FISHERIES.2022.JUN.SWG.WCRL13 (combined poaching trends)_rev.pdf (1.43 MB)
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Overall poaching time series for west coast rock lobster, resulting from combining estimates of illegally exported and locally sold lobsters and compliance time series as at June 2021

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posted on 13.10.2022, 10:09 authored by Susan HollowaySusan Holloway, Doug ButterworthDoug Butterworth

TRAFFIC and Compliance poaching indices are combined to provide an overall time series for poaching in absolute terms. This incorporates penalties on options that imply negative values for local sales of poached lobster, and large changes in the amount poached from year to year. The approach is applied to these indices separated by North and South areas. Two options for overall poaching time series, dependent on the value assumed for current local sales, are put forward, with the intent that they bound the range considered plausible.

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Department of Mathematics and Applied Mathematics, University of Cape Town