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Stock and recruitment data for Blackwater Estuary Herring, 1962-1997.

Source: R/HerringBWE.R
HerringBWE.Rd

Stock and recruitment data for Blackwater Estuary Herring (Clupea harengus), 1962-1997 spawning years.

Format

A data frame with 36 observations on the following 3 variables.

spawning.year

a numeric vector of spawning years

ssb

a numeric vector giving biomass of spawning fish

recruits

a numeric vector containing the number of recruits

Source

From Fox, C.J. 2001. Recent trends in stock-recruitment of Blackwater herring (Clupea harengus L.) in relation to larval production. ICES Journal of Marine Science, 58:750-762. CSV file

Topic(s)

  • Stock-Recruit

  • Recruitment

Examples

data(HerringBWE)
str(HerringBWE)
#> 'data.frame':	36 obs. of  3 variables:
#>  $ spawning.year: int  1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 ...
#>  $ ssb          : num  164 222 272 566 553 ...
#>  $ recruits     : num  1.77 5.182 5.607 2.527 0.627 ...
head(HerringBWE)
#>   spawning.year   ssb recruits
#> 1          1962 163.5    1.770
#> 2          1963 221.8    5.182
#> 3          1964 272.5    5.607
#> 4          1965 566.5    2.527
#> 5          1966 552.6    0.627
#> 6          1967 558.9    0.203
op <- par(mfrow=c(1,2))
plot(recruits~spawning.year,data=HerringBWE,type="l")
plot(recruits~ssb,data=HerringBWE)

par(op)