asbio (version 1.0-5)

BCI.count: Barro Colorado Island Tree Counts

Description

This dataset, lifted from vegan, contains tree counts in 1-hectare plots in Barro Colorado Island, Panama.

Usage

data(BCI.count)

encoding

UTF-8

format

A data frame with 50 plots (rows) of 1 hectare with counts of trees on each plot with total of 225 species (columns). Full Latin names are used for tree species.

source

http://www.sciencemag.org/cgi/content/full/295/5555/666/DC1 Documentation here follows directly from vegan

Details

Data give the numbers of trees at least 10 cm in diameter at breast height (1.3 m above the ground) in each one hectare square of forest. Within each one hectare square, all individuals of all species were tallied and are recorded in this table.

The data frame contains only the Barro Colorado Island subset of the original data.

The quadrats are located in a regular grid. See examples for the coordinates.

References

Condit, R, Pitman, N, Leigh, E.G., Chave, J., Terborgh, J., Foster, R.B., Nuñez{Nunez}, P., Aguilar, S., Valencia, R., Villa, G., Muller-Landau, H.C., Losos, E. & Hubbell, S.P. (2002). Beta-diversity in tropical forest trees. Science 295, 666--669.