What is secondary productivity in biology?
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▶ The rate of biomass formation or energy fixation by heterotrophic organisms, such as grazers and decomposers (see heterotrophic nutrition) called secondary productivity.
These derive all their energy from photosynthetic plants and other autotrophs, either directly or indirectly, and their productivity determines the number of trophic levels and the lengths of the food chainswithin an ecosystem – both of which are likely to be increased by greater secondary productivity.
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