UW / NWFSC / AFSC

Mini-Workshops

The mini-workshop series is a collaboration between fisheries stock assessment researchers at the University of Washington’s School of Aquatic & Fishery Sciences and the NMFS Northwest and Alaska Fisheries Science Centers.

For more information, email series coordinator Jason Cope at jcope@u.washington.edu

View the Spring 2003 schedule here.

Next Workshop:

Thursday, 12th June, 2003

9:30am-11:30am

UW Fishery Sciences Building, room 203

Teresa A'mar & Andre E. Punt

(School of Aquatic & Fishery Sciences, UW)

"Minimum Stock Size Thresholds: How well can we detect whether stocks are below them?"

Abstract

Management of marine fisheries in U.S. waters is based on the Sustainable Fisheries Act. In particular, Rebuilding Plans need to be developed for fish stocks that have been depleted to below a Minimum Stock Size Threshold, MSST. Whether a stock is below MSST or not is based on the results from a stock assessment. Two types of error can arise when a stock is assessed relative to MSST: (a) it can be assessed to be above MSST when it is not, or (b) it can be assessed to be below MSST when it is not. The probability of making these two errors depends on the quality of the data and the suitability of the population dynamics model underlying the stock assessment. Simulation is used to assess the likelihood of making these two types of errors as a function of the true status of the resource, the stock assessment method applied, and the quality and quantity of the data available for assessment purposes.

Click here to link to previous quarter's workshop schedules.

MPAM Group website