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
-
1The greenhouse effect and primary productivity in European agro-ecosystems. Proceedings The greenhouse effect and primary productivity in European agro-ecosystems. Proceedingsby Goudriaan, J. (ed.), International Workshop on Primary Productivity of European Agriculture and the Greenhouse Effect eng 5-10 Apr 1990 Wageningen (Netherlands), van Keulen, H. (ed.), van Laar, H.H. (ed.)
Published 1990Texto bibliotecaFAO IT