Environment · Glossary
Mammal species, threatened
EN.MAM.THRD.NO
Definition
Mammal species are mammals excluding whales and porpoises. Threatened species are the number of species classified by the IUCN as endangered, vulnerable, rare, indeterminate, out of danger, or insufficiently known.
Methodology for Environment indicators
Environmental indicators cover emissions, land use, biodiversity, and natural resources. Emissions data is often produced by international scientific consortia (EDGAR, Global Carbon Project) and typically lags 2–3 years due to the complexity of fuel- and process-level accounting. Per-capita metrics reveal a different story than absolute totals — small wealthy countries can have high per-capita emissions while contributing little to the global total.
How to interpret
- Always check the unit and reporting year before comparing values across countries.
- NULL or "Not available" means the World Bank did not publish a value — we never estimate.
- Year-over-year changes can be driven by methodology updates, not just real economic shifts.
Related indicators in Environment
- Population density (people per sq. km of land area)
- Rural population living in areas where elevation is below 5 meters (% of total population)
- Plant species (higher), threatened
- Population living in areas where elevation is below 5 meters (% of total population)
- Bird species, threatened
- Fish species, threatened
- Urban population living in areas where elevation is below 5 meters (% of total population)
- Terrestrial protected areas (% of total land area)