Definitions for "Production efficiency"
The percentage of energy assimilated by an organism that becomes incorporated into new biomass.
A measure of how efficiently the plants convert the energy of the sun and the soil nutrients into biomass. In this paper it is calculated as the ratio of mean yearly production to standing biomass (the biomass at one point in time). Yearly production is less than standing biomass, thus these figures are less than one.
A situation in which we cannot produce more of one good or service without producing less of some other good or service—production is at a point on the PPF. (p. 66)