The long term estimated wood yield from forests that can be maintained from a given area in perpetuity under a given management strategy and suite of sustainable use objectives
The amount of a naturally self-reproducing community, such as trees or fish, that can be harvested without diminishing the ability of the community to sustain itself.
The amount of water use that can be sustained indefinitely because of annual replacement by surface water runoff or aquifer recharge.
Sustainable yield refers to the amount of timber that may be harvested from a forest without the forest qualities declining in the long term. It varies over time, as forests grow and change, and is not constant.
The balance between pumping and basin recharge, expressed as the number of acre-feet of water per year that can be pumped from the basin on a long-term average annual basis.
Year-to-year, the number or weight of animals that can be harvested without reducing the stock
catch that can be removed over an indefinite period without reducing the biomass of the stock. This could be either a constant yield from year to year, or a yield that fluctuates in response to changes in abundance.
Catch that can be removed over an indefinite period without causing the stock to be depleted. This could be either a constant yield from year-to-year, or a yield which is allowed to fluctuate in response to changes in abundance.
the maximum quantity of water that may be pumped from a source year after year without damage to the water source.
Amount of harvest (yield) that can be removed from a population while allowing the population to perpetuate itself into the future given average environmental conditions.
Volume of ground water that can be extracted annually from a ground water basin without causing adverse effects.
The sustainable yield of natural capital is the ecological yield that can be extracted without reducing the base of capital itself, i.e. the surplus required to maintain nature's services at the same or increasing level over time. This yield usually varies over time with the needs of the ecosystem to maintain itself, e.g. a forest that has recently suffered a blight or flooding or fire will require more of its own ecological yield to sustain and re-establish a mature forest. While doing so, the sustainable yield may be much less.