Oromediterranean cushion scrub of Sierra Nevada

Environmental conditions

Between 1,900 and 2,800 m, oromediterranean vegetation includes cushion scrub; broom scrub and juniper scrub occur on moderately developed soils, while scarce soil in high calcareous areas is associated with thorn scrub and cushion-forming thyme scrub.

Distribution and scope

The source places these formations in the oromediterranean belt of Sierra Nevada, between 1,900 and 2,800 m, and notes cushion scrub in elevated calcareous areas such as Dornajo and the headwaters of the Dúrcal River; independent monitoring recognizes high-mountain scrub.

Structure

The described mosaic combines pine forests and savin woodlands with shrubs and cushion scrub; its listed components include Vella spinosa, Erinacea anthyllis, Bupleurum spinosum, and Astragalus granatensis, as well as broom scrub and juniper scrub.

Ecological processes

The source relates community composition to soil development and substrate: broom scrub and juniper scrub become established on moderately developed soils, whereas scarce soil in high calcareous areas accompanies thorn scrub and cushion-forming thyme scrub.