meau {ade4} | R Documentation |
This data set contains information about sites, environmental variables and Ephemeroptera Species.
data(meau)
meau
is a list of 3 components.
Data set equivalents to meaudret
: one site (6) along the Bourne, a Meaudret affluent and
one physico chemical variable - the oxygen concentration were added.
Pegaz-Maucet, D. (1980) Impact d'une perturbation d'origine organique sur la dérive des macro-invertébrés benthiques d'un cours d'eau. Comparaison avec le benthos. Thèse de troisième cycle, Université Lyon 1, 130 p.
Thioulouse, J., Simier, M. and Chessel, D. (2004) Simultaneous analysis of a sequence of paired ecological tables. Ecology, 85, 1, 272–283.
data(meau) par(mfrow = c(2,2)) pca1 <- dudi.pca(meau$mil, scan = FALSE, nf = 4) s.class(pca1$li, meau$plan$dat, sub = "Principal Component Analysis") pca2 <- between(pca1, meau$plan$dat, scan = FALSE, nf = 2) s.class(pca2$ls, meau$plan$dat, sub = "Between dates Principal Component Analysis") s.corcircle(pca1$co) s.corcircle(pca2$as)