Gulf of Maine/Georges Bank Atlantic Herring Assessment Update – 2009

Original landings series for TRAC 2006 assessment

Revised landings series for TRAC 2009 assessment

Catch estimates (number) Atlantic herring – TRAC 2009

Atlantic herring landings (number) by country – TRAC 2009

Gulf of Maine/Georges Bank Catch at Age: Atlantic herring – TRAC 2009

+ 95% CI

ASAP model (from 2006 assessment) CAA ages NMFS surveys –winter, spring, fall, acoustic Split index series Fishery selectivity 1.0 ages 2-6+ M=0.2 Changes: Total biomass calculated as # at age * Jan 1 wt at age (rather than mid-year) SSB calculated for a fall spawning

Atlantic herring – TRAC 2009

ASAP Final 2009 model CAA ages NMFS surveys –spring, fall Split index series Fishery selectivity fixed at 1.0 ages 2-6+ M=0.2 Total biomass calculated as # at age * Jan 1 wt at age SSB calculated for a fall spawning

Final 2009 Atlantic herring – TRAC 2009

Final 2009 Atlantic herring – TRAC 2009

Final 2009 Atlantic herring – TRAC 2009

Stock Number Age 2 Final 2009

Stock Number Age 6+ Final 2009

Median F + 95% CI from Final model TRAC 2009

Median SSB + 95% CI Final model TRAC 2009

Fishing mortality: model variation compared to retrospective variation

SSB: model variation compared to retrospective variation

Atlantic herring – TRAC 2009 F status quo

Atlantic herring – TRAC 2009

F status quo Atlantic herring – TRAC 2009

Projections at F status quo

Median (+ 1 std) of total age 2+ biomass 30 year projection at Fmsy=0.27