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20.1: Species Interactions (Part II)

20.1: Species Interactions (Part II). Competition and predation are two important ways in which organisms interact . Competition - occurs when two organisms fight for the same limited resources (2 types).

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20.1: Species Interactions (Part II)

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  1. 20.1: Species Interactions(Part II)

  2. Competition and predation are two important ways in which organisms interact.

  3. Competition- occurs when two organisms fight for the same limited resources (2 types)

  4. Competition- occurs when two organisms fight for the same limited resources (2 types) • Intraspecific competition - competition between organisms of same species • Example: Zebras fighting for mates

  5. Competition- occurs when two organisms fight for the same limited resources (2 types) • Intraspecific competition - competition between organisms of same species • Example: Zebras fighting for mates • Interspecific competition- competition between different species • Example: Different types of barnacles compete for rock space

  6. Interspecific competition LEADS TO…. • Competitive exclusion- when two species are competing for same resources and one species will be better suited to the niche • Two outcomes: • other species will be pushed into another niche (niche partitioning) • OR become extinct  

  7. niche partitioning- dividing of niche by two competing species (e.g. top or tree, or bottom of tree)

  8. 2. Predation- process by which one organism captures and feeds upon another organism. 

  9. Class Work • Community Interactions Chart and Scenarios

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