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Stock and recruitment data for Icelandic summer spawning Herring, 1946-1996.

Source: R/HerringISS.R
HerringISS.Rd

Icelandic summer spawning Herring (Clupeaformis harengus) stock, recruitment, landings, and fishing mortality by year, 1946-1996.

Format

A data frame of 51 observations on the following 6 variables:

year

Year of data

ssb

Spawning stock biomass (tonnes)

rec

Recruits -- i.e., 1-year olds (thousands)

land

Landings (in millions of pounds)

fmort

Fishing related mortality

Source

From the Report of the Atlanto-Scandian Herring and Capelin Working Group. ICES Doc. C.M. 1995. Assess: 9.; Anon. 1986. Report of the herring assessment working group for the area south of 62 degrees N. ICES Doc. C.M. 1986. Assess: 19.; Anon. 1991. Report of the Atlanto-Scandian Herring and Capelin Working Group. ICES Doc. C.M. 1991. Assess: 17.; State of marine stocks and environmental conditions in Icelandic waters 1989 Fishing prospects 1990, August 1990. Hafranns\'oknastofnun Fj\"olrit NR. 19. Marine Research Institute, Iceland. Mon Jun 20, 1988.; Report of the Northern Pelagic and Blue Whiting Fisheries Working Group. ICES Doc. C.M. 1997. Assess:14. Obtained from Ransom Myers old online database. CSV file

Topic(s)

  • Stock-Recruit

  • Recruitment

Examples

data(HerringISS)
str(HerringISS)
#> 'data.frame':	51 obs. of  5 variables:
#>  $ year : int  1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 ...
#>  $ ssb  : int  NA 140720 120358 90942 86954 87738 100536 108248 147062 169400 ...
#>  $ rec  : int  179506 68007 77472 197367 116475 323928 197295 167414 191196 469184 ...
#>  $ land : int  NA 47800 56800 5400 13600 15800 10500 17600 11000 20500 ...
#>  $ fmort: num  NA 0.35 1.597 0.089 0.195 ...
head(HerringISS)
#>   year    ssb    rec  land  fmort
#> 1 1946     NA 179506    NA     NA
#> 2 1947 140720  68007 47800 0.3502
#> 3 1948 120358  77472 56800 1.5971
#> 4 1949  90942 197367  5400 0.0890
#> 5 1950  86954 116475 13600 0.1950
#> 6 1951  87738 323928 15800 0.2573
op <- par(mfrow=c(1,2))
plot(rec~year,data=HerringISS,type="l")
plot(rec~ssb,data=HerringISS)

par(op)