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Due to the highly variable climatic regimes across the Great Plains, many aspects of climate change are not expected to affect all areas of the eco-region equally. In regards to precipitation, this means an exacerbation of extremes where dry areas in the south are expected to get drier and wetter areas in the north to get wetter.
A satellite image of the Sahara, the world's largest hot desert and third largest desert after Antarctica and the Arctic. Desert greening is the process of afforestation or revegetation of deserts for ecological restoration (biodiversity), sustainable farming and forestry, but also for reclamation of natural water systems and other ecological systems that support life.
Most of this ecoregion is occupied by farms and ranches, and cattle grazing has affected 75% of the Western short grasslands, particularly the southern portion. This overgrazing has led to an invasion of desert scrub plants from the southwest, such as mesquite. Despite this, 40% of the ecoregion is considered to be intact.
However, climate change adaptation to the drier conditions will be needed. [28] [29] Dave D. White of Arizona State University, the lead author of the Southwest Chapter of the Fifth National Climate Assessment to be published in 2023, called for "bold solutions that match the scale of the challenges," including agricultural water conservation ...
The Nama Karoo of Namibia has the world's richest desert fauna. [8] The Chihuahuan desert and Central Mexican matorral are the richest deserts in the Neotropics. [9] The Carnarvon xeric shrublands of Australia are a regional center for endemism. [1] The Sonoran and Baja deserts of Mexico are unusual desert communities dominated by giant ...
The probability of continued woody encroachment increases due to climate change. [194] The government of Namibia has recognised bush encroachment as a key challenge for the national economy and food safety. In its Fifth National Development Plan (NDP5), it stipulates that bush shall be thinned on 82.200 hectares per annum. [195]
Distichlis spicata thrives along coastlines and on salt flats and disturbed soils, as well as forest, woodland, montane, and desert scrub habitats. It can form dense monotypic stands, and it often grows in clonal colonies. Non-clonal populations tend to be skewed toward a majority of one sex or the other. The grass forms sod with its hearty ...
The dominant species in the steppe of Tierra del Fuego is the perennial grass Festuca gracillima. Other grasses include Poa atropidiformis, Trisetum species and Hordeum comosum. The most common plant in the valley floors and plains is Hordeum comosum, interspersed with Alopecurus antarticus, Phleum conmutatus, Poa pratensis and Agrosti species. [1]