Trophic relationships of carnivores in Newfoundland
Institute for Biodiversity, Ecosystem Science & Sustainability (Newfoundland)
Safari Club International
Woodland caribou numbers in Newfoundland peaked in the mid-1990’s and since have seriously declined. Poor calf survival, largely due to predation by black bears, coyotes, and lynx, seems to be a major proximate cause of the decline, but habitat deterioration, the availability of alternate prey species, and changes in patterns of land use may ultimately be responsible. To investigate the trophic relationships among sympatric carnivores, we will identify species-specific food habits in three study areas representing different caribou herd ranges. We will use opportunistic and systematic searches for scats (including the use of “scat” dogs), ascertain whether calf predation is an individual or population-wide occurrence, and assess how habitat composition and use influences calf vulnerability.
Updated: September 2, 2011