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Midge Lake
Midge Lake is the largest among numerous freshwater lakes on the ice-free Byers Peninsula, Livingston Island in the South Shetland Islands, Antarctica. The feature is arcuate in shape, extending 575 m in southwest-northeast direction and 125 m wide, surmounted by Chester Cone on the southeast, and draining through a 2 km stream north-northeastwards into Baba Tonka Cove. The lake's name derives from the chironomid midge ''Belgica antarctica'', a rare and localized insect in the South Shetlands, the imagos of which are found beneath the surrounding rock debris in summer. Location Midge Lake is centred at which is 860 m northwest of Chester Cone and 1.19 km southeast of President Hill (British mapping in 1968, detailed Spanish mapping in 1992, and Bulgarian mapping in 2005 and 2009). Maps Península Byers, Isla Livingston.Mapa topográfico a escala 1:25000. Madrid: Servicio Geográfico del Ejército, 1992. * L. Ivanov et al. Antarctica: Livingston Island ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chironomidae
The Chironomidae (informally known as chironomids, nonbiting midges, or lake flies) comprise a family of nematoceran flies with a global distribution. They are closely related to the Ceratopogonidae, Simuliidae, and Thaumaleidae. Many species superficially resemble mosquitoes, but they lack the wing scales and elongated mouthparts of the Culicidae. The name Chironomidae stems from the Ancient Greek word ''kheironómos'', "a pantomimist". Common names and biodiversity This is a large taxon of insects; some estimates of the species numbers suggest well over 10,000 world-wide. Males are easily recognized by their plumose antennae. Adults are known by a variety of vague and inconsistent common names, largely by confusion with other insects. For example, chironomids are known as "lake flies" in parts of Canada and Lake Winnebago, Wisconsin, but "bay flies" in the areas near the bay of Green Bay, Wisconsin. They are called "sand flies", "muckleheads", "muffleheads", "Canadian so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Composite Antarctic Gazetteer
The Composite Gazetteer of Antarctica (CGA) of the Scientific Committee on Antarctic Research (SCAR) is the authoritative international gazetteer containing all Antarctic toponyms published in national gazetteers, plus basic information about those names and the relevant geographical features. The Gazetteer includes also parts of the International Hydrographic Organization (IHO) General Bathymetric Chart of the Oceans (GEBCO) gazetteer for under-sea features situated south of 60° south latitude. , the overall content of the CGA amounts to 37,893 geographic names for 19,803 features including some 500 features with two or more entirely different names, contributed by the following sources: {, class="wikitable sortable" ! Country ! Names , - , United States , 13,192 , - , United Kingdom , 5,040 , - , Russia , 4,808 , - , New Zealand , 2,597 , - , Australia , 2,551 , - , Argentina , 2,545 , - , Chile , 1,866 , - , Norway , 1,706 , - , Bulgaria , 1,450 , - , G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
President Hill
President most commonly refers to: *President (corporate title) *President (education), a leader of a college or university *President (government title) President may also refer to: Automobiles * Nissan President, a 1966–2010 Japanese full-size sedan * Studebaker President, a 1926–1942 American full-size sedan * VinFast President, a 2020–present Vietnamese mid-size SUV Film and television *''Præsidenten'', a 1919 Danish silent film directed by Carl Theodor Dreyer * ''The President'' (1928 film), a German silent drama * ''President'' (1937 film), an Indian film * ''The President'' (1961 film) * ''The Presidents'' (film), a 2005 documentary * ''The President'' (2014 film) * ''The President'' (South Korean TV series), a 2010 South Korean television series * ''The President'' (Palestinian TV series), a 2013 Palestinian reality television show *''The President Show'', a 2017 Comedy Central political satirical parody sitcom Music *The Presidents (American soul band) *The P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imago
In biology, the imago (Latin for "image") is the last stage an insect attains during its metamorphosis, its process of growth and development; it is also called the imaginal stage, the stage in which the insect attains maturity. It follows the final ecdysis of the immature instars.Carpenter, Geo. H., The Life-Story of Insects. Cambridge University Press 1913. May be downloaded from: https://www.gutenberg.org/ebooks/16410 or https://archive.org/details/thelifestoryofin16410gut In a member of the Ametabola or Hemimetabola, in which metamorphosis is "incomplete", the final ecdysis follows the last immature or '' nymphal'' stage. In members of the Holometabola, in which there is a pupal stage, the final ecdysis follows emergence from the pupa, after which the metamorphosis is complete, although there is a prolonged period of maturation in some species. The imago is the only stage during which the insect is sexually mature and, if it is a winged species, has functional wings. The i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Midge
A midge is any small fly, including species in several families of non-mosquito Nematoceran Diptera. Midges are found (seasonally or otherwise) on practically every land area outside permanently arid deserts and the frigid zones. Some midges, such as many Phlebotominae (sand fly) and Simuliidae (black fly), are vectors of various diseases. Many others play useful roles as prey for insectivores, such as various frogs and swallows. Others are important as detritivores, and form part of various nutrient cycles. The habits of midges vary greatly from species to species, though within any particular family, midges commonly have similar ecological roles. Examples of families that include species of midges include: * Blephariceridae, net-winged midges * Cecidomyiidae, gall midges * Ceratopogonidae, biting midges (also known as no-see-ums or punkies in North Americabr>BugGuide/ref> and sandflies in Australia) * Chaoboridae, phantom midges * Chironomidae, non-biting midges (a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baba Tonka Cove
Baba Tonka Cove ( bg, залив Баба Тонка, zaliv Baba Tonka, ) is the 1.1 km wide cove indenting for 750 m the north coast of Byers Peninsula between Villard Point and Varadero Point on Livingston Island in the South Shetland Islands, Antarctica. The area was visited by early 19th century sealers. The cove is named after the Bulgarian revolutionary and national hero Tonka Obretenova (1812–1893), known as Baba Tonka ("Grandma Tonka"). Location Baba Tonka Cove is located at . British mapping in 1968, Spanish in 1993 and Bulgarian in 2009. Map * L.L. IvanovAntarctica: Livingston Island and Greenwich, Robert, Snow and Smith Islands.Scale 1:120000 topographic map. Troyan: Manfred Wörner Foundation, 2009. References Baba Tonka Cove.SCAR A scar (or scar tissue) is an area of fibrous tissue that replaces normal skin after an injury. Scars result from the biological process of wound repair in the skin, as well as in other organs, and tissues of the body. Thu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chester Cone
Chester Cone is the ice-free peak rising to 188 m in the central part of Byers Peninsula, Livingston Island in the South Shetland Islands, Antarctica surmounting Midge Lake to the northwest. The peak is named after the American Captain Chester whose sealing ship ''Essex'' visited the South Shetland Islands in 1821–22. Location The point is located at which is 8.56 km southeast of Start Point, 6.32 km northeast of Devils Point and 4.2 km west of Tsamblak Hill Tsamblak Hill ( bg, хълм Цамблак, ‘Halm Tsamblak’ \'h&lm 'tsam-blak\) is a rocky hill trending 900 m in north-south direction, 450 m wide and rising to 113 m in eastern Byers Peninsula on Livingston Island in the South Shetland Isla ... (British survey in 1957/58 and mapping in 1968, detailed Spanish mapping in 1992, and Bulgarian mapping in 2005 and 2009). Maps Península Byers, Isla Livingston.Mapa topográfico a escala 1:25000. Madrid: Servicio Geográfico del Ejército, 1992. (Map ima ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctica
Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean, it contains the geographic South Pole. Antarctica is the fifth-largest continent, being about 40% larger than Europe, and has an area of . Most of Antarctica is covered by the Antarctic ice sheet, with an average thickness of . Antarctica is, on average, the coldest, driest, and windiest of the continents, and it has the highest average elevation. It is mainly a polar desert, with annual precipitation of over along the coast and far less inland. About 70% of the world's freshwater reserves are frozen in Antarctica, which, if melted, would raise global sea levels by almost . Antarctica holds the record for the lowest measured temperature on Earth, . The coastal regions can reach temperatures over in summer. Native species of animals include mites, nematodes, penguins, seals and tardigrades. Where vegetation o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
