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L’Université Laval est l'une des plus grandes universités au Canada. Elle a été fondée en 1852 à l'initiative du Séminaire de Québec, lui-même fondé en 1663, et constitue ainsi le plus ancien établissement d’enseignement supérieur francophone en Amérique, et la sixième plus ancienne université du Canada.
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Displaying 6 - 9 of 9Vegetation and Soil Seed Bank Relationships Across Microhabitats in an Abandoned Quercus suber Parkland Under Simulated Fire
Mediterranean agro-forestry systems are undergoing rapid change due to abandonment. This turns formerly cultivated or grazed oak-tree parklands (i.e., savanna-type formations called âdehesasâ) into flammable formations of scattered trees within a matrix of shrubs with open spaces. Wildfires can now occur, threatening the persistence of these formations. Fire-prone shrublands commonly regenerate after fire from seeds stored in the soil.
Are VegetationââEnvironment Relationships Different Between Herbaceous and Woody Groundcover Plants in Barrens with Shallow Soils?
The extent to which woody vegetation exhibits more expansive community structures and different relationships with environmental variables than herbaceous plants is poorly understood in savannas and barrens worldwide, especially those with shallow soils. We explored this question in oak barrens, which are savanna habitats characterized by shallow soils, in southern Ohio, USA. Groundcover plant aerial cover and environmental data were collected using 75 randomly located 1-m2 quadrats in 3 barrens.
Fine-Scale Habitat Selection by Female Forest-Dwelling Caribou in Managed Boreal Forest: Empirical Evidence of a Seasonal Shift between Foraging Opportunities and Antipredator Strategies
Forest harvesting is a major cause of habitat alteration negatively affecting forest-dwelling caribou (Rangifer tarandus caribou) in the boreal forest. In order to identify female caribou habitat requirements, we conducted a fine-scale habitat selection analysis in a managed forest of eastern Canada. Five land-cover types used by 8 female caribou during 2 periods (winter and snow-free) were considered to characterize structural attributes, ground cover, and lichen abundance at 320 GPS locations and at 200 random points within home ranges.
Augmentation Du Couvert En Peuplier Faux-Tremble Dans Les Pessièères Noires Du Nord-Ouest Du Quéébec Aprèès Coupe Totale
In the eastern Canadian boreal forest, the term hardwood expansion or encroachment (enfeuillement in French) generally refers to the phenomenon of increasing cover of intolerant hardwoods, notably aspen (Populus tremuloides), following clearcutting. Such expansion is perceived as a local (stand-level) process that is reflected at a larger, regional scale. The objective of this study was to characterize the increase in aspen cover following clearcutting in the clay belt of Abitibi, in northwestern Quebec.