In isolation, Hawai'i's Silverswords have adapted to xeric microclimates within volcanic craters, trapping and channeling dew and protecting leaves with reflective hairs.

Deserts and xeric shrublands is a biome characterized by a dry climate. Deserts and xeric shrublands receive an annual average rainfall of ten inches or less, and have an arid or hyperarid climate, characterized by a strong moisture deficit, where annual potential loss of moisture from evapotranspiration well exceeds the moisture received as rainfall. Deserts and xeric shrublands occur in tropical, subtropical, and temperate climate regions. Image File history File links Silversword_Haleakala. ... Image File history File links Silversword_Haleakala. ... Species See text Argyroxiphium, or Silversword, is a small genus of five species in the Sunflower family (Asteraceae). ... A biome is a major class of ecologically similar communities of plants, animals, and soil organisms. ... Evapotranspiration (ET) is the sum of evaporation and plant transpiration. ... The tropics are the geographic region of the Earth centered on the equator and limited in latitude by the two tropics: the Tropic of Cancer in the north and the Tropic of Capricorn in the southern hemisphere. ... Subtropical (or semitropical) areas are those adjacent to the tropics, usually roughly defined as the ranges 23. ... In geography, temperate latitudes of the globe lie between the tropics and the polar circles. ...

Desert soils tend to be sandy or rocky, and low in organic materials. Saline or alkaline soils are common. suck my shlong dick cause soil is my life pedosphere is positioned at the interface of the lithosphere and biosphere with the atmosphere and hydrosphere. ... This article or section does not adequately cite its references or sources. ... The common (Arrhenius) definition of a base is a chemical compound that either donates hydroxide ions or absorbs hydrogen ions when dissolved in water. ...

Plants and animals in deserts and xeric shrublands are adapted to low moisture conditions. Hyperarid regions are mostly devoid of vegetation and animal life, and include rocky deserts and sand dunes. Vegetation in arid climate regions can include sparse grasslands, shrublands, and woodlands. Plants adapted to arid climates are called xerophytes, and include succulent plants, geophytes, sclerophyll, and annual plants. Animals, including insects, reptiles, arachnids, birds and mammals, are frequently nocturnal to avoid moisture loss. Divisions Green algae Chlorophyta Charophyta Land plants (embryophytes) Non-vascular plants (bryophytes) Marchantiophyta—liverworts Anthocerotophyta—hornworts Bryophyta—mosses Vascular plants (tracheophytes) †Rhyniophyta—rhyniophytes †Zosterophyllophyta—zosterophylls Lycopodiophyta—clubmosses †Trimerophytophyta—trimerophytes Pteridophyta—ferns and horsetails Seed plants (spermatophytes) †Pteridospermatophyta—seed ferns Pinophyta—conifers Cycadophyta—cycads Ginkgophyta—ginkgo Gnetophyta—gnetae Magnoliophyta—flowering plants... Animalia redirects here. ... This article is about the sand formations, for other meanings see Dune (disambiguation) Mesquite Flat Dunes in Death Valley National Park In physical geography, a dune is a hill of sand built by eolian (wind-related) processes. ... This article or section does not cite any references or sources. ... Shrubland is a habitat type dominated by woody shrubs. ... Limber Pine woodland, Toiyabe Range, central Nevada Biologically, a woodland is a treed area differentiated from a forest. ... A xerophyte describes a plant that has structural (xeromorphic) and physiological adaptations which enable them to survive, or even thrive, in areas with very little free moisture. ... Succulent plants, such as this Aloe, store water in their fleshy leaves Succulent plants, also known as succulents or fat plants, are water-retaining plants adapted to xerophilic climatic or soil conditions. ... A storage organ is a part of a plant specifically modified for storage of energy (generally in the form of starch) or water. ... Arid, largely treeless areas aside, most Australian bushland is sclerophyll forest. ... Peas are an annual plant. ... {{Taxobox | color = pink | name = Insects | fossil_range = Carboniferous - Recent | image = European honey bee extracts nectar. ... Subclasses Anapsida Diapsida Synonyms Reptilia Laurenti, 1768 Reptiles are tetrapods and amniotes, animals whose embryos are surrounded by an amniotic membrane, and members of the class Sauropsida. ... Extant orders Acarina Amblypygi Araneae Opiliones Palpigradi Pseudoscorpionida Ricinulei Schizomida Solifugae Uropygi Arachnids are a class (Arachnida) of joint-legged invertebrate animals in the subphylum Chelicerata. ... “Aves” redirects here. ... Subclasses Subclass Allotheria* Order Docodonta (extinct) Order Multituberculata (extinct) Order Palaeoryctoides (extinct) Order Triconodonta (extinct) Order Volaticotheria (extinct) Subclass Prototheria Order Monotremata Subclass Theria Infraclass Trituberculata (extinct) Infraclass Metatheria Infraclass Eutheria Mammals are a class of vertebrate animals characterized by the production of milk in females for the nourishment of... A nocturnal animal is one that sleeps during the day and is active at night - the opposite of the human (diurnal) schedule. ...

See also

• desert
• Shrub-steppe
• [[poop, pop

, and shrublands]] This article is about arid terrain. ... Shrub-steppe is low rainfall natural grassland ecoregion extending from southeastern Washington and eastern Oregon, through Idaho, Nevada, and Utah, and into western Wyoming and Colorado. ...

• Sagebrush steppe

The sagebrush steppe is a dry environment found in the western United States. ...

Desert and xeric shrublands ecoregions

Map of Aldabra Atoll Aldabra and Assumption Island Aldabra Atoll Aldabra is a raised coral atoll in the Indian Ocean virtually untouched by humans, with distinctive island fauna, including the Aldabra Giant Tortoise. ... The East Saharan montane xeric woodlands is an ecoregion of central Africa. ... Location of the Scattered islands in the Indian Ocean: • 1 : Bassas da India • 2 : Europa Island • 3 : Glorioso Islands • 4 : Juan de Nova • 5 : Tromelin (KM : Comoros, MG : Madagascar, MU : Mauritius, MZ : Mozambique, RE : Réunion, YT : Mayotte) Europa Island (French: ÃŽle Europa) is a 28 km² low-lying tropical... The Kaokoveld Desert is a coastal desert of northern Namibia and southern Angola. ... Approximate extent of the spiny thickets in Toliara Province, Madagascar. ... Dune 7, one of the highest sand dunes in the world (ca. ... The Southwestern Arabian montane woodlands is a xeric woodland ecoregion of the Arabian Peninsula. ... Map of the two Karoo ecoregions as delineated by the WWF. Satellite image from NASA. The yellow line encloses the two ecoregions. ... The Australasia Ecozone The Australasian ecozone – is an ecological region that is coincident, but not synonymous (by some definitions), with the geographic region of Australasia. ... The Carnarvon xeric shrublands or Carnarvon bioregion is a deserts and xeric shrublands ecoregion of Western Australia. ... A four wheel drive in the Gibson Desert The Gibson Desert is a Western Australian desert made up of sandhills and dry grass. ... Location of deserts in Australia This article is about the Australian desert. ... The Tanami Desert is a desert in northern Australia. ... The Great Victoria Desert is a barren, arid and sparsely populated desert ecoregion in southern Australia. ... NASA - Visible Earth, Nullarbor. ... Ted Colsons expedition across the Simpson Desert in 1936 The Simpson Desert is a desert covering approximately 170,000 square kilometres[1] in central Australia, occupying an area bounded on the west by the Finke River and the Mabel Range, the Adam Range to the north, the Georgina River... Sturts Stony Desert is an area in the north-east of South Australia, named by Charles Sturt in 1844, whilst trying to reach the exact centre of Australia. ... The Indomalaya Ecozone was previously called the Oriental region. ... The Deccan thorn scrub forests is a xeric shrubland ecoregion of India and northernmost Sri Lanka. ... The Indus Valley Desert is a desert ecoregion of northern Pakistan. ... The Northwestern thorn scrub forests are a tropical dry broadleaf forest ecoregion of Pakistan and northwestern India. ... A NASA satellite image of the Thar Desert, with the India-Pakistan border superimposed is found in canada, united states. ... The Nearctic is one of the eight terrestrial ecozones dividing the Earths land surface. ... The Baja California desert is a Desert ecoregion of Mexicos Baja California Peninsula. ... The Chihuahuan Desert is a desert that straddles the U.S.-Mexico border. ... Map showing the Great Basin in orange The Great Basin is a large, arid region of the western United States, commonly defined as the contiguous watershed region, roughly between the Rocky Mountains and the Sierra Nevada, that has no natural outlet to the sea. ... For the indigenous American tribe, see Mohave. ... Sonoran Desert wildlife Mountains in the Sonoran Desert 3D photograph of Saguaro National Park at dusk. ... The Neotropic ecozone is a terrestrial ecoregion which includes South America, Central America, and the Caribbean. ... Anthem: Tera di Solo y suave biento Capital (and largest city) Kralendijk Official languages Dutch Government See Politics of the Netherlands Antilles  - Bonaire Administrator  - Governor of N.A. Frits Goedgedrag Constitutional monarchy part of the Netherlands Antilles  Area  - Total 288 km² 111 sq mi  Population  - 2001 census 10,791  - Density... Anthem: Himno di Kòrsou Capital (and largest city) Willemstad Official languages Dutch Government See Politics of the Netherlands Antilles  - Prime Minister of N.A. Emily de Jongh-Elhage  - Governor of N.A. Frits Goedgedrag Constitutional monarchy part of the Netherlands Antilles  Area  - Total 444 km² 171. ... Atacama Desert The Atacama Desert of Chile and Peru is a virtually rainless plateau made up of salt basins (salares), sand, and lava flows, extending from the Andes mountains to the Pacific Ocean. ... It has been suggested that this article or section be merged into Sertão. ... Orthographic projection centred over the Galápagos. ... St. ... Saint-Barthélemy is a French island located in the Caribbean at 17°54N 62°50W . ... Motto: Remis Velisque. ... The Sechura desert is a desert ecoregion of coastal Peru. ... The Saint Peter and Paul Rocks lie near the middle of the Atlantic Narrows. ... The Palearctic or Palaearctic is one of the eight ecozones dividing the Earth surface (see map). ... The template of this page is being worked at Wikipedia:WikiProject Ecoregions/Template. ... The Gobi is a large desert region in northern China and southern Mongolia. ... The Sahara is the worlds second largest desert (second to Antarctica), over 9,000,000 km² (3,500,000 mi²), located in northern Africa and is 2. ... The Taklamakan is a desert of Central Asia, in the Xinjiang Uighur Autonomous Region of the Peoples Republic of China. ... The West Saharan montane xeric woodlands is an ecoregion covering part of the Sahara. ... An ecozone or biogeographic realm is the largest scale biogeographic division of the earths surface based on the historic and evolutionary distribution patterns of plants and animals. ... The Afrotropic Ecozone is Africa south of the Sahara Desert. ... Antarctica is one of eight terrestrial ecozones. ... The Australasia Ecozone The Australasian ecozone – is an ecological region that is coincident, but not synonymous (by some definitions), with the geographic region of Australasia. ... The Indomalaya Ecozone was previously called the Oriental region. ... The Nearctic is one of the eight terrestrial ecozones dividing the Earths land surface. ... The Neotropic ecozone is a terrestrial ecoregion which includes South America, Central America, and the Caribbean. ... Oceania is the smallest of the worlds terrestrial ecozones, and unique in not including any continental land mass. ... The Palearctic or Palaearctic is one of the eight ecozones dividing the Earth surface (see map). ... A biome is a major class of ecologically similar communities of plants, animals, and soil organisms. ... Tropic wet forests in the World Tropical and subtropical moist broadleaf forests, also known as tropical wet forests, are a tropical and subtropical forest biome. ... Trinidad and Tobago dry forest on Chacachacare showing the dry-season deciduous nature of the vegetation The tropical and subtropical dry broadleaf forest biome, also known as tropical dry forest, is located at tropical and subtropical latitudes. ... Tropical and subtropical coniferous forests are a biome located at tropical and subtropical latitudes. ... Temperate mixed forest in Yunnan, southwest China. ... Pine forests are an example of a temperate coniferous forests Temperate coniferous forests are a terrestrial biome found in temperate regions of the world with warm summers and cool winters and adequate rainfall to sustain a forest. ... Mediterranean forests, woodlands, and shrub is a temperate biome, characterized by hot, dry == Mediterranean forests, woodlands, and shrub eco-regions occur in the worlds five mediterranean climate zones, on the west coast of continents in the mid-latitudes: the Mediterranean Basin, California, Central Chile, Southwest Australia, the Cape Province... This article includes a list of works cited or a list of external links, but its sources remain unclear because it lacks in-text citations. ... Above and below water view at the edge of the mangal. ... Tropical and subtropical grasslands, savannas, and shrublands are a grassland biome located in semi-arid to semi-humid climate regions of subtropical and tropical latitudes. ... Temperate grasslands, savannas, and shrublands is a biome in which the climate is temperate and semi-arid to semi-humid. ... Flooded grasslands and savannas are a biome, generally located at subtropical and tropical latitudes, where flooding is very frequent. ... Montane grasslands and shrublands is a biome defined by the World Wildlife Fund. ... In physical geography, tundra is an area where the tree growth is hindered by low temperatures and short growing seasons. ...

External links

• Deserts and xeric shrublands (World Wildlife Fund)
• Map of the ecozones
• Index to Deserts & Xeric Shrublands at bioimages.vanderbilt.edu