Stock and recruitment data for Yellow Perch in Chequamegon Bay, 1975-1986.

Description

Yellow Perch (Perca flavescens) stock-recruitment by year-class in Chequamegon Bay, 1975-1986.

Format

A data frame with 12 observations on the following 2 variables:

• yrclass: Year-class (see below)
• stock: Estimated numbers of mature females caught the year prior to the origin of the 1975-1986 year classes
• recruits: Catches of age-2 fish (when the year-class is formed)

Topic(s)

• Stock-Recruit
• Recruitment

Source

From (approximately) Figure 7 in Bronte et al. 1993. Dynamics of a yellow perch population in Western Lake Superior. North American Journal of Fisheries Management. 13:511-523.

Examples

data(YPerchCB2)
str(YPerchCB2)
head(YPerchCB2)
op <- par(mfrow=c(1,2),pch=19)
plot(recruits~yrclass,data=YPerchCB2,type="b")
plot(recruits~stock,data=YPerchCB2)
par(op)