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Zeltnera Namophila
''Zeltnera namatophila'', the spring-loving centaury, is a rare species of flowering plant in the gentian family. It is endemic to the Amargosa Valley, in Nye County, southwestern Nevada. Distribution The plant is endemic to Ash Meadows, in the Amargosa Desert directly east of Death Valley National Park.USFWS''Centaurium namophilum'' Five Year Review.August 13, 2009. It has been recorded as being present in California in 1978, but no occurrences have been recently confirmed there. The plant grows in moist and wet soils in the ash meadows wetlands. The soil has a high clay content and a high pH, with salts remaining as water is evaporated in the desert air. The plant occurs in meadows of saltgrass (''Distichlis spicata'') and next to streams, springs, and seeps. Other plants in the area include Ash Meadows gumplant (''Grindelia fraxino-pratensis''), Emory baccharis (''Baccharis emoryi''), and Tecopa bird's beak (''Cordylanthus tecopensis''). Description ''Zeltnera namatophi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Janice C
Janice may refer to: * Janice (given name), a feminine given name (includes a list of people with the name) * ''Janice & Abbey'', a reality TV series * Processor codename of the Samsung Galaxy S Advance Android smartphone * Janice, Łódź Voivodeship (central Poland) * Janice, Lower Silesian Voivodeship (south-west Poland) * Janice, Rimavská Sobota District, a village in southern Slovakia * Janice, Mississippi, an unincorporated community in Perry County, Mississippi, United States See also * Janis (other) Janis may refer to: As a first name *Janis Amatuzio (born 1950), American forensic pathologist *Janis Antonovics (born 1942), Latvian-British-American biologist *Janis Babson (1950–1961), Canadian child, organ donation *Janis Carter (1913–19 ... {{disambig, geo cs:Seznam vedlejších postav v Přátelích#Janice Litman Goralnik fi:Luettelo televisiosarjan Frendit hahmoista#Janice sv:Vänner#Janice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grindelia Fraxino-pratensis
''Grindelia fraxinipratensis'', common name Ash Meadows gumweed, is a North American species of flowering plants in the family Asteraceae. It is native to the southwestern United States, in Mojave Desert regions in Nye County in Nevada and Inyo County in California. Some of the Nevada populations (including the type locality) lie inside the Nevada Test Site of the United States Atomic Energy Commission Some sources spell the name as ''G. fraxino-pratensis''. ''Grindelia fraxinipratensis'' is the accepted spelling according to the International Code of Nomenclature. ''Grindelia fraxinipratensis'' grows in meadows and on the borders of woodlands. It is a biennial or perennial herb growing tall, erect in form, brown or reddish, and hairless and oily. It grows from a thick underground caudex atop a woody taproot. The dark green leaves are up to long, widely lance-shaped or oblong, sometimes toothed near the tips, and studded with visible resin glands. The inflorescence bears o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grazing
In agriculture, grazing is a method of animal husbandry whereby domestic livestock are allowed outdoors to roam around and consume wild vegetations in order to convert the otherwise indigestible (by human gut) cellulose within grass and other forages into meat, milk, wool and other animal products, often on land unsuitable for arable farming. Farmers may employ many different strategies of grazing for optimum production: grazing may be continuous, seasonal, or rotational within a grazing period. Longer rotations are found in ley farming, alternating arable and fodder crops; in rest rotation, deferred rotation, and mob grazing, giving grasses a longer time to recover or leaving land fallow. Patch-burn sets up a rotation of fresh grass after burning with two years of rest. Conservation grazing proposes to use grazing animals to improve the biodiversity of a site, but studies show that the greatest benefit to biodiversity comes from removing grazing animals from the landscape. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cattle
Cattle (''Bos taurus'') are large, domesticated, cloven-hooved, herbivores. They are a prominent modern member of the subfamily Bovinae and the most widespread species of the genus ''Bos''. Adult females are referred to as cows and adult males are referred to as bulls. Cattle are commonly raised as livestock for meat (beef or veal, see beef cattle), for milk (see dairy cattle), and for hides, which are used to make leather. They are used as riding animals and draft animals ( oxen or bullocks, which pull carts, plows and other implements). Another product of cattle is their dung, which can be used to create manure or fuel. In some regions, such as parts of India, cattle have significant religious significance. Cattle, mostly small breeds such as the Miniature Zebu, are also kept as pets. Different types of cattle are common to different geographic areas. Taurine cattle are found primarily in Europe and temperate areas of Asia, the Americas, and Australia. Zebus (also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mustang (horse)
The mustang is a free-roaming horse of the Western United States, descended from horses brought to the Americas by the Spanish. Mustangs are often referred to as wild horses, but because they are descended from once-domesticated animals, they are actually feral horses. The original mustangs were Colonial Spanish horses, but many other breeds and types of horses contributed to the modern mustang, now resulting in varying phenotypes. Some free-roaming horses are relatively unchanged from the original Spanish stock, most strongly represented in the most isolated populations. In 1971, the United States Congress recognized that "wild free-roaming horses and burros are living symbols of the historic and pioneer spirit of the West, which continue to contribute to the diversity of life forms within the Nation and enrich the lives of the American people". The free-roaming horse population is managed and protected by the U.S. Bureau of Land Management (BLM). Controversy surrounds the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Groundwater
Groundwater is the water present beneath Earth's surface in rock and soil pore spaces and in the fractures of rock formations. About 30 percent of all readily available freshwater in the world is groundwater. A unit of rock or an unconsolidated deposit is called an aquifer when it can yield a usable quantity of water. The depth at which soil pore spaces or fractures and voids in rock become completely saturated with water is called the water table. Groundwater is recharged from the surface; it may discharge from the surface naturally at springs and seeps, and can form oases or wetlands. Groundwater is also often withdrawn for agricultural, municipal, and industrial use by constructing and operating extraction wells. The study of the distribution and movement of groundwater is hydrogeology, also called groundwater hydrology. Typically, groundwater is thought of as water flowing through shallow aquifers, but, in the technical sense, it can also contain soil moisture, perma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Table
The water table is the upper surface of the zone of saturation. The zone of saturation is where the pores and fractures of the ground are saturated with water. It can also be simply explained as the depth below which the ground is saturated. The water table is the surface where the water pressure head is equal to the atmospheric pressure (where gauge pressure = 0). It may be visualized as the "surface" of the subsurface materials that are saturated with groundwater in a given vicinity. The groundwater may be from precipitation or from groundwater flowing into the aquifer. In areas with sufficient precipitation, water infiltrates through pore spaces in the soil, passing through the unsaturated zone. At increasing depths, water fills in more of the pore spaces in the soils, until a zone of saturation is reached. Below the water table, in the phreatic zone (zone of saturation), layers of permeable rock that yield groundwater are called aquifers. In less permeable soils, such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limiting Factor
A limiting factor is a variable of a system that causes a noticeable change in output or another measure of a type of system. The limiting factor is in a pyramid shape of organisms going up from the producers to consumers and so on. A factor not limiting over a certain domain of starting conditions may yet be limiting over another domain of starting conditions, including that of the factor. Overview The identification of a factor as limiting is possible only in distinction to one or more other factors that are non-limiting. Disciplines differ in their use of the term as to whether they allow the simultaneous existence of more than one limiting factor which (may then be called "co-limiting"), but they all require the existence of at least one non-limiting factor when the terms are used. There are several different possible scenarios of limitation when more than one factor is present. The first scenario, called ''single limitation'' occurs when only one factor, the one with maximum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrology
Hydrology () is the scientific study of the movement, distribution, and management of water on Earth and other planets, including the water cycle, water resources, and environmental watershed sustainability. A practitioner of hydrology is called a hydrologist. Hydrologists are scientists studying earth or environmental science, civil or environmental engineering, and physical geography. Using various analytical methods and scientific techniques, they collect and analyze data to help solve water related problems such as environmental preservation, natural disasters, and water management. Hydrology subdivides into surface water hydrology, groundwater hydrology (hydrogeology), and marine hydrology. Domains of hydrology include hydrometeorology, surface hydrology, hydrogeology, drainage-basin management, and water quality, where water plays the central role. Oceanography and meteorology are not included because water is only one of many important aspects within those fields. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bureau Of Land Management
The Bureau of Land Management (BLM) is an agency within the United States Department of the Interior responsible for administering federal lands. Headquartered in Washington DC, and with oversight over , it governs one eighth of the country's landmass. President Harry S. Truman created the BLM in 1946 by combining two existing agencies: the General Land Office and the Grazing Service. The agency manages the federal government's nearly of subsurface mineral estate located beneath federal, state and private lands severed from their surface rights by the Homestead Act of 1862. Most BLM public lands are located in these 12 western states: Alaska, Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington and Wyoming. The mission of the BLM is "to sustain the health, diversity, and productivity of the public lands for the use and enjoyment of present and future generations." Originally BLM holdings were described as "land nobody wanted" because home ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centaurium Namophilum 2
''Centaurium'' (centaury) is a genus of 20 species in the gentian family (Gentianaceae), tribe Chironieae, subtribe Chironiinae. The genus was named after the centaur Chiron, famed in Greek mythology for his skill in medicinal herbs. It is distributed across Europe and into Asia. Until 2004, ''Centaurium'' was given a much wider circumscription, comprising about 50 species ranging across Europe, Asia, the Americas, Australasia and the Pacific. However this circumscription was polyphyletic, so in 2004 the genus was split in four, being ''Centaurium'' sensu stricto, ''Zeltnera'', ''Gyrandra'' and ''Schenkia''. Species * ''Centaurium barrelieri'' (Duf.) F. Q. & Rothm. * ''Centaurium bianoris'' (Sennen) Sennen * '' Centaurium calycosum'' (Buckley) Fernald * ''Centaurium capense'' Broome * ''Centaurium centaurioides'' (Roxb.) Rolla Rao & Hemadri * ''Centaurium chloodes'' (Brot.) Samp. * ''Centaurium davyi'' (Jeps.) Abrams * ''Centaurium erythraea'' Rafn * ''Centaurium exaltatum' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soil Seed Bank
The soil seed bank is the natural storage of seeds, often dormant, within the soil of most ecosystems. The study of soil seed banks started in 1859 when Charles Darwin observed the emergence of seedlings using soil samples from the bottom of a lake. The first scientific paper on the subject was published in 1882 and reported on the occurrence of seeds at different soil depths. Weed seed banks have been studied intensely in agricultural science because of their important economic impacts; other fields interested in soil seed banks include forest regeneration and restoration ecology. Background Many taxa have been classified according to the longevity of their seeds in the soil seed bank. Seeds of ''transient'' species remain viable in the soil seed bank only to the next opportunity to germinate, while seeds of ''persistent'' species can survive longer than the next opportunity—often much longer than one year. Species with seeds that remain viable in the soil longer than f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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