Stock and recruitment data for Norwegian cod, 1937-1960.

Description

Norwegian cod (Gadus morhua) stock and recruitment by year, 1937-1960.

Format

A data frame of 24 observations on the following 3 variables:

• year: Year of data
• recruits: Recruits – year-class strength index
• stock: Spawning stock index

Topic(s)

• Stock-Recruit
• Recruitment

Source

From Garrod, D.J. 1967. Population dynamics of the Arcto-Norwegian cod. Journal of the Fisheries Research Board of Canada, 24:145-190.

See Also

Used in srStarts, srFuns, and nlsTracePlot examples.

Examples

str(CodNorwegian)
head(CodNorwegian)
op <- par(mfrow=c(1,2),pch=19,mar=c(3,3,0.5,0.5),mgp=c(1.9,0.5,0),tcl=-0.2)
plot(recruits~year,data=CodNorwegian,type="l")
plot(recruits~stock,data=CodNorwegian)
par(op)