scape (version 2.3.5)

x.ling: Ling Assessment

Description

Stock assessment data and model fit for ling (Genypterus blacodes) in New Zealand waters, using a Coleraine statistical catch-at-age model.

This is a two-sex model with 30 age classes and 29 length classes, the catch data starting in 1973 and ending in 2000. The model was fitted to five data components: longline abundance index, survey abundance index, survey catch at age, longline catch at length, and trawl catch at length.

Usage

x.ling

Format

List of class scape containing:

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
CPUE	commercial abundance index and fit
Survey	survey abundance index and fit
CAs	survey C@A (catch at age) and fit
CLc	commercial C@L (catch at length) and fit

Details

Hilborn et al. (2003) give a general description of the Coleraine generalized model.

Estimated parameters: R0, Rinit, Sleft[trawl], Sfemale[t], Smale[t], Sright[t], Sleft[longline], Sfemale[l], Smale[l], Sright[l], Sleft[survey], Sfemale[s], Smale[s], Sright[s], q[l], q[s], and 29 recruitment deviates.

References

Hilborn, R., Maunder, M., Parma, A., Ernst, B., Payne, J. and Starr, P. (2003) Coleraine: A generalized age-structured stock assessment model. User's manual version 2.0. University of Washington Report SAFS-UW-0116.

See Also

importCol was used to import the fitted model.

x.cod, x.ling, x.oreo, x.saithe, and x.sbw are fitted scape models to explore.

scape-package gives an overview of the package.

Examples

plotB(x.ling)
plotCA(x.ling, "s")
plotCL(x.ling, "c", series="1")
plotCL(x.ling, "c", series="2")
plotIndex(x.ling, "c")
plotIndex(x.ling, "s")
plotN(x.ling)
plotSel(x.ling)