Stock and recruitment data for Skeena River Sockeye Salmon, 1940-1967.

Stock and recruitment data for Skeena River Sockeye Salmon (Oncorhynchus nerka), 1940-1967.

Format

A data frame with 28 observations on the following 3 variables.

year: a numeric vector of years
spawners: a numeric vector giving number of spawning fish (in thousands)
recruits: a numeric vector containing the recruitment (thousands)

Source

Carroll, R. J. and Ruppert, D. 1988. Transformation and Weighting in Regression. Chapman and Hall, New York. 140 pp. CSV file

Note

The dataset is usually analysed without case 12 because a rockslide occurred that year.

Topic(s)

Stock-Recruit
Recruitment

Examples

data(SockeyeSR)
str(SockeyeSR)
#> 'data.frame':	28 obs. of  3 variables:
#>  $ year    : int  1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 ...
#>  $ spawners: int  963 572 305 272 824 940 486 307 1066 480 ...
#>  $ recruits: int  2215 1334 800 438 3071 957 934 971 2257 1451 ...
head(SockeyeSR)
#>   year spawners recruits
#> 1 1940      963     2215
#> 2 1941      572     1334
#> 3 1942      305      800
#> 4 1943      272      438
#> 5 1944      824     3071
#> 6 1945      940      957
SockeyeSR1 <- SockeyeSR[-12,]
op <- par(mfrow=c(1,2),pch=19)
plot(recruits~year,data=SockeyeSR1,type="b")
plot(recruits~spawners,data=SockeyeSR1)

par(op)