EQUILIBRIUM YIELD
equilibrium yield: translation
the yield in weight taken from a fish stock when it is in equilibrium with fishing of a given intensity, and (apart from effects of environmental variation) its biomass is not changing from one year to the next. Also called sustainable yield, equivalent sustainable yield. Abbreviated as YE or YE. No stock is really in balance with fishing effort because effort cannot be maintained at the same level and the stock is always changing in response to environmental variables