Bio1_03_Communities - 1 2 3 4 5 6 1 2 7 8 9 10 Review...

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1 Review Questions 1. What is a group of the same species in a given area called? 2. Give examples of organisms with a Type I survivorship curve. Type II? Type III? 3. Give examples of density-dependent growth limiting factors. Density-independent? 4. What does a J-shaped curve represent? S-shaped? Overview – Community structure – Community interactions – Community development – Energy flow in ecosystems – Biogeochemical cycles •The water cycle •The carbon cycle •The phosphorus cycle •The nitrogen cycle Community Ecology • Characteristics of community structure – Species richness •List of species composition – Species diversity •Species richness •Relative abundance (evenness) Community Structure Exercise 1 • Think, Pair, Share • Topic: What is the tree species richness of the two forests below? Which has greater species diversity? Why? – 76 yellow poplars, 1 American elm, 1 sugar maple – 26 yellow poplars, 30 American elms, 22 sugar maples Island Biogeography • Species diversity – Distance from mainland – Size of island • Implications for conservation Exercise 2 • Think, Pair, Share • Topic: Identify which of each pair of islands should have the highest biodiversity? – 100 m 2 island 10 miles from the mainland vs. 100 m 2 island 100 miles from the mainland – 100 m 2 island 100 miles from the mainland vs. 1000 m 2 100 miles from the mainland – 100 m 2 island 10 miles from the mainland vs. 10 m 2 island 100 miles from the mainland Community Interactions • Habitat • Ecological niche •Secure & use resources – Fundamental niche – Realized niche •Why? Feeding Niches for Wading Birds
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This note was uploaded on 01/12/2012 for the course BIOLOGY 1 taught by Professor Teresafinnern during the Fall '11 term at Riverside Community College.

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Bio1_03_Communities - 1 2 3 4 5 6 1 2 7 8 9 10 Review...

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