aravo {lori}

Alpine plant communities in Aravo, France: Abundance data and covariates

Description

Originally published in Choler, P. 2005. Consistent shifts in Alpine plant traits along a mesotopographical gradient. Arctic, Antarctic, and Alpine Research 37: 444–453.

Usage

data(aravo)

Format

A list with 4 attributes:

spe

abundance table of 82 species in 75 environments

env

a matrix of 6 covariates for the 75 environments

traits

a matrix of 8 covariates for the 82 species

spe.names

a vector of 82 species names

Details

Analysed in Dray, S., Choler, P., Dolédec, S., Peres-Neto, P.R., Thuiler, W., Pavoine, S. & ter Braak, C.J.F. 2014. Combining the fourth-corner and the RLQ methods for assessing trait responses to environmental variation. Ecology 95: 14-21

Description from Dray et al. (2014): Community composition of vascular plants was determined in 75 5 × 5 m plots. Each site was described by six environmental variables: mean snowmelt date over the period 1997–1999, slope inclination, aspect, index of microscale landform, index of physical disturbance due to cryoturbation and solifluction, and an index of zoogenic disturbance due to trampling and burrowing activities of the Alpine marmot. All variables are quantitative except the landform and zoogenic disturbance indices that are categorical variables with five and three categories, respectively. Eight quantitative functional traits (i.e., vegetative height, lateral spread, leaf elevation angle, leaf area, leaf thickness, specific leaf area, mass-based leaf nitrogen content, and seed mass) were measured on the 82 most abundant plant species (out of a total of 132 recorded species).

Source

http://pbil.univ-lyon1.fr/ade4/ade4-html/aravo.html