eoo: Extent of Occurrence (EOO).

In red: IUCN Redlisting Tools

Extent of Occurrence (EOO).

Description

Calculates the Extent of Occurrence of a species based on either records or predicted distribution.

Usage

eoo(spData)

Arguments

spData

spData One of three options: 1) matrix of longitude and latitude (two columns) of each occurrence record; 2) matrix of easting and northing (two columns, e.g. UTM) of each occurrence record in meters; 3) RasterLayer object of predicted distribution (either 0/1 or probabilistic values).

Details

EOO is calculated as the minimum convex polygon covering all known or predicted sites for the species.

Value

A single value in km2 or a vector with lower confidence limit, consensus and upper confidence limit (probabilities 0.975, 0.5 and 0.025 respectively).

Examples

records = red.examples("red.records")
range = red.examples("red.range")
eoo(records)
eoo(range)

red documentation built on Sept. 9, 2023, 1:07 a.m.