A simple method for estimating MSY from catch and resilience
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The Law of the Sea requires that fish stocks are maintained at levels that can pro- duce the maximum sustaible yield (MSY). However, for most fish stocks, no esti- mates of MSY are currently available. Here, we present a new method for estimating MSY from catch data, resilience of the respective species, and simple assumptions about relative stock sizes at the first and fil year of the catch data time series. We compare our results with 146 MSY estimates derived from full stock assessments and f ind excellent agreement. We present principles for fisheries magement of data-poor stocks, based only on information about catches and MSY.