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Ch. 20 Vocabulary

Vocab.

QuestionAnswer
Predation an interaction between two species in which one species, the predator, feeds on the other species, the prey
Interspecific Competition a type of interaction in which two or more species use the same limited resource
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 in which both organisms derive some benefit
Commensalism one organism benefits, but the other organism is neither helped no harmed
Species Richness the number of different species in an area or community
Species Eveness the relative abundance of each speices
Species-Area Effect a pattern in which the number of species in an area increases as the area increases
Disturbance events that change communities, remove or destroy organisms from communities, or alter resource availibility
Stability the tendency of a community to maintain relatively constant conditions
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
Created by: mlavelle
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