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Skip to Search Results- 5Derocher, A.E.
- 5Flannigan, M.D.
- 5Hamann, A.
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- 5Sustainable Forest Management Network
- 4Lewis, Mark A.
- 66Graduate and Postdoctoral Studies (GPS), Faculty of
- 66Graduate and Postdoctoral Studies (GPS), Faculty of /Theses and Dissertations
- 26Biological Sciences, Department of
- 23Biological Sciences, Department of/Journal Articles (Biological Sciences)
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- 13Renewable Resources, Department of/Journal Articles (Renewable Resources)
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A Functional Approach Reveals Zooplankton Responses to Environmental Change in Mountain Lakes
DownloadFall 2017
Concern is increasing over the future cumulative impacts of multiple stressors on freshwater biodiversity and ecosystem function, especially in alpine environments where climatic warming increases with elevation. Here, consideration of individual species traits enables translation of changes in...
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A Modeling Framework for Assessing the Potential Impacts of Climate Change in Northeastern Alberta
Download2008-12-19
This paper provides a framework for modeling the effects of climate change on key indicators of interest to regional land-use planning teams. The framework is based on input from a technical workshop held on October 16, 2008, as well as follow-up with technical experts and a review of the...
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Spring 2012
Climate change is expected to drive major changes in agricultural production around the world, but estimates of the economic impact of these changes for Canadian agricultural production have been inconsistent. Most models use aggregate temperature data such as average temperature or growing...
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A body composition model to estimate mammalian energy stores and metabolic rates from body mass and body length, with application to polar bears
Download2009-01-01
Derocher, Andrew E., Klanjscek, Tin, Molnár, Péter K., Lewis, Mark A., Obbard, Martyn E.
Many species experience large fluctuations in food availability and depend on energy from fat and protein stores for survival, reproduction and growth. Body condition and, more specifically, energy stores thus constitute key variables in the life history of many species. Several indices exist to...
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1999
We observed a case of adoption of a single four-month-old polar bear cub (Ursus maritimus) into an existing litter of two cubs on Hopen Island, Svalbard. We believe the high density of maternity dens in the study area may increase the likelihood of natural adoption. Speculation about theoretical...
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Afforestation and stand age affected soil respiration and net ecosystem productivity in hybrid poplar plantations in central Alberta, Canada
DownloadFall 2010
Afforestation and stand development can significantly affect soil respiration and net ecosystem productivity (NEP). I studied 1) the effects of afforestation on NEP by comparing cropland previously planted to barley (on a barley-barley-alfalfa-alfalfa-alfalfa rotation) and that converted to a...
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2013-08-27
The Natural Regions and Subregions classification represents the state-of-the-art in ecological land classification in Alberta. It is becoming increasingly apparent, however, that current landscape patterns are destined to change in coming decades as a consequence of global warming. In this...
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2007
A case of polar bear infanticide and cannibalism is reported from Phippsøya, Svalbard. In this instance, a cub of some 7 months was killed by an adult male bear, which was in poor condition, in the close proximity of the mother,which was also in poor condition. It seems probable that the attack...