lsm_l_pr function

PR (landscape level)

Patch richness (Diversity metric)

lsm_l_pr(landscape)

Arguments

• landscape: A categorical raster object: SpatRaster; Raster* Layer, Stack, Brick; stars or a list of SpatRasters.

Returns

tibble

Details

where $m$ is the number of classes

PR is a 'Diversity metric'. It is one of the simplest diversity and composition measures. However, because of its absolute nature, it is not comparable among landscapes with different total areas.

Units

None

Range

PR >= 1

Behaviour

Equals PR = 1 when only one patch is present and increases, without limit, as the number of classes increases

Examples

landscape <- terra::rast(landscapemetrics::landscape)
lsm_l_pr(landscape)

References

McGarigal K., SA Cushman, and E Ene. 2023. FRAGSTATS v4: Spatial Pattern Analysis Program for Categorical Maps. Computer software program produced by the authors; available at the following web site: https://www.fragstats.org