seabirds {GLMsData}

Counts of seabirds

Description

The number of four species of seabirds

Usage

data(seabirds)

Format

A data frame with 40 observations on the following 3 variables.

Quadrat

the quadrat; a numeric factor with levels 0 through 10

Species

the species; a factor with levels M (murre), CA (crested auklet), LA (least auklet) and P (puffin)

Count

the number of seabirds of the given species in the given quadrat; a numeric vector

Details

The data are counts of four seabird species in ten 0.25 square-km quadrats in the Anadyr Strait (off the Alaskan coast) during summer, 1998.

Source

Andrew R. Solow and Woollcott Smith (1991) Cluster in a heterogeneous community sampled by quadrats. Biometrics, 47(1), 311–317.

References

D. J. Hand, F. Daly, A. D. Lunn, K. J. McConway, and E. Ostrowski (1994) A Handbook of Small Data Sets, London: Chapman and Hall. Dataset 215.

Examples

data(seabirds)
summary(seabirds)