Habitat definition
Desert habitat is habitat defined by persistent water deficit and biological adaptations to scarce or unpredictable moisture. The category describes a broad ecological pattern, so local examples may contain several communities and transitional zones.
The boundary can move over time as fire, flooding, grazing, succession, erosion, or climate alters the balance among vegetation types. It can also be gradual, creating ecotones with characteristics of steppe, shrubland, dune. These dynamic edges should not be mistaken for poor-quality or incomplete habitat.
A consistent definition also prevents broad scenery terms from being mistaken for evidence that the habitat occupies an entire park.