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Skip to Search Results- 15Biological Sciences, Department of
- 15Biological Sciences, Department of/Journal Articles (Biological Sciences)
- 8Graduate and Postdoctoral Studies (GPS), Faculty of
- 8Graduate and Postdoctoral Studies (GPS), Faculty of/Theses and Dissertations
- 3Agricultural, Food and Nutritional Science, Department of
- 3Agricultural, Food and Nutritional Science, Department of/Journal Articles (Agricultural, Food and Nutritional Science)
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Spring 2019
This thesis explores the market efficiency in the US and Canadian corporate bond markets through examining the profitability and time variations of two widely studied asset pricing anomalies, i.e., the momentum effect and the return seasonality. The momentum effect refers to the abnormal gains...
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Performance and stability of performance of spring wheat variety mixtures in organic and conventional management systems in western Canada
Download2009
O'Donovan, John T., Navabi, Alireza, Kaut, A. H. E. E., Spaner, Dean, Mason, Heather E.
Wheat (Triticum aestivum L.) variety mixtures represent a relatively unexplored avenue for maintaining and stabilizing yield for both organic and conventional producers. The present study examined the responses of three Canadian western red spring wheat varieties in sole crop and in variety...
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2003
Skaare, J.U., Wiig, Ø., Haave, M., Dahl, E., Lie, E., Ropstad, E., Derocher, A.E.
High concentrations of polychlorinated biphenyls (PCBs) in polar bears from Svalbard have increased concern for that population’s reproductive health. We examined whether there were associations between the plasma concentrations of PCBs and reproductive hormones [progesterone (P4) and...
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1980
Environmental variation is often a very important aspect in the ecology of organisms, with most populations experiencing at least seasonal fluctuations in resource availability and thus in their carrying capacity (Annegers 1973; Emmel 1976, chap. 10; Fleming and Hooker 1975; Fretwell 1972). A...
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Population-level responses of fathead minnow (Pimephales promelas) to alarm substances and predator odour
DownloadSpring 2010
Alarm substances, released by injured prey, and odours from predators, such as northern pike, are chemical cues associated with increased predation risk in aquatic ecosystems. In laboratory studies, individual prey can respond to the presence of such cues by reducing conspicuous behaviours, such...
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2008
Wilson, W.F., Lingle, S., Feldman, A., Boyce, M.S.
Variation in the temporal pattern of vulnerability can provide important insights into predator-prey relationships and the evolution of antipredator behavior. We illustrate these points with a system that has coyotes (Canis latrans) as a predator and two species of congeneric deer (Odocoileus...
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2011-01-01
The critical domain size problem determines the size of the region of habitat needed to ensure population persistence. In this paper we address the critical domain size problem for seasonally fluctuating stream environments and determine how large a reach of suitable stream habitat is needed to...