Chp. 20

  1. Predation
    An individual of one species, called the predator, eats all or part of an individual of another species, called the prey
  2. Interspecific Competition
    A type of interaction in which two or more species use the same limited resource
  3. Symbiosis
    A close, long-term relationship between two organisms
  4. Parasitism
    A relationship in which one individual is harmed while the other individual benefits
  5. Mutualism
    A relationship in which both organisms derive some benefit
  6. Commensalism
    One organism benefits, but the other organism is neither helped nor harmed
  7. Species Richness
    One characteristic of a community, the number of species in the community
  8. Species Evenness
    A relative measure which is the relative abundance of each species
  9. Species-area Effect
    A pattern of species richness where larger areas usually contain more species than smaller areas do
  10. Disturbances
    Events that change communities, remove or destroy organisms from communities, or alter resource availability
  11. Stability
    The tendency of a community to maintain relatively constant conditions
  12. Ecological Successions
    The gradual, sequential regrowth of a community of species in an area
  13. Primary Succession
    The development of a community in an area that has not supported life previously
  14. Secondary Succession
    The sequential replacement of species that follows disruption of an existing community
  15. Pioneer Species
    The species of organisms that predominate early in succession
  16. Climax Community
    The traditional description of succession is that the community proceeds through a predictable series of stages until it reaches a stable end point
Card Set
Chp. 20
Bio H