| Modeling of predator-prey dynamics in relation to changes in predator and prey densities has failed to explain most variation in kill rates or prey selection in multiple prey systems. This thesis focuses on other sources of variation in kill rates and prey use, specifically changes in costs and benefits of prey types with variation in accessibility and vulnerability to predators, as well as variation in genetic admixture of wolves (Canis sp.) potentially influencing predator effectiveness with different prey. Using fine scale GPS data and intensive field efforts, relative use of moose and deer by wolves was quantified, and assessed relative to changes in winter conditions affecting accessibility and vulnerability, and among hybrid classes of wolves. Predation patterns were influenced by accessibility of deer and vulnerability of moose, and changed with winter progression. Predation patterns differed among hybrid classes of wolves, suggesting further research on this question is warranted.;Keywords: eastern wolf, moose, deer, predator-prey dynamics, optimal foraging, genetic admixture, hybridization, prey selection. |
