mollusc {ade4}R Documentation

Faunistic Communities and Sampling Experiment

Description

This data set gives the abundance of 32 mollusk species in 163 samples. For each sample, 4 informations are known : the sampling sites, the seasons, the sampler types and the time of exposure.

Usage

data(mollusc)

Format

mollusc is a list of 2 objects.

fau
is a data frame with 163 samples and 32 mollusk species (abundance).
plan
contains the 163 samples and 4 variables.

Source

Richardot-Coulet, M., Chessel D. and Bournaud M. (1986) Typological value of the benthos of old beds of a large river. Methodological approach. Archiv fùr Hydrobiologie, 107, 363–383.

Examples

data(mollusc)
coa1 <- dudi.coa(log(mollusc$fau + 1), scannf = FALSE, nf = 3)
par(mfrow = c(2,2))
s.chull(coa1$li, mollusc$plan$site, 2, 3, opt = 1, cpoi = 1)
s.chull(coa1$li, mollusc$plan$season, 2, 3, opt = 1, cpoi = 1)
s.chull(coa1$li, mollusc$plan$method, 2, 3, opt = 1, cpoi = 1)
s.chull(coa1$li, mollusc$plan$duration, 2, 3, opt = 1, cpoi = 1)
par(mfrow=c(1,1))

Worked out examples


> library(ade4)
> ### Name: mollusc
> ### Title: Faunistic Communities and Sampling Experiment
> ### Aliases: mollusc
> ### Keywords: datasets
> 
> ### ** Examples
> 
> data(mollusc)
> coa1 <- dudi.coa(log(mollusc$fau + 1), scannf = FALSE, nf = 3)
> par(mfrow = c(2,2))
> s.chull(coa1$li, mollusc$plan$site, 2, 3, opt = 1, cpoi = 1)
> s.chull(coa1$li, mollusc$plan$season, 2, 3, opt = 1, cpoi = 1)
> s.chull(coa1$li, mollusc$plan$method, 2, 3, opt = 1, cpoi = 1)
> s.chull(coa1$li, mollusc$plan$duration, 2, 3, opt = 1, cpoi = 1)
> par(mfrow=c(1,1))
> 
> 
> 

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