A Surplus Yield Model Incorporating Recruitment and Applied to a Stock of Atlantic Mackerel (Scomber scombrus)
- 1 February 1978
- journal article
- research article
- Published by Canadian Science Publishing in Journal of the Fisheries Research Board of Canada
- Vol. 35 (2) , 229-234
- https://doi.org/10.1139/f78-037
Abstract
A modification of Schaefer's surplus yield model that takes into account variations in year-class strength is introduced. Expressions for long-term equilibrium yield under assumptions of both linear and density-dependent recruitment are derived and compared. Strategies for exploitation under nonequilibrium conditions are discussed and equations derived. The model is fitted to a stock of mackerel and projections for the stock biomass in 1980 under various levels of fishing mortality are made. Key words: mathematical model, fisheries management, stock biomass projectionsThis publication has 2 references indexed in Scilit:
- Some aspects of the dynamics of populations important to the management of the commercial Marine fisheriesBulletin of Mathematical Biology, 1991
- Methods of Estimating Effects of Fishing on Fish PopulationsTransactions of the American Fisheries Society, 1968