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Kadleroshilik River
The Kadleroshilik River is a stream in the North Slope Borough of the U.S. state of Alaska. Flowing south to north, it empties into Foggy Island Bay in the Beaufort Sea, about east of Prudhoe Bay. It was named by Ernest de Koven Leffingwell for the nearby Kadleroshilik Pingo, the highest known pingo in the world, which Leffingwell also named. A fish study conducted by the Alaska Department of Fish and Game in 1995 reported Arctic grayling (''Thymallus arcticus''), Dolly Varden trout (''Salvelinus malma''), and ninespine stickleback (''Pungitius pungitius'') in the river. An earlier study had also reported the presence of slimy sculpin The slimy sculpin (''Cottus cognatus'') is a freshwater species of fish belonging to the family Cottidae, which is the largest sculpin family. They usually inhabit cold rocky streams or lakes across North America, ranging from the Great Lakes, so ... (''Cottus cognatus'').Hemming, p. 3. References Rivers of North Slope Borough, Alaska Ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
States Of The United States Of America
In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sovereignty with the federal government. Due to this shared sovereignty, Americans are citizens both of the federal republic and of the state in which they reside. State citizenship and residency are flexible, and no government approval is required to move between states, except for persons restricted by certain types of court orders (such as paroled convicts and children of divorced spouses who share child custody). State governments in the U.S. are allocated power by the people (of each respective state) through their individual state constitutions. All are grounded in republican principles (this being required by the federal constitution), and each provides for a government, consisting of three branches, each with separate and indepen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kadleroshilik Pingo
Kadleroshilik Pingo (or Kadleroshilik Mound) is a pingo located about southeast of Prudhoe Bay in the U.S. state of Alaska. Rising to an elevation of above the surrounding lake plain, it is the highest known pingo in the world. The pingo's existence was first noted in the 1919 monograph ''The Canning River Region, Northern Alaska'' by Ernest de Koven Leffingwell. Leffingwell, who had visited the site in 1911, adopted the Eskimo name for the mound, which he interpreted as possibly meaning "possesses something on top" or "which seems to approach"; he also named the nearby Kadleroshilik River for the mound. For her dissertation on the ecology of Alaskan pingos, based on studies conducted in the 1980s, Marilyn Drew Walker selected Kadleroshilik Pingo as one of her study sites specifically because of its unusual size. Botanical specimens she collected at the site are in the herbarium of the University of Alaska Museum of the North The University of Alaska Museum of the North is a c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slimy Sculpin
The slimy sculpin (''Cottus cognatus'') is a freshwater species of fish belonging to the family Cottidae, which is the largest sculpin family. They usually inhabit cold rocky streams or lakes across North America, ranging from the Great Lakes, southeast Minnesota, northeast Iowa, southwest Wisconsin and northeast Canada. Slimy sculpins have also been found roaming the cold streams of eastern Siberia. They are commonly confused with their closely related relatives, Mottled sculpin (''Cottus bairdi''), and with tubenose gobies who are both freshwater fishes as well. The slimy sculpin is a nocturnal fish that usually spends most of its time on the stream bottom and seeks shelter under rocks and logs, especially during spawning season. When it swims, it sometimes appears to be "hopping" along the bottom because of its inefficient ability to swim. This is partly due to the absence of a swim bladder, which normally gives buoyancy to a fish. The fish has been studied in waters where t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ninespine Stickleback
The ninespine stickleback (''Pungitius pungitius''), also called the ten-spined stickleback, is a freshwater species of fish in the family Gasterosteidae that inhabits temperate waters. It is widely but locally distributed throughout Eurasia and North America. Despite its name, the number of spines can vary from 8 to 12. Description The body of the ninespine stickleback tapers to a very narrow caudal peduncle and the caudal fin is fan-shaped. The body is less deep and more elongated than that of the three-spined stickleback with a thinner and longer caudal peduncle, but the best way of distinguishing these two species is the number of spines in front of the dorsal fin which, for this species, varies from seven to twelve although nine is the commonest number. This species does not have scales but there is a group of small bony plates on the narrowest part of the caudal peduncle at the lateral line. The mouth points upwards in this species. It is generally greyish or olive-brown wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dolly Varden Trout
The Dolly Varden trout (''Salvelinus malma'') is a species of salmonid fish native to cold-water tributaries of the Pacific Ocean in Asia and North America. It belongs to the genus ''Salvelinus'', or true chars, which includes 51 recognized species, the most prominent being the brook, lake and bull trout, as well as Arctic char. Although many populations are semi-anadromous, fluvial and lacustrine populations occur throughout its range. It is considered by taxonomists as part of the ''Salvelinus alpinus'' or Arctic char complex, as many populations of bull trout, Dolly Varden trout and Arctic char overlap. Taxonomy The scientific name of the Dolly Varden is ''Salvelinus malma''. The species was originally named by German naturalist and taxonomist Johann Julius Walbaum in 1792 based on type specimens from the Kamchatka Peninsula in Siberia. The name ''malma'' was based on Russian , the local colloquial name for the fish. The Dolly Varden trout is considered part of the ''S. al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctic Grayling
The Arctic grayling (''Thymallus arcticus'') is a species of freshwater fish in the salmon family Salmonidae. ''T. arcticus'' is widespread throughout the Arctic and Pacific drainages in Canada, Alaska, and Siberia, as well as the upper Missouri River drainage in Montana. In the U.S. state of Arizona, an introduced population is found in the Lee Valley and other lakes in the White Mountains. They were also stocked at Toppings Lake by the Teton Range and in lakes in the high Uinta Mountains in Utah, as well as alpine lakes of the Boulder Mountains (Idaho) in central Idaho. Taxonomy The scientific name of the Arctic grayling is ''Thymallus arcticus''. It was named in 1776 by German zoologist Peter Simon Pallas from specimens collected in Russia. The name of the genus ''Thymallus'' first given to grayling (''T. thymallus'') described in the 1758 edition of ''Systema Naturae'' by Swedish zoologist Carl Linnaeus originates from the faint smell of the herb thyme, which emanates ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alaska Department Of Fish And Game
The Alaska Department of Fish and Game (ADF&G) is a department within the government of Alaska. ADF&G's mission is to protect, maintain, and improve the fish, game, and aquatic plant resources of the state, and manage their use and development in the best interest of the economy and the well-being of the people of the state, consistent with the sustained yield principle. ADF&G manages approximately 750 active fisheries, 26 game management units, and 32 special areas. From resource policy to public education, the department considers public involvement essential to its mission and goals. The department is committed to working with tribes in Alaska and with a diverse group of State and Federal agencies. The department works cooperatively with various universities and nongovernmental organizations in formal and informal partnership arrangements, and assists local research or baseline environmental monitoring through citizen science programs. History In 1949, the Territorial Legislatu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pingo
Pingos are intrapermafrost ice-cored hills, high and in diameter. They are typically conical in shape and grow and persist only in permafrost environments, such as the Arctic and subarctic. A pingo is a periglacial landform, which is defined as a non-glacial landform or process linked to colder climates. It is estimated that there are more than 11,000 pingos on Earth. The Tuktoyaktuk peninsula area has the greatest concentration of pingos in the world with a total of 1,350 pingos. There is currently remarkably limited data on pingos. History In 1825, John Franklin made the earliest description of a pingo when he climbed a small pingo on Ellice Island in the Mackenzie Delta. However, it was in 1938 that the term ''pingo'' was first borrowed from the Inuvialuit by the Arctic botanist Alf Erling Porsild in his paper on Earth mounds of the western Arctic coast of Canada and Alaska. Porsild Pingo in Tuktoyaktuk is named in his honour. The term pingos, which in Inuvialuktun m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ernest De Koven Leffingwell
Ernest de Koven Leffingwell (January 13, 1875January 27, 1971) was an arctic explorer, geologist and Spanish–American War veteran. During the period from 1906 to 1914, Leffingwell spent nine summers and six winters on the Arctic coast of Alaska, making 31 trips by dog sled or small boats. He created the first accurate map of a large part of the Alaskan arctic coastline. He was the first to scientifically describe permafrost and to pose theories about permafrost which have largely proven true. He accurately identified the oil potential of the North Slope region of Alaska. Biography Ernest de Koven Leffingwell was born January 13, 1875, in Knoxville, Illinois, to Charles and Elizabeth (née Francis) Leffingwell. He attended the grammar school at Racine College, then attended Trinity College, Hartford, Connecticut, where he was captain of the track team his senior year, graduated with the AB degree in 1895 and was awarded a MA in 1900. He studied physics and geology at the Univ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alaska
Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., it borders the Canadian province of British Columbia and the Yukon territory to the east; it also shares a maritime border with the Russian Federation's Chukotka Autonomous Okrug to the west, just across the Bering Strait. To the north are the Chukchi and Beaufort Seas of the Arctic Ocean, while the Pacific Ocean lies to the south and southwest. Alaska is by far the largest U.S. state by area, comprising more total area than the next three largest states (Texas, California, and Montana) combined. It represents the seventh-largest subnational division in the world. It is the third-least populous and the most sparsely populated state, but by far the continent's most populous territory located mostly north of the 60th parallel, with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prudhoe Bay, Alaska
Prudhoe Bay is a census-designated place (CDP) located in North Slope Borough in the U.S. state of Alaska. As of the 2010 census, the population of the CDP was 2,174 people, up from just five residents in the 2000 census; however, at any given time, several thousand transient workers support the Prudhoe Bay oil field. The airport, lodging and general store are located in Deadhorse, and the rigs and processing facilities are located on scattered gravel pads laid atop the tundra. It is only during winter that the surface is hard enough to support heavy equipment, and new construction happens at that time. Prudhoe Bay is the unofficial northern terminus of the Pan-American Highway. As the bay itself is still 10 miles further north through a security checkpoint, open water is not visible from the highway. A few tourists, arriving by bus after a two-day ride up the Dalton Highway from Fairbanks, come to see the tundra, the Arctic Ocean and the midnight sun, staying in lodgings ass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foggy Island Bay
Fog is a visible aerosol consisting of tiny water droplets or ice crystals suspended in the air at or near the Earth's surface. Reprint from Fog can be considered a type of low-lying cloud usually resembling stratus, and is heavily influenced by nearby bodies of water, topography, and wind conditions. In turn, fog affects many human activities, such as shipping, travel, and warfare. Fog appears when water vapor (water in its gaseous form) condenses. During condensation, molecules of water vapor combine to make tiny liquid water droplets that hang in the air. Sea fog, which shows up near bodies of saline water, is formed as water vapor condenses on bits of salt. Fog is similar to, but less transparent than, mist. Definition The term ''fog'' is typically distinguished from the more generic term ''cloud'' in that fog is low-lying, and the moisture in the fog is often generated locally (such as from a nearby body of water, like a lake or the ocean, or from nearby moist grou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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