scholarly journals Detection of microcystin and other cyanotoxins in lakes at Isle Royale National Park, Pictured Rocks National Lakeshore, and Sleeping Bear Dunes National Lakeshore, northern Michigan, 2012–13

2017 ◽  
Author(s):  
Lori M. Fuller ◽  
Angela K. Brennan ◽  
Lisa R. Fogarty ◽  
Keith A. Loftin ◽  
Heather E. Johnson ◽  
...  
Keyword(s):  
National Park ◽  
Isle Royale ◽  
Isle Royale National Park ◽  
Northern Michigan

Moose Browsing and Soil Fertility in the Boreal Forests of Isle Royale National Park

Ecology ◽  
1993 ◽  
Vol 74 (2) ◽  
pp. 467-480 ◽  
Author(s):  
J. Pastor ◽  
B. Dewey ◽  
R. J. Naiman ◽  
P. F. McInnes ◽  
Y. Cohen
Keyword(s):  
Soil Fertility ◽  
Boreal Forests ◽  
National Park ◽  
Isle Royale ◽  
Isle Royale National Park ◽  
Moose Browsing

scholarly journals Injury Patterns at Isle Royale National Park: An Epidemiologic Review of Injuries and Illnesses Sustained in a Remote Environment

2015 ◽  
Vol 26 (1) ◽  
pp. 83-88 ◽  
Author(s):  
Kathleen D. Saxon ◽  
Jenna M.B. White ◽  
Mary M. Eddy ◽  
Daniel L. Albertus ◽  
Benjamin S. Bassin
Keyword(s):  
National Park ◽  
Injury Patterns ◽  
Isle Royale ◽  
Isle Royale National Park ◽  
Remote Environment

Seedbed and canopy cover effects on balsam fir seedling establishment in Isle Royale National Park

1996 ◽  
Vol 26 (5) ◽  
pp. 782-793 ◽  
Author(s):  
Brian E. McLaren ◽  
Robert A. Janke
Keyword(s):  
Seedling Establishment ◽  
National Park ◽  
Seedling Survival ◽  
Canopy Cover ◽  
Balsam Fir ◽  
Isle Royale ◽  
Isle Royale National Park ◽  
Rotten Wood ◽  
The Difference ◽  
Overwinter Mortality

While balsam fir (Abiesbalsamea (L.) Mill.) dominated forests are vanishing from the southwest end of Isle Royale National Park, Michigan, renewal of fir stands is occurring on the northeast end. We speculate that the difference is related both to severe browsing by moose (Alcesalces L.), and to the frequency of disturbances like fire and windthrow. A survey of 24 stands and in situ experimentation on Isle Royale show that balsam fir seedling survival is optimal under 40–79% canopy cover. Late-season and overwinter mortality in 1-year-old seedlings is highest under >80% canopy cover, while germination is lowest under <40% cover. We also rank germination substrates by "preference ratios," and by comparing the overwinter survival of young fir seedlings on five natural media. We find best performance on hypnaceous moss, variable survival success on rotten wood, and highest mortality on broadleaf litter. However, ample seedling densities occur on the southwest end of the island, and the failure of fir to reach the overstory in this area is apparently not related to poor seedling establishment.

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