CH 53
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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species richness | number of species in a community
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relative abundance | how many of a species vs how many of another
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species diversity | considers species richness and relative abundance
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individualistic hypothesis | species live together because of similar abiotic requirements
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interactive hypothesis | species live together because of positive biotic interactions
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coevolution | a change in one species forces a change in another species
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predation | a predator eats its prey
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parasitism | predators live off their prey without killing them outright
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parasitoidism | insects lay eggs inside a host
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herbivory | animals eat plants
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cryptic coloration | camouflage
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aposematic coloration | warning colors to defend from predators
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mimicry | superficial resemblance to another species
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Batesian mimicry | harmless species mimics a harmful one
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Mullerian mimicry | two or more harmless species resemble each other
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parasite | predator who feeds off of a host
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host | organism fed on by a parasite
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endoparasite | live inside a host
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ectoparasite | feeds on the external surface of a host
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competitive exclusion principle | two species with similar needs cannot exist in the same place
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ecological niche | sum of an organisms use of biotic and abiotic resources in its environment
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realized niche | resources a population uses collectively
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fundamental niche | set of resources an organism theoretically could use
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resource partitioning | use resources in different ways
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symbiosis | species living together
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parasitism | one benefits, one is harmed (+/-)
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commensalism | one benefits, one unaffected (+/0)
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mutualism | both parties benefit (+/+)
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keystone species | species that have a very strong impact on the community structure
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exotic species | an introduced species
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stability | maintaining an equilibrium
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disturbances | events that damage communities
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ecological succession | transition in species over time
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primary succession | first transitions
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secondary transitions | established communities change
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dynamic equilibrium hypothesis | species diversity depends on disturbances
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recruitment | change in community structure due to disturbances
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intermediate disturbance hypothesis | diversity is greatest where disturbances are moderate in both frequency and severity
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