Process based CPUE models
Project: Process based CPUE models
Project Code: SAM2004/01
Start Date: 1 October 2004
Completion Date: 30 September 2005
To develop techniques to improve stock assessments of harvested fish stocks.
To develop and test the effectiveness of process-based CPUE models.
General linear models (GLM) are routinely used to provide catch-per-unit-effort (CPUE) indices of relative abundance for stock assessment purposes. However, it may make more sense, for a specific fishery, to model the processes within the fishery and develop a GLM model or not as appropriate. Certainly, when a GLM model is found not to adequately fit a data set it is sensible to try alternative models before abandoning the CPUE data as a means of obtaining a relative abundance index.
This project is aimed at developing process-based CPUE models and testing their effectiveness at providing relative abundance indices. One or two case studies should be undertaken and the performance of a variety of CPUE models evaluated.
All the objectives in this project are consistent with the Fisheries Resources goal in the Ministry of Fisheries Strategic Research Directions document.
Cost Recovery Information:
The percentage allocation for this project will be attributed to the following Fishstocks according to rule 9.2 of the Fisheries (Cost Recovery) Rules 2001:
All these deepwater stocks: CDL, OEO, ORH, RIB
All these middle depth stocks: BAR, FRO, GSH, GSP, HAK, HOK, LIN, SBW, SKI, SWA, WAR, WWA
All these inshore stocks: BCO, BNS, BUT, BYX, ELE, FLA, GAR, GMU, GUR, HPB, JDO, MOK, RBY, RCO, SCH, SKA, SPD, SPE, SPO, SPR, STA, TAR, TRU, YEM
The project is estimated to cost between $0 – $50,000.