Energy Flow and Productivity in Ecosystems

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10 Terms

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Productivity

The rate at which energy is added to the bodies of organisms in the form of biomass

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Biomass

The amount of matter stored in the bodies of a group of organisms

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Gross Primary Productivity (GPP)

The rate at which solar energy is captured in sugar molecules during photosynthesis

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Net Primary Productivity (NPP)

GPP minus the rate of energy used for metabolism and maintenance

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10% Rule

The energy that is 'lost' is used in the form of respiration to make ATP or released as unusable heat between trophic levels

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Ecological Pyramids

Represent the flow of energy from trophic level to trophic level, the amount of energy stored in living organisms, and the number of individuals in each trophic level

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Energy Pyramid

a diagram that shows the energy that is available at each level of an ecosystem

<p>a diagram that shows the energy that is available at each level of an ecosystem</p>
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Biomass Pyramid

Diagram representing the biomass in each trophic level of an ecosystem

<p>Diagram representing the biomass in each trophic level of an ecosystem</p>
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Marine Biomass Pyramid

pyramid might be more top heavy (or even inverted) due to the fast turnover rates of algae, presence of phytoplankton, etc.

<p>pyramid might be more top heavy (or even inverted) due to the fast turnover rates of algae, presence of phytoplankton, etc.</p>
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Number Pyramid

represents the number of organisms at each trophic level

<p>represents the number of organisms at each trophic level</p>