Advertisements
Advertisements
प्रश्न
How are productivity, gross productivity, net primary productivity and secondary productivity interrelated ?
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
What is primary productivity?
Why does primary productivity vary in different types of ecosystems?
What is the primary productivity of an ecosystem and how is it expressed?
Which one of the following ecosystem is most productive in term of net primary production?
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?
Why is the rate of assimilation of energy at the herbivore level called secondary productivity?
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”.
Which of the following is the unit of productivity of an Ecosystem?
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?
