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Ecosytem Interactions

Ecosytem Interactions. Biotic Interactions. Competition Predation Symbiosis. Competition. The interaction between two or more organisms for the same resource in a given habitat. Ex. Male mountain goats who compete to mate. Competition.

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Ecosytem Interactions

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  1. Ecosytem Interactions

  2. Biotic Interactions • Competition • Predation • Symbiosis

  3. Competition • The interaction between two or more organisms for the same resource in a given habitat. • Ex. Male mountain goats who compete to mate.

  4. Competition • For similar species to coexist in an area, they must have slightly different niches

  5. Predation • Occurs when one organism eats another organism to obtain food. • Many animals use camouflage to avoid predators.

  6. Predation • Some species use mimicry to avoid predators. • Ex. The viceroy butterfly looks like the monarch. Both taste foul and they have a greater change of not being eaten because their predators avoid them.

  7. Symbioisis • Close interaction between two different species • Three types • Mutualism • Commensalism • Parasitism

  8. Mutualism • Both species benefit fro the partnership • Ex. Leaf cutter ant and the fungus

  9. Commensalism • One species benefits fron a relationship with another species without harm or benefit to the other . • Ex. Bird building a nest in a tree

  10. Parasitism • When species benefits at the expense of another species.

  11. Charcteristics of Populations • Eventually the number of births and deaths in a population balance out. • The carrying capacity is the maximum number of individuals of a population that an ecosystem has resources to support.

  12. Factors that affect Populations in Ecosystems • A limiting factor is an environmental factor that prevents an increase in the number of organisms in a population. • Abiotic: water, sunlight, fires, logging, droughts • Biotic: predators, competition for resources, disease

  13. Videos • http://www.youtube.com/watch?v=D1aRSeT-mQE • http://www.youtube.com/watch?v=zSmL2F1t81Q&feature=fvwrelhttp://www.youtube.com/watch?v=KrWk2g-IMkE&feature=related

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