Initial results of the updated assessment of the South African anchovy resource, using data from 1984 to 2010, were presented by de Moor and Butterworth (2011). This work included the use of a random effects model for adult natural mortality with a fixed standard deviation of 0.2 and 0.5. This approach has now been further extended such that annual autocorrelation can be included and the associated parameters can be estimated, rather than fixed. Similar testing on the use of random effects models for juvenile natural mortality has also been undertaken.
Reference:
de Moor, C. L., & Butterworth, D. S. (2011). Assessment of the South African anchovy resource using data from 1984–2010: variability in natural mortality. MARAM: University of Cape Town.
De Moor, C. L., & Butterworth, D. S. (2011). Assessment of the South African anchovy resource using data from 1984 – 2010: variability in natural mortality University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group. Retrieved from http://hdl.handle.net/11427/18818
De Moor, Carryn L, and Doug S Butterworth Assessment of the South African anchovy resource using data from 1984 – 2010: variability in natural mortality. University of Cape Town ,Faculty of Science ,Marine Resource Assessment and Management Group, 2011. http://hdl.handle.net/11427/18818
De Moor CL, Butterworth DS. Assessment of the South African anchovy resource using data from 1984 – 2010: variability in natural mortality. 2011 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/18818
