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Chapter 20 Key Terms

Chapter 20 Key Terms: Community Ecology

QuestionAnswer
predation a relationship btwn 2 species in which one species(predator) feeds on other species(prey)
interspecific competition a relationship btwn 2 species in which both compete for limited resources such that both are negatively affected
symbiosis a relationship in which 2 different organisms live in close association with each other
parasitism a relationship btwn 2 species in which one species(parasite) benefits from the other species(Host) which is harmed
mutualism relationship btwn 2 species in which both benefit
commensalism a relationship btwn two organisms in which on organism benefits and the other is unaffected
species richness number of different species in an area or community
species evenness measure of the relative abundance of each species in an ecological community
species-area effect a pattern in which the number of species in an area increases as the area itself increases
disturbance an event that changes a community by removing or destroying organisms or altering resource availibility
stability the tendancy of a community to maintain a relatively constant structure
ecological succession a gradual process of change and replacement in a community
primary succession succession that begins in an area that previosulyl did not support life
secondary succession the process by which one community replaces another community that has been partially or totally destroyed
climax community a community that, after a process of ecological succession, has reached and generally reasonable state
Created by: GallagherA16
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