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

In FSA: Simple Fisheries Stock Assessment Methods

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. CSV file

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)

FSA documentation built on Aug. 27, 2023, 1:06 a.m.