Notes Lecture 9 - Notes Lecture 8 Population ecology...

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Notes Lecture 8 Population ecology Biological community – an assemblage of interacting species Integrated hypothesis – a community assemblage of closely linked species locked into association by mandatory biotic interactions Individualistic hypothesis – community are loosely organized associations of independently distributed species with the same abiotic requirements Gaia Hypothesis – Earh is “superorganism” with tightly couple feedback loops 1. Competition(-/-) a. Competitive Exclusion – species with same niches cannot coexist b. Resource Partitioning – allows coexistence by different niches c. Fundamental Niche(could ) vs. Realized Niche (Actually) 2. Predation(+/-) a. Coloration: Cryptic = warns b. Batesian mimicry – harmless mimics harmful species c. Mullerian mimicry – harmful mimics harmful species 3. Herbivory(+/-) a. Plant defenses – mechanical, chemical 4. Parsitism(+/-) a. Well-adapted parasites b. Often host specific (Greenland Sharks)
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This note was uploaded on 04/15/2011 for the course BIO 128 taught by Professor Ching during the Spring '11 term at University of Arizona- Tucson.

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Notes Lecture 9 - Notes Lecture 8 Population ecology...

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