The stock assessment approach for all four islands of the Tristan da Cunha group is to use an age-structured production model (ASPM) to fit to catch, longline standardised CPUE and catchat-length (CAL) data. The models consider only catches from 1990, i.e. models are initiated in 1990. The method for setting up the initial population age structure in 1990 is given below.
Reference:
Johnston, S. J., & Butterworth, D. S. (2011). The Age-structured Production Modelling approach for assessment of the Rock Lobster Resources at the Tristan da Cunha group of islands.MARAM/TRISTAN/2011/FEB/02
Johnston, S. J., & Butterworth D, S. (2011). The age-structured production modelling approach for assessment of the rock lobster resources at the Tristan da Cunha group of islands University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group. Retrieved from http://hdl.handle.net/11427/18714
Johnston, Susan J, and S Butterworth D The age-structured production modelling approach for assessment of the rock lobster resources at the Tristan da Cunha group of islands. University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group, 2011. http://hdl.handle.net/11427/18714
Johnston SJ, Butterworth D S. The age-structured production modelling approach for assessment of the rock lobster resources at the Tristan da Cunha group of islands. 2011 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/18714
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