birds | R Documentation |
The data were originally derived from a study which investigated numbers of bird species in isolated islands of paramo vegetation in the northern Andes.
data(birds)
A data frame with 14 observations on the following 5 variables.
N
number of species
AR
area of island in thousands of square km
EL
elevation in thousands of m
Dec
distance from Ecuador in km
DNI
distance to the nearest island in km
F. Vuilleumier (1970), Insular biogeography in continental regions. I. The northern Andes of South America. The American Naturalist 104, 373–388
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