scape (version 1.0-4)

x.cod: Cod assessment

Description

Stock assessment data and model fit for cod (Gadus morhua) in Icelandic waters, using a Coleraine statistical catch-at-age model. This is a single-sex model with 10 age classes, the catch data starting in 1971 and ending in 2003. The model was fitted to three data components: survey abundance index, commercial catch at age, and survey catch at age.

Usage

x.cod

format

List of class scape containing: ll{ N predicted numbers at age B predicted biomass, recruitment, and observed landings (year things) Sel predicted selectivity and observed maturity (age things) Dev predicted recruitment deviates from the stock-recruitment curve Survey survey abundance index and fit CAc commercial C@A (catch at age) and fit CAs survey C@A and fit }

source

Marine Research Institute. 2003. State of marine stocks in Icelandic waters 2002/2003. Available at http://www.hafro.is/Astand/2003/astand-allt-03.pdf.

Details

A maturity vector of zeros and ones was used to predict the biomass of age 4 and older, the quantity of main interest for the management of this stock. Estimated parameters: R0, Rinit, uinit, Sleft[commercial], Sfull[c], Sleft[survey], Sfull[s], q, and 41 recruitment deviates.

References

Hilborn, R., M. Maunder, A. Parma, B. Ernst, J. Payne, and P. Starr. 2003. Coleraine: A generalized age-structured stock assessment model. User's manual version 2.0. University of Washington Report SAFS--UW--0116. Available at http://fish.washington.edu/research/coleraine/coleraine.pdf. Magnusson, A. 2003. Coleraine assessment of the Icelandic cod stock. Report for the Icelandic Marine Research Institute. Available from the author.

See Also

importRes, x.ling, x.oreo, x.sbw

Examples

plotB(x.cod)
plotCA(x.cod, "c")
plotCA(x.cod, "s")
plotIndex(x.cod, "s")
plotN(x.cod)
plotSel(x.cod)