This paper includes updated local biomass estimates of toothfish populations with bootstrapped confidence intervals using both CPUE-by-seabed area and Chapman biomass estimation methods agreed at WG-SAM-16 with revisions to the CPUE-by-seabed area parameter values agreed at WG-SAM-17. The analysis includes Research Blocks in Subareas 48.2, 48.6, 58.4 and 88.3. Given the changes in CPUE-by-seabed area method parameter values that were agreed at WG-SAM-17, the estimates of biomass in the relevant Research Blocks have increased relative to the estimates that were presented at WG-FSA-16. The higher CPUE-by-seabed area estimates has also resulted in a greater overlap in confidence intervals with the Chapman estimates in some, but not all, of the Antarctic toothfish Research Blocks.
Número de documento:
WG-FSA-17/42
Presentado por:
Dr Lucy Robinson (Secretaría de la CCRVMA)
Aprobado por:
Mr Andrew Wright (Secretaría de la CCRVMA)
Punto(s) de la agenda
Resumen