BIOL208 Lecture Notes - Herbivore, Character Displacement, Competitive Exclusion Principle
9 Apr 2014
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Document Summary
It means that the population growth of both species is 0. If species hurt themselves more than the other species hurts them, there is stable coexistence and vice versa: competition alters distributions, lower limit of chthamalus within intertidal zone affected by presence of. Competition may or may not cause exclusion : community invisibility niche, empty niche hypothesis. High niche overlap = higher interspecific competition. Lower niche overlap = less possibility of exclusion (especially if there are other resources) = higher chance of coexistence: free niche spaces there are resources in this system that aren"t used by other organisms. Allows opportunity for other organisms to take advantage of it (invasion: due to non-complete use of a niche, loss of competition, characteristic of invasive species, competitive exclusion principle, complete competitors cannot coexist , coexistence can occur when: Conditions are not at equilibrium (non-equilibrial dynamics)
