BIO 2129 Lecture Notes - Lecture 11: Interspecific Competition, Intraspecific Competition, Intertidal Zone
21 Oct 2016
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Document Summary
Abiotic factors can affect the distribution and abundance of organisms. Disturbances like volcano eruptions that sterilize the land. Interspecific or intraspecific interactions strongly influence individuals and the distribution and abundance of species. Niche = set of resources that can be used by a species. Aspects of the niche define the species niche. Competition between species creates differences between the fundamental niche (without biotic factors) and realized (actual) nice of the species. Niche is where it can tolerate, the more niche overlap, more competition. Cornell (1961) demonstrated that interspecific competition between barnacles affected their distribution in a marine intertidal. Ecology page 1 between barnacles affected their distribution in a marine intertidal zone. Barnacles shell things that latch on to the rocks that are open at high tide (under water) and closed when in air. Black is adults grey is sources of mortality. Predation, but it isn"t as effective, maybe it"s harder to kills. Two species with identical niches cannot coexist indefinitely.
