Hierarchy classification:

1. top of the aat hierarchies
2. Associated Concepts Facet
3. Associated Concepts (hierarchy name)
4. scientific concepts
5. physical sciences concepts
6. earth sciences concepts
7. biomes

Anotations

Scope note:

Biomes surrounding desert environments occurring where rainfall is less than 50 cm annually. Most deserts occur at low latitudes, although cold deserts occur elsewhere. Most deserts have a considerable amount of specialized vegetation, as well as specialized vertebrate and invertebrate animals.