Lengths and weights of Yellow Perch from Grafton Lake (ME) by year.

Description

Yellow Perch (Perca flavescens) fork lengths and weights seperated by year.

Format

A data frame with 100 observations on the following 3 variables:

• fl: Fork Length (nearest mm) at capture
• w: Weight (nearest 0.1 g) at capture
• year: Year of capture (1994 or 2000)

Topic(s)

• Weight-Length
• Length Frequency

Source

From (approximately) Figure 3 in Brylinsky, M. 2001. An evaluation of changes in the yellow perch (Perca flavescens) population of Grafton Lake, Kejimkujik National Park, after dam removal. Technical Report Publication No. 59, Acadia Centre for Estuarine Research. 2001.

Examples

data(YPerchGL)
str(YPerchGL)
head(YPerchGL)
op <- par(mfrow=c(1,2),pch=19)
plot(w~fl,data=YPerchGL,subset=year==1994,main="1994")
plot(w~fl,data=YPerchGL,subset=year==2000,main="2000")
par(op)