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19 Cards in this Set
- Front
- Back
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Trophic Relationships |
talking about dividing species in a community into trophic levels depending on their main source of nutrition |
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Primary Producers |
Support all other feeding levels by using photosynthesis to convert sunlight energy into sugars. (Autotrophs) |
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Primary Consumers |
(Heterotrophs) Herbivores- eat plants or algae |
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Secondary Consumers |
Carnivores that eat herbivores |
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Tertiary Consumers |
Carnivores that eat secondary consumers |
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Food Chain |
pathway along which food is transferred from producers to consumers |
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Primary Net Productivity |
-The amount of light converted to chemical energy by autotrophs in a given time period.
-Because you have to subtract what the organisms use for cellular respiration- measure net primary productivity
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Biomass |
weight of vegetation added to the ecosystem per unit area per unit time |
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Water cycle |
Evaporation, Condensation, Precipitaion |
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Carbon Cycle |
is main component of all organic compounds. |
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CO2 |
used by plants for photosynthesis |
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C6H12O6 |
glucose |
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Nitrogen Cycle |
the series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation and decomposition. |
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NH4+ |
nitrogen fixation |
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NO3- |
nitrification |
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Nitrogen Fixation |
second way that N2 can enter the ecosystem |
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Biological Magnification |
Occurs when a substance becomes more concentrated within each trophic or feeding level. |
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DDT |
-Insecticide used to kill mosquitoes and other pests. Banned in 1971 in the US. -It is lipid soluble and becomes stored in fat. It is still being found in human breast milk from individuals that weren't born until after it was banned. |
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Secondary productivity |
Rate at which consumers incorporate the chemical energy into their own biomass. |
