EFFECTS OF WEATHER ON PRODUCTIVITY AND SURVIVAL OF MOOSE IN NORTHEASTERN ONTARIO
Abstract
Weather has been shown to be an important factor affecting calf production and survival, in many parts of the moose range. This effect has not been demonstrated for Ontario. Winter severity, positive energy period, May rainfall and summer rainfall were compared with calves per female in the kill and percent yearlings in the kill by means of multi-variate analysis. Weather, primarily winter severity, was important in affecting production of calves up to the mid-1960’s. After 1966, the weather variables tested showed no significant relation to calf production. It is likely that disruption of social structure and umwelt through excessive hunting and habitat destruction became more important influences on production, masking any effects of weather.
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