Advertisements
Advertisements
प्रश्न
Write the relationship between productivity, gross primary productivity, net primary productivity, and secondary productivity.
Advertisements
उत्तर
Productivity: It 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. Net primary productivity is the difference between gross primary productivity and respiratory loss.
NPP = GPP - R
Secondary productivity is the rate of formation of organic matter by consumers.
APPEARS IN
संबंधित प्रश्न
Write the equation that helps in deriving the net primary productivity of an ecosystem.
Distinguish between primary and secondary productivity.
What is primary productivity?
Why does primary productivity vary in different types of ecosystems?
Which one of the following ecosystem has the highest annual net productivity?
Which of the following ecosystems is most productive in terms of net primary production?
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.
In an ecosystem if the Net Primary Productivity (NPP) of first trophic level is 100x(kcal m−2) yr−1, what would be the GPP (Gross Primary Productivity) of the third trophic level of the same ecosystem?
Primary productivity in an ecosystem refers to the rate of generation of ______.
