Net Primary Productivity Equation

Learn about primary productivity the in efficiency of energy transfer between trophic levels and how to read ecological pyramids. What is an ecosystem.

Calculating Net Primary Productivity Tutorial Youtube

Carbon nutrients are regenerated in the ocean by.

Net primary productivity equation. Net primary productivity is the amount of fixed by photosynthesis that exceeds the respiration demands of the plant and goes into growth. Gross primary productivity gpp and net primary productivity npp. Key differences gpp stands for gross primary productivity while npp stands for net primary productivity.

The clear bottle in step 1 contains 10 mg of oxygen per liter. The productivity of primary producers is referred to as primary productivity. Net primary production npp is the net amount of primary production after the costs of plant respiration are included.

Npp gpp respiration in terrestrial systems npp is often calculated by determining the annual carbon storage. Photosynthesis minus respiration equals npp. Hence the equation for deriving npp is given by.

Therefore npp gpp r net ecosystem production nep is the net amount of primary production after the costs of respiration by plants hetertrophs and decomposers are all included. The formula for productivity is very simple and it can be expressed as output produced divided by input provided. Mathematically it is represented as productivity output input the above formula is the underlying principle for various productivity metrics such as revenue per employee revenue per hour units produced per hour etc.

Google classroom facebook twitter. Npp is equal to the gross primary productivity rate of respiration. Npp gpp r in view of the coronavirus pandemic we are making live classes and video classes completely free to prevent interruption in studies.

The rate of photosynthesis or primary production is 10 5 or 5 mg per liter per hour. Primary productivity is of two types. Gross primary productivity gpp is the rate at which solar energy is captured per unit area in a unit time during photosynthesis.

Flow of energy and matter through ecosystems. Net primary productivity npp or the production of plant biomass is equal to all of the carbon taken up by the vegetation through photosynthesis called gross primary production or gpp minus the carbon that is lost to respiration. Net primary productivity npp is given by gross primary productivity minus respiration loses r.

The dark bottle in step 2 contains 5 mg of oxygen per liter at end of the hour.

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