific coast of North America where predation of eggs and chicks is thought to be a principal cause of low productivity and small population size. Da[...]
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Wendy J. Pearson, Auteur ; Mark A. Colwell, AuteurBreeding dispersal subsequent to nest failure is hypothesised to be a behavioural response to danger posed by nest predators. We used histories and locations of male and female Snowy Plover Charadrius nivosus nests in northern California over a [...]
Article
Mark A. Colwell, Auteur
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Jesse R. Conklin, Auteur ; Mark A. Colwell, Auteur ; Nancy W. Fox-Fernandez, AuteurEffective shorebird conservation requires a greater understanding of use and availability of high-tide roosts in coastal non-breeding areas. In this paper, we explore 1) variation in use of roosts; 2) landscape and environmental correlates of ro[...]
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Michael A. Hardy, Auteur ; Mark A. Colwell, Auteur
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Jesse R. Conklin, Auteur ; Mark A. Colwell, AuteurAmong shorebirds, many individuals make migratory and short-distance movements in large flocks, suggesting that stable social groups may persist within populations for days to months. We examined high-tide associations among individual radio-mar[...]
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Jesse R. Conklin, Auteur ; Mark A. Colwell, Auteur
Article
Mark A. Colwell, Auteur ; Sean E. Mcallister, Auteur ; Cheryl B. Millett, Auteur ; Amber N. Transou, Auteur ; Stephen M. Mullin, Auteur ; Zach J. Nelson, Auteur ; Carol A. Wilson, Auteur ; Ron R. Levalley, Auteur
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Samantha E. Franks, Auteur ; D. Ryan Norris, Auteur ; T. Kurt Kyser, Auteur ; Guillermo Fernández, Auteur ; Birgit Schwarz, Auteur ; Roberto Carmona, Auteur ; Mark A. Colwell, Auteur ; Jorge Correa Sandoval, Auteur ; Alexey Dondua, Auteur ; H. River Gates, Auteur ; Ben Haase, Auteur ; David J. Hodkinson, Auteur ; Ariam Jimenez, Auteur ; Richard B. Lanctot, Auteur ; Brent Ortego, Auteur ; Brett K. Sandercock, Auteur ; Felicia Sanders, Auteur ; John Y. Takekawa, Auteur ; Nils Warnock, Auteur ; Ron C. Ydenberg, Auteur ; David B. Lank, AuteurUnderstanding the population dynamics of migratory animals and predicting the consequences of environmental change requires knowing how populations are spatially connected between different periods of the annual cycle. We used stable isotopes to[...]
Article
Mark A. Colwell, Auteur
Article
Mark A. Colwell, Auteur ; Jason J. Meyer, Auteur ; Michael A. Hardy, Auteur ; Sean E. Mcallister, Auteur ; Amber N. Transou, Auteur ; Ron R. Levalley, Auteur ; Stephen J. Dinsmore, AuteurPredation is an important cause of nest failure for many birds and has shaped the life-history characteristics of many species, especially ground-nesting shorebirds. We examined nesting success, causes of clutch failure and nest survival in rela[...]
