Description

The dune meadow vegetation data, dune, has cover class values of 30 species on 20 sites. The corresponding environmental data frame dune.env has following entries:

Usage

Format

dune is a data frame of observations of 30 species at 20 sites. The species names are abbreviated to 4+4 letters (see make.cepnames). The following names are changed from the original source (Jongman et al. 1987): Leontodon autumnalis to Scorzoneroides, and Potentilla palustris to Comarum.

dune.env is a data frame of 20 observations on the following 5 variables:

A1:

a numeric vector of thickness of soil A1 horizon.

Moisture:

an ordered factor with levels: 1 < 2 < 4 < 5.

Management:

a factor with levels: BF (Biological farming), HF (Hobby farming), NM (Nature Conservation Management), and SF (Standard Farming).

Use:

an ordered factor of land-use with levels: Hayfield < Haypastu < Pasture.

Manure:

an ordered factor with levels: 0 < 1 < 2 < 3 < 4.

Source

Jongman, R.H.G, ter Braak, C.J.F & van Tongeren, O.F.R. (1987). Data Analysis in Community and Landscape Ecology. Pudoc, Wageningen.

Examples