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15 Cards in this Set
- Front
- Back
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energy flow
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one of the processes in an ecosystem, the 1st law of conservation of energy and the 2nd law of thermodynamics
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chemical cycling
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one of the processes in an ecosystem, conservation of mass
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autotrophs
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primary producer
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herbivore
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primary consumer
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carnivore
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secondary consumer
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detrivores (decomposers)
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consumers that derive their energy from detritus (nonliving organic material)
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primary production
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the amount of light energy converted to chemical energy by autotrophs during a given time period
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limiting nutrients
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nutrients needed for continued growth but are unavailable at times do to their finite quality
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secondary production
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the amount of chemical energy in food converted to new biomass during a given period
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trophic efficiency
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percentage of production transferred from one trophic level to the next and it usually ranges from 5% to 20%
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biochemical cycles
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cycles that involves both biotic and abiotic components for recycling nutrients
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critical load
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the amount of nutrient a plant can absorb without damaging the ecosystem
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eutrophication
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caused by sewage run off, the excessive algal growth that can greatly harm freshwater ecosystems
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biological magnification
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concentrates toxins at higher trophic levels where biomass is lower
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greenhouse effect
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CO2, water vapor, and other greenhouse gasses reflect infared radiation back towards earth
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