simberloff {asbio}R Documentation

Compilations of genus and species counts from Simberloff (1970)

Description

A compilation of taxonomic (species and genus) counts for a wide array of organism groups for island and associated mainland locations. Taken from Simberloff (1970).

Usage

data("simberloff")

Format

A data frame with 204 observations on the following 12 variables.

Location

Island and mainland location.

Designation

A factor with levels Island Mainland.

Hypothesized.source

Hypothesized mainland location for particular island location.

No.spp.

The number of species

Obs.S.G

Observed species/genus (S/G) ratio

E.S.G.

Expected S/G ratio, based on random sampling from mainland pool of species.

prop..obs..cogeners

The proportion of observed cogeners, only reported for bird species.

prop..exp..cogeners

The proportion of expected cogeners based on random sampling from the associated mainland pool of species, only reported for bird species.

Authority

Source of information for compilation.

Life.form

A factor with levels Ants Land birds Passerine birds Vascular plants.

Notes.1

Notes from Simberloff (1970)

Notes.2

Additional notes from Simberloff (1970)

Source

Simberloff, D. (1970) Taxonomic diversity of island biotas. Evolution 24, 23-47.


[Package asbio version 1.7 Index]