| WShrimpGA {FSAdata} | R Documentation |
Stock and recruitment data for White Shrimp off the coast of Georgia (USA), 1979-2000.
Description
White Shrimp (Litopenaeus setiferus) stock and recruitment data from off the coast of Georgia (USA), 1979-2000.
Format
A data frame with 22 observations on the following 3 variables:
- year
Year of data
- stock
Spawning stock index – CPUE in June assessment surveys
- recruits
Recuit index – commercial landings in pounds from Aug-Jan
- yrconf
A code of confidence for whether or not the stock value is known to come from the year shown (see the note)
Topic(s)
Stock-Recruit
Recruitment
Note
No graph was shown for stock values vs. year so some stock values had to be haphazardly paired with recruit values – especially for stock values between 2.5 and 3.0.
Source
From (approximately) Figures 2 and 3 of Belcher, C.N., and C.A. Jennings. 2004. Evaluation of stock-recruitment curves for white shrimp in Georgia. North American Journal of Fisheries Management 24:654-661. CSV file
Examples
data(WShrimpGA)
str(WShrimpGA)
head(WShrimpGA)
op <- par(mfrow=c(1,2),pch=19)
plot(recruits~year,data=WShrimpGA,type="b")
plot(recruits~stock,data=WShrimpGA)
par(op)