REPORT OF THE STANDING COMMITTEE ON RESEARCH ... - Iccat

EXECUTIVE SUMMARY BFTNumber of year‐old fishtonnes (1000s)Spawning Biomass90807060504030201001970 1980 1990 2000 2010YearRecruitment60000050000040000030000020000010000001970 1980 1990 2000 2010YearFishing MortalityFishing MortalityF on spawners0.300.250.200.150.100.050.001970 1980 1990 2000 2010YearApical F1.61.41.210.80.60.40.201970 1980 1990 2000 2010YearBFTW-Figure 2. Median estimates of spawning biomass (age 8+), fishing mortality on spawners, apical fishingmortality (F on the most vulnerable age class) and recruitment for the base VPA model. The 80% confidenceintervals are indicated with dotted lines.4.543.53High recruitment (F/F MSY =2.1, B/B MSY =0.14)F / Fmsy2.521.51Low recruitment (F/F MSY =1.3,0.500 0.5 1 1.5 2 2.5 3B/BmsyBFTW-Figure 3 Estimated status of stock relative to the Convention objectives (MSY) by year (1970 to 2007).The lines give the time series of point estimates for each recruitment scenario and the clouds of white symbolsdepict the corresponding bootstrap estimates of uncertainty for the most recent year.89