BIOLOGY 1M03 Lecture Notes - Competitive Exclusion Principle, Interspecific Competition, Intertidal Zone
11 Jun 2013
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Document Summary
Previously, we considered populations of a single species. Interactions among species, such as competitions and consumption can: affect the distribution and abundance of the interacting species, be agents of natural selection and thus affect the evolution of the interacting species. The assemblage of species found in a biological community changes over time and is primarily a function of climate and chance historical events. A biological community consists of interacting species, usually living within a defined area. Because the species in a community interact almost constantly, the fate of a particular population may be tightly linked to the other species that share its habitat. Biologists analyze interactions among species by considering the effects on the fitness of the individuals involved. A relationship between two species that provides a fitness benefit to members of one of the species is a + interaction. Such a relationship that hurts members of one of the species is a interaction.
