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प्रश्न
How are productivity, gross productivity, net primary productivity and secondary productivity interrelated ?
उत्तर
Productivity is the rate of production of biomass at any trophic level at any given interval of time.
Gross productivity: It is the rate of production of organic matter by green plants per unit time per unit area. In other words, it is the total amount of productivity.
Net primary productivity: It is the difference between gross primary productivity and the loss due to respiration.
Secondary Productivity : It is rate of production or formation of new organic matter by consumers especially the consumers of the first order or herbivores.
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संबंधित प्रश्न
What is primary productivity?
Distinguish between primary and secondary productivity.
Why does primary productivity vary in different types of ecosystems?
Explain what does the equation given below show :
NPP = GPP – R
Write the relationship between productivity, gross primary productivity, net primary productivity, and secondary productivity.
How much of the net primary productively of a terrestrial ecosystem is eaten and digested by herbivores?
In the equation GPP − R = NPP R represents ______
Primary productivity varies from ecosystem to ecosystem. Explain?
Justify the following statement in terms of ecosystem dynamics. “Nature tends to increase the gross primary productivity, while man tends to increase the net primary productivity”.
The primary productivity in an ecosystem is expressed as ______.
- gm-2 yr-1
- gm-2 yr
- Kcal m-2 yr-1
- Kcal m-2
