CorpusUL
CorpusUL, Université Laval's Institutional repository preserves and enables easy and open access to scientific literature.
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Population density could influence herbivore foraging decisions as it affects the availability of preferred plant species and intraspecific competition. We tested the effect of density on whitetailed deer (Odocoileus virginianus) movements and activity budgets at controlled densities of 7.5 and 15 deer/km2. We also measured the activity budget of deer and plant biomass in an unfenced area at >20 deer/km2. Deer in the unfenced area spent less time active than those at controlled densities,...
The distribution of animals is the result of habitat selection according to sex, reproductive status and resource availability. Little is known about how marine predators investigate their 3-dimensional space along both the horizontal and vertical axes and how temporal variation affects space use. In this study, we assessed the spatio-temporal movement of a sexually dimorphic marine mammal, the grey seal Halichoerus grypus by 1) determining seasonal home range size, 2) testing whether space u...
A numerical approach based on finite elements and finite difference methods is suggested to simulate transport chloride into concrete or innovative ultra-high performance concrete. The theoretical model consists of coupled nonlinear partial differential equations based on Fick’s diffusion law and on cinematic equations as in mechanics. The first transport phenomenon is the ionic diffusion through the material porosity, and the second is the chloride driving by water movement through the ...
Optimal time allocation to foraging behaviour may be constrained by intrinsic and extrinsic factors forcing animals to adopt compromises to meet their daily energetic needs. Our goal was to assess the influence of individual characteristics and extrinsic factors on the activity budget of marked adult female mountain goats, Oreamnos americanus. As lactation entails important energetic costs, we specifically aimed at contrasting activity budgets of lactating and nonlactating females. We determi...