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), andSF
(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)