"As part of the national program to improve and standardize stock assessment methods and to foster interaction among fisheries stock assessment scientists, the National Marine Fisheries Service (NMFS) Assessment Methods Working Group sponsored a three-day workshop on estimating natural mortality (M) for use in stock assessment applications. The workshop was held August 11-13, 2009, at the Alaska Fisheries Science Center in Seattle, Washington. A keynote presentation was delivered by Dr. Kai Lorenzen and 43 other scientists participated. The presentations and discussions covered biological aspects of mortality, methods for estimation of M, and best practices for use of M in assessment models"--Executive summary.

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