Lessons for stock assessment from the northern cod collapse

  title={Lessons for stock assessment from the northern cod collapse},
  author={Carl J. Walters and Jean-Jacques Maguire},
  journal={Reviews in Fish Biology and Fisheries},
  • C. Walters, J. Maguire
  • Published 1 June 1996
  • Environmental Science
  • Reviews in Fish Biology and Fisheries
Fisheries assessment scientists can learn at least three lessons from the collapse of the northern cod off Newfoundland: (1) assessment errors can contribute to overfishing through optimistic long-term forecasts leading to the build-up of overcapacity or through optimistic assessments which lead to TACs being set higher than they should; (2) stock size overestimation is a major risk when commercial catch per effort is used as an abundance trend index, so there is continued need to invest in… 
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