Population fluctuations and spatial relationships among Wolves, Canis lupus, Coyotes, Canis latrans, and Red Foxes, Vulpes vulpes, in Jasper National Park, Alberta

Population fluctuations and spatial relationships among Wolves, Canis lupus, Coyotes, Canis latrans, and Red Foxes, Vulpes vulpes, in Jasper National Park, Alberta.Canadian Field-Naturalist 103(2): 261-264.Coyote (Canis latrans) sightings in the Athabasca River valley of Jasper National Park, Alberta, increased from 0.13/ d in 1980 to 0.91/d in 1984, and decreased to 0.07/d in 1988, coinciding with a fluctuation in the local Wolf (Canis lupus population.Observations of Coyotes and Red Foxes (Vulpes vulpes) suggested strong spatial segregation, with Coyotes predominant in prey-rich valley bottoms and foxes common only on mountainsides.It is hypothesized that foxes were unable to utilize valley bottoms because of Coyote presence.