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20 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Ecosystem |
Sum of all the organisms living within an areas boundaries and all abiotic factors with which they interact |
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Law of conservation of mass |
Matter and energy can neither be created nor destroyed |
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Primary producers |
Trophic level that supports all other consists of autotrophs |
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Primary consumers |
Herbivores |
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Secondary consumers |
Carnivores that eat herbivores |
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Tertiary consumers |
Carnivores that eat carnivores |
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Detrivores/ decomposers |
Consumers that get energy from detritus |
Detritus: nonliving organic material such as dead organisms, poop, leaves, wood |
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Gross primary production (GPP) |
Total primary production in an ecosystem |
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Net primary production (NPP) |
GPP but without energy being used by primary producers for resperation (R) |
Equation is: NPP=GPP-R |
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Primary production |
Amount of light energy converted to chemical energy by autrophs during a given time period |
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Limiting nutrient |
Element that must be added for production to increase |
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Eutrophication |
Cyanobacteria and algae grow rapidly in response to these added nutrients, reducing the oxygen concentration and clarity in water |
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Acrual evapotranspiration |
Annual amount of water transpired by plants and evaporated from a landscape (usually measured in mm) |
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Secondary production |
Amount of chemical energy in consumers food that is converted to their own biomass during a given time period |
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Production efficiency |
Percentage of energy stored in assimilated food that is not used for resperation |
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Trophic efficiency |
Percentage of production transferred from one trophic level to the next |
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Turnover time |
Amount of time to grow, reproduce and be consumed |
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Green world hypothesis |
Terrestrial herbivores are held in check by a variety of factors |
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Biogeochemical cycles |
Nutrient cycles that involve both biotic and abiotic components |
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Biological magnification |
Accumulated toxins are particularly harmful is that they become more concentrated in successive trophic levels of a food web |
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