BIO 102 Lecture Notes - Lecture 4: Interspecific Competition, Competitive Exclusion Principle, Ecological Niche
21 Feb 2017
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Document Summary
Ecological community - all populations of multiple species that interact with one another in a defined area. Community interactions - exert strong evolutionary forces. Between both species a and b - (harms both species a and b) Species a is the consumer, b is the prey (benefits a, harms b) Between species a and b (benefits both a and b) Each species occupies a unique ecological niche. Includes all physical and environmental conditions necessary for survival and reproduction. The ph and salinity of the water or soil. The degree of sun or shade it can tolerate. What they prey upon or parasitize it. Encompasses the entire role that a given species performs within an ecosystem. No two species ever occupy exactly the same ecological niche within the same community. Interspecific competition - occurs between members of different species. Feed on the same things or require similar breeding areas.
