Gaarder and Gran developed a common method of measuring this quantity.
Gaarder and Gran developed a common method of measuring this quantity. This quantity is in the denominator of Eppley and Peterson's f-ratio. The ratio of this quantity to the APAR is called the light use efficiency, and the log of this quantity varies linearly with the leaf area index. One way to measure it is to take one dark bottle and one light bottle, and subtract the difference in oxygen levels between the two. This quantity, which has units of kilograms per meters squared per second, equals the standing crop divided by the turnover rate. To calculate the net amount of this quantity, you must first subtract the amount used for respiration. For 10 points, name this quantity, the rate at which chemical energy is made by autotrophs in photosynthesis and turned into biomass.
Gaarder and Gran developed a common method of measuring this quantity.
net primary production [or gross primary production; or NPP; or GPP; or productivity instead of production; prompt on production; do not accept or prompt on "biomass"]