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Stock and recruitment data for Vendace from Lake Puulavesi, 1982-1996.

Source: R/VendaceLP.R
VendaceLP.Rd

Vendace (Coregonus albula) recruitment by year in Lake Puulavesi, 1982-1996.

Format

A data frame of 15 observations on the following 3 variables:

year

Year of data

stock

Spawning stock index -- autumn biomass (kg/ha) of age-1+ fish

recruits

Recuit index -- density (indivs/ha) of age-0+ fish in first autumn

Source

From (approximately) Figure 1 and 2 of Marjomaki, T.J. 2004. Analysis of the spawning stock-recruitment relationship of vendace (Coregonus albula (L.)) with evaluation of alternative models, additional variables, biases and errors. Ecology of Freshwater Fish 13:46-60. CSV file

Topic(s)

  • Stock-Recruit

  • Recruitment

Examples

data(VendaceLP)
str(VendaceLP)
#> 'data.frame':	15 obs. of  3 variables:
#>  $ year    : int  1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 ...
#>  $ stock   : num  NA 5.5 7.8 14 14.3 13.1 8.2 3.5 6.1 1.2 ...
#>  $ recruits: int  145 1017 289 317 276 70 1889 214 110 62 ...
head(VendaceLP)
#>   year stock recruits
#> 1 1982    NA      145
#> 2 1983   5.5     1017
#> 3 1984   7.8      289
#> 4 1985  14.0      317
#> 5 1986  14.3      276
#> 6 1987  13.1       70
op <- par(mfrow=c(1,2),pch=19)
plot(recruits~year,data=VendaceLP,type="l")
plot(recruits~stock,data=VendaceLP)

par(op)