Primary production
Primary production
Primary production (/ˈpraɪməri prəˈdʌkʃən/) 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.
Etymology
The term "primary production" is derived from the concept of producing, in the sense of creating or manufacturing. The word "primary" refers to the fact that the process forms the base or the first step of the food chain.
Related Terms
- Photosynthesis: The process by which green plants and some other organisms use sunlight to synthesize foods with the aid of chlorophyll pigments.
- Chemosynthesis: The synthesis of organic compounds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals, typically in the absence of sunlight.
- Carbon dioxide: A colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.
- Organic compounds: Any member of a large class of gaseous, liquid, or solid chemical compounds whose molecules contain carbon.
- Food chain: A hierarchical series of organisms each dependent on the next as a source of food.
External links
- Medical encyclopedia article on Primary production
- Wikipedia's article - Primary production
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