Algonquin Provincial Park

Professor Murray's research studies the impact of habitat changes on lynx and wolves.

In the case of lynx, habitat loss and fragmentation from timber harvest, agriculture, and human development appear to limit the southern range distribution of the species. Prof.

Murray is undertaking investigations into the specific mechanisms underlying such limitation. His work involves radio-collaring lynx and looking at their use of habitat along the range periphery, along with complimentary work assessing how populations of their primary prey, snowshoe hares, function in a fragmented habitat.

"We suspect that commercial logging and forest thinning practices are deleterious to lynx and snowshoe hares because marginal habitat is unable to support high densities of snowshoe hares," stated Prof. Murray. "As well as the fact that lynx are exposed to intense commercial trapping where human access is facilitated."

In his work on wolves, Prof. Murray's research suggests that the southern distribution of eastern wolves is limited by hybridization with coyotes. Interested in understanding the underlying factors governing wolf-coyote hybridization dynamics, and determining if the zone of hybridization currently is stationary or is expanding, Prof. Murray's research involves radio-collaring wolves, coyotes, and hybrids in and around Algonquin Provincial Park and examining distribution, space and habitat use patterns, and survival and productivity, of these groups.

"We are trying to assess the possibility that hybrids are more adept at colonizing fragmented landscape than are wolves, and thereby offer an important genetic threat to wolf populations in human-managed landscapes," explained Prof. Murray.

"Ultimately, we seek to determine the long-term viability and genetic integrity of wolves in and around Algonquin Provincial Park."

CONTACT: Dr. Dennis Murray, Canada Research Chair in Terrestrial Ecology, Trent University Tel: +1 705 748 1011 ext: 7078

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