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Lake Matano
Lake Matano ( id, Danau Matano), also known as Matana, is a natural lake in East Luwu Regency, South Sulawesi province, Indonesia. With a depth of , it is the deepest lake in Indonesia (ranked by maximum depth), the 10th deepest lake in the world and the deepest lake on an island by maximum depth. The surface elevation from mean sea level is only , which means that the deepest portion of the lake is below sea level ( cryptodepression). It is one of the two major lakes (the other being Lake Towuti) in the Malili Lake system. Endemic animals and plants Lake Matano is home to many species of endemic fish and other animals (e.g. ''Caridina'' shrimps, Parathelphusid crabs and '' Tylomelania'' snails) as well as many plants. The endemic fishes of Matano have been compared to the species swarms of the Rift Valley Lakes of Africa. While not as diverse, they are thought to have all arisen from a single ancestor species and diversified into numerous different species, which now fil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Sulawesi
South Sulawesi ( id, Sulawesi Selatan) is a province in the southern peninsula of Sulawesi. The Selayar Islands archipelago to the south of Sulawesi is also part of the province. The capital is Makassar. The province is bordered by Central Sulawesi and West Sulawesi to the north, the Gulf of Bone and Southeast Sulawesi to the east, Makassar Strait to the west, and Flores Sea to the south. The 2010 census estimated the population as 8,032,551 which makes South Sulawesi the most populous province on the island (46% of the population of Sulawesi is in South Sulawesi), and the sixth most populous province in Indonesia. At the 2020 Census this had risen to 9,073,509,Badan Pusat Statistik, Jakarta, 2021. and the official estimate as at mid 2021 was 9,139,531. The main ethnic groups in South Sulawesi are the Buginese, Makassarese, Toraja, and Mandar. The economy of the province is based on agriculture, fishing, and mining of gold, magnesium, iron and other metals. The pinisi, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mugilogobius Adeia
''Mugilogobius adeia'' is a species of goby endemic to Lake Matano on the Indonesian island of Sulawesi where it inhabits areas with a number of shells of the gastropod ''Tylomelania gemmifera ''Tylomelania gemmifera'' is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Pachychilidae. Distribution This species occurs in Malili lakes, Sulawesi, Indonesia. It occurs in one lake; the type ...'' in which it seeks shelter. This species can reach a length of TL. References adeia Freshwater fish of Sulawesi Fish described in 1992 Taxa named by Helen K. Larson Taxa named by Maurice Kottelat Taxonomy articles created by Polbot {{Gobiiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proceedings Of The National Academy Of Sciences
''Proceedings of the National Academy of Sciences of the United States of America'' (often abbreviated ''PNAS'' or ''PNAS USA'') is a peer-reviewed multidisciplinary scientific journal. It is the official journal of the National Academy of Sciences, published since 1915, and publishes original research, scientific reviews, commentaries, and letters. According to ''Journal Citation Reports'', the journal has a 2021 impact factor of 12.779. ''PNAS'' is the second most cited scientific journal, with more than 1.9 million cumulative citations from 2008 to 2018. In the mass media, ''PNAS'' has been described variously as "prestigious", "sedate", "renowned" and "high impact". ''PNAS'' is a delayed open access journal, with an embargo period of six months that can be bypassed for an author fee ( hybrid open access). Since September 2017, open access articles are published under a Creative Commons license. Since January 2019, ''PNAS'' has been online-only, although print issues are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banded Iron Formation
Banded iron formations (also known as banded ironstone formations or BIFs) are distinctive units of sedimentary rock consisting of alternating layers of iron oxides and iron-poor chert. They can be up to several hundred meters in thickness and extend laterally for several hundred kilometers. Almost all of these formations are of Precambrian age and are thought to record the oxygenation of the Earth's oceans. Some of the Earth's oldest rock formations, which formed about ( Ma), are associated with banded iron formations. Banded iron formations are thought to have formed in sea water as the result of oxygen production by photosynthetic cyanobacteria. The oxygen combined with dissolved iron in Earth's oceans to form insoluble iron oxides, which precipitated out, forming a thin layer on the ocean floor. Each band is similar to a varve, resulting from cyclic variations in oxygen production. Banded iron formations were first discovered in northern Michigan in 1844. Banded iron f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phototroph
Phototrophs () are organisms that carry out photon capture to produce complex organic compounds (e.g. carbohydrates) and acquire energy. They use the energy from light to carry out various cellular metabolic processes. It is a common misconception that phototrophs are obligatorily photosynthetic. Many, but not all, phototrophs often photosynthesize: they anabolically convert carbon dioxide into organic material to be utilized structurally, functionally, or as a source for later catabolic processes (e.g. in the form of starches, sugars and fats). All phototrophs either use electron transport chains or direct proton pumping to establish an electrochemical gradient which is utilized by ATP synthase, to provide the molecular energy currency for the cell. Phototrophs can be either autotrophs or heterotrophs. If their electron and hydrogen donors are inorganic compounds (e.g. , as in some purple sulfur bacteria, or , as in some green sulfur bacteria) they can be also called lit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McGill University
McGill University (french: link=no, Université McGill) is an English-language public research university located in Montreal, Quebec, Canada. Founded in 1821 by royal charter granted by King George IV,Frost, Stanley Brice. ''McGill University, Vol. I. For the Advancement of Learning, 1801–1895.'' McGill-Queen's University Press, 1980. the university bears the name of James McGill, a Scottish merchant whose bequest in 1813 formed the university's precursor, University of McGill College (or simply, McGill College); the name was officially changed to McGill University in 1885. McGill's main campus is on the slope of Mount Royal in downtown Montreal in the borough of Ville-Marie, with a second campus situated in Sainte-Anne-de-Bellevue, west of the main campus on Montreal Island. The university is one of two members of the Association of American Universities located outside the United States, alongside the University of Toronto, and is the only Canadian member of the Glob ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archean
The Archean Eon ( , also spelled Archaean or Archæan) is the second of four eon (geology), geologic eons of History of Earth, Earth's history, representing the time from . The Archean was preceded by the Hadean Eon and followed by the Proterozoic. The Earth during the Archean was mostly a water world: there was continental crust, but much of it was under an ocean deeper than today's ocean. Except for some trace minerals, today's oldest continental crust dates back to the Archean. Much of the geological detail of the Archean has been destroyed by subsequent activity. The Earliest known life forms, earliest known life started in the Archean. Life was simple throughout the Archean, mostly represented by shallow-water microbial mats called stromatolites, and the atmosphere lacked free oxygen. Etymology and changes in classification The word ''Archean'' comes from the Greek word (), meaning 'beginning, origin'. It was first used in 1872, when it meant 'of the earliest geological ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science News
''Science News (SN)'' is an American bi-weekly magazine devoted to articles about new scientific and technical developments, typically gleaned from recent scientific and technical journals. History ''Science News'' has been published since 1922 by Society for Science & the Public, a non-profit organization founded by E. W. Scripps in 1920. American chemist Edwin Slosson served as the publication's first editor. From 1922 to 1966, it was called ''Science News Letter''. The title was changed to ''Science News'' with the March 12, 1966 issue (vol. 89, no. 11). Tom Siegfried was the editor from 2007 to 2012. In 2012, Siegfried stepped down, and Eva Emerson became the Editor in Chief of the magazine. In 2017, Eva Emerson stepped down to become the editor of a new digital magazine, Annual Reviews. On February 1, 2018 Nancy Shute became the Editor in Chief of the magazine. In April 2008, the magazine changed from a weekly format to the current biweekly format, and the website ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anoxic Waters
Anoxic waters are areas of sea water, fresh water, or groundwater that are depleted of dissolved oxygen. The US Geological Survey defines anoxic groundwater as those with dissolved oxygen concentration of less than 0.5 milligrams per litre. Anoxic waters can be contrasted with hypoxic waters, which are low (but not lacking) in dissolved oxygen. This condition is generally found in areas that have restricted water exchange. In most cases, oxygen is prevented from reaching the deeper levels by a physical barrier, as well as by a pronounced density stratification, in which, for instance, heavier hypersaline waters rest at the bottom of a basin. Anoxic conditions will occur if the rate of oxidation of organic matter by bacteria is greater than the supply of dissolved oxygen. Anoxic waters are a natural phenomenon, and have occurred throughout geological history. The Permian–Triassic extinction event, a mass extinction of species from the world's oceans, may have resulted fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muna Island
Muna (Pulau Muna) is an island in the Southeast Sulawesi province of Indonesia with an area of and had a population of 316,293 at the 2010 Census and 368,654 at the 2020 Census.Badan Pusat Statistik, Jakarta, 2021. It is just southeast of the island of Sulawesi and west of Buton Island. It currently comprises most of three administrative regencies within the province: Muna Regency Muna Regency (''Kabupaten Muna'') is a regency of Southeast Sulawesi Province of Indonesia, covering parts of the island of Muna as well as part of the neighbouring Buton Island and smaller islands off its coast. Until 2014 it had an area of 2 ... (''Kabupaten Muna''), West Muna Regency (''Kabupaten Muna Barat''), and Central Buton Regency (''Kabupaten Buton Tengah''). References {{Authority control Islands of Sulawesi Landforms of Southeast Sulawesi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enhydris Matannensis
''Enhydris'' is a genus of slightly venomous, rear-fanged, snakes in the family Homalopsidae. The genus is endemic to the tropical area of Indo-Australian region. Species The following 6 species are recognized: * '' Enhydris chanardi'' Murphy & Voris, 2005 * ''Enhydris enhydris'' (Schneider, 1799) * '' Enhydris innominata'' ( Morice, 1875) * '' Enhydris jagorii'' ( W. Peters, 1863) * '' Enhydris longicauda'' ( Bourret, 1934) * '' Enhydris subtaeniata'' (Bourret, 1934) Several additional species have traditionally been placed here, but are now often in genera such as '' Subsessor'' and '' Pseudoferania''. Another species, '' Enhydris smithi'' , was considered to be a valid species by herpetologists M.A. Smith 1943, Das 2010, and Wallach et al. 2014, but was considered to be a synonym of ''Enhydris jagorii'' by Cox et al. 1998, and Murphy & Voris 2014. ''Nota bene'': In the list above, a binomial authority in parentheses indicates that the species was originally described i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flowerhorn Cichlid
Flowerhorn cichlids are ornamental aquarium fish noted for their vivid colors and the distinctively shaped heads for which they are named. Their head protuberance is formally called a nuchal hump. Like blood parrot cichlids, they are hybrids that exist in the wild only because of their release. Flowerhorns first emerged for sale on the aquarium market in Malaysia in the late 1990s and soon became popular in many countries in Asia. They are commonly kept by hobbyists in the US, Asia, and Europe. Numerous cast-off flowerhorns have been released to the wild, especially in Singapore and Malaysia, where they have become an invasive pest animal. Their importation is banned in Australia. Origin Flowerhorn breeding dates to 1993. Taiwanese and Malaysian peoples admired fish with protruding heads, known as 'kaloi' or 'warships', found in the western part of the nation. The slightly protruding forehead and long tail of cichlids were prized in Taiwanese society as bringing luck in geoma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
