Lengths and weights of Yellow Perch from Grafton Lake (ME) by year.
Yellow Perch (Perca flavescens) fork lengths and weights seperated by year.
A data frame with 100 observations on the following 3 variables:
Fork Length (nearest mm) at capture
Weight (nearest 0.1 g) at capture
Year of capture (1994 or 2000)
Weight-Length
Length Frequency
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.
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)
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.