North American moose are dying by the thousands as they struggle with
soaring temperatures and health problems linked to disease and
parasites that thrive in the heat, scientists are finding.
In north east Minnesota alone, moose numbered about 8,000 a decade
ago. Today, the population is down to 3,500. The story is similar
throughout Canada, New Hampshire and Maine.
“All across the southern edge of the range, from Nova Scotia, New
Brunswick, Minnesota, Michigan, all across the southern fringe of their
range, moose numbers are in a significant decline,” Eric Orff, biologist
with the National Wildlife Federation, told PBS.
Biologist Seth Moore has been taking samples of the Minnesota
population since 2009. Of the 80 percent of collared moose that have
died, 40 percent died from an infection known as brain worm, 20 percent
died from a heavy winter tick load that sucks the blood from the
animals, and the rest died from a combination of both, reports Motherboard. Both scourges are linked to warmer temperatures.