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| the plotting and interpretation of species abundance along an environmental gradient |
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| a group of species that occupy similar ecological neiches |
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| creates its own food- photosynthesis, chemosysthesis |
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| clements, super organism, organisms in a community form a discrete, complex unit, everything is interconnected, closed communities |
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| gleason, everything happens by chance, tree and mychorrizie relationship by chance, open connunities |
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| intermediate disturbance hypothesis |
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| lots of frequent, less severe disturbances lessens the severity of a big fire- minnich, mexico, no fire supression |
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| Liebig's law of the minimum |
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| growth of pop. limited by limiting resource-the rest don't matter |
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| pop. grows exponentially until reaches carrying capacity K, s-curve |
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| the large population with subpopulations that move within it, habitat matrix |
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| portion of gross primary production that is accumulated within the tissues of autotrophs |
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| nutrients and organic matter originating outside a stream-leaves and sticks etc. |
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| originating within a stream, organic matter produced and nutrients cycled within a stream |
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| (local diversity) the number of species within an area of small habitat |
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| the differences, or turnover, in species from one habitat to another |
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| (regional diversity) the number of species observed in all habitats within a large geographic area that includes no significant barriers to dispersal |
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| an anion formed by the dissociation of carbonic acid, |
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| a.k.a. reciprocal transplant experiment, a research method in which organism from different habitats are grown together in the same place to test for genetic differences in the absence of different environmental influences |
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| competitive exclusion principle |
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| the principle that two or more species cannot coexist indefinitely on the same limiting resource |
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| equilibrium theory of island biogeography |
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| the principle that the number of species on an island represents a balance between the process of c colonization by new immigrant species and the process of extinction of resident species |
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| continuous increase or decrease in a population at a rate that is proportional to the number of individuals at the given time |
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| graph like steps- breeding cycles |
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| the presence of one species increases the probability of another species becoming established |
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| the suppression of one species by the pretense of another |
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| referring to succession, a lack of influence by one species on the presence or absence of another species |
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| potential evapotranspiration |
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| the ammount of water that could be transpired by plants and evaporated from the soil, given the local temp and humidity, if water were not limited |
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| the result of an ionteraction between two species during a successional sequence whose outcome depends on which becomes established first |
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| a graph that displays the abundances of species in a community or sample, usually on a logarithmic scale, ranked from the most common to the rarest |
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| the point at which additional sunlight won't result in additional photosynthesis, and starts to bleach the plant |
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| a characteristic relationship between average plant weight and popiulation density found in plant populatinos that are limited by space or other resources- biomass |
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| a close physical association between two species, usually coevolved, could be mutualistic or parasitic |
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