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

Includes algorithms to facilitate the assessment of extinction risk of species according to the IUCN (International Union for Conservation of Nature, see <https://iucn.org/> for more information) red list criteria.

Vasco V. Branco

IUCN Redlisting Tools

Pedro Cardoso

aoo function

<dl><dt>spData</dt>
<dd>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).</dd>
<dt>cellSize</dt>
<dd>A numeric value in km determining the side of the grid square used to calculate AOO.</dd></dl>

Arguments

Area of Occupancy (AOO). — aoo

<dl>

<dt>spData</dt>
<dd>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).</dd>


<dt>cellSize</dt>
<dd>A numeric value in km determining the side of the grid square used to calculate AOO.</dd>

</dl>

aoo: Area of Occupancy (AOO).

Description

Usage

Value

Arguments

Details

Examples