Factors influencing long-term population dynamics of pronghorn (<i>Antilocapra americana</i>): evidence of an Allee effect
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Factors influencing long-term population dynamics of pronghorn (Antilocapra americana): evidence of an Allee effect
Populations of pronghorn (Antilocapra americana) are subjected to multiple forms of density-dependent and density-independent regulation. Little is known about the combined effects of these variables across multiple populations throughout the landscape. The objectives of this study were to examine long-term trends in density and recruitment in pronghorn and to assess how different forms of regu...
متن کاملExamination of Annual Variation in the Adult SexRatio of Pronghorn (Antilocapra americana)
—The adult sex ratio (ASR) is an important component of a population’s demographics and can be used as an indicator of a population’s status. However, the causes of annual variation in ASRs are unknown for many species. Fluctuations in ASR can arise through demographic stochasticity and intense selective harvesting. In this study we investigate the longterm patterns of variation in the ASRs (bu...
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The pronghorn antelope (Antilocapra americana) is the rarest and least-known hoofedmammal classified as a game species in the state of Washington. (Woodland caribou, Rangifer tarandus caribou, are rarer, but are classified as Endangered under both Federal and Washington’s state endangered species statute). Although often called simply “antelope”, pronghorns are not true antelope at all; most au...
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2010 ii ACKNOWLEDGEMENTS This study would not have been possible without the continued support of Colby Loucks and World Wildlife Fund – US, my advisor Dean Urban and Andrew Jakes at the University of Calgary. I would also like to thank Kyran Kunkel, Mike Suitor and Cormack Gates for their advice and support throughout this project and my friends and family for their support, love and patience ...
متن کاملThe Holocene History of Pronghorn (Antilocapra americana) in Eastern Washington State
Historical documents are ambiguous regarding the presence/absence and distribution of pronghorn (Antilocapra americana) in eastern Washington State. Paleozoological (archaeological and paleontological) data indicate pronghorn were present there during most of the last 10,000 years, and available samples imply the boundaries of pronghorn distribution coincided with the modern distribution of shr...
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