SI4 - SI Wednesday 5:01 PM 1 Population o Single species...

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Wednesday, April 22, 2009 5:01 PM 1. Population o Single species and do interbreed 2. Community o More than one population living together 3. Ecosystem o Abiotic factors Non living Water Nutrients Minerals Shelter landscapes o Biotic Living Predators Prey 4. Density Independent o Not affected by size of population o Weather, fires, hurricanes, natural disturbances o Intermediate Disturbance Hypothesis Relationship between species richness & intensity and frequency of disturbances. Parabolic arc. If low disturbances, competitive ones win. If high intensity of disturbances, organisms that establish themselves quickly will dominate. 5. Density Dependent o Depends on number of organisms 6. Symbiosis o Mutualism + + Commensalism + 0 Parasitism / Predation + - o Parasitism / Predation Lynx/Hare model. Graph follows relatively closely. o Commensalism Birds nest in tree. 7. Trophic Levels
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This note was uploaded on 11/05/2011 for the course BIOL 101 taught by Professor Hogan during the Fall '08 term at UNC.

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SI4 - SI Wednesday 5:01 PM 1 Population o Single species...

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