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video. Community Ecology. Community Ecology. Community all the organisms that live together in a place interactions Community Ecology study of interactions among all populations in a common environment. To answer: In what way do these populations interact?. Niche & Habitat.

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  1. video

  2. Community Ecology

  3. Community Ecology • Community • all the organisms that live together in a place • interactions • Community Ecology • study of interactionsamong all populations in a common environment To answer: In what way do these populations interact?

  4. Niche & Habitat • ECOLOGICAL NICHE~ the sum total of an organism’s use of biotic and abiotic resources in its environment; its “ecological role” Realized niches High tide • Habitat- is an area where an organism lives. Species 1 Low tide Chthamalus sp. Species 2 Fundamental niches Semibalanus sp.

  5. Interspecific interactions • Community interactions • parasitism(-/+) • commensalism(+/0) • barnacles attached to whale • mutualism(+/+) • Water buffalo and Egret

  6. Parasitism • In a parasitic relationship, one organism benefits (parasite) while the other organism is harmed (host) • Examples-fleas, ticks, tapeworm, mosquito

  7. Commensalism • In commensalism, one organism benefits, while the other is not affected • Examples – spanish moss growing on trees, or barnacles growing on whales • commensalism example

  8. Mutualism • In a mutualistic relationship, BOTH organisms benefit • Examples – lichen (algae and fungus), pollinators (insects, bats, birds, etc) • Mutualism video

  9. Symbiotic Interactions • Symbiosis is a close ecological relationship between the individuals of two (or more) different species.

  10. Symbiosis mutualism +/+ commensalism Commensalism +/0 +/- Parasitism

  11. What relationship is this?

  12. Activity – Community Interactions • Groups of three • Answer the questions • Symbiotic interactions include: • Commensalism • Mutualism • Parasitism • Be prepared to share 15 minutes

  13. RECAP!! • I will give you three separate answers and you must give me a QUESTION that fits the answer. • A close ecological relationship between the individuals of two (or more) different species. • A mosquito biting into a human’s arm • Relationship in which one organism benefits, but the other is neither helped nor harmed

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