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Creosote Bush Scrub
Creosote bush scrub is a North American desert vegetation type (or biome) of sparsely but evenly spaced desert plants dominated by creosote bush (''Larrea tridentata'') and its associates. Its visual characterization is of widely spaced shrubs that are somewhat evenly distributed over flat or relatively flat desert areas that receive between 2 and 8 inches of rain each year. It covers the majority of the flat desert floor and relatively flat alluvial fans in the Mojave Desert, Chihuahuan Desert, and Sonoran Desert. The dominant plants that typify this vegetation type are creosote bush (''Larrea tridentata'') and its associates, white bur-sage (''Ambrosia dumosa''), brittlebush (''Encelia farinosa'', ''Encelia actoni'', ''Encelia virginensis''), cheese-bush (''Ambrosia salsola''), Mojave yucca (''Yucca schidigera''), silver cholla cactus (''Cylindropuntia echinocarpa''), and beavertail cactus (''Opuntia basilaris ''Opuntia basilaris'', the beavertail cactus or beavertail pricklype ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vegetation Type
Vegetation classification is the process of classifying and mapping the vegetation over an area of the earth's surface. Vegetation classification is often performed by state based agencies as part of land use, resource management, resource and environmental management, environmental management. Many different methods of vegetation classification have been used. In general, there has been a shift from structural classification used by forestry for the mapping of timber resources, to floristic community mapping for biodiversity management. Whereas older forestry-based schemes considered factors such as height, species and density of the woody canopy, floristic community mapping shifts the emphasis onto ecological factors such as climate, soil type and floristic associations. Classification mapping is usually now done using geographic information systems (GIS) software. Classification schemes Following, some important classification schemes. Köppen (1884) Although this scheme is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encelia Actoni
''Encelia actoni'', also known by the common names Acton brittlebush and Acton encelia, is a species of flowering plant in the family Asteraceae. It is sometimes misspelled ''Encelia actonii''. Distribution and habitat The plant is native to southern California and neighboring areas of Nevada in the U.S. and Baja California in México. It grows in various types of open habitat, including deserts, chaparral, and grasslands. It is found in the Mojave Desert, Sonoran Deserts, Peninsular Ranges, Transverse Ranges, San Joaquin Valley, and southern Sierra Nevada. The species was named for the community of Acton in Southern California, located in an ecotone of the Mojave Desert ecoregion and of the montane chaparral and woodlands in the San Gabriel Mountains. Description ''Encelia actoni'' is a multi−branched perennial shrub, reaching in height. The branches are lined with oval to roughly triangular leaves a few centimeters long, that are gray-green and woolly in texture. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morris Publishing
Morris Communications, headquartered in Augusta, Georgia, is a privately held media company with diversified holdings that include magazine publishing, outdoor advertising, book publishing and distribution, visitor publications, and online services. Morris Communications is the parent company to Morris Media Network. Morris Media Network consists of city magazines and special interest magazines including travel. Morris brands include Alaska Magazine, American Angler, Skirt!, The Milepost, Western Horseman, and the Where series for travelers. Morris Communications is separate from Morris Multimedia, which was founded by Charles H. Morris, a member of the same family that founded Morris Communications. History William S. Morris Jr. began working in the media industry in 1929 when he got a job as a bookkeeper at The ''Augusta Chronicle''. He and his wife bought stock in the paper in 1945 and founded Southeastern Newspapers, Inc. They bought the remaining shares of the ''Chroni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opuntia Basilaris
''Opuntia basilaris'', the beavertail cactus or beavertail pricklypear, is a cactus species found in the southwest United States. It occurs mostly in the Mojave, Anza-Borrego, and Colorado Deserts, as well as in the Colorado Plateau and northwest Mexico. It is also found throughout the Grand Canyon and Colorado River region as well as into southern Utah and Nevada, and in the western Arizona regions along the Lower Colorado River Valley. Description ''Opuntia basilaris'' is a medium-sized to small prickly pear cactus tall, with pink to rose colored flowers. A single plant may consist of hundreds of fleshy, flattened pads. These are more or less blue-gray, depending on variety, long and less than wide and thick. They are typically spineless, but as is typical for ''Opuntia'' species, have many small barbed bristles, called glochids, that easily penetrate the skin. ''Opuntia basilaris'' blooms from spring to early summer. Taxonomy One of the first known descriptions of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cylindropuntia Echinocarpa
''Cylindropuntia echinocarpa'' is a species of cactus known by the common names silver cholla, golden cholla, and Wiggins' cholla. It was formerly named ''Opuntia echinocarpa''.USDA: ''Cylindropuntia echinocarpa'' . accessed 3.23.2013 Distribution and habitat ''Cylindropuntia echinocarpa'' is native to the and Northwestern Mexico, where it can be found the , the |
Yucca Schidigera
''Yucca schidigera'', also known as the Mojave yucca or Spanish dagger, is a flowering plant native to the southwest deserts of North America. Description ''Yucca schidigera'' is a small evergreen tree growing to tall, with a dense crown of spirally arranged bayonet-like leaves on top of a conspicuous basal trunk. The bark is gray-brown, being covered with brown dead leaves near the top, becoming irregularly rough and scaly-to-ridged closer to the ground. The leaves are long and broad at the base, concavo-convex, thick, very rigid, and yellow-green to blue-green in color. The flowers are white, sometimes with a purple tinge, long (rarely to 7.5 cm), bell-shaped and segmented into six parts; they are produced in a compact, bulbous cluster tall at the top of the stem. The fruit is an elongate berry, up to long. Distribution and habitat The plant is native to the Mojave Desert, Chihuahuan Desert and Sonoran Desert of southeastern California, Baja California, New Mexi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ambrosia Salsola
''Ambrosia salsola'', commonly called cheesebush, winged ragweed, burrobush, white burrobrush, and desert pearl, is a species of perennial shrub in the family Asteraceae native to deserts of the southwestern United States and northwestern Mexico.Mojave Desert Wildflowers, Pam MacKay, 2nd Ed. 2013, p. 263 This species, notable for its foul smell, easily hybridizes with the white bur-sage (''Ambrosia dumosa''). Range and habitat It is common on sandy desert flats, desert dry washes, and is weedy in disturbed sites in creosote bush scrub, shadscale scrub, Joshua tree woodland, and Pinyon juniper woodland, ranging from Inyo County, California, to northwestern Mexico. It grows in sandy and gravelly soil, and sometimes on lava formations at elevations of . It is native to the southwestern United States (Arizona, California, Nevada, Utah) and northwestern Mexico (Sonora, Baja California, Baja California Sur), where it is a common plant of the local deserts, where it thrives on sandy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encelia Virginensis
''Encelia virginensis'' is a North American species of flowering plants in the family Asteraceae known by the common name Virgin River brittlebush. This shrub is native to the southwestern United States and northwestern Mexico, particularly the Mojave Desert and the Sonoran Desert. It has been found in Baja California, southern California, Nevada, Arizona, southwestern Utah, and southwestern New Mexico. ''Encelia virginensis'' is a bushy, sprawling shrub reaching heights between 100 and 150 cm (40-60 inches). It has many branches, with the younger parts hairy and the older stems developing a thickened bark. The gray-green, fuzzy to hairy foliage may be sparse, appearing pale because of the presence of many small hairs on the surface. Atop many erect, hairy stems are solitary daisy-like flower heads with 11 to 21 ray florets which are generally yellow, and a center of yellow disc florets. The fruit is an achene 5 to 8 millimeters long and usually lacking a pappus. ;Varieties ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encelia Farinosa
''Encelia farinosa'' (commonly known as brittlebush, brittlebrush, or incienso), is a common desert shrub of the southwestern United States and northern Mexico. It has a variety of historical uses. Description Brittlebush grows up to tall, with fragrant leaf, leaves long, Leaf shape, ovate to deltoid, and silvery tomentose. Arranged in loose panicles above the leafy stems, the Pseudanthium, capitula are in diameter. Each has 8–18 orange-yellow ray florets, in length, and yellow or purple-brown disc florets. The fruit measures and no Pappus (flower structure), pappus is visible. During dry seasons the plant goes drought deciduous, shedding all of its foliage, relying on the water stored in its thick stems. ''Encelia californica'' is similar, but has only one flower head per stalk. Chemistry The leaves contain 3-Acetyl-6-methoxybenzaldehyde. Taxonomy Varieties Two varieties of ''E. farinosa'' are recognized by ''Flora of North America''. *''Encelia farinosa'' var. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biome
A biome () is a biogeographical unit consisting of a biological community that has formed in response to the physical environment in which they are found and a shared regional climate. Biomes may span more than one continent. Biome is a broader term than habitat and can comprise a variety of habitats. While a biome can cover large areas, a microbiome is a mix of organisms that coexist in a defined space on a much smaller scale. For example, the human microbiome is the collection of bacteria, viruses, and other microorganisms that are present on or in a human body. A biota is the total collection of organisms of a geographic region or a time period, from local geographic scales and instantaneous temporal scales all the way up to whole-planet and whole-timescale spatiotemporal scales. The biotas of the Earth make up the biosphere. Etymology The term was suggested in 1916 by Clements, originally as a synonym for '' biotic community'' of Möbius (1877). Later, it gained its c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ambrosia Dumosa
''Ambrosia dumosa'', the burro-weed or white bursage, a North American species of plants in the family Asteraceae. It is a common constituent of the creosote-bush scrub community throughout the Mojave desert of California, Nevada, and Utah and the Sonoran Desert of Arizona and northwestern Mexico (Baja California, Baja California Sur, Sonora, Chihuahua). ''Ambrosia dumosa'' has been studied to determine allelopathic interactions with creosote bush, ''Larrea tridentata'', which produces a chemical that inhibits the growth of ''A. dumosa.'' Other studies have suggested that ''A. dumosa'' roots produce a chemical that causes them to grow away from conspecific roots, preventing competition for water resources. In addition to burro-weed, ''A. dumosa'' is also commonly called white bursage, and burrobush. Description ''Ambrosia dumosa'', a form of ragweed, is a highly branched shrub 20 to 90 cm in height. The younger stems are covered with soft gray-white hairs. Approximately ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonoran Desert
The Sonoran Desert ( es, Desierto de Sonora) is a desert in North America and ecoregion that covers the northwestern Mexican states of Sonora, Baja California, and Baja California Sur, as well as part of the southwestern United States (in Arizona and California). It is the hottest desert in both Mexico and the United States. It has an area of . In phytogeography, the Sonoran Desert is within the Sonoran Floristic province of the Madrean Region of southwestern North America, part of the Holarctic realm of the northern Western Hemisphere. The desert contains a variety of unique endemic plants and animals, notably, the saguaro (''Carnegiea gigantea'') and organ pipe cactus (''Stenocereus thurberi''). The Sonoran Desert is clearly distinct from nearby deserts (e.g., the Great Basin, Mojave, and Chihuahuan deserts) because it provides subtropical warmth in winter and two seasons of rainfall (in contrast, for example, to the Mojave's dry summers and cold winters). This creates an ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
