The presence of the tropical trees Alchornea costaricensis and Anacardium excelsum with diameter at breast height equal or larger than 10 cm were recorded on along with environmental factors at Barro Colorado Island in Panama (Kindt and Coe 2005). These data were originally from (Pyke et al. 2001).
data(BCI.plant)A data frame with 43 observations on the following 9 variables.
site.no.A factor with levels C1 C2 C3 C4 p1 p10 p11 p12 p13 p14 p15 p16 p17 p18 p19 p2 p20 p21 p22 p23 p24 p25 p26 p27 p28 p29 p3 p30 p31 p32 p33 p34 p35 p36 p37 p38 p39 p4 p5 p6 p7 p8 p9
UTM.EUTM easting.
UTM.NUTM northing.
precipPrecipitation in mm/year.
elevElevation in m above sea level.
ageA categorical vector describing age.
geologyA factor describing geology with levels pT Tb Tbo Tc Tcm Tct Tgo Tl Tlc.
Alchornea.costaricensisPlant presence/absence.
Anacardium.excelsumPlant presence/absence.
Condit, R, Pitman, N, Leigh, E.G., Chave, J., Terborgh, J., Foster, R.B., 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.
Kindt, R. & Coe, R. (2005) Tree diversity analysis: A manual and software for common statistical methods for ecological and biodiversity studies from the BiodiversityR package.
Pyke CR, Condit R, Aguilar S and Lao S. (2001). Floristic composition across a climatic gradient in a neotropical lowland forest. Journal of Vegetation Science 12: 553-566.