Term
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Definition
| the role of the organism int he ecological system |
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Definition
| important in cycling elements through the ecosystem |
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Term
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Definition
| the place or physical setting in which an organism lives |
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Term
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Definition
heterotrophs
feed on other organisms and their remains |
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Definition
heterotrophs
important "recycling" function |
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Definition
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Term
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Definition
photoautotrophs
responsible for fixing organic carbon |
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Term
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Definition
| energy flux and cycling of nutrients |
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Definition
| interaction among population |
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Definition
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Definition
| survival and reproduction the unit of natural selection |
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Term
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Definition
| the study of all the complex interrelationships |
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Term
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Definition
| listing of an organism's idealized requirements |
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Term
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Definition
| shrunken version of fundamental niche, this is because other organisms may be living there also and so their niche requirements may be overlapping |
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Term
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Definition
space (vegetation
height), body size, food type and
active period |
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Term
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Definition
| total number of species in a given area |
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Term
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Definition
| uniformity in abundance of species |
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Definition
| measures where the contribution of each species is weighted against its relative abundance |
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Term
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Definition
| the proportion of the total number of individual in a community that belongs to a particular species |
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Term
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Definition
measures the probability two individuals randomly selected from a sample will belong to the same category
D = 1/? pi(squared)
The value of D is the probability that two randomly
selected individuals in the zone belong to the
same category.
D ranges from 0 to 1.
The smaller D is, the greater the diversity |
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Term
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Definition
measures the uncertainty of a category in a certain set
it is a measure of evenness
H = -? (p i * loge pi )
H can range from 0 to 1
Low diversity areas will have an H value closer to 0
Higher diversity (and more “even”) areas will have a
value closer to 1 |
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Term
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Definition
| the dimension in space or time over which variation is perceived |
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