Lecture 6 - Lecture 6 Jan 15 Species Interactions...

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Lecture 6: Jan. 15 Species Interactions: Competition • Community Ecology • Ecological Niches & Fitness • Consequences of Competition - Competitive Exclusion - Key Field Experiments - Niche Differentiation Discussion Activity This Week Population Ecology Simulations -read handout before you come to discussion (week 3) Check Qwizdom Points on SAMS https://cats.lsa.umich.edu/ Reading: Ch. 53 : 1214-1220 Errors in Textbook: page 1199 in Ch. 52 make sure you can do those problems. .. In box 52.2, which gives details on using exponential growth model, especially equation 52.7 , there are some mistakes in the problems dealing with whooping crane populations – refer to problems #3 and #4 . My corrections follow: In #3 , the text provided is fine, but the ‘helpful’ guidelines they give in telling you what N 0 and N t equal are incorrect . N 0 = 2 (1 breeding pair) and N t should be 50 (25 breeding pairs). You should also know that (lambda)= λ = e r , so by taking natural log of both sides of equation you can find r (they discuss this on page 1198) . The correct answer is t = 4.64 years. In #4 , N 0 2 (1 breeding pair) and N t should be 50 (25 breeding pairs). The answer of 2074 is correct . Ecologists ask questions at a variety of scales. .. organismal population community ecosystem biosphere A community is an assemblage of populations of different species that are interacting and living in a particular area. What is a community?
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This note was uploaded on 12/06/2009 for the course BIO 225 taught by Professor Pavgi during the Spring '08 term at University of Michigan.

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Lecture 6 - Lecture 6 Jan 15 Species Interactions...

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