The Michigan Department of Natural Resources today announced the results of its 2015 moose population survey in the western moose range of the Upper Peninsula, an important tool in managing the species.
The 2015 population estimate in the western U.P. is 323, compared to an estimate of 451 in 2013. From 1997 to 2007, surveys of prime moose habitat in Baraga, Iron and Marquette counties suggested the U.P.’s moose population was growing at a modest rate of about 10 percent per year. From 2009 to 2013, survey results showed an apparent change in that trend, with the growth rate slowing to about 2 percent per year.
“There is inherent uncertainty with any population survey, and due to the fact that the 2013 and 2015 estimates have some overlap in confidence intervals, the potential remains that the state’s moose population has remained steady rather than declining,” said Chad Stewart, deer, elk and moose management specialist for the DNR. “However, coupled with survey records that show a decrease in the number of moose calves seen with cows this year, it’s quite possible that we’re looking at a considerable drop in numbers.”
Future surveys will be needed to identify any long-term trend for Michigan’s moose population. Other states and provinces have reported declines in moose populations near the southern edge of North America’s moose range, yet other populations are holding steady or increasing. Researchers in Michigan have hypothesized several potential causes for a possible decline of moose numbers in Michigan. Among potential factors: Read more