The number of species on an island is known to be related to the
island's area. Of interest is what other variables are also related
to the number of species, after island area is accounted for, and
whether the answer differs for native and non native species.
Usage
ex1220
Arguments
Format
A data frame with 30 observations on the following 8 variables.
Island
a character vector indicating the island
Total
total number of observed species
Native
number of native species
Area
area (km\(^2\))
Elev
elevation (m)
DistNear
distance from nearest island (km)
DistSc
distance from Santa Cruz (km)
AreaNear
area of nearest island (km\(^2\))
References
Johnson, M.P. and Raven, P.H. (1973). Species Number and Endemism: The
Galapagos Archipelago Revisited, Science179(4076):
893--895.