Description Usage Format Source Examples
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:
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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:
a numeric vector of thickness of soil A1 horizon.
an ordered factor with levels: 1
< 2
<
4
< 5
.
a factor with levels: BF
(Biological
farming), HF
(Hobby farming), NM
(Nature
Conservation Management), and SF
(Standard Farming).
an ordered factor of land-use with levels: Hayfield
< Haypastu
< Pasture
.
an ordered factor with levels: 0
< 1
<
2
< 3
< 4
.
Jongman, R.H.G, ter Braak, C.J.F & van Tongeren, O.F.R. (1987). Data Analysis in Community and Landscape Ecology. Pudoc, Wageningen.
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