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प्रश्न
Explain what does the equation given below show :
NPP = GPP – R
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उत्तर
Gross primary productivity of an ecosystem is the rate of production of organic matter during photosynthesis. A considerable amount of GPP is utilised by plants in respiration. Gross primary productivity minus respiration losses (R), is the net primary productivity (NPP).
GPP – R = NPP
Net primary productivity is the available biomass for the consumption to heterotrophs (herbiviores and decomposers)
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संबंधित प्रश्न
Write the equation that helps in deriving the net primary productivity of an ecosystem.
What is primary productivity?
Write the relationship between productivity, gross primary productivity, net primary productivity, and secondary productivity.
Secondary productivity is rote of formation of new organic matter by ______.
How much of the net primary productively of a terrestrial ecosystem is eaten and digested by herbivores?
Which one of the following ecosystem has the highest annual net productivity?
Why are oceans least productive?
Why is the rate of assimilation of energy at the herbivore level called secondary productivity?
Primary productivity varies from ecosystem to ecosystem. Explain?
Use the information provided in the table given below to answer the following questions:
| Tropic level | Net Production(KJm-2y-1) | Respiration (KJm-2y-1) |
| Top Carnivore | 50 | 35 |
| Carnivores | 420 | 378 |
| Herbivores | 4490 | 4041 |
| Producers | 45000 | 40,367 |
- Calculate the gross primary productivity.
- Analyze the trend in the Net Production from Producers to Top Carnivore. Give a reason for your observation.
