RuffeSLRH92: Biological data for Ruffe captured from the St. Louis River...
In FSAdata: Data to Support Fish Stock Assessment ('FSA') Package

RuffeSLRH92

R Documentation

Biological data for Ruffe captured from the St. Louis River in 1992.

Description

Biological data for Ruffe (Gymnocephalus cernuus) captured in the St. Louis River, Lake Superior in 1992.

Format

A data frame of 738 observations on the following 11 variables:

fish.id: A unique fish identification number (across all years, most of which are not shown in this file
month: Month (numeric) of capture
day: Day of capture
year: Year of capture
indiv: A unique fish identification number within the year
location: Grid location of capture
length: Total length (mm)
weight: Weight (g)
sex: Sex factor (female, male, or unknown)
maturity: Maturity stage factor (developing, immature, mature, nearly.ripe, nearly.spent, recovering, ripe, running, spent, unknown, or yoy)
age: Age (yrs) from scales

Topic(s)

Length Frequency
Weight-Length
Growth
von Bertalanffy
Maturity

Source

personal collection by the United States Geological Survey, Lake Superior Biological Station, Ashland, WI. CSV file

Examples

data(RuffeSLRH92)
str(RuffeSLRH92)
head(RuffeSLRH92)
op <- par(mfrow=c(2,2),pch=19)
hist(RuffeSLRH92$length,main="")
hist(RuffeSLRH92$age,main="")
plot(weight~length,data=RuffeSLRH92)
plot(length~age,data=RuffeSLRH92)
par(op)
xtabs(~age,data=RuffeSLRH92)
xtabs(~sex,data=RuffeSLRH92)
tmp <- c("yoy","immature","developing","mature","nearly.ripe","ripe",
         "running","nearly.spent","spent","recovering","unknown")
RuffeSLRH92$maturity <- ordered(RuffeSLRH92$maturity,levels=tmp)
xtabs(~maturity,data=RuffeSLRH92)
xtabs(~maturity+month+sex,data=RuffeSLRH92)

FSAdata documentation built on Aug. 24, 2023, 5:06 p.m.