Ch.20 vocab
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 | the number of different species in an area or community
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| species evenness | the relative abundance of each species
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| species-area effect | a pattern in which the number of species in an area increases as the area increases
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| disturbance | are events that change communities, remove or destroy organisms from communities, or alter resource availability
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| stability | is the tendency of a community to maintain relatively constant conditions
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| ecological succession | a gradual process of change and replacement in a community
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| primary succession | succession that begins in an area that previously did not support life
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| secondary succession | the process by which one community replaces another community that has been partially or totally destroyed
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| pioneer species | a species that colonizes an uninhabited area and that starts an ecological cycle in which many other species become established
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| climax community | a final, stable community in equilibrium with the environment
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