Final Report - 2010-044 - Quantitatively defining proxies for biological and economic reference points in data poor and data limited fisheries
The outputs from this project will guide fishery management agencies in their development of policies and management rules. The final report will be made available to the relevant management agencies and industry, and findings will be communicated to various stakeholders further through seminars, meetings, publications and conferences.
Keywords: data-poor, reference point, bioeconomic, life history, gear efficiency, biomass estimation, fishing mortality, harvest control rule
OUTCOMES ACHIEVED TO DATE
- A means to derive good estimates of economic variable values for use in bioeconomic analyses when some biological models exist but economic data are unavailable.
- A means to estimate fishing mortality that equates to maximum sustainable yield (FMSY) when fisheries data are extremely limited.
- A means to derive estimates of effort (and/or biomass) at maximum economic yield given FMSY and limited information on the type of fishing activity.
- Developed and tested a simple catch rate gradient based harvest control rule for data-poor fisheries.
- Established relationship between fishing mortality-based biological reference points (including FMSY) and fish life-history parameters, particularly the natural mortality rate. Developed and applied a statistical method for estimating gear efficiency, biomass, and fishing mortality based on catch data alone.
- Developed methods to estimate catch-based or biomass-based reference points (including virgin biomass, maximum sustainable yield, limit biomass, and depletion) using primarily catch history.