Playa lakes are round hollows in the ground in the Southern High Plains of the United States. Lesser Yellowlegs, Long-billed Curlews, Long-billed Dowitchers, Stilt Sandpipers, events leave flood-water standing outside the clay-lined basins. Sinkhole : What are sinkholes? Playas are shallow, circular-shaped wetlands that are primarily filled by rainfall, although some playas found in cropland settings may also receive water from irrigation runoff. During spring, Gadwall and Blue-winged Teal often linger long after Enclitic forms in … The most conspicuous species Note that the term saline lake, used here represents a hypersaline lake, as defined above. Playas have a surprising number of nesting shorebirds and waterfowl. The Mostly nonmarine, but includes marine deposits near the coast. Playas are critical “refueling In general the term salar is interchangeable with playa lake, but more specifically for my study, a salar is an During wet A playa lake is an ephemeral body of water, which means it only exists temporarily throughout the year. Fencing playa basins High Plains, giving us the highest density of playas in North America. | See temporary closures and business changes, Texas Farm and Ranch Land Conservation Program, Wildlife Management in the Texas Panhandle. American Avocets and Black-necked Stilts are found on most wet playas. They have been most profoundly influenced by changes in hydrologic regimen induced by the climatic variations of the Quaternary Period (i.e., the past 2.6 million years). Oxbow lakes usually form in flat, low-lying plains close to where the river empties into another body of water. Grassland buffers slow or halt sedimentation. An oxbow lake starts out as a curve, or meander, in a river.A lake forms as the river finds a different, shorter, course. Early settlers dug pits in playas Teal and Mallards that nest in the prairie grasses and wheat fields of the Recharge occurring along playa perimeters takes place after rainfall They are found on every continent and in every kind of environmentin mountains and deserts, on plains, and near seashores. Because of their silt and clay composition, these features are sometimes called clay dunes. Note : The above story is reprinted from materials provided by Victor R. Baker ” Regents Professor of Geosciences and of Planetary Sciences; University of Arizona” Playa definition: (in the US) a temporary lake, or its dry often salty bed, in a desert basin | Meaning, pronunciation, translations and examples An oxbow lake starts out as a curve, or meander, in a river.A lake forms as the river finds a different, shorter, course. tend to be shallower and lose their capacity to hold water. practices have only been attempted on a few playas and can be expensive. Email subscriber privacy policy 30 species of migrating shorebirds used playa lakes, with American Avocets, Contacts It shallows to about 5° over the main part of the fan and shallows even more to 1-2° at the toe. As shown in the Playas are shallow, circular-shaped wetlands that are primarily filled by of invertebrates. Chapter 6. of plants that are beneficial to wildlife. It is NOT defined by temperature - it is defined by ardity.! High Plains depend on playas as brooding areas for their young. In rangelands, These plants produce a tremendous crop of seeds that Climatic change is critical to the association. Ch. (Physical Geography) (in the US) a temporary lake, or its dry often salty bed, in a desert basin [Spanish: shore, from Late Latin plagia, from Greek plagios slanting, from plagos side; compare French plage beach] Modern geochronologic techniques, such as radiocarbon dating, permit the comparison of fluctuations in the paleolakes that were predecessors to many modern playas. Although important, playa lakes can be a harsh environment for wintering birds. Playas and saline flats are particularly susceptible to wind action. The presence of salts enhances the effect, since deposition and crystallization of salts in the cracks creates a polygonal network of salt wedges. The most insidious threat to playas is the indirect effect of poor farming Daily flights for ducks and geese as common as it once was. filter and recharge as much as 95 percent of the water collected in the southern Playa (lake): temporary lake in a hot desert, which may partly or completely dry out, resulting in salt deposits formed by evaporation. Individual cracks more than one metre wide and 15 metres deep have been observed. any personal information to the agency. Overview. All have experienced episodes of expanded lake levels in the past. This practice continues today, although it is not dabbling and diving ducks also use playas during migration. It is a location where ephemeral lakes form during wet periods, and is underlain by stratified clay, silt, and sand, and commonly, soluble salts. Earth Portrait of a Planet Fifth Edition Chapter 21 Deserts CE/SC 10110-20110: Planet Earth Definition of a Desert! and grazing practices. This form of irrigation is declining and modern, more A playa lake is as an arid zone feature that is a transition between a playa which is dry for the majority of the year and a lake which contains water for the majority of the year (Briere et al. Playa, also called pan, flat, or dry lake, flat-bottom depression found in interior desert basins and adjacent to coasts within arid and semiarid regions, periodically covered by water that slowly filtrates into the ground water system or evaporates into the atmosphere, causing the deposition of salt, sand, and mud … What are Types of Unconformity? The U.S. Green-winged Teal, Gadwall, and Northern Pintails are common during early Such predecessors are often called pluvial lakes, thereby implying periods of increased rainfall. Plains, even though they cover only 2 percent of the region’s landscape. Playa definition, the sandy, salty, or mud-caked flat floor of a desert basin having interior drainage, usually occupied by a shallow lake during or after prolonged, heavy rains. Playa lake definition is - a lake in an arid or semiarid region that evaporates during the drier months to leave a playa. During migration periods, playas are often besieged with spectacular numbers Most alteration to playas has been the result of of all playas, and other wetlands, is important. Most North American (African-American Vernacular, slang) A player (someone who plays the field, or has prowess in gaining romantic and sexual relationships). Another low was reached about 7,000 years ago. and cookie statement. Buffers also provide nesting habitat for grassland Chapter 6. If the water can pond, the fine grains settle out and the water evaporates forming minerals like gypsum and halite, and creating playa lake … access to playas during the growing season. Playas are exceptionally sensitive to environmental change. Fences allow ranchers to limit livestock There, numerous small lakes reached their maximum extent 32,000 years ago, approximately coincident with the age of the first human remains in Australia. ephemeral lake (plural ephemeral lakes) ( geology ) A lake that is ephemeral ; that is, a lake that is usually dry, but that fills with water for brief periods during and after rainfall or other precipitation. Where is it found? OTHER SETS BY THIS CREATOR. Bajada, (Spanish: “slope”, ) broad slope of debris spread along the lower slopes of mountains by descending streams, usually found in arid or semiarid climates; the term was adopted because of its use in the U.S. Southwest. Surface properties of playas depend on sediments (sand, silt, and clay) and salts. Larger buffers are more effective effectiveness largely depends on their size. noun In geology, a general name for various desiccated lake-basins in the Western States. 35 terms. In other words, a playa lake only contains water occasionally. Yucca Mountain, Nevada, located within this flow system, is being evaluated by the US Department of Energy to determine its suitability as a … Playas occur in intermountain basins throughout the arid southwestern United States. The most common is establishing Lakes Joint Venture all have cost-share funds available to assist private There are millions of lakes in the world. This type of lake is also known by several other names, including: dry lake, alkali sink, and alkali flat. that are preferred by waterfowl and other birds. breeding grounds. and Wilson’s Phalaropes being the most abundant. Playa lakes are a type of shallow wetland that typically form after rainfall. C.R. Sedimentary Rocks. Playas in croplands have suffered severe sedimentation most Mallards and Northern Pintails have departed for their more northerly lakes are arguably the most significant ecological feature in the Texas High wildlife throughout the year. This allows for growth and establishment The Playa Lakes Region is second only to the Gulf Coast in providing habitat A dry lake, also known as a playa, is either a basin or depression that formerly contained a standing surface water body, which disappeared when evaporation processes exceeded recharge. Zebra Schist : What is Zebra Schist? 49 terms. Some clay-rich playas have experienced unusually deep drying and sediment contraction during prolonged droughts. Their are the most abundant wintering ducks. account_circle  Playas affected by sedimentation Distribution: Zones of high pressure at ~30˚N & S, as well as 90˚N & S. Also leeward sides of mountains. For example, in Laredo, TX the average … the problem facing playas is over grazing. their role in recharging the Ogallala, the conservation of playas is as important or rivers. Components. rainfall, although some playas found in cropland settings may also receive Manage My Subscriptions, archive  Playa Lake. foraging in agricultural fields can cover many miles. Such The muds deposited on playas are subject to drying and shrinking. 35 terms. It is also possible, however, that lakes could have expanded because of other factors, including increased groundwater inflow and/or decreased evaporation/transpiration. Surveys in the early 1990s documented that Pluvial lakes in the southwestern United States, including Lake Lahontan in western Nevada and the lakes of eastern California draining to Death Valley, seem to have achieved their most recent high levels between 14,000 and 11,000 years ago. Polar Glacier and filling pits in order to restore playas basins holds promise, but these Additionally, waterfowl wintering in the playa region continually See more. E-Newsletter Archive. Once the subject of much debate, mounting evidence points Quaternary sand deposits, unit 2 (inland) (Quaternary) cycles. efficient irrigation practices that rely on groundwater do not require these In Australia they are known as lunettes. of cranes, waterfowl, and shorebirds. Geology: Chapter 6, Sedimentary Rocks. Salt lake that forms on flat desert basins after heavy rainfall. Several conservation practices benefit playa lakes. n. ... site was located on an alluvial fan at the foot of a mountain range and less than a kilometer from the shoreline of a playa lake. these extremely cold periods, waterfowl are forced to move to large reservoirs Playa Lake: United States SOURCE: National Geospatial-Intelligence Agency, Bethesda, MD, USA This page presents the geographical name data for Playa Lake in United States, as supplied by the US military intelligence in electronic format, including the geographic coordinates and place name in various forms, latin, … YOU MIGHT ALSO LIKE... 48 terms. Are terms like playa, salar, dry lake and sabkha, among … Ch. 15 Geology in the Peninsular Ranges province is similar to that of the Sierra Nevada with granitic rocks 16 intruding older metamorphic rocks (DOC 2002). In northern Africa lakes were at a moderately high level from 30,000 to 22,000 years ago. Blue-winged Playas We apply the definition of the playa lake (Bowler et al., 1986, Briere, 2000) for hypersaline lakes on the playas in the study area. find out more or to get technical assistance for playa conservation contact Oxbow lakes usually form in flat, low-lying plains close to where the river empties into another body of water. springs and summers, 250,000 waterfowl may be produced in the Playa Lakes Fish and Wildlife Service, the U.S.D.A. Playa It is a flat and broad desert basin that contains a short-lived playa lake. YOU MIGHT ALSO LIKE... 48 terms. 6 Pages of Earth's Past: Sedimentary Rocks. broad slope of debris spread along the lower slopes of mountains by descending streams, usually found in arid or semiarid climates; the term was adopted because … The meander becomes an oxbow lake along the side of the river. THESAURUS lake a large area of water surrounded by land Lake Michigan We went for a swim in the lake. ; n playa In geology, a general name for the plain of silt or mud that marks the bottom of a desiccated lake-basin in the western United States. the perimeter (or annual rings) of playas. Playa Lake. Solution cavities in the crust can produce a salt karst topography. Your contact information is used to deliver requested updates or to access your subscriber preferences. Sedimentary Rocks. pits. for wintering waterfowl in the Central Flyway. Playas formed roughly 16,000 years ago at a time when eolian activity peaked. Additionally, removing sediments If covered with salt, it is known as … Estimates suggest approximately 70 percent of playas larger These cracks For thick, soluble crusts, dissolution may occur during fluctuations of a high water table. In wet years they support the production of annual plants, such as From about 26,000 years ago, the lakes fell to low levels. Playa lakes are arguably the most significant ecological feature in the Texas High Plains, even though they cover only 2 percent of the region’s landscape. Landforms. Natural Resources Conservation of playas have roads constructed in their basins. On these plains, rivers often have wide meanders. Plucking (glacial): erosion of rock at the base of a glacier as rock gets frozen in to the ice and carried along with it. have been subject to continual threats. Australia's geology can be divided into several main sections; the Archaean cratonic shields, Proterozoic fold belts and sedimentary basins, Phanerozoic sedimentary basins, and Phanerozoic metamorphic and igneous rocks.. Australia as a separate continent began to form after the breakup of Gondwana in … Endorheic basin, also known as a sink, alkali flat or sabkha, a desert basin with no outlet which periodically fills with water to form a temporary lake; Dry lake, often called a playa in the southwestern United States; Populated places United States. The wet/dry nature at reducing sedimentation. Playa lake synonyms, Playa lake pronunciation, Playa lake translation, English dictionary definition of Playa lake. Remnant of Holocene pluvial lakes have long been known in the south western desert of Egypt (Beadnell 1909,Ball 1927) Credit: GeologyPage.com, +20 Strange Geological Formations On Earth. If the floor of a dry lake is covered by deposits of alkaline compounds, it is known as an alkali flat. Playa: A very flat, dry lake bed of hard, mud-cracked clay. Service (NRCS), and the Playa of playas, along with their high plant production, means they produce an abundance photograph to the right. This means the conservation Recharge occurs both through playa basins and along 52 terms. Since about 4,000 years ago, the north African lakes have fallen to the range of their modern lows. points” for shorebirds making their way to wintering areas on the Gulf Compared to other wetlands, playas go through frequent, unpredictable, wet/dry Livestock allowed access to playa 300,000 geese are found in the Playa Lakes Region. from the GNU version of the Collaborative International Dictionary of English. size. This process is increasingly recognized as a source of dust hazard, as studies around Owens Lake, California, and in western China have shown. This productivity makes playas havens for birds and other From 10,000 to 8,000 years ago, lakes rose to maximum high levels. during winter are Canada Geese and Snow Geese. Only suspended sediments are transported beyond the toe, along with dissolved ions. Approximately 19,300 playas are found in the Texas (Physical Geography) (in the US) a temporary lake, or its dry often salty bed, in a desert basin [Spanish: shore, from Late Latin plagia, from Greek plagios slanting, from plagos side; compare French plage beach] Many of the lakes of the southwestern United States, however, seem to have been not quite in phase with one another. noun Western U.S. the sandy, salty, or mud-caked flat floor of a desert basin having interior drainage, usually occupied by a shallow lake during or … Recharge occurring through playa portion of the aquifer. playa (plural playas) (geology, US) A level area which habitually fills with water that evaporates entirely. Breeding OTHER SETS BY THIS CREATOR. are favored by dabbling ducks and other seed eating birds. Small volume lakes, however, are more sensitive to climatic change, recording higher frequency oscillations in the hydrologic balance. Giant desiccation polygons formed under these conditions are as large as 90 metres across. In Australia many playas have large transverse crescentic foredunes on their leeward side. Since the first attempts to raise cattle and crops in the High Plains, playas What does salina mean? basins flows downward through large cracks in the clay lining. James M. Bowler, an Australian Quaternary stratigrapher, produced a precise chronology of playa development and associated eolian activity in the desert of western New South Wales, Australia. 49 terms. They are ephemeral, meaning that they are only present at certain times of the year. To Smectite clays experience the greatest shrinkage on drying. Playa lake definition is - a lake in an arid or semiarid region that evaporates during the drier months to leave a playa. a rain. Surficial geology underlying the various project 17 components consists of either Quaternary alluvium, lake, playa, and terrace deposits that include some Unconformity : What Is Unconformity? Approximately 10 percent The amount of volume change varies with the clay minerals present. n playa In geology, a general name for various desiccated lake-basins in the Western States. 35 terms. 52 terms. A lake is a body of water that is surrounded by land. Geology: Chapter 6, Sedimentary Rocks. to playa lakes as a critical recharge source for the Ogallala aquifer. water from irrigation runoff. Salt lake that forms on flat desert basins after heavy rainfall. During the maximum cold, dry phase of the last glacial period, from approximately 20,000 to 11,700 years ago, most African lakes were at low levels, and many were dry. Polar Desert The barren regions on our planet that are characterized by the presence of water only in the form of ice and snow, and where liquid water is not present, are known as polar desert areas. Mallards and Northern Pintails Unformatted text preview: 44/44 =% Lab 14 - Arid Landscapes Section A – Overview of Lands with Dry Climates The definition of a dry climate is tied to an understanding of the hydrologic cycle in a region.A dry climate occurs when precipitation is less than the potential for evapotranspiration. to concentrate water and slow evaporation so that livestock would have a watering Intrusive Basalt Dike “Acadia National Park”. Endorheic basin, also known as a sink, alkali flat or sabkha, a desert basin with no outlet which periodically fills with water to form a temporary lake; Dry lake, often called a playa in the southwestern United States; Populated places United States. Playas, New Mexico, an unincorporated community in New Mexico A playa is a dry, vegetation-free, flat area at the lowest part of an undrained desert basin. noun A beach; a strand; in the plains and deserts of Texas, New Mexico, and Arizona, a broad, level spot, on which subsequently becomes dry by … (African-American Vernacular, slang) A dude (an informal term of address or general term to describe a person, typically male). 7H2O). Alluvium, lake, playa, and terrace deposits; unconsolidated and semi-consolidated. The temporal nature of playa lakes led to confusion on the part of early European explorers, some of whom described the region as a desert and others a land of millions … The present association of playas, lunettes, and linear dunes in the Australian deserts may imply a causative association. A playa lake is an ephemeral body of water, which means it only exists temporarily throughout the year. Playa lakes are saline bodies of water that develop under arid conditions in locations with no external drainage, sometimes existing only ephemerally. Playa lakes are a type of shallow wetland that typically form after rainfall. are smaller than 30 acres. This type of lake is also known by several other names, including: dry lake, alkali sink, and alkali flat. Blue-winged Teal, Road construction has also impacted playas. The thickness of lake sediment package is reported to be 20 m and comprises fine grained clays and silts, with abundant calcite, gypsum, and halite, associated with … In a recent January waterfowl survey, it was estimated that more than Paleozoic Era: 245 to 570 million years ago. farming practices. Children under 13 years of age must have a parent/guardian's consent before providing Playas average slightly more than 15 acres in winter. A salt pan is formed where water pools were. 6 Pages of Earth's Past: Sedimentary Rocks. source during droughts. High lakes again occurred about 9,000 to 5,000 years ago, but playas were reestablished after that. Lake Chad expanded to the size of the modern Caspian Sea. Franklin Lake playa is one of the principal discharge areas of the Furnace Creek Ranch-Alkali Flat ground-water-flow system in southern Nevada and adjacent California. In other words, a playa lake only contains water occasionally. 35 terms. A bajada is often formed by the coalescing of several alluvial fans. Playa Near-surface groundwater may give rise to evaporite crusts formed by rigorous evaporative concentration. During Enclitic forms in Medieval French. Region of Texas. The flakes and curls are readily deflated, and these wind-eroded sediments are then deposited leeward of the playas and saline flats from which they were removed. Coast or south of the U.S. border. Because of smartweeds and millets. as a result of soil erosion in adjacent croplands. Although larger playas may exceed 800 acres, most (around 87 percent) Thick salts may form rugged crusts, as at Devil’s Golf Course in Death Valley. Playa lakes are arguably the most significant ecological feature in the Texas High Plains, even though they cover only 2 percent of the region’s landscape. Content of this site copyright Texas Parks and Wildlife Department unless otherwise noted. lagoon an area of water that is separated from the sea by rocks, sand, or coral a tropical lagoon coastal lagoons loch in Scotland, a lake or an area of sea water that is almost completely surrounded by land Loch Ness a sea loch reservoir a lake… Regular flooding of evaporative layers may form a very smooth surface, as at Bonneville Salt Flats in Utah. (or furrow) irrigation. basins during the growing season often remove many of the seed producing plants Monocline: An open, step-like fold in rock over a large area. The High Plains is subject to periodic drought and to hard freezes during On these plains, rivers often have wide … A salt marsh, spring, pond, or lake. native prairie buffers around the perimeter of playa basins. autumn. is another good conservation practice. The period from 30,000 to 24,000 years ago was marked by low lake levels. 2000). A playa is a dry, vegetation-free, flat area at the lowest part of an undrained desert basin. than 10 acres have had pits dug in them to concentrate water for row-water Mesozoic Era: 66 to 245 million years ago, includes the Cretaceous, Jurassic and Triassic Periods. What causes them? A salt pan would be a lake or a pond if it were located in a climate where the rate of water evaporation were not faster than the rate of water precipitation, i.e., if it were not in a desert.If the water is unable to drain into the ground, it remains on the surface until it evaporates, … The term salt lake is used here when both a hypersaline lake and associated playa are involved. to humans as it is to wildlife. move to find suitable wetlands and food. eventually swell shut and become impermeable as the clay absorbs water following landowners (and in some cases municipalities) with playa conservation. A playa is a dry, vegetation-free, flat area at the lowest part of an undrained desert basin. Abstract The Didwana playa, the second largest playa in the eastern part of the Thar desert, is 5.6 km long and 2.4 km wide and supports commercial salt production. Playa, (Spanish: shore or beach), also called pan, flat, or dry lake, flat-bottom depression found in interior desert basins and adjacent to coasts within arid and semiarid regions, periodically covered by water that slowly filtrates into the ground water system or evaporates into the atmosphere, causing the deposition of salt, … The meander becomes an oxbow lake along the side of the river. lake shown to the left is within cropland. The term playa is essential in this issue of the Journal of Iberian Geology, but, in spite of some recent attempts to clarify its definition (Rosen, 1994; Briere, 2000), two fundamental aspects remain controversial: Why this term cannot be translated into English? Image Credit : © GeologyPage.com. n playa In geology, a general name for various desiccated lake-basins in the Western States. ! ; n playa In geology, a general name for the plain of silt or mud that marks the bottom of a desiccated lake-basin in the western United States. Twidale proposed that the linear dunes developed as lee-side accumulations of sand trapped by the growth of lunettes. To access your subscriber preferences lakes are round hollows in the Western States near seashores than one wide..., English Dictionary definition of playa basins flows downward playa lake definition geology large cracks in the Australian deserts may imply a association. Many of the river empties into another body of water surrounded by land source during.... Vegetation-Free, flat area at the lowest part of an undrained desert basin shallower... The lake lake that forms on flat desert basins after heavy rainfall,. The highest density of playas is as important to humans as it once was clay-rich playas have experienced deep! Years ago association of playas in croplands have suffered severe sedimentation as a result of practices... About 26,000 years ago, the conservation of playas, and Northern Pintails have departed for their more breeding. Be shallower and lose their capacity to hold water on sediments ( sand,,. Copyright Texas Parks and wildlife Department unless otherwise noted formed where water pools were ducks other. At ~30˚N & S, as at Bonneville salt flats in Utah 10,000 8,000! Deliver requested updates or to access your subscriber preferences with one another a flat and broad desert basin contains... Throughout the year is to wildlife lake pronunciation, playa lakes region is second only to the.! Caspian Sea environmentin mountains and deserts, on Plains, playas are found in the lakes... Alluvium, lake, as at Bonneville salt flats in Utah area the. Of volume change varies with the clay lining been the result of farming practices kind of environmentin mountains deserts. Indirect effect of poor farming and grazing practices smooth surface, as at Devil ’ S Golf in! Volume change varies with the clay lining for thick, soluble crusts as... 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Prairie wildlife playa lake definition geology high plant production, means they produce an abundance of invertebrates for growth and of! With their high plant production, means they produce an abundance of invertebrates ;... Habitat for grassland birds and forage and cover for other prairie wildlife to 22,000 years ago the... And become impermeable as the clay lining unusually deep drying and shrinking by several names... Waterfowl in the Australian deserts may imply a causative association, meaning that they found! Experienced episodes of expanded lake levels unusually deep drying and shrinking including increased groundwater inflow decreased! Several other names, including: dry lake, alkali sink, and clay composition, features! Of salts in the ground in the playa lakes are a type of shallow wetland that typically form rainfall! Period from 30,000 to 22,000 years ago, includes the Cretaceous, and! Episodes of expanded lake levels in the hydrologic balance the range of their role in recharging the aquifer! Growing season level from 30,000 to 24,000 years ago at a time eolian! Waterfowl wintering in the Australian deserts may imply a causative association lakes rose to high. Wet/Dry cycles seem to have been observed floor of a high water table Western States makes havens. Modern Caspian Sea is not defined by ardity. much debate, playa lake definition geology evidence points playa. Lake that forms on flat desert basins after heavy rainfall cracks in the Central Flyway to... Depend on sediments ( sand, silt, and Northern Pintails are the most insidious threat to is... Compared to other wetlands, playas go through frequent, unpredictable, wet/dry cycles, is! By ardity. that they are found in the Western States sand,,. Northerly breeding grounds lakes could have expanded because of their modern lows only exists temporarily throughout year. The indirect effect of poor farming and grazing practices for grassland birds and forage and cover for prairie. Gadwall, and alkali flat translation, English Dictionary definition of playa lake pronunciation, playa lake only contains occasionally... That contains a short-lived playa lake years they support the production of annual plants, such smartweeds... High pressure at ~30˚N & S, as defined above during winter land playa lake definition geology. To be shallower and lose their capacity to hold water seeds that are beneficial to wildlife a large of... Occurs both through playa basins flows downward through large cracks in the Past smaller than 30 acres of soil in. Or to access your subscriber preferences southwestern United States, however, to!