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Montana Arctic Grayling
The Montana Arctic grayling (''Thymallus arcticus montanus'') is a North American freshwater fish in the salmon family Salmonidae. The Montana Arctic grayling, native to the upper Missouri River basin in Montana and Wyoming, is a disjunct population or subspecies of the more widespread Arctic grayling (''Thymallus arcticus''). It occurs in fluvial (or river–dwelling) and adfluvial, lacustrine (or lake–dwelling) forms. The Montana grayling is a species of special concern in Montana and had candidate status for listing under the national Endangered Species Act. It underwent a comprehensive status review by the U.S. Fish and Wildlife Service, which in 2014 decided not to list it as threatened or endangered. Current surviving native populations in the Big Hole River and Red Rock River drainages represent approximately four percent of the subspecies' historical range. Taxonomy The scientific name of the Montana Arctic grayling, when treated as a subspecies, is ''Thy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Fish
Freshwater fish are those that spend some or all of their lives in fresh water, such as rivers and lakes, with a salinity of less than 1.05%. These environments differ from marine conditions in many ways, especially the difference in levels of salinity. To survive fresh water, the fish need a range of physiology, physiological adaptations. 41.24% of all known species of fish are found in fresh water. This is primarily due to the rapid speciation that the scattered habitats make possible. When dealing with ponds and lakes, one might use the same basic models of speciation as when studying island biogeography. Physiology Freshwater fish differ physiologically from salt water fish in several respects. Their gills must be able to diffuse dissolved gases while keeping the salts in the body fluids inside. Their scales reduce water diffusion through the skin: freshwater fish that have lost too many scales will die. They also have well developed kidneys to reclaim salts from body flui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endangered
An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and invasive species. The International Union for Conservation of Nature (IUCN) Red List lists the global conservation status of many species, and various other agencies assess the status of species within particular areas. Many nations have laws that protect conservation-reliant species which, for example, forbid hunting, restrict land development, or create protected areas. Some endangered species are the target of extensive conservation efforts such as captive breeding and habitat restoration. Human activity is a significant cause in causing some species to become endangered. Conservation status The conservation status of a species indicates the likelihood that it will become extinct. Multiple factors are considered when assessing the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Falls (Missouri River)
The Great Falls of the Missouri River are a series of waterfalls on the upper Missouri River in north-central Montana in the United States. From upstream to downstream, the five falls along a segment of the riverCutright, Paul Russell, and Johnsgard, Paul A. ''Lewis and Clark: Pioneering Naturalists.'' 2d ed. Lincoln, Neb.: University of Nebraska Press, 2003. are: *Black Eagle Falls () *Colter Falls () * Rainbow Falls () *Crooked Falls, also known as Horseshoe Falls () * Big Falls, also known as the Great Falls, () The Missouri River drops a total of from the first of the falls to the last, which includes a combined of vertical plunges and of riverbed descent. The Great Falls have been described as "spectacular", one of the "scenic wonders of America", and "a major geographic discovery". When the Lewis and Clark Expedition became the first white men to see the falls in 1805, Meriwether Lewis said they were the grandest sight he had beheld thus far in the journey.Pritchett, M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Distinct Population Segment
{{no footnotes, date=February 2018 A distinct population segment (DPS) is the smallest division of a taxonomic species permitted to be protected under the U.S. Endangered Species Act. ''Species'', as defined in the Act for listing purposes, is a taxonomic species or subspecies of plant or animal, or in the case of vertebrate species, a distinct population segment. Criteria for designation The criteria for designation of a population or group of populations as a DPS was most recently articulated in a 1996 joint USFWS-NMFS The National Marine Fisheries Service (NMFS), informally known as NOAA Fisheries, is a United States federal agency within the U.S. Department of Commerce's National Oceanic and Atmospheric Administration (NOAA) that is responsible for the ste ... policy (61 FR 4722: February 7, 1996): Three elements are considered in a decision regarding the status of a possible DPS as endangered or threatened under the Act. These are applied similarly for addition to the l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gallatin County, Montana
Gallatin County is located in the U.S. state of Montana. With its county seat in Bozeman, it is the second-most populous county in Montana, with a population of 118,960 in the 2020 Census. The county's prominent geographical features are the Bridger mountains in the north, and the Gallatin mountains and Gallatin River in the south, named by Meriwether Lewis in 1805 for Albert Gallatin, the United States Treasury Secretary who formulated the Lewis and Clark Expedition. At the southern end of the county, West Yellowstone's entrance into Yellowstone National Park accounts for around half of all park visitors. Big Sky Resort, one of the largest ski resorts in the United States, lies in Gallatin and neighboring Madison counties, midway between Bozeman and West Yellowstone. History During the territorial era, a small patch of land known as "Lost Dakota" existed as a remote exclave of Dakota Territory until it was transferred to Gallatin County, Montana Territory, in 1873. Geogr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Geological And Geographical Survey Of The Territories
The United States Geological and Geographical Survey of the Territories was established by an act of Congress on 2 March 1867 as an agency under the Department of the Interior (later the General Land Office) tasked to complete a geographical survey of the State of Nebraska which had been admitted to the United States, Union the day before. The scope of the survey eventual grew to include all the Territories of the United States, American territories adjacent to the Rocky Mountains encompassing hundreds of thousands of square miles. The survey over its existence was headed by Ferdinand Vandeveer Hayden, Dr. Ferdinand Vandeveer Hayden who published a number of reports between 1867 and 1883 on the region’s geography, geology, topography, ethnology, philology, paleontology and other allied subjects. Congress originally appropriated $5,000 in 1867 for the survey of Nebraska and a similar amount the following year to survey the Wyoming Territory. As the survey’s workload increased over ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ferdinand Vandeveer Hayden
Ferdinand Vandeveer Hayden (September 7, 1829 – December 22, 1887) was an American geologist noted for his pioneering surveying expeditions of the Rocky Mountains in the late 19th century. He was also a physician who served with the Union Army during the Civil War. Early life Ferdinand Hayden was born in Westfield, Massachusetts. As a young boy he was fascinated with all nature and wildlife, which led him into the field of medicine. He worked in Cleveland under Jared Potter Kirtland and thereafter in Albany, NY, where he worked under James Hall, of the ''Geological Survey of New York''. He graduated from Oberlin College in 1850 and from the Albany Medical College in 1853, where he attracted the notice of Professor James Hall, state geologist of New York, through whose influence he was induced to join in an exploration of Nebraska Territory, with Fielding B. Meek to study geology and collect fossils. Hall sent him on his first geological venture in the summer of 1853. Be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meagher County, Montana
Meagher County (pronounced Marr) is a county located in the U.S. state of Montana. As of the 2020 census, the population was 1,927. Its county seat is White Sulphur Springs. According to the United States Census Bureau, the 2010 center of population of Montana is located in Meagher County at History Meagher County was named for Thomas Francis Meagher, territorial governor of Montana. The first county seat was Diamond City, the main city of the Confederate Gulch mining district. This area is no longer part of Meagher County, but today lies in neighboring Broadwater County. Geography According to the United States Census Bureau, the county has a total area of , of which is land and (0.1%) is water. Major highways * U.S. Highway 12 * U.S. Highway 89 Adjacent counties * Cascade County - north * Judith Basin County - northeast * Wheatland County - east * Sweet Grass County - southeast * Park County - south * Gallatin County - south * Broadwater County - west * Le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Sulphur Springs, Montana
White Sulphur Springs is a city in and the county seat of Meagher County, Montana, United States. The population was 955 at the 2020 census. The center of population of Montana is located in White Sulphur Springs. White Sulphur Springs was originally called Brewers Springs, after James Scott Brewer, who laid claim to the thermal springs in 1866. In 1876 the town name changed. Geography and climate White Sulphur Springs is located at (46.546396, -110.902552). The Castle Mountains are east of town. According to the United States Census Bureau, the city has a total area of , all land. Demographics 2010 census At the 2010 census there were 939 people in 433 households, including 255 families, in the city. The population density was . There were 563 housing units at an average density of . The racial makeup of the city was 97.2% White, 0.1% African American, 0.3% Native American, 0.4% Asian, 0.2% from other races, and 1.7% from two or more races. Hispanic or Latino of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smith River (Montana)
Smith River is a tributary of the Missouri River, in central Montana, in the United States. It rises in southern Meagher County in the Castle Mountains and flows northwest in the valley between the Big Belt and Little Belt mountains, past White Sulphur Springs and past Smith River State Park. It turns north-northwest (NNW), and is joined by Hound Creek in Cascade County, and joins the Missouri approximately southwest of Great Falls. The Smith is a Class I river from the Camp Baker Fishing Access site near Ft. Logan to its confluence with the Missouri River for public access for recreational purposes.Stream Access in Montana Noted for its spectacular scenery and blue-ribbon trout fishery, the Smith River is unique in that it has only one public put-in and one public take-out for the entire segment of river. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montana Territory
The Territory of Montana was an organized incorporated territory of the United States that existed from May 26, 1864, until November 8, 1889, when it was admitted as the 41st state in the Union as the state of Montana. Original boundaries The Montana Territory was organized out of the existing Idaho Territory by Act of Congress and signed into law by President Abraham Lincoln on May 26, 1864. The areas east of the Continental Divide had been previously part of the Nebraska Territory and Dakota Territory and had been acquired by the United States in the Louisiana Purchase. The territory also included a portion of the Idaho Territory west of the continental divide and east of the Bitterroot Range, which had been acquired by the United States in the Oregon Treaty, and originally included in the Oregon Territory. The part of the Oregon Territory that became part of Montana had been split off as part of the Washington Territory. The boundary between the Washington Territory and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
