SEDAR Caribbean Data Evaluation Workshop San Juan, Puerto Rico January 26-29, 2009 Data Evaluation And Advice Potential

St. Croix

St. Thomas/ St. John

Puerto Rico

Conclusions/Recommendations of Caribbean Data Evaluation SEDAR If stock has adequate length and catch data (listed as ‘OFL’ in Summary Table) Estimate total mortality (Z) using the Gedamke and Hoenig (2006) base model and newly developed multispecies/multigear extensions to the method. Compute recent fishing mortality rate by subtracting out an assumed natural mortality rate (F = Z – M). Select a proxy for FMSY such as the natural mortality rate or the fishing mortality rate associated with a given spawning potential ratio Set OFL = FMSY*(recent average catch)/F Otherwise, if no reliable catch data exist, develop rationale for alternative management measures that do not conform to the framework established in the NS1 guidelines. Otherwise, if stock has adequate catch data, then use informed judgment if consensus can be reached on a proxy for FMSY and the level of depletion relative to unfished levels, d = (Bfirst – Blast)/B0, then set OFL = (average catch)/(n + d/(0.4*FMSY)) if consensus can be reached on a vulnerability scalar from a PSA analysis, then set OFL = (average catch) * vulnerability scalar if no consensus can be reached, adopt protocol of PFMC, i.e., OFL = average catch and ABC = 0.5*(average catch).