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Ecosystem Productivity
Ecological Efficiency- The proportion of consumed energy that can be passed from one trophic level to another.
Gross Primary Productivity- A measure of the total amount of solar energy that the producers in the system capture via photosynthesis over a given amount of time.
Net Primary Productivity- The energy captured minus the energy respired by producers.
The amount of energy available in an ecosystem determines how much life it can support.
The NPP of ecosystems ranges from 25 to 50 percent of GPP or it can be as little as 0.25 percent. net primary productivity= gross primary productivity- respiration by producers.
WE can determine the rate of photsynthesis by measuring the compounds that participate in the reaction.
Productivity- Measures the rate of energy production over a span of time.
Standing Crop- The amount of biomass present in an ecosystem at a particular time. Measures the amount of energy in a system at a given time.
About 1% of solar energy that reaches the producers in an ecosystem is converted into chemical energy via photosynthesis.
Biomass- the total mass of all living matter in a specific area.
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