UCSF 137 Lecture Notes - Lecture 5: Commensalism, Keystone Species, Competitive Exclusion Principle
11 May 2016
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Document Summary
Be familiar with the dynamics of interspecific competition and how the competitive exclusion principle is realized in a specific niche: intraspecific: with one species. Competition: utilizing the same resource: competitive exclusion principle: no two species. Once species will be able to outcompete the other. Interference: direct, aggressive or destructive action to prevent other species from accessing resources. Can explain how a species fundamental niche can become more specialized in their realized niche. Be able to describe different types of interspecific interactions direct exchanges of energy and materials between 2 species: types: A close association between two species in chain, one or both is dependent upon the relative. Identify the different trophic levels and their role in the flow of energy: see figure 6. 19 in textbook, biomass: all matter derived from living organisms. Can be used to describe store of energy and carbon in an ecosystem. Only 10% of energy is transferred to each trophic level.
