Overflow and Dispersal of Marten and Fisher from Wildlife Refuges

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Abstract
Statistical analysis of trapper fur returns revealed an overflow and a progressive falling off in abundance away from the Chapleau Crown Game Preserve in the case of marten. This could not be proven formally for fisher. However, the data showed marked similarities in pattern for both spp., namely a decline while moving away from the Preserve. A 2d slight peak is caused by a surviving population outside the sanctuary. In 1941 there were relatively high populations of both spp. in the zone adjacent to the Preserve as compared to low ones further remote from it. During the period 1941-1947, remote areas had a more rapid increase in population than the already populated nearer ones. As this increase was greater than expected by the logistic equation of population growth, and as there was no known reason for expecting a differential reproduction, the differential increase is assumed to be partly due to influx. Cyclic fluctuations were noticeable in the relatively low marten and fisher populations observed.

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