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NAME: __________________________ SALMON NOSE DEEP INTO ALASKA ECOSYSTEMS Time to Think 1. A keystone is the central stone in an arch that holds the whole structure together. Scientists describe salmon as a keystone species in many Alaska ecosystems. Using examples from the Alaska Science Forum article #1721, write a definition for keystone species and explain how salmon are a keystone species in Alaska. ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ 2. Think about a world without salmon. What would your community be like? Describe the impact on humans. ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ 3. Describe the impact on other plants and animals if there were no salmon. ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ UNITE US ©2010 - 2012 Geophysical Institute, UAF C-47 Climate Impacts: Salmon
