galapagos {GLMsData}

Gal\'apagos Island species data

Description

The number of species on the Gal\'apagos Islands

Usage

data(galapagos)

Format

A data frame containing 29 observation with the following 11 variables.

Island

the name of the island

Plants

the number of plant species; a numeric vector

PlantEnd

the number of endemic plant species; a numeric vector

Finches

the number of finch species; a numeric vector

FinchEnd

the number of endemic finch species; a numeric vector

FinchGenera

the number of finch genera; a numeric vector

Area

the area of each island in square kilometres; a numeric vector

Elevation

the maximum elevation of each island in metres; a numeric vector

Nearest

the distance to the nearest island; a numeric vector

StCruz

the distance to Santa Cruz Island in kilometres; a numeric vector

Adjacent

the area of adjacent island in square kilometres; a numeric vector

Details

The data give the number of plant species and related variables for 29 different islands. Counts are given for both the total number of species and the number of species that occur only in the Gal\'apagos (the endemics).

Note

Elevations for Baltra and Seymour obtained from web searches. Elevations for four other small islands obtained from large-scale maps.

Source

Michael P. Johnson and Peter H. Raven (1973) Species number and endemism: The Gal\'apagos Archipelago revisited. Science, 179(4076), 893–895.

Examples

   data(galapagos)
   summary(galapagos)