centipedes: Counts of centipedes.
In nclSLR: The nclSLR package.

Description Usage Value Source References Examples

A data set containing the counts of Lithobius forficatus, more commonly known as the brown or stone centipede, at each of 30 sites in microhabitats of rotting wood. For each site, a number of soil and habitat variables are recorded in addition to their altitude and geographical coordinates.

1	data(centipedes)

A data frame with 30 rows and 10 variables. The data frame contains the following columns:

site: The abbreviated site name.
count: The number of centipedes found at the site.
offset: The area sampled at the site in square metres.
type: A factor with two levels, Synanthropic and Deciduous, which refer to the habitat in which the site was located; either deciduous woods or “synanthropic” areas associated with human habitation, e.g. parks and gardens.
lorg: The natural loagarithm of the percentage of organic matter in the soil.
lalt: The natural loarithm of the altitude of the site in metres.
airt: The air temperature in degrees Celcius.
soilt: The soil temperature in degrees Celcius.
east: The Easting of the site in tenths of a kilometre.
north: The Northing of the site in tenths of a kilometre.

The complete data set, which involved more species of centipede and more microhabitats, is described in Blackburn et al. (2002).

J. Blackburn and M. Farrow and W. Arthur (2002), Factors influencing the distribution, abundance and diversity of geophilomorph and lithobiomorph centipedes. Journal of Zoology, 256, 221–232.