YPerchGL: Lengths and weights of Yellow Perch from Grafton Lake (ME) by...
In droglenc/FSAdata: Data to Support Fish Stock Assessment ('FSA') Package

YPerchGL

R Documentation

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

Description

Yellow Perch (Perca flavescens) fork lengths and weights separated 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. CSV file

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)

droglenc/FSAdata documentation built on Aug. 30, 2023, 12:53 a.m.