Term
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Definition
| all individuals have access to short-term abundant resources, results in "incomplete success" |
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Term
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Definition
| two species in a direct interaction for a resource and one is successful |
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Term
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Definition
| species utilize similar resources in slightly different ways |
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Term
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Definition
| the effect of competition one species has on another |
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Term
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Definition
| indirect effects of two or more species |
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Term
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Definition
| a pivotal species in a community that maintains the basic structure of that community |
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Term
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Definition
| assemblage(s) of species with similar resources or micro-environmental requirements |
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Term
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Definition
| all the component communities merging and interacting |
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Term
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Definition
| an arbitrary unit that we define |
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Term
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Definition
| tendency of a community to reach and maintain an equilibrium condition that is either a steady state or stable isolation |
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Term
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Definition
| the consistency in the number of species in a community |
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Term
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Definition
| the consistency in species composition |
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Term
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Definition
| mathematical mechanism to compare species diversity in a community |
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Term
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Definition
| measure of diversity within a community |
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Term
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Definition
| measure of the division between communities |
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Term
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Definition
| describes division on a regional basis with emphasis on replacement of species over large geographical regions |
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Term
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Definition
| any departure from average conditions |
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Term
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Definition
| the ability of a system to maintain structure and/or function with a potential disturbance |
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Term
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Definition
| the system's ability to recover and return after the disturbance |
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Term
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Definition
| a nonseasonal directional and continuous pattern of colonization and extinction on a site by species populations eventually ending in a climax community that is relatively stable over time |
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Term
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Definition
| the seral replacement of species overtime on substrates that are quickly used up |
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Term
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Definition
| the seral replacement of species overtime driven by external physical or chemical factors |
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Term
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Definition
| the seral replacement of species overtime that is being driven by factors that are internal to the system such as biological interactions and organism's altering the microenvironment |
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Term
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Definition
| the seral replacement of species overtime that is being initiated on newly exposed land surface lacking soil development |
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Term
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Definition
| the seral replacement of species overtime that is initiated on land surfaces with previously developed soil but the vegetation was removed by disturbance |
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Term
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Definition
| the rate at which 1 species lost and a replacement is gained |
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Term
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Definition
| the number of colonizing species occupying the area |
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Term
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Definition
| the rate at which species are lost due to increased interactions, better competitors arriving, and a larger number of new species populations |
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Term
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Definition
| energy cannot be created or destroyed but is transferred from one type to another |
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Term
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Definition
| in any energy transformation, some is going to be lost in the form of head |
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Term
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Definition
| the rate at which radiant energy is converted by photosynthetic activity of producers to organic compounds |
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Term
Gross Primary productivity
(GPP=NPP + Resp.) |
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Definition
| the total rate of photosynthesis including organic matter used up in respiration during the measurement period |
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Term
Net primary productivity
(NPP=GPP - Resp.) |
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Definition
| the rate of storage of organic matter in plant tissues exceeding the respiratory use by a plant in the measuring period |
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Term
Net community productivity
(NCP=NPP - Cons.) |
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Definition
| the rate of storage of organic matter not used up by heterotrophs during the measuring period |
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Term
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Definition
| the rate of energy storage at consumer levels |
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Term
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Definition
| energy transfer from one level to the next |
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