Energy and Ecosystems

  • Created by: SerenM
  • Created on: 17-01-18 10:25
Producer
Organisms that make their own food (organic molecules) e.g. plants
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Consumer
Rely on producers or other consumers as a food source e.g. animals
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Saprobiont
Break down organic molecules, providing minerals for uptake by plants/producers e.g. bacteria/fungi
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Trophic Level
Each animal level in food chain
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The arrow in food chains
Represents transfer of energy
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Biomass
Total mass of living material gm-2 or gm-3 (depends whether area or volume)
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Calorimetry
Used to estimate chemical energy store in dry mass
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Gross Primary Production (GPP)
The total quantity of chemical energy store, in plant biomass, in a given area/volume
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Net Primary Production
The chemical energy store left after losses to respiration (R) have been accounted for
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NPP equation
NPP=GPP-R
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Net production of consumers equation
N=I-(F+R)
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The amount of energy at each level in a food chain is usually measured in...
kj m-2 year-1
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Efficiency equation
Efficiency= energy available after transfer/energy available before transfer x 100
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Other cards in this set

Card 2

Front

Rely on producers or other consumers as a food source e.g. animals

Back

Consumer

Card 3

Front

Break down organic molecules, providing minerals for uptake by plants/producers e.g. bacteria/fungi

Back

Preview of the back of card 3

Card 4

Front

Each animal level in food chain

Back

Preview of the back of card 4

Card 5

Front

Represents transfer of energy

Back

Preview of the back of card 5
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