BIOB50H3 Lecture Notes - Lecture 13: Regulate (Song), Senecio, Flea Beetle
7 Nov 2015
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Document Summary
Competition: an antagonistic interaction in which both parties are harmed by their shared use of a limiting resource, reducing their ability to survive, grow, or reproduce. Intraspecific competition: competition between individuals of the same species. Interspecific competition: competition between members of different species: the more limiting the resource, the more intensive the competition. The principle of competitive exclusion: gause"s principle of competitive exclusion: two species that use a limiting resource in the same way cannot coexist indefinitely; one species will outcompete (exclude) the other, driving it to extinction. Competition may reduce abundance and restrict species" resource use. Forms of competition: exploitation: species impact each other by depleting a shared resource. Scramble competition - mice are a shared prey resource for coyotes, foxes, and owls. Interference: species directly interact and fight over a shared resource. Competition and realized niche: realized niche: the range of conditions and resources organism actually uses that occur in nature.
