B 50% R

DEFINITION
  • The level of spawning stock at which average recruitment is one half (50%) of the maximum of the underlying stock-recruitment relationship.
  • ICES-ACFM (1997): Report of the Study Group on the precautionary approach to fisheries management, ICES Headquarters, 5-11 February 1997: 7-9; Modified from Caddy J.F. and R. Mahon (1995) Reference points for fisheries management. FAO Fisheries Technical Paper, 347: 83 p.
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