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Harvest, escapement, and return of northern Southeast Alaska Pink Salmon (Oncorhynchus gorbuscha), 1960-1991, and average sea surface temperature between June and November off Sitka, Alaska, 1960-1990.

Format

A data frame of 34 rows on the following 5 variables:

year

Year of data

harvest

Harvest (thousands of fish)

escapement

Escapement (thousands of fish)

return

Returns (thousands of fish) as sum of harvest and escapement from two years later (lagging is for proper brood year correspondence)

SST

Average sea surface temperature (C) between June and November off Sitka, AK from one year latter (lagging is for matching when the salmon are actually in the ocean)

Source

From Table 3.1 in Quinn, T.J. and R.B. Deriso. 1999. Quantitative Fish Dynamics. Oxford University Press, New York, New York. CSV file

Topic(s)

  • Stock-Recruit

  • Recruitment

Examples

data(PSalmonAK)
str(PSalmonAK)
#> 'data.frame':	34 obs. of  5 variables:
#>  $ year      : int  1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 ...
#>  $ harvest   : int  NA NA 1260 7624 489 10901 7281 5159 4786 2429 ...
#>  $ escapement: int  NA NA 1418 2835 1957 4033 2750 2891 3098 2001 ...
#>  $ return    : int  2678 10459 2446 14934 10031 8050 7884 4430 13086 6051 ...
#>  $ SST       : num  NA 11.2 11.6 11.5 12.3 ...
head(PSalmonAK)
#>   year harvest escapement return   SST
#> 1 1958      NA         NA   2678    NA
#> 2 1959      NA         NA  10459 11.23
#> 3 1960    1260       1418   2446 11.63
#> 4 1961    7624       2835  14934 11.46
#> 5 1962     489       1957  10031 12.33
#> 6 1963   10901       4033   8050 11.62
op <- par(mfrow=c(1,2))
plot(return~year,data=PSalmonAK)
plot(return~escapement,data=PSalmonAK)

par(op)