Sekhukhuneland or Sekukuniland ( Afrikaans : Sekoekoeniland ) is a natural region in north-east South Africa , located in the historical Transvaal zone, former Transvaal Province , also known as Bopedi (meaning “land of Bapedi”). The region is named after the 19th-century King, Sekhukhune I .
97-739: This region is mainly covered by savannah grassland and was inhabited traditionally by the Bapedi in an area stretching across central and northern Transvaal. Sekhukhuneland lies in present-day Limpopo and Mpumalanga provinces, between the Olifants River (Lepelle) and its tributary the Steelpoort River (Tubatse); bordered on the east by the Drakensberg Range , and crossed by the Thaba Ya Sekhukhune in
194-624: A broad spatial scale. Because plant productivity is limited by grassland precipitation, carbon stocks are highest in regions where precipitation is heaviest, such as the high grass prairie in the humid temperate region of the United States. Similarly, as annual temperatures rise, grassland carbon stocks decrease due to increased evapotranspiration . Grasslands have suffered large losses of organic carbon due to soil disturbances, vegetation degradation, fires, erosion, nutrient deficiencies, and water shortages. The type, frequency and intensity of
291-428: A discount in biodiversity as faster-growing plants outcompete others. A study of a California grassland found that global change may speed reductions in diversity and forb species are most prone to this process. Misguided afforestation efforts, for example as part of the global effort to increase carbon sequestration, can harm grasslands and their core ecosystem services. Forest centric restoration efforts can create
388-623: A fauna resembling its position in the dry deserts with temperature extremes. The western continental coast of the U.S., just as the East Coast, varies from a colder-to-warmer climate from north to south. Few species live throughout the entire West Coast, however, there are some, including the bald eagle that inhabits both the Alaskan Aleutian Islands and the California Channel Islands . In most of
485-523: A higher amount of xerothermic grasslands occurred in the Mediterranean area. Within temperate Europe, the range of types is quite wide and also became unique due to the exchange of species and genetic material between different biomes. The semi-natural grasslands first appeared when humans started farming. So for the use of agriculture, forests got cleared in Europe. Ancient meadows and pastures were
582-414: A myth of the west which has shaped much of American popular culture since the late 19th century. Writers as diverse as Bret Harte and Zane Grey celebrated or derided cowboy culture, while artists such as Frederic Remington created western art as a method of recording the expansion into the west. The American cinema , in particular, created the genre of the western movie , which, in many cases, use
679-884: A national issue, agencies of the federal government own and manage vast areas of land. (The most important among these are the National Park Service and the Bureau of Land Management within the Interior Department , and the U.S. Forest Service within the Agriculture Department .) National parks are reserved for recreational activities such as fishing , camping , hiking , and boating , but other government lands also allow commercial activities like ranching , logging , and mining . In recent years, some local residents who earn their livelihoods on federal land have come into conflict with
776-463: A possible shift in the popular understanding of the West as a region in the early 1990s, historian Walter Nugent conducted a survey of three groups of professionals with ties to the region: a large group of Western historians (187 respondents), and two smaller groups, 25 journalists and publishers and 39 Western authors. A majority of the historian respondents placed the eastern boundary of the West east of
873-522: A range of marketed and non-marketed ecosystem services that are fundamental to the livelihoods of an estimated one billion people globally. Grasslands hold about twenty percent of global soil carbon stocks. Herbaceous (non-wooded) vegetation dominates grasslands and carbon is stored in the roots and soil underground. Above-ground biomass carbon is relatively short-lived due to grazing, fire, and senescence . Grassland species have an extensive fibrous root system, with grasses often accounting for 60-80% of
970-489: A result of human activity. Hunting cultures around the world often set regular fires to maintain and extend grasslands and prevent fire-intolerant trees and shrubs from taking hold. The tallgrass prairies in the U.S. Midwest may have been extended eastward into Illinois , Indiana , and Ohio by human agency. Much grassland in northwest Europe developed after the Neolithic Period when people gradually cleared
1067-578: A sharp decline in citrus production in Arizona. Many varieties of chile peppers are grown in the valleys of New Mexico . Starting in 1902, Congress passed a series of acts authorizing the establishment of the United States Bureau of Reclamation to oversee water development projects in seventeen western states. During the first half of the 20th century, dams and irrigation projects provided water for rapid agricultural growth throughout
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#17327805028591164-401: A total 2020 population of 78,588,572. The West is one of the most sparsely settled areas in the United States with 49.5 inhabitants per square mile (19.1 inhabitants/km ). Only Texas with 78.0 inhabitants/sq mi (30.1 inhabitants/km ), Washington with 86.0 inhabitants/sq mi (33.2 inhabitants/km ), and California with 213.4 inhabitants/sq mi (82.4 inhabitants/km ) exceed
1261-754: A volcano in Washington , is also over 14,000 feet (4,300 m). Mount St. Helens , a volcano in the Cascades , erupted explosively in 1980 . A major volcanic eruption at Mount Mazama around 4860 BC formed Crater Lake . These mountain ranges see heavy precipitation, capturing most of the moisture that remains after the Coast Ranges, and creating a rain shadow to the east forming vast stretches of arid land. These dry areas encompass much of Nevada , Utah , and Arizona . The Mojave Desert and Sonoran Desert along with other deserts are found here. Beyond
1358-508: Is a lack of agreement on the amount of carbon that can be stored in grassland ecosystem. This is partly caused by different methodologies applied to measure soil organic carbon and limited respective datasets. Further, carbon accumulation in soils changes significantly over time and point in time measurements produce an insufficient evidence base. Grasslands are among the most threatened ecosystems. Global losses from grassland degradation are estimated to be over $ 7 billion per year. According to
1455-489: Is in the Western states. Public lands account for 25 to 75 percent of the total land area in these states. The climate of the West is semi-arid , yet parts of the region get high amounts of rain or snow. Other parts are true desert which receive less than 5 inches (130 mm) of rain per year. The climate is increasingly unstable, and subject to periods of severe drought. The seasonal temperatures vary greatly throughout
1552-591: Is known that grasslands have existed in Europe throughout the Pleistocene (the last 1.8 million years). Following the Pleistocene ice ages (with their glacials and interglacials ), grasslands expanded in the hotter, drier climates, and began to become the dominant land feature worldwide. Since the grasslands have existed for over 1.8 million years, there is high variability. For example steppe-tundra dominated in Northern and Central Europe whereas
1649-627: Is often a plagioclimax ; it remains dominant in a particular area usually due to grazing , cutting, or natural or man-made fires, all discouraging colonization by and survival of tree and shrub seedlings . Some of the world's largest expanses of grassland are found in the African savanna, and these are maintained by wild herbivores as well as by nomadic pastoralists and their cattle , sheep or goats. Grasslands have an impact on climate change by slower decomposition rates of litter compared to forest environments. Grasslands may occur naturally or as
1746-689: Is predicted to experience drought-like conditions for much of the 21st century. Violent thunderstorms occur east of the Rockies . Tornadoes occur every spring on the southern plains, with the most common and most destructive centered on Tornado Alley , which covers eastern portions of the West, ( Texas to North Dakota ), and all states in between and to the east. Agriculture varies depending on rainfall, irrigation, soil, elevation, and temperature extremes. The arid regions generally support only livestock grazing, chiefly beef cattle. The wheat belt extends from Texas through The Dakotas , producing most of
1843-553: Is still controversial. A study in Brazilian Subtropical Highland Grasslands found that grasslands without traditional land management—which uses fire every two years and extensive cattle grazing—can disappear within 30 years. This study showed that grasslands inside protected areas , in which fire is not allowed and cattle grazing is banned, grasslands were quickly replaced by shrubs ( shrub encroachment ). Land cover has always changed during
1940-734: Is the largest region of the country, covering nearly half the land area of the contiguous United States . It is also the most geographically diverse, incorporating geographic regions such as the temperate rainforests of the Northwest , the highest mountain ranges, including the Rocky Mountains , the Sierra Nevada , and the Cascade Range , numerous glaciers , and the western edge of the Great Plains . It also contains
2037-577: The Cenozoic era. Salt flats and salt lakes reveal a time when the great inland seas covered much of what is now the West. The Pacific states are the most geologically active areas in the United States. Earthquakes cause damage every few to several years in California . While the Pacific states are the most volcanically active areas, extinct volcanoes and lava flows are found throughout most of
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#17327805028592134-505: The Earth . Furthermore, grasslands are one of the largest biomes on Earth and dominate the landscape worldwide. There are different types of grasslands: natural grasslands, semi-natural grasslands, and agricultural grasslands. They cover 31–69% of the Earth's land area. Included among the variety of definitions for grasslands are: Semi-natural grasslands are a very common subcategory of
2231-590: The East . During the latter half of the 20th century, several transcontinental interstate highways crossed the West bringing more trade and tourists from the East. Oil boom towns in Texas and Oklahoma rivaled the old mining camps for their rawness and wealth. The Dust Bowl forced children of the original homesteaders even further west. The movies became America's chief entertainment source featuring western fiction , later
2328-918: The Everglades of Florida , the Pantanal of Brazil , Bolivia and Paraguay or the Esteros del Ibera in Argentina , are classified with flooded savannas as the flooded grasslands and savannas biome and occur mostly in the tropics and subtropics. The species that live in these grasslands are well adapted to the hydrologic regimes and soil conditions. The Everglades—the world's largest rain-fed flooded grassland—is rich in 11,000 species of seed-bearing plants, 25 species of orchids , 300 bird species, and 150 fish species. Water-meadows are grasslands that are deliberately flooded for short periods. High-altitude grasslands located on high mountain ranges around
2425-693: The Grand Canyon . The Colorado River is a major source of water in the Southwest and many dams, such as the Hoover Dam , form reservoirs along it. So much water is drawn for drinking water throughout the West and irrigation in California that in most years, water from the Colorado River no longer reaches the Gulf of California . The Columbia River , the largest river in volume flowing into
2522-544: The Gulf of Mexico . The Mississippi River forms the easternmost possible boundary for the West today. The Missouri River , a tributary of the Mississippi , flows from its headwaters in the Rocky Mountains eastward across the Great Plains , a vast grassy plateau, before sloping gradually down to the forests and hence to the Mississippi . The Colorado River snakes through the Mountain states , at one point forming
2619-703: The Las Vegas Valley and Los Angeles . Plains make up much of the eastern portion of the West, underlain with sedimentary rock from the Upper Paleozoic , Mesozoic , and Cenozoic eras. The Rocky Mountains expose igneous and metamorphic rock both from the Precambrian and from the Phanerozoic eon. The Inter-mountain States and Pacific Northwest have huge expanses of volcanic rock from
2716-413: The Mississippi , Ohio , Missouri , Illinois , Tennessee , Cumberland , Arkansas , and White Rivers and their tributaries, and certain other rivers that flow towards the Gulf of Mexico ." The Ohio River portion of the system includes parts of several Atlantic coastal states, from Georgia to New York. Most of the public land held by the U.S. National Forest Service and Bureau of Land Management
2813-529: The Mormon Trail , made its fortunes on outfitting settlers; St. Louis built itself upon the vast fur trade in the West before its settlement. The 1850s were marked by political battles over the expansion of slavery into the western territories, issues leading to the Civil War . Between 1863 and 1869, North America's first transcontinental railroad was constructed to connect the eastern US with
2910-593: The Mountain States include Denver , Colorado Springs , Phoenix , Tucson , Albuquerque , Las Vegas , Reno , Salt Lake City , Boise , El Paso , and Billings . Along the Pacific Ocean coast lie the Coast Ranges , which, while not approaching the scale of the Rocky Mountains , are formidable nevertheless. They collect a large part of the airborne moisture moving in from the ocean. East of
3007-882: The Northern Mariana Islands ) are sometimes considered part of the Western United States. American Samoa is in Polynesia in the South Pacific Ocean , while Guam and the Northern Mariana Islands are in the Mariana Islands in the western North Pacific Ocean . Guam and the Northern Mariana Islands have district courts within the 9th Circuit , which includes western states such as California and Nevada. (See District Court of Guam and District Court for
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3104-634: The Oklahoma panhandle are typically considered to be the Southwest states. Meanwhile, the states of Montana, Idaho, Oregon, and Washington can be considered part of the Northwest or Pacific Northwest . The term West Coast is commonly used to refer to just California, Oregon, Washington, and Alaska, whereas Hawaii is more geographically isolated from the continental U.S. and does not necessarily fit in any of these subregions . The three inhabited Pacific U.S. territories ( American Samoa , Guam and
3201-648: The Pacific Ocean from North America , and its tributary, the Snake River , water the Pacific Northwest. The Platte runs through Nebraska and was known for being a mile (2 km) wide but only a half-inch (1 cm) deep. The Rio Grande forms the border between Texas and Mexico before turning due north and splitting New Mexico in half. According to the United States Coast Guard , "The Western Rivers System consists of
3298-536: The Pacific coast . The resulting railroad connection revolutionized the settlement and economy of the American West by making the transportation of passengers and freight quicker, safer, and cheaper. The history of the American West in the late 19th and early 20th centuries has acquired a cultural mythos in the literature and cinema of the United States. The image of the cowboy , the homesteader , and westward expansion took real events and transmuted them into
3395-554: The Virginia opossum , which occurs throughout California and coastal areas in Oregon and Washington. The North American beaver and mountain beaver live in forested areas of Washington, Oregon and Northern California. The kit fox lives throughout Arizona, New Mexico and Utah, while the gray fox occurs throughout the Western U.S. The Western United States has been populated by Native Americans since at least 11,000 years ago, when
3492-733: The Western States , the Far West , the Western territories , and the West ) is one of the four census regions defined by the United States Census Bureau . As American settlement in the U.S. expanded westward , the meaning of the term the West changed. Before around 1800, the crest of the Appalachian Mountains was seen as the western frontier . The frontier moved westward and eventually
3589-480: The encroachment of woody species . Species richness is particularly high in grasslands of low soil fertility such as serpentine barrens and calcareous grasslands, where woody encroachment is prevented as low nutrient levels in the soil may inhibit the growth of forest and shrub species. Another common predicament often experienced by the ill-fated grassland creatures is the constant burning of plants, fueled by oxygen and many expired photosynthesizing organisms, with
3686-871: The prairie and Pacific grasslands of North America , the Pampas of Argentina , Brazil and Uruguay , calcareous downland , and the steppes of Europe . They are classified with temperate savannas and shrublands as the temperate grasslands, savannas, and shrublands biome . Temperate grasslands are the home to many large herbivores , such as bison , gazelles , zebras , rhinoceroses , and wild horses . Carnivores like lions , wolves , cheetahs and leopards are also found in temperate grasslands. Other animals of this region include deer , prairie dogs , mice , jack rabbits , skunks , coyotes , snakes , foxes , owls , badgers , blackbirds, grasshoppers , meadowlarks , sparrows , quails , hawks and hyenas . Grasslands that are flooded seasonally or year-round, like
3783-509: The tropical and subtropical grasslands, savannas and shrublands biome . The rainfall level for that grassland type is between 90 and 150 centimeters per year. Grasses and scattered trees are common for that ecoregion, as well as large mammals , such as wildebeest ( Connochaetes taurinus ) and zebra ( Equus zebra ). Notable tropical and subtropical grasslands include the Llanos grasslands of South America . Mid-latitude grasslands, including
3880-697: The western United States during the Miocene and Pliocene epochs, a period of some 25 million years, created a continental climate favourable to the evolution of grasslands. Around 5 million years ago during the Late Miocene in the New World and the Pliocene in the Old World, the first true grasslands occurred. Existing forest biomes declined, and grasslands became much more widespread. It
3977-778: The African savannas or the Iberian deheza. As flowering plants and trees, grasses grow in great concentrations in climates where annual rainfall ranges between 500 and 900 mm (20 and 35 in). The root systems of perennial grasses and forbs form complex mats that hold the soil in place. Grasslands support the greatest aggregations of large animals on Earth, including jaguars, African wild dogs, pronghorn , black-footed ferret , plains bison , mountain plover , African elephant, Sunda tiger, black rhino, white rhino, savanna elephant, greater one-horned rhino, Indian elephant and swift fox . Grazing animals, herd animals, and predators in grasslands, like lions and cheetahs live in
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4074-510: The American West—and introduction of invasive species , like cane toads in northern Australia, have disrupted the balance in these ecosystems and damaged a number of other species. Grasslands are home to a number of the foremost magnificent animals on the planet—elephants, bison, lions—and hunters have found them to be enticing prey. But when hunting is not controlled or is conducted illegally, species can become extinct. Grasslands provide
4171-525: The Census definition out on the eastern edge of the Great Plains or on the Mississippi River . The survey respondents as a whole showed just how little agreement there was on the boundaries of the West. The region is split into two smaller units or divisions, by the U.S. Census Bureau: Other classifications distinguish between Southwest and Northwest . Arizona, New Mexico, West Texas , and
4268-559: The Coast Ranges lie several cultivated fertile valleys , notably the San Joaquin and Sacramento valleys of California and the Willamette Valley of Oregon . Beyond the valleys lie the Sierra Nevada in the south and the Cascade Range in the north. Mount Whitney , at 14,505 feet (4,421 m) the tallest peak in the contiguous 48 states, is in the Sierra Nevada . The Cascades are also volcanic. Mount Rainier ,
4365-539: The International Union for the Conservation of Nature (IUCN), the most significant threat to grasslands is human land use, especially agriculture and mining. The vulnerability of grasslands stems from a range of factors, such as misclassification, poor protection and cultivation. Grasslands have an extensive history of human activity and disturbance . To feed a growing human population, most of
4462-665: The Northern Ndebele , Batswana and VhaTsonga lived in the bantustan as well. Sekukuniland is named after Pedi chief Sekhukhune or Sekukuni, who succeeded Sekwati in 1860 or 1861, and it is the only native region in South Africa named after a famous local chief. Present day Sekhukhune District Municipality in Limpopo Province is named after this natural region. South African artist Johannes Segogela, renowned internationally for his wooden sculptures,
4559-628: The Northern Mariana Islands ). American Samoa, Guam, and the Northern Mariana Islands are also considered part of the western U.S. by the U.S. National Park Service , the Federal Reserve Bank system, FEMA , and the USGS . The population distribution by race in the Western United States (2022): As defined by the United States Census Bureau , the Western region of the United States includes 13 states, with
4656-516: The Pacific Coast where it increases again. In fact, the greatest annual rainfall in the United States falls in the coastal regions of the Pacific Northwest . Drought is much more common in the West than the rest of the United States. The driest place recorded in the U.S. is Death Valley , California. In Western states, drought is closely associated with fire risk, and there have been a number of notable wildfires causing extensive property damage and wildlife habitat destruction . The Western United States
4753-491: The Pedi and for other northern Sotho people groups by the Transvaal Republic's Native Location Commission. Between 1972 and 1994 part of Sekhukhuneland was included in the Lebowa bantustan . The territory was not contiguous, being divided into two major and several minor portions. Having been intended as a homeland for the Northern Sotho-speaking tribes such as the Pedi, Lebowa included swathes of Sekukuniland. However, various other non-Northern Sotho-speaking tribes, including
4850-402: The Rockies , 54 of which are over 14,000 feet (4,300 m), are found in central and western Colorado . East of the Rocky Mountains is the Great Plains, the western portions (for example, the eastern half of Colorado) of which are generally considered to be part of the western United States. The West has several long rivers that empty into the Pacific Ocean , while the eastern rivers run into
4947-429: The West and California , whites and blacks together are less than half the population because of the preference for the region by Hispanics and Asians . African and European Americans, however, continue to wield a stronger political influence because of the lower rates of citizenship and voting among Asians and Hispanics . According to 2022 estimates from the Census Bureau, the largest ancestries reported in
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#17327805028595044-440: The West and brought prosperity for several states, where agriculture had previously only been subsistence level. Following World War II , the West's cities experienced an economic and population boom. The population growth, mostly in the Southwest states of New Mexico , Utah , Colorado , Arizona , and Nevada , has strained water and power resources, with water diverted from agricultural uses to major population centers, such as
5141-517: The West are Mexican (24.2%), German (10.1%), English (9.5%), Irish (7.2%), Italian (3.5%), Filipino (3.4%), and Chinese (3.3%). The West also contains much of the Native American population in the U.S., particularly in the large reservations in the Mountain and Desert States . As of 2022, the West is home to 365,351 Navajo , 109,208 Apache , and 78,364 Blackfeet , as well as 276,082 people identifying as Indigenous Mexican . The largest concentrations for African-Americans in
5238-453: The West as a metaphor for the virtue of self-reliance and an American ethos. The contrast between the romanticism of culture about the West and the actuality of the history of the westward expansion has been a theme of late 20th and early 21st century scholarship about the West. Cowboy culture has become embedded in the American experience as a common cultural touchstone, and modern forms as diverse as country and western music have celebrated
5335-409: The West can be found in San Diego , Los Angeles , Oakland , Sacramento , Fresno , San Francisco , Seattle , Tacoma , Phoenix , Las Vegas , Denver , and Colorado Springs . The Western United States has a higher sex ratio (more males than females ) than any other region in the United States. Because the tide of development had not yet reached most of the West when conservation became
5432-662: The West. The ecoregions and ecology found in the Western United States are extremely varied. For instance, large areas of land are made up of everything from sand dunes in the Central Basin and Range ecoregion , which makes up much of the State of Nevada , to the ecology of the North Cascades in Washington state , which has the largest concentration of active alpine glaciers in the lower 48 . The densely forested areas found in Northern California , Oregon , Washington, Idaho , and Montana have mostly species adapted to living in temperate climates , while Southern California , Nevada , Arizona , southern Utah , and New Mexico have
5529-444: The West. Low elevations on the West Coast have warm summers and mild winters with little to no snow. The desert southwest has very hot summers and mild winters. While the mountains in the southwest receive generally large amounts of snow. The Inland Northwest has a continental climate of warm to hot summers and cold to bitterly cold winters. Annual rainfall is greater in the eastern portions, gradually tapering off until reaching
5626-572: The atmosphere). It can have severe negative consequences on key ecosystem services, like land productivity and groundwater recharge. Despite growing recognition of the importance of grasslands, understanding of restoration options remains limited. Cost of grassland restoration is highly variable and respective data is scarce. Successful grassland restoration has several dimensions, including recognition in policy, standardisation of indicators of degradation, scientific innovation, knowledge transfer and data sharing. Restoration methods and measures include
5723-478: The biomass carbon in this ecosystem. This underground biomass can extend several meters below the surface and store abundant carbon into the soil, resulting in deep, fertile soils with high organic matter content. For this reason, soil carbon accounts for about 81% of the total ecosystem carbon in grasslands. The close link between soil carbon and underground biomass leads to similar responses of these carbon pools to fluctuations in annual precipitation and temperature on
5820-450: The community of Hollywood in Los Angeles became the headquarters of the mass media such as radio and television production. California has emerged as the most populous state and one of the top 10 economies in the world. Massive late 19th–20th century population and settlement booms created two megalopolis areas of the Greater Los Angeles / Southern California and the San Francisco Bay Area / Northern California regions, one of
5917-478: The contiguous Western U.S. are mule deer , white-tailed antelope squirrels , cougars , American badgers , coyotes , hawks and several species of snakes and lizards are common. While the American black bear lives throughout the U.S., the brown bears and grizzly bears are more common in the northwest and in Alaska. Along the West Coast there are several species of whales, sea otters , California sea lions , eared seals and northern elephant seals . In
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#17327805028596014-459: The deserts lie the Rocky Mountains . In the north, they run almost immediately east of the Cascade Range , so that the desert region is only a few miles wide by the time one reaches the Canada–US border. The Rockies are hundreds of miles wide and run uninterrupted from New Mexico to Alaska . The Rocky Mountain Region is the highest overall area of the United States, with an average elevation of above 4,000 feet (1,200 m). The tallest peaks of
6111-417: The disturbance can play a key role in the soil organic carbon ( SOC ) balance of grasslands. Bedrock , irrigation practices, soil acidification , liming , and pasture management can all have potential impacts on grassland organic carbon stocks. Good grassland management can reverse historical soil carbon losses. The relationship of improved biodiversity with carbon storage is subject of research. There
6208-463: The dry, inland desert areas of states such as California, Nevada, Arizona and New Mexico there are some of the world's most venomous lizards, snakes and scorpions. The most notorious might be the Gila monster and Mohave rattlesnake , both found in deserts in the Southwest . The Sonoran Desert has eleven species of rattlesnakes - more than anywhere else in the world. Along the southwestern border there are jaguars and ocelots . Other mammals include
6305-501: The economics that the world's grasslands have to offer, from producing grazing animals, tourism, ecosystems services such as clean water and air, and energy extraction. Vast areas of grassland are affected by woody encroachment , which is the expansion of woody plants at the expense of the herbaceous layer. Woody encroachment is caused by a combination of human impact (e.g. fire exclusion, overstocking and resulting overgrazing ) and environmental factors (i.e. increased CO 2 levels in
6402-412: The first Paleo-Indians arrived. Pre-Columbian trade routes to kingdoms and empires such as the Mound Builders existed in places such as Yellowstone National Park since around 1000 AD. Major settlement of the western territories developed rapidly in the 1840s, largely through the Oregon Trail and the California Gold Rush of 1849. California experienced such a rapid growth in a few short months that it
6499-898: The following, the biodiversity of the plants evolve. Also, the species that already lived there adapted to the new conditions. Most of the grassland areas have been turned to arable fields and disappeared again. The grasslands permanently became arable cropping fields due to the steady decrease in organic matter. Nowadays, semi-natural grasslands are rather located in areas that are unsuitable for agricultural farming. Grasslands dominated by unsown wild-plant communities ("unimproved grasslands") can be called either natural or "semi-natural" habitat. Although their plant communities are natural, their maintenance depends upon anthropogenic activities such as grazing and cutting regimes. The semi-natural grasslands contain many species of wild plants, including grasses, sedges, rushes, and herbs; 25 plant-species per 100 square centimeters can be found. A European record that
6596-519: The following: For the period 2021–2030 the United Nations General Assembly has proclaimed the UN Decade on Restoration, involving a joint resolution by over 70 countries. It is led by the United Nations Environment Programme and the Food and Agriculture Organization . Grassland types by Schimper (1898, 1903): Grassland types by Ellenberg and Mueller-Dombois (1967): Formation-class V. Terrestrial herbaceous communities Grassland types by Laycock (1979): These grasslands can be classified as
6693-463: The forest to create areas for raising their livestock. Grasslands often occur in areas with annual precipitation is between 600 mm (24 in) and 1,500 mm (59 in) and average mean annual temperatures ranges from −5 and 20 °C. However, some grasslands occur in colder (−20 °C) and hotter (30 °C) climatic conditions. Grassland can exist in habitats that are frequently disturbed by grazing or fire, as such disturbance prevents
6790-549: The grassland type and on how strong it is affected by human impact. Dominant trees for the semi-natural grassland are Quercus robur , Betula pendula , Corylus avellana , Crataegus and many kinds of herbs. In chalk grassland , the plants can vary from very tall to very short. Quite tall grasses can be found in North American tallgrass prairie , South American grasslands, and African savanna . Woody plants, shrubs or trees may occur on some grasslands—forming savannas, scrubby grassland or semi-wooded grassland, such as
6887-518: The grasslands biome. These can be defined as: They can also be described as the following: There are many different types of semi-natural grasslands, e.g. hay meadows . The graminoids are among the most versatile life forms . They became widespread toward the end of the Cretaceous period, and coprolites of fossilized dinosaur feces have been found containing phytoliths of a variety of grasses that include grasses that are related to modern rice and bamboo . The appearance of mountains in
6984-443: The grasslands of the African savanna. Mites , insect larvae , nematodes , and earthworms inhabit deep soil, which can reach 6 metres (20 feet) underground in undisturbed grasslands on the richest soils of the world. These invertebrates, along with symbiotic fungi , extend the root systems, break apart hard soil, enrich it with urea and other natural fertilizers, trap minerals and water and promote growth. Some types of fungi make
7081-840: The lack of rain pushing this problem to further heights. When not limited by other factors, increasing CO 2 concentration in the air increases plant growth, similarly as water use efficiency, which is very important in drier regions. However, the advantages of elevated CO 2 are limited by factors including water availability and available nutrients , particularly nitrogen. Thus effects of elevated CO 2 on plant growth will vary with local climate patterns, species adaptations to water limitations, and nitrogen availability. Studies indicate that nutrient depletion may happen faster in drier regions, and with factors like plant community composition and grazing. Nitrogen deposition from air pollutants and increased mineralization from higher temperatures can increase plant productivity, but increases are often among
7178-448: The land is also important, as it is then easier to fertilize, for example. For instance, if it is located near a road. With the development of technology, it is becoming increasingly easy to cultivate land with a steeper gradient, to the detriment of grasslands. The management of grasslands is also changing permanently. There is increased use of mineral fertilizers, furthermore borders and field edges are removed to enlarge fields and leveling
7275-491: The land's managers, who are required to keep land use within environmentally acceptable limits. The largest city in the region is Los Angeles , located on the West Coast . Other West Coast cities include San Diego , San Bernardino , San Jose , San Francisco , Oakland , Bakersfield , Fresno , Sacramento , Seattle , Tacoma , Anchorage , and Portland – some of which are dozens of miles inland. Prominent cities in
7372-437: The land, 49.7%, was covered with forest and there was also more semi-natural grassland (18.8%) than arable land (15.8%). In 2015 this has changed drastically. The forest cover has increased (50.8%) and arable land has also increased (20.4%), but the semi-natural grassland cover has decreased. Although it still covers a large area of the earth (10.6%). A quarter of semi-natural grassland was lost through intensification, i.e. it
7469-680: The lands west of the Mississippi River were considered the West . The U.S. Census Bureau's definition of the 13 westernmost states includes the Rocky Mountains and the Great Basin to the Pacific Coast , and the mid-Pacific islands state, Hawaii. To the east of the Western United States is the Midwestern United States and the Southern United States , with Canada to the north and Mexico to
7566-545: The landscape change due to agriculture of the last century. The original wild-plant communities having been replaced by sown monocultures of cultivated varieties of grasses and clovers, such as perennial ryegrass and white clover . In many parts of the world, "unimproved" grasslands are one of the most threatened types of habitat, and a target for acquisition by wildlife conservation groups or for special grants to landowners who are encouraged to manage them appropriately. Grassland vegetation can vary considerably depending on
7663-455: The majority of the desert areas located in the United States. The Mojave and the Great Basin deserts lie entirely within the Western region, along with parts of the Sonoran and Chihuahuan deserts (the latter extends significantly into Texas, while both extend into Mexico ). Given this expansive and diverse geography it is no wonder that the region is difficult to define precisely. Sensing
7760-638: The national average of 77.98 inhabitants/sq mi (30.11 inhabitants/km ). As of 2022, just under half of the 78.7 million residents of the West live in California . The entire Western region has also been strongly influenced by European , Hispanic or Latino , Asian and Native Americans ; it contains the largest number of minorities in the U.S. While most of the studies of racial dynamics in America such as riots in Los Angeles have been written about European and African-Americans , in many cities in
7857-615: The original diversity of plants having been destroyed by cultivation and by the use of fertilizers. Almost 90% of the European semi-natural grasslands do not exist anymore due to political and economic reasons. This loss took place during the 20th century. The ones in Western and Central Europe have almost disappeared completely. There are a few left in Northern Europe. Unfortunately, a large amount of red-listed species are specialists of semi-natural grasslands and are affected by
7954-409: The parts that were suitable for cultivation. The semi-natural grasslands were formed from these areas. However, there's also evidence for the local persistence of natural grasslands in Europe, originally maintained by wild herbivores, throughout the pre-Neolithic Holocene. The removal of the plants by the grazing animals and later the mowing farmers led to co-existence of other plant species around. In
8051-445: The plants more resistant to insect and microbial attacks. Grassland in all its form supports a vast variety of mammals, reptiles, birds, and insects. Typical large mammals include the blue wildebeest , American bison , giant anteater , and Przewalski's horse . The plants and animals that live in grasslands are connected through an unlimited web of interactions. But the removal of key species—such as buffalo and prairie dogs within
8148-824: The risk of misreading and misclassifying of landscapes. A map created by the World Resources Institute in collaboration with the IUCN identifies 2 billion hectares for potential forest restoration . It is criticised for including 900 million hectares of grasslands. It is expected that non-native grasses will continue to outperform native species under warmer and drier conditions that occur in many grasslands due to climate change. The type of land management used in grasslands can also lead to grassland loss/degradation. Many grasslands and other open ecosystems depend on disturbances such as wildfires , controlled burns and/or grazing to persist, although this subject
8245-503: The sense of isolation and independence of spirit inspired by the frontiersmen on "virgin land". The advent of the automobile enabled the average American to tour the West. Western businessmen promoted Route 66 as a means to bring tourism and industry to the West. In the 1950s, representatives from all the western states built the Cowboy Hall of Fame and Western Heritage Center to showcase western culture and greet travelers from
8342-672: The south. The West contains several major biomes , including arid and semi-arid plateaus and plains , particularly in the American Southwest ; forested mountains , including three major ranges, the Sierra Nevada , the Cascades , and Rocky Mountains; the long coastal shoreline of the American Pacific Coast ; and the rainforests of the Pacific Northwest . The Western United States
8439-688: The southeast and the Leolo Mountains in the north. At the height of the Pedi power under Thulare, about 1790–1820, historical Sekhukhuneland included an area stretching from the site of present-day Rustenburg in the west to the Lowveld in the east, and ranging as far south as the Vaal river . The area under Pedi control was severely limited after the military campaigns by British troops in 1879. Following their defeat native reserves were created for
8536-413: The terrain to facilitate the use of agricultural machinery. The professional study of dry grasslands falls under the category of rangeland management , which focuses on ecosystem services associated with the grass-dominated arid and semi-arid rangelands of the world. Rangelands account for an estimated 70% of the earth's landmass; thus, many cultures including those of the United States are indebted to
8633-590: The wheat and soybeans in the U.S. and exporting more to the rest of the world. Irrigation in the Southwest allows the growth of great quantities of fruits, nuts, and vegetables as well as grain, hay, and flowers. Texas is a major cattle and sheep raising area, as well as the nation's largest producer of cotton. Washington is famous for its apples, and Idaho for its potatoes. California and Arizona are major producers of citrus crops, however, declining supplies of water, as well as urban sprawl have contributed to
8730-593: The wild-plant diversity of the "unimproved" grasslands is usually a rich invertebrate fauna; there are also many species of birds that are grassland "specialists", such as the snipe and the little bustard . Owing to semi-natural grasslands being referred to as one of the most-species rich ecosystems in the world and essential habitat for many specialists, also including pollinators, there are many approaches to conservation activities lately. Agriculturally improved grasslands, which dominate modern intensive agricultural landscapes, are usually poor in wild plant species due to
8827-467: The world's grasslands are converted from natural landscapes to fields of corn, wheat or other crops. Grasslands that have remained largely intact thus far, such as the East African savannas , are in danger of being lost to agriculture. Grasslands are very sensitive to disturbances, such as people hunting and killing key species, or plowing the land to make more space for farms. Grassland vegetation
8924-581: The world, like the Páramo of the Andes Mountains . They are part of the montane grasslands and shrublands biome and can be tropical, subtropical, and temperate. The plants and animals, that can be found in the tropical montane, are able to adapt to cool, wet conditions as well as intense sunlight. Western United States The Western United States (also called the American West ,
9021-483: The years. The following relates to the changes between 1960 and 2015. There has been a decrease in semi-natural grasslands and an increase in areas with arable land , forest and land used for infrastructure and buildings. The line style and relative thickness of the lines indicates the percentage of the total area that changed. Changes less than 1% and land-cover classes with all changes less than 1% (i.e. semi-natural wetlands and water) are not included. In 1960 most of
9118-726: Was admitted to statehood in 1850 without the normal transitory phase of becoming an official territory. One of the largest migrations in American history occurred in the 1840s as the Latter Day Saints left the Midwest to build a theocracy in Utah . Both Omaha, Nebraska and St. Louis, Missouri laid claim to the title, "Gateway to the West" during this period. Omaha , home to the Union Pacific Railroad and
9215-557: Was born in Sekukuniland in 1936. 24°26′S 29°57′E / 24.433°S 29.950°E / -24.433; 29.950 Grassland A grassland is an area where the vegetation is dominated by grasses ( Poaceae ). However, sedge ( Cyperaceae ) and rush ( Juncaceae ) can also be found along with variable proportions of legumes , like clover , and other herbs . Grasslands occur naturally on all continents except Antarctica and are found in most ecoregions of
9312-412: Was converted into arable or pasture land and forests. It is more likely that intensification will occur in flat semi-natural grasslands, especially if the soil is fertile. On the other hand, grasslands, where the land is drought-prone or less productive, are more likely to persist as semi-natural grasslands than grasslands with fertile soil and low gradient of the terrain. Furthermore, the accessibility of
9409-627: Was found on a meadow in Estonia described 76 species of plants in one square meter. Chalk downlands in England can support over 40 species per square meter. In many parts of the world, few examples have escaped agricultural improvement (fertilizing, weed killing, plowing, or re-seeding). For example, original North American prairie grasslands or lowland wildflower meadows in the UK are now rare and their associated wild flora equally threatened. Associated with
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