Numbers of bird species observed on 42 British Isles, including area, latitude information, distance from Britain and soil variation.
A data frame with 42 observations and 7 variables:
The name of the island
The surface area of the island, in square kilometer
Maximum elevation in meters
The number of different soil types found on the island
Midpoint of latitude range in degrees north
Distance in kilometers
Number of observed species
M.P. Johnson and D.S. Simberloff (1974). "Environmental Determinants of Island Species Numbers in the British Isles," Journal of Biogeography, Vol. 1, pp. 149-154
E.D. McCoy and E.F. Connor (1976). "Enviromnmental Determinants of Island Species Number in the British Isles: A Reconsideration," Journal of Biogeography, Vol. 3, pp. 381-382.
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