01:119:115 Chapter Notes - Chapter 54: Monarch Butterfly, Eugene Odum, Ecological Niche

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Scarce: not enough to meet demand of every individual simultaneously: ecological niche a. If an organism"s habitat is it"s address", the niche is the organism"s profession". Eugene odum, ecologist: role of a species w/in structure and funcion of community, use of materials in environment d, all physical, chemical, biological factors needed for survival, health, and reproducion. What an organism is capable of doing and using under ideal circumstances. Lifestyle that an organism actually pursues and resources it actually uses. Diferences btwn fundamental and realized niche due to compeiion limits resources. Community interacions: compeiion, predaion, symbiosis, compeiion, two or more individuals atempt to use the same resource, use by one decreases availability for others c, 2 types: Intraspeciic compeiion btwn members of the same species/populaion ii. 2 species w/ absolutely idenical ecological niches cannot coexist. One species excludes other from part of its fundamental niche. Can coexist if there are non-overlapping parts of niches.

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