ants {GLMsData}

Ants species richness

Description

The number of ant species in New England (usa)

Usage

data(ants)

Format

A data frame containing 44 observations with the following 5 variables.

Site

an abbreviation for the site name

Srich

species richness (number of ant species); a numeric vector

Habitat

the habitat type: a factor with levels Bog and Forest

Latitude

the latitude (in decimal degrees) for the site; a numeric vector

Elevation

the elevation, in metres above sea level; a numeric vector

Details

The data give the ant species richness (number of ant species) found in 64 square metre sampling grids, in 22 bogs and 22 forests surrounding the bogs, in Connecticut, Massachusetts and Vermont (usa). The sites span a 3-degrees of latitude in New England.

Source

N. J. Gotelli and A. M. Ellison (2002). Biogeography at a regional scale: determinants of ant species density in bogs and forests of New England. Ecology, 83, 1604–1609.

References

Aaron M. Ellison (2004) Bayesian inference in ecology. Ecology Letters, 7, 509–520.

Examples

   data(ants)
   summary(ants)