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chapter 20 vocab

chapter 20: community ecology

TermDefinition
climax community a community that after a process of ecological seccession has reached a generally stable state
commensalism a relationship between two organisms in which one organism benefits and the other one is unaffected
disturbance in ecology an event that changes a community be removing or destroying organisms or altering resource availability
ecological succession a gradual process of change and replacement in a community
interspecific competition a relationship between two species in which both species compete for limited resources such that both species are negatively affected by the relationship
mutualism a relationship between two species in which both species benefit
predation a relationship between two species in which one species the predator feeds on the other species the prey
parasitism a relationship between two species in which on species the parasite benefits from the other species the host which is harmed
primary succession succession that begins in an area that previously did not support life
pioneer species a species that colonizes an inhabited area that starts an ecological cycle in which many other species become established
symbiosis a relationship in which two different organisms live in close association with each other
species richness the number of different species in an area or community
species evenness an measure of the relative abundance of species in an ecological community
species area effect a pattern in which the number of species in an area increases as the area increases
stability the tendency of a community to maintain a relatively constant structure
secondary succession the process by which one community replaces another community that has been partially or totally destroyed
Created by: campbellm19
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