aoo: Area of Occupancy (AOO).

In red: IUCN Redlisting Tools

Area of Occupancy (AOO).

Description

Calculates the Area of Occupancy of a species based on either known records or predicted distribution.

Usage

aoo(spData)

Arguments

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

AOO is calculated as the area of all known or predicted cells for the species. The resolution will be 2x2km as required by IUCN.

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

range = red.examples("red.range")
aoo(range)

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