Primary production
Primary production (economics)}}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 compounds as its source of energy. Almost all life on Earth relies directly or indirectly 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 predominate in this role. Ecologists distinguish primary production as either ''net'' or ''gross'', the former accounting for losses to processes such as cellular respiration, the latter not. Provided by Wikipedia
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5Components of productivity of Mediterranean-climate regions: basic and applied aspects; proceedings Components of productivity of Mediterranean-climate regions: basic and applied aspects; proceedingsby Margaris, N.S. (ed.), International Symposium on Photosynthesis, Primary Production and Biomass Utilization in Mediterranean-Type Ecosystems eng 13-15 Sep 1980 Kassandra (Greece), Mooney, H.A. (ed.)
Published 1981Texto bibliotecaFAO IT -
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7by Lee, H.B. (Primary Production Dept., Singapore (Singapore). Marine Aquaculture Section), FAO, Rome (Italy). Fisheries Dept. eng, European Inland Fisheries Advisory Commission. Workshop on Methodology for Determination of Nutrient Requirements in Fish eng 29 Jun - 1 Jul 1993 Eichenau (Germany), Guillaume, J., Chou, R., Cuzon, G., Heng, H.H., Schuhmacher, A. (ed.), Gropp, J. (ed.), Tacon, A.G.J. (ed.), Hilge, V. (ed.), Rosenthal, H. (ed.)
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8Published 1977Other Authors: “...Primary Production Department, Republic of Singapore...”
book_section bibliotecaUNESCO