Primary productivity
noun
a measure of the rate at which new organic matter is developed through photosynthesis and chemosynthesis in producer organisms based on the oxygen released and carbon taken in; the transformation of chemical or solar energy to biomass
Examples
Most primary productivity occurs through photosynthesis, where green plants convert solar energy, carbon dioxide, and water to glucose and eventually to plant tissue.
Read Also:
- Primary pulmonary lobule
primary pulmonary lobule n. A unit of pulmonary tissue that includes a bronchiole, alveolar ducts, sacs, and alveoli. Also called respiratory lobule.
- Primary-quality
noun, Epistemology. 1. any of the qualities inherent in an object, namely quantity, extent, figure, solidity, and motion or rest.
- Primary-rainbow
noun 1. the most commonly seen rainbow, formed by light rays that undergo a single internal reflection in a drop of water.
- Primary rate interface
(PRI) A type of ISDN connection. In North America and Japan, this consists of 24 channels, usually divided into 23 B channels and 1 D channel, and runs over the same physical interface as T1. Elsewhere the PRI has 31 user channels, usually divided into 30 B channels and 1 D channel and is based […]
- Primary reaction
primary reaction n. See vaccinia.