star_t_score

Description

The total species threat abatement score. Data is generated from the IUCN Red List of Threatened Species by calculating the proportion of species areas of habitat that overlap a pixel, weighted by species extinction risk and summed across all species.

Usage notes

Scores consider terrestrial amphibians, birds, mammals, and reptiles with Near Threatened or threatened (Vulnerable, Endangered, Critically Endangered) extinction risk category. More threatened species receive higher weighting. Scores are additive across any spatial scale. Calculations assume species areas of habitat represent true distributions, species are evenly distributed within those areas, and threats operate uniformly across areas of habitat. These assumptions can yield false negatives (missing locally present species) and false positives (showing species not present on the ground). High scores indicate higher overall species extinction risk and greater potential to reduce risk through threat abatement. Low scores do not indicate areas unimportant for biodiversity, but rather areas where threat abatement contributes less to lowering extinction risk. Consider rescaling the data to improve visualisation of the full distribution of values.