abd (version 0.1-22)

IntertidalAlgae: Intertidal Algae

Description

Area coverage of red algae (Mazzaella parksii) in two herbivore treatments (herbivores) at two tide levels (height).

Usage

data(IntertidalAlgae)

source

Harley, C.D.G. 2003. Individualistic vertical responses of interacting species determine range limits across a horizontal gradient. Ecology 84: 1477-1488.

Examples

data(IntertidalAlgae)
str(IntertidalAlgae)

# Using * includes the main effects and the interaction
aov.fit <- aov(sqrt.area ~ herbivores * height, data = IntertidalAlgae)
summary(aov.fit)
lm.fit <- lm(sqrt.area ~ herbivores * height, data = IntertidalAlgae)
anova(lm.fit)