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Xeric shrublands can experience woody plant encroachment, which is the thickening of bushes and shrubs at the expense of grasses. [5] This process is often caused by unsustainable land management practices, such as overgrazing and fire suppression, but can also be a consequence of climate change.
A xerophyte (from Ancient Greek ξηρός (xērós) 'dry' and φυτόν (phutón) 'plant') is a species of plant that has adaptations to survive in an environment with little liquid water. Examples of xerophytes include cacti , pineapple and some gymnosperm plants.
Vegetation in the xerophytic coastal and subcoastal scrublands reaches a height of 6 m (20 ft) and is dominated by palms and succulents, especially cacti.Common evergreen plants include cafecillo (Bourreria virgata), mostacilla (Capparis cynophallophora), guairaje (Eugenia foetida), Bursera glauca, B. cubana, Croton spp., Cordia spp., Calliandra colletioides, Caesalpinia spp., Acacia spp ...
Cucurbita foetidissima is a tuberous xerophytic plant found in the central and southwestern United States and northern Mexico. [3] It has numerous common names, but is most commonly called the buffalo gourd in English. The type specimen was collected from Mexico by Alexander von Humboldt and Aimé Bonpland sometime before 1817. [4]
Sand dunes in the Sahara Desert. Desert ecology is the study of interactions between both biotic and abiotic components of desert environments. A desert ecosystem is defined by interactions between organisms, the climate in which they live, and any other non-living influences on the habitat.
It is defined primarily by the dominance of dwarf (less than 1 m high) shrubs with a co-dominance of grasses especially towards the north-east and east where it grades into the grassland biome of the highveld and the Eastern Midlands. [36] The shrubs and grasses are deciduous, mainly in response to the irregular rainfall.
The vegetation is similar to the dry deciduous forests to the north, but includes more dry-adapted, xerophytic species. Forests and open-canopied woodlands, reaching 15 metres (49 ft) in height, contain trees and shrubs of the families Burseraceae , Euphorbiaceae , Fabaceae , and Sapindaceae .
The plant species of the California coastal sage and chaparral ecoregion are diverse, with high endemism. [2] The main plant communities are coastal sage scrub , California coastal prairie , chamise chaparral , southern oak woodland, pine forests, riparian woodland, and salt marshes .