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19 Cards in this Set
- Front
- Back
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populations
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lowest level of ecology; same group of species occupying a particular location.
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demographics
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statistics of population= size density distributiom age structure
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size
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number of individuals
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age structure
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number of individuals of each catagory
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density
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number of individuals in somme specified area
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distribution
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three types:
random- no pattern (rare) uniform- universally distributed- resources would beequally distributed and there would be competion amoung populations clumped- grouped together- resources patchy distribution and social organisms |
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natality
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number of individuals added to a population through reproduction over a period of time. affects size and survival
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mortality
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the rate at which individuals die in a population. affects pop. size and survival.
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community
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group of populations that share a habitat
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influential factors
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...
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niche
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what an organism does where it lives
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fundamental
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one species one tree- ideal
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realized
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diffrent species spread out in diffrent ways over time- actual
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commensalism
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(+,0)
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mutualism
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(+,+)
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predation
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(+,-) results in death of one
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intraspecific
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(-,-)
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interspecific
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varies
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paratism
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(+,-)
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