01:119:115 Chapter Notes - Chapter 54: Paramecium Aurelia, Niche Differentiation, Character Displacement
28 Mar 2016
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Document Summary
Types of ecological niche: fundamental niche, niche potenially occupied by that species potenial used resources, realized niche, niche actually occupied by that species resources actually used. Between fundamental and realized niche result of compeiion and limiing resources. 2 spps with absolutely idenical ecological niches compeing for exact same limiing resources cannot coexist = compeiive exclusion. Raised separately each pop grew rapidly then leveled of. Grown together compete for same resources p. caudatum went exinct. Conclusion cannot coexist permanently in same place. 2 spp with similar fundamental niches but have one or more signiicant in their niches can coexist parial compeiive exclusion = resource pariioning. Evoluion by natural selecion can result in one of spp using dif set of resources coexist. One sp excludes other sp from part of its fundamental niche becomes realized niche: resource pariioning in space. Difereniaion of niches that enables similar spp to coexist in community. Presence of one barnacle species limits niche of another species.
