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Stock and recruitment data for Sea Lamprey in the Great Lakes, 1997-2007.

Source: R/SLampreyGL.R
SLampreyGL.Rd

Stock and recruitment data for Sea Lamprey (Petromyzon marinus) in the Great Lakes, 1997-2007 from 37 streams.

Format

A data frame of 76 observations on the following two variables:

stock

Female spawners per 100 square meters.

recruits

Yearlngs per 100 square meters.

Source

From (approximately) Figures 2a and 2b in Dawson, H.A. and M.L. Jones. 2009. Factors affecting recruiting dynamics of Great Lakes sea lamprey (Petromyzon marinus) populations. Journal of Great Lakes Research 35:353-360. CSV file

Topic(s)

  • Stock-Recruit

  • Recruitment

Examples

data(SLampreyGL)
str(SLampreyGL)
#> 'data.frame':	77 obs. of  2 variables:
#>  $ stock   : num  4.08 3.93 3.78 3.64 3.52 3.13 3.06 2.95 2.77 2.77 ...
#>  $ recruits: num  120 137 40 70 970 ...
head(SLampreyGL)
#>   stock recruits
#> 1  4.08   120.00
#> 2  3.93   136.67
#> 3  3.78    40.00
#> 4  3.64    70.00
#> 5  3.52   970.00
#> 6  3.13    96.67
plot(recruits~stock,data=SLampreyGL)