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Harney Basin
The Harney Basin is an endorheic basin in southeastern Oregon in the United States at the northwestern corner of the Great Basin. One of the least populated areas of the contiguous United States, it is located largely in northern Harney County, bounded on the north and east by the Columbia Plateau—within which it is contained, physiographically speaking—and on the south and west by a volcanic plain. The basin encompasses an area of in the watershed of Malheur Lake and Harney Lake. Malheur Lake is a freshwater lake, while Harney Lake is saline-alkaline. The basin is bounded on the north by the southern end of the Blue Mountains. The ridge of Steens Mountain separates the basin from the watershed of the Alvord Desert to the southeast. No streams cross the volcanic plains that separate the basin from the watershed of the Klamath River to the southwest. The basin includes archeological sites of the Drewsey Resource Area. Geography The central basin receives an average of o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Physiographic Region
The physiographic regions of the contiguous United States The contiguous United States (officially the conterminous United States) consists of the 48 adjoining U.S. states and the Federal District of the United States of America. The term excludes the only two non-contiguous states, Alaska and Hawaii ... comprise 8 regions, 25 provinces, and 85 sections. The system dates to Nevin Fenneman's paper ''Physiographic Subdivision of the United States'', published in 1917. Fenneman expanded and presented his system more fully in two books, ''Physiography of western United States'' (1931), and ''Physiography of eastern United States'' (1938). In these works Fenneman described 25 provinces and 85 sections of the United States physiography. Physiographic divisions References {{DEFAULTSORT:United States Physiographic Region ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Klamath River
The Klamath River (Karuk: ''Ishkêesh'', Klamath: ''Koke'', Yurok: ''Hehlkeek 'We-Roy'') flows through Oregon and northern California in the United States, emptying into the Pacific Ocean. By average discharge, the Klamath is the second largest river in California after the Sacramento River. It drains an extensive watershed of almost that stretches from the arid country of south-central Oregon to the temperate rainforest of the Pacific coast. Unlike most rivers, the Klamath begins in the high desert and flows toward the mountains – carving its way through the rugged Cascade Range and Klamath Mountains before reaching the sea. The upper basin, today used for farming and ranching, once contained vast freshwater marshes that provided habitat for abundant wildlife, including millions of migratory birds. Most of the lower basin remains wild, with much of it designated wilderness. The watershed is known for this peculiar geography, and the Klamath has been called "a river upsid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Environmental Protection Agency
A biophysical environment is a biotic and abiotic surrounding of an organism or population, and consequently includes the factors that have an influence in their survival, development, and evolution. A biophysical environment can vary in scale from microscopic to global in extent. It can also be subdivided according to its attributes. Examples include the marine environment, the atmospheric environment and the terrestrial environment. The number of biophysical environments is countless, given that each living organism has its own environment. The term ''environment'' can refer to a singular global environment in relation to humanity, or a local biophysical environment, e.g. the UK's Environment Agency. Life-environment interaction All life that has survived must have adapted to the conditions of its environment. Temperature, light, humidity, soil nutrients, etc., all influence the species within an environment. However, life in turn modifies, in various forms, its conditions. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Great Basin Watersheds
The Great Basin is the largest region of contiguous Endorheic basin, endorheic drainage basins in North America, and is encompassed by the Great Basin Divide. This is a list of the drainage basins in the Great Basin that are over , listed by the state containing most of the basin. Utah * Great Salt Lake (Idaho, Utah, Wyoming) ** Bear River (Great Salt Lake), Bear River (Idaho, Utah, Wyoming) *** Malad River (Idaho-Utah), Malad River (Idaho, Utah) *** Little Bear River (Idaho, Utah) *** Bear Lake (Idaho–Utah), Bear Lake (Idaho, Utah) ** Weber River (Utah, Wyoming) ** Jordan River (Utah), Jordan River (Utah) *** Utah Lake (Utah) **** Provo River (Utah), Provo River (Utah) **** Spanish Fork (Utah), Spanish Fork (Utah) ** Skull Valley (Utah), Skull Valley (Utah) ** Deep Creek (Curlew Valley), Deep Creek (Curlew Valley) (Idaho, Utah) * Pine Valley (Beaver, Millard, Iron counties, Utah), Pine Valley (Utah) * Tule Valley (Utah) * Rush Valley (Utah) * Bonne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Irrigation
Irrigation (also referred to as watering) is the practice of applying controlled amounts of water to land to help grow Crop, crops, Landscape plant, landscape plants, and Lawn, lawns. Irrigation has been a key aspect of agriculture for over 5,000 years and has been developed by many cultures around the world. Irrigation helps to grow crops, maintain landscapes, and revegetation, revegetate disturbed soils in dry areas and during times of below-average rainfall. In addition to these uses, irrigation is also employed to protect crops from frost, suppress weed growth in grain fields, and prevent soil consolidation. It is also used to cool livestock, reduce dust, dispose of sewage, and support mining operations. Drainage, which involves the removal of surface and sub-surface water from a given location, is often studied in conjunction with irrigation. There are several methods of irrigation that differ in how water is supplied to plants. Surface irrigation, also known as gravity irri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burns, Oregon
Burns is a city in and the county seat of Harney County, in the U.S. state of Oregon. According to the 2010 census, the population was 2,806. Burns and the nearby city of Hines are home to about 60 percent of the people in the sparsely populated county, by area the largest in Oregon and the ninth largest in the United States. The Burns–Hines region has a high-desert climate but was much wetter in the recent geologic past. The Harney Basin was the largest of many depressions in which lakes formed in southeastern Oregon during the late Pleistocene. Remnants of an ancient lake that reached as far north as Burns are at the center of the Malheur National Wildlife Refuge, south of the city. Northern Paiutes or their ancestors, who were hunter-gatherers, have lived in the region for thousands of years. Since the arrival of Euro-Americans in the 19th century, cattle ranching and other forms of agriculture have dominated land use in the area. In 1930, logging in the mounta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2010 United States Census
The United States census of 2010 was the twenty-third United States national census. National Census Day, the reference day used for the census, was April 1, 2010. The census was taken via mail-in citizen self-reporting, with enumerators serving to spot-check randomly selected neighborhoods and communities. As part of a drive to increase the count's accuracy, 635,000 temporary enumerators were hired. The population of the United States was counted as 308,745,538, a 9.7% increase from the 2000 census. This was the first census in which all states recorded a population of over half a million people as well as the first in which all 100 largest cities recorded populations of over 200,000. Introduction As required by the United States Constitution, the U.S. census has been conducted every 10 years since 1790. The 2000 U.S. census was the previous census completed. Participation in the U.S. census is required by law of persons living in the United States in Title 13 of the United ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malheur National Wildlife Refuge
Malheur National Wildlife Refuge is a National Wildlife Refuge located roughly south of the city of Burns in Oregon's Harney Basin. Administered by the United States Fish and Wildlife Service, the refuge area is roughly T-shaped with the southernmost base at Frenchglen, the northeast section at Malheur Lake and the northwest section at Harney Lake. The refuge was created in 1908 by order of President Theodore Roosevelt to protect habitat for diverse waterfowl and migratory birds, and grew to encompass of public lands. A popular site for birding, fishing, hunting and hiking, the refuge gained widespread attention in early 2016 after its headquarters complex was occupied by armed anti-government protesters. History Archaeological research within the Harney Basin region, including near Burns, Oregon, demonstrates that it likely was home to Native Americans for about the past 16,000 to 15,000 years. The first recognizable remains of seasonal prehistoric dwellings appear later i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Duck
Duck is the common name for numerous species of waterfowl in the family Anatidae. Ducks are generally smaller and shorter-necked than swans and geese, which are members of the same family. Divided among several subfamilies, they are a form taxon; they do not represent a monophyletic group (the group of all descendants of a single common ancestral species), since swans and geese are not considered ducks. Ducks are mostly aquatic birds, and may be found in both fresh water and sea water. Ducks are sometimes confused with several types of unrelated water birds with similar forms, such as loons or divers, grebes, gallinules and coots. Etymology The word ''duck'' comes from Old English 'diver', a derivative of the verb 'to duck, bend down low as if to get under something, or dive', because of the way many species in the dabbling duck group feed by upending; compare with Dutch and German 'to dive'. This word replaced Old English / 'duck', possibly to avoid confusion with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird
Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Birds live worldwide and range in size from the bee hummingbird to the ostrich. There are about ten thousand living species, more than half of which are passerine, or "perching" birds. Birds have whose development varies according to species; the only known groups without wings are the extinct moa and elephant birds. Wings, which are modified forelimbs, gave birds the ability to fly, although further evolution has led to the loss of flight in some birds, including ratites, penguins, and diverse endemic island species. The digestive and respiratory systems of birds are also uniquely adapted for flight. Some bird species of aquatic environments, particularly seabirds and some waterbirds, have further evolved for swimming. B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat
In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical manifestation of its ecological niche. Thus "habitat" is a species-specific term, fundamentally different from concepts such as environment or vegetation assemblages, for which the term "habitat-type" is more appropriate. The physical factors may include (for example): soil, moisture, range of temperature, and light intensity. Biotic factors will include the availability of food and the presence or absence of predators. Every species has particular habitat requirements, with habitat generalist species able to thrive in a wide array of environmental conditions while habitat specialist species requiring a very limited set of factors to survive. The habitat of a species is not necessarily found in a geographical area, it can be the interior ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wetlands
A wetland is a distinct ecosystem that is flooded or saturated by water, either permanently (for years or decades) or seasonally (for weeks or months). Flooding results in oxygen-free (anoxic) processes prevailing, especially in the soils. The primary factor that distinguishes wetlands from terrestrial land forms or Body of water, water bodies is the characteristic vegetation of aquatic plants, adapted to the unique anoxic hydric soils. Wetlands are considered among the most biologically diverse of all ecosystems, serving as home to a wide range of plant and animal species. Methods for assessing wetland functions, wetland ecological health, and general wetland condition have been developed for many regions of the world. These methods have contributed to wetland conservation partly by raising public awareness of the functions some wetlands provide. Wetlands occur naturally on every continent. The water in wetlands is either freshwater, brackish or saltwater. The main wetland ty ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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