BIOL 180 Chapter Notes - Chapter 13: Intraspecific Competition, Allele Frequency, Competitive Exclusion Principle
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Lowers the fitness of both individuals involved o. Energy is put into competition which reduces the amount available for reproducing, foraging, and other activities that increase fitness. Intraspecific (within-species) competition: occurs between members of the same species. This competition intensifies as population"s density increases: major cause of density dependent growth. Interspecific (between-species) competition: occurs when individuals from different species use the same limiting resources, may be directly competing. Lion fighting off a hyena for control over zebra carcass: may be indirectly competing. Finch consumes all the available seeds on a bush, leaving no seeds for species visiting the bush later. Using the niche concept to analyze interspecific competition: Niche: range of resources that the species is able to use or the range of conditions it can tolerate o. Interspecific competition occurs when the niches of the two species overlap o. Individuals competing for the overlapped resource lowers in fitness.
