CaseStudy_PartI_S09

CaseStudy_PartI_S09 - Ecology Case Study Part I Dr...

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Ecology Case Study – Part I Dr. Hotchkiss: Spring 2009 Name________________________________Discussion Section or Time:__________________ Parts I-A and I-B will BOTH be collected for grading at the beginning of Discussion, Week 14 – April 20-24. Case: Aquatic hitchhikers and promiscuous boaters Background Information: The invasion of exotic species is one of the largest threats facing aquatic ecosystems today. Exotic species have cost the United States over $100 billion in the last 85 years. Zebra mussels are an aquatic invasive species now common in the Great Lakes. The zebra mussel is a fingernail-sized, bottom-dwelling clam that can attach to solid objects, including to one another. Zebra mussels are filter feeders and can filter up to 1 gallon of water per day per mussel. During this process, every particle in the water column is removed and either eaten by the mussels or wrapped in mucus and spit out. First detected in the Great Lakes in 1988, zebra mussels have spread rapidly throughout the five Great Lakes, in addition to many lakes and rivers in surrounding states. As a result, the Wisconsin Department of Natural Resources is concerned about the spread of zebra mussels in the state’s lakes and rivers. Zebra mussels attached to a rock (left; image source: S. N. Schmidt) and a crayfish (right; image source: www.dnr.state.wi.us) .
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Ecology Case Study – Part I Dr. Hotchkiss: Spring 2009 Part I-A. Case Analysis: Please complete prior to Discussion, Week 13 – April 13-17 Note: There are no right or wrong answers for questions 1-3. You will be graded based on your ffort and thoughtfulness in answering the questions. terms or phrases on the first page that seem to be important to understanding
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This note was uploaded on 04/23/2009 for the course BIO 152 taught by Professor Doyle during the Spring '08 term at University of Wisconsin.

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CaseStudy_PartI_S09 - Ecology Case Study Part I Dr...

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