BIOL 202 Study Guide - Midterm Guide: Biogeography, Ecotone, Chemosynthesis
1 May 2017
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Species interactions: what is a community? populations of multiple species interacting in a given area - Communities can be categorized by their species or by their properties (spec richness or primary productivity: distinguish between interspecific and intraspecific competition. Interspecific competition: competition between different species: what are the potential outcomes of competition amongst species, competitive exclusion (exclusion of a species from a locality- influences range) Competitive exclusion principle: two species competing for limiting resources (housing, food, etc. ) but species that uses resource most efficiently will eliminate the other: reduction in niche occupancy. Each on the soil they use resources more efficiently on competitive exclusion resulted in the different ranges. When planted separately in both types of soil - both survived. When planted together - one species outcompeted the other. 2 habitats resulted in competitive exclusion: describe the growth of p. aurelia and p. caudatum when they grew alone and when they grew together.
