Lec 23 - Lec. 23 Ecological Communities BIS2B, Fall 2009...

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1 Lec. 23 Ecological Communities BIS2B, Fall 2009 Ecological community an assemblage of populations of different species, interacting with one another.
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2 Ecological Communities Succession after disturbance. Interspecific Competition Predation Decomposition Food Webs Types of Direct Interspecific Interactions Table 8e, p 1189. And Neutralism (0/0) Many, many sets of species in ecological communities have no effect.
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3 Succession after disturbance. Asymptotic accumulation of number of species, kinds of species, increasing size of species, nutrients, and physical conditions . S Time Treefall in tropical rainforest from the Video Planet Earth, at about 5 minutes in. http://www.youtube.com/watch?v=CMkF5y5yocw&feature=related
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4 Disturbance is part and parcel of nature. “Dead Forests” resulting from Tsunami
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And, Human activities greatly increase potential for severe disturbance. Example, severe flooding on heavily populated Asian Shores.
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This note was uploaded on 04/21/2010 for the course BIS 2C BIS 2C taught by Professor Rizzo during the Winter '09 term at UC Davis.

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Lec 23 - Lec. 23 Ecological Communities BIS2B, Fall 2009...

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