Climatic variability is a dominant factor affecting large wildfires in the western United States,
an observation supported by palaeoecological data on charcoal in lake sediments and …

Snowshoe hares can have three or four litters over a summer, with five leverets on average
in each litter. All hares begin to breed in spring when they are 1 year old, so age at sexual …

North America has a diverse array of mammalian species. Model projections indicate
significant variations in future climate conditions of North America, and the habitats of …

Most examples of seasonal mismatches in phenology span multiple trophic levels, with
timing of animal reproduction, hibernation, or migration becoming detached from peak food …

Forests and woodlands in the central Rocky Mountains span broad gradients in climate,
elevation, and other environmental conditions, and therefore encompass a great diversity of …

Population dynamics of Canada lynx (Lynx canadensis) have been of interest to ecologists
for nearly sixty years,,,. Two competing hypotheses concerning lynx population dynamics …

The relationships of forest mammals (eg Myotis lucifugus, Ursus americanus, Lnyx rufus,
Sylvilagus transitionalis and Lepus americanus) to shrub-dominated and disturbance …

As duration of snow cover decreases owing to climate change, species undergoing
seasonal colour moults can become colour mismatched with their background. The …

Summary 1 Selection of prey in poor body condition allegedly is a widespread phenomenon
in predator–prey systems. Yet, it remains unclear to what extent such selection reflects …

Nous avons compté les boulettes fécales de Lièvres d'Amérique (Lepus americanus) une
fois l'an en 10 zones du sud-ouest du Yukon, de 1987 à 1996. Les boulettes ont été …