I compare two figures for spawning stock biomass of eastern Atlantic bluefin tuna (ABT), in 2009 and 2014. The former was used to support listing of it to CITES Appendix I in 2010. This was rejected. Recently ABT is recognized as a success story of stock recovery. But... it did NOT decrease in 2000s.
Date: Fri, 21 Oct 2016 14:34:27 +0900
 Stock assessment older than 20 yrs (maybe >maximum age class of ABT) is robust.
but recent stock estimation will be revised, because it is based on a cohort
analysis using catch-at-age data.