Biology 2483A Study Guide - Herbivore, Calliphoridae, Character Displacement
17 Jan 2013
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Document Summary
Competition- interaction in which both are harmed because they have to share a limiting resource. Resources- features of environment that can be consumed to depletion. Food, light(plants), water in terrestrial, space etc. Physcial factors- abiotic, not consumed, not resources temp, ph, salinity. Below ground competition- intense when n is limited. Above ground competition- intense when light is limited. No competition, not published show studies that show competition. Exploitation competition- compete indirectly, reduce resources for the other as they use it. Interference competition- compete directly, fight for prey or territory. Even in plants- barnacles- crush & smothering others. Cudzoo vine- grow on to shade others. Results often asymmetrical- one is harmed more than the other (sometimes driven to extinct"n) Competition can occur in distantly related species (as long as competing for the same resource) e. g. rodents vs ants overlapping seed size that they eat.
