liquenes {ADER}

Epiphytic Lichens Data

Description

Percentage cover of foliose and fruticulose epiphytic lichen species in 20 cm x 20 cm quadrats placed on the trunk of several trees along three transects in a pine forest in Sierra de Guadarrama (Madrid, Spain).

Usage

data("liquenes")

Format

A data frame with 608 observations on the following 33 variables.

• Grupo. Transect identifier.

• Arbol. Tree identifier within each transect.

• DAP. DBH, i.e., diameter (cm) at breast height of the phorophyte tree.

• Especie. Species of the phorophyte tree. A factor with levels P (Pinus sylvestris) and R (Quercus pyrenaica).

• Distancia. Distance (m) from the tree to a road on the border of the forest.

• Sitio. Location on the trunk. A factor with levels B (base of the tree) or P (at breast height).

• Orientacion. Orientation of the quadrat over the tree trunk. A factor with levels N (facing North) or S (facing South).

• Musgos. Percentage cover of mosses.

• Crustaceos. Percentage cover of crustaceous lichens.

• Agrietacion. A measure (percentage) of bark rugosity.

• Cetraria.chlorophylla to Sp.1. Percentage cover of each recorded species of foliose or fruticulose lichen.

• Riqueza. Richness of fruticulose and foliose lichen species per quadrat.

Details

Data collected by students of Ecology of Rey Juan Carlos University in September 2016.

Examples

data(liquenes)
str(liquenes)