Which term describes the total primary production of an ecosystem?

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Multiple Choice

Which term describes the total primary production of an ecosystem?

Explanation:
Total primary production is the amount of carbon fixed by photosynthesis in an ecosystem per unit area per unit time before any plant respiration losses. This is called gross primary production. It captures all the energy captured by photosynthesis, whereas net primary production is what remains after plants use some of that energy for their own metabolism (respiration). Net primary productivity is often used interchangeably with NPP, describing the rate of biomass accumulation available to herbivores, but it does not represent the total gross production. The term productivity alone is too vague to specify whether we’re talking about total production or net accumulation.

Total primary production is the amount of carbon fixed by photosynthesis in an ecosystem per unit area per unit time before any plant respiration losses. This is called gross primary production. It captures all the energy captured by photosynthesis, whereas net primary production is what remains after plants use some of that energy for their own metabolism (respiration). Net primary productivity is often used interchangeably with NPP, describing the rate of biomass accumulation available to herbivores, but it does not represent the total gross production. The term productivity alone is too vague to specify whether we’re talking about total production or net accumulation.

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