Primary production

In ecology, primary production is the synthesis of organic compounds from atmospheric or aqueous carbon dioxide. It principally occurs through the process of photosynthesis, which uses light as its source of energy, but it also occurs through chemosynthesis, which uses the oxidation or reduction of inorganic chemical . It is a biological process that cannot proceed unaltered when phytoplankton are removed from their natural surroundings. Artifacts are unavoidable, but many insults to the sampled plankton can be . Need biomass and energy?

Terrestrial primary production supplies organisms with the chemical energy and carbon-containing molecules essential to all life, including ours. Three hundred trout are needed to support one man for a year. The trout, in turn, must consume 90frogs, that must consume million grasshoppers that live off of 0tons of grass.

Bufret Lignende Oversett denne siden …involves two main processes: (1) primary production , in which living organisms form energy-rich organic material (biomass) from energy-poor inorganic materials in the environment through photosynthesis, and (2) secondary production, the transformation, through consumption, of this biomass into other forms. It is a measure of the total rate of production of new biomass. GPP occurs by photosynthesis, a process in which . These plants do not depend on other plants, animals, or insects for their food.

They can make their own with help from the sun, water, and air.

Definition of primary production – the production of raw materials for industry. Daniel Conrad Ogilvie Thornton. This occurs either when natural sources are exploited (for example, in coal mines, crude oil fields, hydro power plants) or in the fabrication of biofuels.

Primary Production in the Ocean. Transforming energy from one form into another, . Integrating conceptually similar models of the growth of marine and terrestrial primary producers yielded an estimated global net primary production (NPP) of 104. Approaches based on satellite indices of absorbed solar radiation . Chavez FP(1), Messié M, Pennington JT. Bruckner, Montana State University. Marine photosynthetic plankton are responsible for . The majority of primary producers are terrestrial plants and microbial life, . All life depends ultimately on primary producers, the organisms which capture the energy in sunlight by photosynthesis.

On lan they are easily recognized as plants. Although marine primary production by coral reefs, mangroves and seagrasses is relatively better-known, the vast majority of primary production in the sea is . I dette nettverket arbeider forskere og planteforedlere sammen om utvelgelse av plantegenetiske ressurser, hovedsakelig fra NordGen, i forhold til realistiske framtidsscenarier. Produksjonen skal måles og miljømessige konsekvenser vurderes.

Studies summarized here were aided by the Biology Branch, Office of Naval Research and the University of Florida.

Appreciation is expressed to .