| A | B |
|---|
| conditions | physical or chemical attributes of the envionment influence biological processes and population growth |
| resources | substances that can be consumed by an organism |
| fundamental niche | full potential range of conditions and resources a species could theoretically use |
| realized niche | part of fundamental niche that species actually uses |
| generalist species | have broad niches; can live in many different places, eat a variety of foods, and tolerate a wide range of physical conditions |
| specialist species | have a narrow niche; many only be able to live in one habitat, tolerate only a narrow range of climatic and other enviornmental conditions |
| native species | species that normally live and thrive in a particular ecosystem |
| nonnative, exotic, or alien species | species that does not normally live in a particular ecosystem |
| indicator species | species that serve as early warnings that a community or ecosystem is being damaged |
| keystone species | species that play a large role in ecosystem; affect many other species |
| interspecific competition | competition between species |
| predation | member of one species feeds on another |
| symbiosis | relationship where species live together in an intimate association |
| parasitism | when one speices feeds on part of another organism by living in or on the host |
| mutualism | two species interact in a way that positively affects both |
| commensalism | relationship where one species benefits and the other species is not harmed or helped |
| interferece competition | one species limits another's access to a resource |
| exploitation compeition | one species indirectly affects another species access to a resource by obtaining it more quickly or efficientlu |
| resource partitioning | dividing up of scarce resources |
| mimicry | non-poisionous or bad tasting species gains protection by looking like a poisonous or bad tasting species |
| ecological succession | gradual change in species composition over a given time in an area |
| primary succession | gradual establishment of biotic communities in an area that has not been occupied by life before |
| secondary succession | invloves re-establishment of a biotic community in an area where life was present previously |
| disturbance | event in time that disrupts an ecosystem |
| facilitation | when one species makes an area habitable for another species |
| inhibition | when early species hinders the growth and development of later species |
| tolerance | when species of plants are unaffected by others |
| species equilibrium model | says that the number of species on an island is determined by two factors: immigration and extinction |
