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Skip to Search Results- 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)
- 2Biological Sciences, Department of/Research Data and Materials (Biological Sciences)
- 6Lewis, Mark A.
- 3Krkošek, Martin
- 3Peacock, Stephanie J.
- 2Boutin, S.
- 2Derocher, A.E.
- 2Krkosek, Martin
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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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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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Electronic Supplementary Material: Can reduced predation offset negative effects of sea louse parasites on chum salmon?
Electronic Supplementary Material: Can reduced predation offset negative effects of sea louse parasites on chum salmon?
Download2013-11-06
The .zip file contains R code and data that accompanies the paper \"Can reduced predation offset negative effects of sea louse parasites on chum salmon?\". The R code includes three main files: (1) code to compile chum salmon spawner-recruit data from escapement, catch and age -at-return, (2)...
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2011
Hilborn, Ray, Ford, Jennifer S., Peacock, Stephanie, Dill, Lawrence M., Morton, Alexandra, Krkosek, Martin, Connors, Brendan, Lewis, Mark A., Volpe, John P., Mages, Paul, Ford, Helen
For some salmon populations, the individual and population effects of sea lice (Lepeophtheirus salmonis) transmission from sea cage salmon farms is probably mediated by predation, which is a primary natural source of mortality of juvenile salmon. We examined how sea lice infestation affects...
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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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2005
Hurd, T. E., Hebblewhite, M., Nietvelt, C. G., Paquet, P. C., Fryxell, J. M., White, C. A., Bayley, S. E., McKenzie, J. A.
Abstract: Experimental evidence of trophic cascades initiated by large vertebrate predators is rare in terrestrial ecosystems. A serendipitous natural experiment provided an opportunity to test the trophic cascade hypothesis for wolves (Canis lupus) in Banff National Park, Canada. The first wolf...
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Patterns in the species composition and richness of fish assemblages in northern Wisconsin lakes
Download1982
Fish assemblage structure, and factors and mechanisms appearing important in the ecological maintenance of these structures, were examined for 18 small lakes in northern Wisconsin during summer and winter. The study was focused around the following questions. Are there discrete, repeatable groups...
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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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1998
Boutin, S., Zuleta, G., Krebs, C. J., O'Donoghue, M., Hofer, E. J., Murray, D. L.
Coyotes and lynx are the two most important mammalian predators of snowshoe hares throughout much of the boreal forest. Populations of hares cycle in abundance, with peaks in density occurring every 8-11 yr, and experimental results suggest that predation is a necessary factor causing these...