L13 ch 57&58

L13 ch 57&58 - Lecture 13: Chapters 57 & 58...

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Community Ecology Community Ecology Defined Interacting populations of different species living within a given area Interspecific interactions-between different species interactions Intraspecific interactions-within species interactions Competition Resource competition – organisms compete indirectly through the consumption of a limited resource Interference competition – individuals interact directly with one another by physical force or intimidation Ecological niche The sum total of a species’ use of biotic and abiotic resources in its environment Competitive Exclusion 1
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Consequences of Competition - Fundamental vs. realized niche- fundamental (potential niche of a species-any possible niche to live); realized (chooses to live) -Resource partitioning-different types of the same species live in different places ex: warbler birds live in different parts of tree Competition Consequences Character displacement Allopatric populations- closely related species that are geographically separate Sympatric populations- closely related species that are geographically overlapping Predation When a predator species kills a prey species and consumes most or all of it. Beneficial for the predator only (+/-) Predator feeding adaptations Claws, teeth, fangs, stingers, poison Herbivory: Type of predation--Herbivore eats parts of plants or alga. Herbivores have adaptations for eating and digesting plants
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This note was uploaded on 10/28/2011 for the course BIO 181 taught by Professor Milton during the Fall '08 term at N.C. State.

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L13 ch 57&58 - Lecture 13: Chapters 57 & 58...

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