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

For dune, a data frame of observations of 30 species at 20 sites.

For dune.env, 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 1.16-32 Index]