Lalashan Transect

data
A transect along an elevation gradient from 860 to 2,180 m asl. in a subtropical forest in Taiwan.
Published

January 26, 2024

Modified

January 26, 2024

Description

Dataset of 18 vegetation plots (20 m x 20 m) sampled along an elevation transect in the submontane and montane forest vegetation of Taiwan. In each plot, all woody species with DBH > 1 cm and taller than 2 m were recorded and their DBH measured. This information was used to calculate the importance value index (IVI, percentage scale) of each species in each plot (combining species relative basal area and relative density).

This transect is composed of six elevation zones (labelled as L1 to L6), each represented by three samples (one at the leeward side of the mountain, one on the ridge and another on the windward side, labelled with L, R and W, respectively).

For more details, see the data source at David Zelený’s site in this link.

Usage

# Load the data
lalashan <- readRDS("lalashan.rds")

The data set is a list with four elements:

  • lalashan$env is a data frame with plot attributes
  • lalashan$spp is a data frame with attributes of recorded species
  • lalashan$obs is the record of species in the plots structured as database list
  • lalashan$cross is the vegetation matrix of plots by species
names(lalashan)
[1] "env"   "spp"   "obs"   "cross"
head(lalashan$env)
head(lalashan$spp)
head(lalashan$obs)