Half of the world’s biomes have some cause for concern, either because they have little remaining low modified lands (6 biomes contain ≤ 20%), retain only a handful of low modified ecoregions (6 biomes have ≤ 10), or are vulnerable to fragmentation effects (4 biomes have 60-69% of low modified lands close to disturbed areas).
Notably, four biomes (tropical dry broadleaf forests, mangroves, tropical coniferous forests, and grasslands) have only 1 to 3 low modified ecoregions that remain.
Biomes are large ecological areas of the Earth’s surface with similar abiotic factors, such as temperature, climate, geology, soils, and vegetation. There are 14 terrestrial biomes (7 are forested and 7 are non-forested). For a map of biomes see: http://ecoregions2017.appspot.com/.