The Depletion-Corrected
Average Catch
is a method for estimating
sustainable yields for data-poor fisheries.Based on the idea that the average catch has been
sustainable if
abundance has not changed, DCAC makes a correction to that average if
abundance
has increased or decreased (which may be the subject of an educated
guess based
on subjective impressions).The
magnitude of the correction depends on the approximate natural
mortality rate,
which should be about 0.2 or smaller to apply this model.Uncertainty is recognized
in all of the
parameters in the model, and is reflected in the output probability
distribution.
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