mite: Oribatid Mite Data with Explanatory Variables

In vegan: Community Ecology Package

Description

Oribatid mite data. 70 soil cores collected by Daniel Borcard in 1989. See Borcard et al. (1992, 1994) for details.

Usage

data(mite)
data(mite.env)
data(mite.pcnm)
data(mite.xy)

Format

There are three linked data sets: mite that contains the data on 35 species of Oribatid mites, mite.env that contains environmental data in the same sampling sites, mite.xy that contains geographic coordinates, and mite.pcnm that contains 22 PCNM base functions (columns) computed from the geographic coordinates of the 70 sampling sites (Borcard & Legendre 2002). The whole sampling area was 2.5 m x 10 m in size.

The fields in the environmental data are:

SubsDens

Substrate density (g/L)

WatrCont

Water content of the substrate (g/L)

Substrate

Substrate type, factor with levels Sphagn1, Sphagn2 Sphagn3 Sphagn Litter Barepeat Interface

Shrub

Shrub density, an ordered factor with levels 1 < 2 < 3

Topo

Microtopograhy, a factor with levels Blanket and Hummock

Source

Pierre Legendre

References

Borcard, D., P. Legendre and P. Drapeau. 1992. Partialling out the spatial component of ecological variation. Ecology 73: 1045-1055.

Borcard, D. and P. Legendre. 1994. Environmental control and spatial structure in ecological communities: an example using Oribatid mites (Acari, Oribatei). Environmental and Ecological Statistics 1: 37-61.

Borcard, D. and P. Legendre. 2002. All-scale spatial analysis of ecological data by means of principal coordinates of neighbour matrices. Ecological Modelling 153: 51-68.

Examples

data(mite)

Example output

Loading required package: permute
Loading required package: lattice
This is vegan 2.4-4

vegan documentation built on May 2, 2019, 5:51 p.m.