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.

Usage

data(Mirex)

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 coho.

Details

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

Source

actual data from Makarewicz, J.C., E.Damaske, T.W. Lewis, and M. Merner. 2003. Trend analysis reveals a recent reduction in mirex concentrations in coho (Oncorhynchus kistuch) and chinook (O. tshawytscha) salmon from Lake Ontario. Environmental Science and Technology, 37:1521-1527.

Examples

data(Mirex)
Mirex$year <- factor(Mirex$year)
attach(Mirex)
lm1 <- lm(mirex~weight*year*species)
anova(lm1)
fit.plot(lm1)
detach(Mirex)