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Chapter 21
Community Ecology
12
Biology
9th Grade
12/09/2009

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Term
Symbiosis
Definition
close interactions
Term
Predation
Definition
a powerful force in a community; one individual captures, kills and consumes another individual
Term
Mimicry
Definition
a harmless species resembles a poisonous or distasteful species
Term
Parasitism
Definition
a species interaction where one individual is harmed while the other individual benefits
Term
Competition
Definition
results from fundamental niche overlap
Term
Mutualism
Definition
a cooperative relationship in which both species derive some benefit
Term
Commenalism
Definition
an interaction in which one species benefits and the other is not affected
Term
Species Richness
Definition
the number of species a community contains
Term
Species Diversity
Definition
relates the number of species in the community to the relative abundance of each species
Term
Succession
Definition
the gradual, sequential regrowth of species in an area
Term
Pioneer Species
Definition
the species that predominate early in succession; small, fast-growing, fast-reproducing
Term
Climax Community
Definition
stable end point of succession
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