Declining moose population in upper Midwest may be due to climate change June 8, 2012 Minneota - Predator to prey ratio

Minnesota Population Deer Population and Management News Archive

Declining moose population in upper Midwest may be due to climate changeJune 8, 2012 Minneota, Public Radio International PRI
"We've been seeing a long term population decline since 1990," said Seth Moore, director of Biology and Environment for the Grand Portage Band of Chippewa in Minnesota. ... the Chippewa area saw the lowest snow fall numbers in years. ..." "So, in winter, moose tend to exhibit heat stress at 20 degrees Fahrenheit. ... As was the case of the classic study on thepredator-prey system of Isle Royale, wolves, one of the few predators to moose, keep the number of moose down. However, Moore said the number of wolves is closely correlated with the number of deer, and both populations are on the rise. "...we’re also probably getting a little bit of increased predation by wolves as well, just because deer numbers are high," 


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