is the production of organic compounds from atmospheric or aquatic carbon dioxide, principally through the process of photosynthesis, with chemosynthesis being much less important. All life on earth is directly or indirectly reliant on primary production. The organisms responsible for primary production are known as primary producers or autotrophs, and form the base of the food chain. In terrestrial ecoregions, these are mainly plants, while in aquatic ecoregions algae are primarily responsible. Primary production is distinguished as either net or gross, the former accounting for losses to processes such as cellular respiration, the latter not.
its a production in ecosystem using net. >_<
Well, the formula is: dry mass (of plants)/area (of the place where they were growing)*time (of their growth). Units, for example: gramms/cm2*weeks.
biomass, organic material that can be consumed
Gross Primary Productivity- Total amount of chemical energy stored by photosynthesis. Net Primary Productivity- Remaining energy, which is available to the consumers as food.
light temperature, and precipitation
net
NPP decreases from the equator to the poles as a result of the amount of solar radiation available. Therefore, NPP is more at the equator.
Phytoplankton
primary productivity is defined as the amount of . organic matter produced per unit area over a time period by plant during photosynthesis. and gross primary productivity minus respiration losses is the net primary productivity .
Gross Primary Productivity- Total amount of chemical energy stored by photosynthesis. Net Primary Productivity- Remaining energy, which is available to the consumers as food.
light temperature, and precipitation
net
net
NPP decreases from the equator to the poles as a result of the amount of solar radiation available. Therefore, NPP is more at the equator.
Phytoplankton
The oxygen in the atmosphere is primarily derived from plant respiration
net primary productivity
primary productivity.
Gross primary production consists of the amount of light energy that is converted to chemical energy by photosynthesis per unit of time. This chemical energy is going to two places-- respiration and growth of new biomass. Net primary production omits the energy used in respiration... just the energy going to new plant growth. Mathematically: (R = respiration) NPP = GPR - R
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