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Presenters for technical presentations are either the primary author (the first name listed in the abstract), or are indicated with an asterisk next to their name. 

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Monday, February 6 • 3:40pm - 4:00pm
Technical Session. The Structure of Large Mammal Communities Facing Climate Change in Apostle Islands National Lakeshore, USA

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AUTHORS: Michael Wheeler, Maximilian Allen, Regan Dohm, Bryn Evans, Emily Iehl, Marcus Mueller, Brittany Peterson, Timothy Van Deelen, Beth Wojcik - University of Wisconsin-Madison; Shawn Crimmins, University of Wisconsin-Stephens Point; Erik Olson, Northland College; Travis Bartnick, Kenneth Pemble, Julie Van Stappen - National Park Service

ABSTRACT: Mammals move between islands within archipelagos by swimming or crossing over ice in winter. Climate-change induced declines in ice cover on Lake Superior foreshadow changes in the population and community dynamics of species inhabiting this Great Lake’s island archipelagos. While Isle Royale presents a classic study of predator-prey and island biogeography theory, few studies examine the effects of climate change on island mammal communities in the upper Great Lakes region. We initiated a long-term camera trap study in the Apostle Islands National Lakeshore (APIS) in order to investigate the implications of declining ice cover on large mammal communities. We deployed camera traps in September 2014 to inventory the mammal species on Stockton Island. After detecting the presence of Wisconsin’s only state endangered mammal, the American marten (Martes americana), our focus expanded to deployment and maintenance of camera traps on additional islands throughout the APIS. This study presents preliminary data on the mammalian carnivore populations of the APIS from 2014-2016. We tested how distance from mainland, island size, island habitat, human activity, and the presence of co-occurring predator species structured mammalian carnivore communities. The resultant data show how these communities may be affected by island biogeography, as well as impending climate change. 

Monday February 6, 2017 3:40pm - 4:00pm CST
Grand Ballroom D