In economics, optimum sustainable yield is the level of effort that maximizes the difference between total revenue and total cost. Or, where marginal revenue equals marginal cost. This level of effort maximizes the economic profit, or rent, of the resource being utilized. It usually corresponds to an effort level lower than that of maximum sustainable yield.
In population ecology, maximum sustainableyield or MSY is the largest long-term average yield/catch that can be taken from a species' stock without depressing the species' ability to reproduce.
The maximum sustainableyield is usually higher than the optimumsustainableyield.
The idea of maximum sustainedyield is to decrease population density to the point of highest growth rate possible.
In economics, yield is a measure of the amount of income an investment generates over time (related to return on investment).
Yield is a condition in steel and other metals under tensile stress where it becomes plastic, deformation is large, and will ultimately break.
In the context of nuclear weapons, the yield of a weapon is the amount of energy discharged when the weapon explodes, commonly expressed in tons of trinitrotoluene (TNT) needed to produce the same energy.
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