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Skip to Search Results- 6Lewis, Mark A.
- 3Krkošek, Martin
- 3Peacock, Stephanie J.
- 2Boutin, S.
- 2Derocher, A.E.
- 2Krkosek, Martin
- 23Graduate and Postdoctoral Studies (GPS), Faculty of
- 23Graduate and Postdoctoral Studies (GPS), Faculty of /Theses and Dissertations
- 18Biological Sciences, Department of
- 16Biological Sciences, Department of/Journal Articles (Biological Sciences)
- 5Mathematical and Statistical Sciences, Department of
- 5Mathematical and Statistical Sciences, Department of/Research Publications (Mathematical and Statistical Sciences)
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Spring 2014
The Mackenzie Delta is the second largest northern delta in the world. The water from the Delta entering the Beaufort Sea has a significant impact on its dynamics. Areas in the Delta were surveyed using LiDAR (Light Detection and Ranging). The goals of this study were to characterize the...
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Aquaculture-induced changes to dynamics of a migratory host and specialist parasite: a case study of pink salmon and sea lice
Download2012-01-01
Ashander, Jaime, Lewis, Mark A., Krkošek, Martin
Exchange of diseases between domesticated and wild animals is a rising concern for conservation. In the ocean, many species display life histories that separate juveniles from adults. For pink salmon (Oncorhynchus gorbuscha) and parasitic sea lice (Lepeophtheirus salmonis), infection of juvenile...
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Brown Bear (Ursus arctos) Predation of Broad Whitefish (Coregonus nasus) in the Mackenzie Delta Region, Northwest Territories
Download2009
On 2 October 2007, we observed evidence of at least one brown bear (Ursus arctos) predating and caching broad whitefish (Coregonus nasus) at Pete’s Creek, a tributary of the Mackenzie River, Northwest Territories. While predation on whitefish by brown bears has been reported as traditional...
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2014-01-01
Peacock, Stephanie J., Connors, Brendan M., Krkošek, Martin, Irvine, James R., Lewis, Mark A.
The impact of parasites on hosts is invariably negative when considered in isolation, but may be complex and unexpected in nature. For example, if parasites make hosts less desirable to predators then gains from reduced predation may offset direct costs of being parasitized. We explore these...
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2010
Longrich, N. R., Currie, P. J., Erickson, G. M., Horner, J. R.
Background: Tyrannosaurus rex was one of the largest terrestrial carnivores of all time, and consequently its ecology and diet have been the focus of much discussion. However, there is little direct evidence of diet or feeding habits in this species. Methodology/Principal Findings: Examination...
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2013-01-01
Krkosek, Martin, Orr, Craig, Peacock, Stephanie J., Proboszcz, Stan, Lewis, Mark A.
The resilience of coastal social-ecological systems may depend on adaptive responses to aquaculture disease outbreaks that can threaten wild and farm fish. A nine-year study of parasitic sea lice (Lepeophtheirus salmonis) and pink salmon (Oncorhynchus gorbuscha) from Pacific Canada indicates that...
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2013-01-01
Lewis, Mark A., Proboscsz, S., Orr, C., Krkošek, M., Peacock, S.J.
The resilience of coastal social–ecological systems may depend on adaptive responses to aquaculture disease outbreaks that can threaten wild and farm fish. A nine-year study of parasitic sea lice (Lepeophtheirus salmonis) and pink salmon (Oncorhynchus gorbuscha) from Pacific Canada indicates that...
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Fall 2010
Predation by cougars (Puma concolor) variously can structure ecosystems and preserve biodiversity, engender conflict where livestock and pets are killed, and even drive prey populations to extinction. Effective management requires a firm grasp of the ecological drivers of predation, but these...
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Fall 2012
In western North America cougar populations are increasing and expanding eastward. Simultaneously, growing human populations are creating new challenges for managers charged with maintaining the viability of cougar populations and their ungulate prey. Information on how cougars respond to...