Populations to communities

Populations to communities - BSCI 106 Dr. Sara Via Fall...

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BSCI 106 Fall 2009 p. 1 Dr. Sara Via Lecture 10: From Populations to Communities A. But First, More Mutualism/Symbiosis 1. Seed dispersal - Mammal fur - Bird gut - Ant, squirrel cache 2. Mutualism: beneficial for both, not required Examples? 3. Symbiosis: obligatory interaction Examples? 4. Lichens: fungus + alga more than the sum of the parts (check your book for better pic) On To Community Ecology and Succession A. What is a community? An association of interacting populations -Group of species found in a particular area or habitat B. Describing Community Structure 1. Species Richness – How many species are there Who cares? -Lyme disease - Basic questions about natural patterns, i.e., What determines species richness? Why does species richness decrease towards the poles? 2. Species Dominance (or “evenness”) - relative abundance of species in a community Uniform or diverse?? Its important! (Why??) 3. Food webs: Show interdependence, complexity of interactions C. Community Ecology--Who Cares?
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This note was uploaded on 10/05/2009 for the course BSCI 106 taught by Professor Porter during the Fall '08 term at Maryland.

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Populations to communities - BSCI 106 Dr. Sara Via Fall...

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