R: Vegetation and Environment in Dutch Dune Meadows.

dune {vegan} | R Documentation

## Vegetation and Environment in Dutch Dune Meadows.

### 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

      data(dune)
      data(dune.env)

### 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

    data(dune)
    data(dune.env)

[Package vegan version 2.4-3 Index]