MARAM_IWS_2017_Hake_P10.pdf (620.14 kB)

An example contrasting TAC behaviour under target- and slope-based empirical management procedures

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posted on 07.09.2021, 06:40 by Rebecca A Rademeyer, Doug ButterworthDoug Butterworth
The current OMP for South African hake is, at basis, an empirical MP using a target-based approach, i.e. the TAC is adjusted up or down each year in relation to the extent to which the recent average of a composite index of abundance is above or below a target level (see MARAM/IWS/2017/BG9). That level is a control parameter of the MP which is tuned to provide the desired performance in terms of the trade-off between average catch and risk of undesired biomass reduction.

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Department of Mathematics and Applied Mathematics, University of Cape Town