Term
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Definition
| effects on predator prey that alter abundance, biomass, or productivity of a population, community, or trophic level across more than one link in the food web |
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Term
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Definition
| trophic position in an ecosystem; for instance, primary producer, primary consumer, secondary consumer, tertiary consumer, ect. |
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Definition
| succession on newly exposed geographical substrates, not significantly modified by organisms, for instance, on newly formed volcanic lava or on substrate exposed during the retreat of a glacier |
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Definition
| succession where disturbance has destroyed a community without destroying the soil; for instance, forest succession following a forest fire or logging |
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Term
| bottom up food web interactions |
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Definition
| the influences of physical and chemical factors, such as temperature and nutrients on ecosystems |
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Term
| top down food web interactions |
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Definition
| the influences of consumers on ecosystems |
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Term
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Definition
| the total amount of energy fixed by all the autotrophs in an ecosystem |
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Term
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Definition
| - the amount of energy left over after autotrophs have met their own energetic needs (gpp minus respiration by primary producers); the amount of energy available to the consumers in an ecosystem) |
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Term
| actual evapotranspiration |
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Definition
| the amount of water lost from an ecosystem to the atmosphere due to a combination of evaporation and transpiration by plants |
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Term
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Definition
| the amount of a particular nutrient stored in a portion, or compartment, of an ecosystem |
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Term
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Definition
| the movement of nutrients between nutrient pools in an ecosystem |
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Term
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Definition
| - a community that occurs late in succession whose populations remain stable until disrupted by disturbance |
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Term
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Definition
| - a series of communities or ecosystems representing a range of ages or times sunce disturbance |
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Term
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Definition
| female chooses which mate she wants (b/w 2 different sexes) |
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Term
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Definition
| individs compete within their sex for mates |
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Term
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Definition
| heat flow (warm to cold) b/w a solid body and a moving fluid |
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Term
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Definition
| heat flow (warm to cold) b/w objects in direct physical contact |
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Term
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Definition
| body temp varies directly with environ: no regulation |
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Term
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Definition
| orgs are limited by nrg and/or nutrients, and so there is selective pressure to acquire and allocate resources in an efficient way |
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Term
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Definition
| fitness resulting “directly” from offspring, and “indirectly” from offspring of relatives (to extent that genes are shared) |
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Term
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Definition
| selection in which individs increase their inclusive fitness by helping increase the survival and reproduction of relatives (kin) that are not offspring |
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Term
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Definition
| reduction in population density as a plant inc. its biomass due to intraspecific competition |
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Term
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Definition
| changes in physical characteristics of a pop due to natural selection resulting in reduced interspecific comp |
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Term
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Definition
| an org that induces disease |
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Term
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Definition
| an org that lives in/on a host. reduces the hosts fitness but doesn't kill it |
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Term
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Definition
| insect whose larvae consume its host and kills it/ equal to predators |
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Term
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Definition
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Term
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Definition
| species richness in a particular area |
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Term
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Definition
| number of species unique to 2 ecosystems being compared |
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Term
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Definition
| species richness in geographical region containing several ecosystems |
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