rich (version 0.2)

Tomicus: Maximum temperature at sites hosting 2 species of closely related bark-beetles of genus Tomicus

Description

The Tomicus data set consists of a list with 3 components: destruens Maximum temperature at 33 sites where T. destruens was observed. piniperda Maximum temperature at 20 sites where T. piniperda was observed. both Maximum temperature at 4 sites where both T. destruens and T. piniperda were observed in sympatry.

Usage

data(Tomicus)

encoding

latin1

format

Tomicus is a list of 3 vectors.

source

Horn, A. (2006) Comparaison des distributions passee et presente de deux especes proches de scolytes, Tomicus piniperda et T. Destruens (Coleoptera: Scolytinae). These de l'Universite d'Orleans, France 180pp.

Examples

## Comparing mean temperatures at sites where either T. destruens,
## T. piniperda or both are present using comp2mean
data(Tomicus)
c2m(pop1=Tomicus$destruens,pop2=Tomicus$piniperda,
pop3=Tomicus$both, nrandom=99)