Metadata Sub-indicator 15.5.1.6. Índice de la Lista Roja (mamíferos)
Goal 15. Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity loss
Target 15.5. Take urgent and significant action to reduce the degradation of natural habitats, halt the loss of biodiversity and, by 2020, protect and prevent the extinction of threatened species
Indicator 15.5.1. Red List Index
Sub-indicator 15.5.1.6. Red List Index (mammals)
- Global
- National
The indicator measures theoretically and aggregately how far from extinction are mammal species present in Spain.
\[RLI^t=1 - \frac{\sum_{i}^{n}S_i\cdot W_i}{N\cdot W_{EX}}\]Where: \(S_it\)is the number of species for category i, \( w_i\)is the weight of category i (1 for ¿almost threatened¿ up to 5 ¿Extinct¿), \N\) is the total number of species considered and \(W_{EX}\)is the weight for category ¿Extinct¿. For the calculation of this indicator the wild species present in Spain are considered according to the data of the Spanish Inventory of Natural Heritage and Biodiversity for which its category of global IUCN threat has been determined. In order for year-on-year comparisons to be made, the indicator requires comparison of the same set of species each year. For this reason, when determining the category of threat of new species, the indicator is reviewed retrospectively, assuming that the most recent assessment applies since the first set of species was evaluated. \(W_{EX}\)Dollars_parentesis_3
Index
Anual sin determinar
By taxonomic group
Tier I
Yes
Estadística de Diversidad de Especies Silvestres (ISO code: 23033)
29/02/2024
IUCN