A clipping study on Isle Royale
indicated that the site-dependent survival and growth of balsam fir were related to suppression brought about by severe browsing in previous years (McLaren 1996).
In part II, he travels more widely offering interesting observations of Colorado, Wisconsin, the North Cascades, the Great Lakes including Isle Royale
, the Porcupine Mountains wilderness, and New York at Niagara Falls.
On Isle Royale
, an island in Lake Superior, rising winter temperatures and a disease outbreak caused wolf populations to decline and the number of moose to surge, leading to a decline in balsam fir trees.
For example, in the Isle Royale
simulation, students are asked to predict whether increasing the food supply will help stabilize the fluctuations of the moose population; then, after running the simulation, they must compare their prediction with the output of the model.
in his wolf research work on Lake Superior's Isle Royale
for some four decades.
In which Great Lake is Isle Royale
National Park located?
Island Folk: The People of Isle Royale
" is a complete history and examination of the people of Isle Royale
Park Ranger Anna Pigeon joins the three other members of the winter study team and two scientists from Homeland Security on Isle Royale
in Lake Superior to observe the behavior of the wolves there.
Part of a third-generation commercial fishing family from Isle Royale
, Sivertson grew up helping his father harvest lake trout, whitefish and herring.
One national parks study found higher levels of a particular stress hormone among wolves at Voyageurs National Park in Minnesota (where snowmobiles are common) compared with Isle Royale
National Park in Michigan (where the machines are banned).
New data from Michigan Technology University shows that moose numbers on Isle Royale
are down to 450, the lowest population in 50 years.
And on Lake Superior's Isle Royale
in northern Michigan, a one-time population of 2,000 moose has fallen to 450, says Rolf Peterson.