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Vocabulary

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Term
Definition
predation   an interaction between two species in which one species, the predator, feeds on the other species, the prey  
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  
symbiosis   a relationship in which two different organisms live in close association with each other  
parasitism   a relationship between two species in which one species, the parasite, benefits from the other species, the host, which is harmed  
mutualism   a relationship between two species in which both species benefit  
commensalism   a relationship between two organisms in which one organism benefits and the other is unaffected  
species richness   the number of different species in an area or community  
species evenness   a measure of the relative adundance 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 increases  
disturbance   in ecology, an event that changes a community by removing or destroying organisms or altering resource availability  
stability   the tendency 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 previously did not support life  
secondary succession   the process by which one community replaces another community that has been partially or totally destroyed  
pioneer species   a species that colonizes an uninhabited area and that starts an ecological cycle in which many other species become established  
climax community   a final, stable community in equilibrium with the environment  


   






 
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Created by: FarlowA20