galapagos: Galapagos species data

Description Format Source References Examples

Description

Johnson and Raven (1973) have presented data giving the number of species and related variables for 29 different islands in the Galapagos Archipelago.

Format

This data frame uses the island name as row labels and contains the following columns:

NS

Number of Species

ES

Number of endemic species (orrur only on that island)

Area

Surface area of island, hectares

Anear

Area of closest island, hectares

Dist

Distance to closest island, km

DistSC

Distance from Santa Cruz Island, km

Elevation

Elevation in m, missing values given as zero

EM

1 if elevation is observed, 0 if missing

Source

Johnson, M.P., and Raven, P.H. (1973). Species number and endemism: The Galapagos Archipelago revisited. Science, 179, 893-895.

References

Weisberg, S. (2005). Applied Linear Regression, 3rd edition. New York: Wiley, Problem 10.8.

Examples

1


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