Mirex: Mirex concentration, weight, capture year, and species of...

MirexR Documentation

Mirex concentration, weight, capture year, and species of Lake Ontario salmon.

Description

Mirex concentration, weight, capture year, and species of Lake Ontario Coho and Chinook salmon.

Format

A data frame with 122 observations on the following 4 variables.

year

a numeric vector of capture years

weight

a numeric vector of salmon weights (kg)

mirex

a numeric vector of mirex concentration in the salmon tissue (mg/kg)

species

a factor with levels chinook and coho

Details

The year variable should be converted to a factor as shown in the example.

Topic(s)

  • Linear models

  • Other

Source

From (actual data) Makarewicz, J.C., E.Damaske, T.W. Lewis, and M. Merner. 2003. Trend analysis reveals a recent reduction in mirex concentrations in Coho (Oncorhynchus kisutch) and Chinook (O. tshawytscha) Salmon from Lake Ontario. Environmental Science and Technology, 37:1521-1527. CSV file

Examples

Mirex$year <- factor(Mirex$year)
lm1 <- lm(mirex~weight*year*species,data=Mirex)
anova(lm1)


droglenc/FSA documentation built on Aug. 30, 2023, 12:51 a.m.