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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
How are productivity, gross productivity, net primary productivity and secondary productivity interrelated ?
Why does primary productivity vary in different types of ecosystems?
Write the relationship between productivity, gross primary productivity, net primary productivity, and secondary productivity.
Which one of the following ecosystem is most productive in term of net primary production?
How much of the net primary productively of a terrestrial ecosystem is eaten and digested by herbivores?
Which of the following ecosystems is most productive in terms of net primary production?
Justify the pitcher plant as a producer.
Why are oceans least productive?
The primary productivity in an ecosystem is expressed as ______.
- gm-2 yr-1
- gm-2 yr
- Kcal m-2 yr-1
- Kcal m-2
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.
