BCI: Barro Colorado Island Tree Counts

In vegan: Community Ecology Package

Description

Tree counts in 1-hectare plots in the Barro Colorado Island and associated site information.

Usage

data(BCI)
data(BCI.env)

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. The names were updated against http://www.theplantlist.org in Jan 2014 (see ChangeLog 2.1-41 for details) which allows matching 206 of species against http://datadryad.org/resource/doi:10.5061/dryad.63q27 (Zanne et al., 2014).

For BCI.env, a data frame with 50 plots (rows) and six site variables:

UTM.EW:

UTM coordinates (zone 17N) East-West

UTM.NS:

UTM coordinates (zone 17N) North-South

Precipitation:

Precipitation in mm per year

Elevation:

Elevation in m above sea level

Age.cat:

Forest age category

Geology:

The Underlying geological formation

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 BCI.env for the coordinates.

A full description of the site information in BCI.env is given in Pyke et al (2001)

Source

http://www.sciencemag.org/cgi/content/full/295/5555/666/DC1

References

Condit, R, Pitman, N, Leigh, E.G., Chave, J., Terborgh, J., Foster, R.B., Nuñez, 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.

Zanne A.E., Tank D.C., Cornwell, W.K., Eastman J.M., Smith, S.A., FitzJohn, R.G., McGlinn, D.J., O’Meara, B.C., Moles, A.T., Reich, P.B., Royer, D.L., Soltis, D.E., Stevens, P.F., Westoby, M., Wright, I.J., Aarssen, L., Bertin, R.I., Calaminus, A., Govaerts, R., Hemmings, F., Leishman, M.R., Oleksyn, J., Soltis, P.S., Swenson, N.G., Warman, L. & Beaulieu, J.M. (2014) Three keys to the radiation of angiosperms into freezing environments. Nature doi:10.1038/nature12872 (published online Dec 22, 2013).

Pyke, C. R., Condit, R., Aguilar, S., & Lao, S. (2001). Floristic composition across a climatic gradient in a neotropical lowland forest. Journal of Vegetation Science 12, 553–566. doi:10.2307/3237007

Examples

data(BCI, BCI.env)
head(BCI.env)

Example output

Loading required package: permute
Loading required package: lattice
This is vegan 2.4-3
  UTM.EW  UTM.NS Precipitation Elevation Age.cat Geology  Habitat Stream EnvHet
1 625754 1011569          2530       120      c3      Tb OldSlope    Yes 0.6272
2 625754 1011669          2530       120      c3      Tb   OldLow    Yes 0.3936
3 625754 1011769          2530       120      c3      Tb   OldLow     No 0.0000
4 625754 1011869          2530       120      c3      Tb   OldLow     No 0.0000
5 625754 1011969          2530       120      c3      Tb OldSlope     No 0.4608
6 625854 1011569          2530       120      c3      Tb   OldLow     No 0.0768

vegan documentation built on May 2, 2019, 5:51 p.m.