The movement model for assessing the South African hake populations which was
presented to last year’s review workshop is simplified by applying the “gravity” method to
model movement. This reduces the numbering of movement parameters estimated from
234 to 68. This results in recent biomass estimates which are slightly more precise and
somewhat lower in both absolute terms and relative to estimated pre-exploitation levels.
Areas for possible future research are discussed briefly.
Reference:
Rademeyer, R. A. (2014). An initial attempt at a spatially structured stock assessment for the South African hake resource including movement based on a gravity model. In 2014 International Fisheries Stock Assessment Workshop Report No. MARAM/IWS/DEC14/Hake P (Vol. 5).
Rademeyer, R. A. (2014). An initial attempt at a spatially structured stock assessment for the South African hake resource including movement based on a gravity model University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group. Retrieved from http://hdl.handle.net/11427/17757
Rademeyer, Rebecca A An initial attempt at a spatially structured stock assessment for the South African hake resource including movement based on a gravity model. University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group, 2014. http://hdl.handle.net/11427/17757
Rademeyer RA. An initial attempt at a spatially structured stock assessment for the South African hake resource including movement based on a gravity model. 2014 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/17757
