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Hucho Hucho
The huchen (''Hucho hucho'') (, from German), also known as Danube salmon or redfish (), is a large species of freshwater fish in the family Salmonidae native to the Danube basin in Central and Eastern Europe. It is the type species of genus '' Hucho'' (a.k.a. the taimens), being closely related (in the same subfamily) to salmon, trout, char and lenoks. Distribution The huchen is endemic to the Danube The Danube ( ; see also #Names and etymology, other names) is the List of rivers of Europe#Longest rivers, second-longest river in Europe, after the Volga in Russia. It flows through Central and Southeastern Europe, from the Black Forest sou ... basin in Europe where the remaining population is threatened primarily by river damming, resulting in habitat fragmentation and loss through river impoundment and disruption of the longitudinal continuity of rivers, cutting away fish from its spawning grounds, with overfishing and fisheries mismanagement as an additional issue in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Linnaeus
Carl Linnaeus (23 May 1707 – 10 January 1778), also known after ennoblement in 1761 as Carl von Linné,#Blunt, Blunt (2004), p. 171. was a Swedish biologist and physician who formalised binomial nomenclature, the modern system of naming organisms. He is known as the "father of modern Taxonomy (biology), taxonomy". Many of his writings were in Latin; his name is rendered in Latin as and, after his 1761 ennoblement, as . Linnaeus was the son of a curate and was born in Råshult, in the countryside of Småland, southern Sweden. He received most of his higher education at Uppsala University and began giving lectures in botany there in 1730. He lived abroad between 1735 and 1738, where he studied and also published the first edition of his ' in the Netherlands. He then returned to Sweden where he became professor of medicine and botany at Uppsala. In the 1740s, he was sent on several journeys through Sweden to find and classify plants and animals. In the 1750s and 1760s, he co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lenok
Lenoks, otherwise known as Asiatic trout or Manchurian trout,James Card: Fly fishing in South Korea.' Retrieved 22 June 2015. are salmonid fish of the genus ''Brachymystax'', native to rivers and lakes in Mongolia, Kazakhstan, wider Siberia (including Russian Far East), Northern China and Korea.Kartavtseva, I.V.; Ginatulina, L.K.; Nemkova, G.A.; and Shedko, S.V. (2013). Chromosomal study of the lenoks, Brachymystax (Salmoniformes, Salmonidae) from the South of the Russian Far East.'' Journal of Species Research 2(1): 91–98. Species There are four species in this genus, of which three are listed by FishBase: * '' Brachymystax lenok'' (Pallas, 1773) – sharp-snouted lenok * '' Brachymystax savinovi'' Mitrofanov, 1959 * '' Brachymystax tumensis'' T. Mori, 1930 – blunt-snouted lenok A fourth species, '' Brachymystax tsinlingensis'' S. C. Li, 1966, was revalidated in 2015. Traditionally, only ''B. lenok'' was recognized, including both sharp-snouted and blunt-snouted forms. B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carinthia
Carinthia ( ; ; ) is the southernmost and least densely populated States of Austria, Austrian state, in the Eastern Alps, and is noted for its mountains and lakes. The Lake Wolayer is a mountain lake on the Carinthian side of the Carnic Main Ridge, near the Plöcken Pass.The main language is Austrian German, with its non-standard dialects belonging to the Southern Bavarian group; Carinthian dialect group, Carinthian Slovene dialects, forms of a South Slavic languages, Slavic language that predominated in the southeastern part of the region up to the first half of the 20th century, are now spoken by Carinthian Slovenes, a small minority in the area. Carinthia's main Industry (economics), industries are tourism, electronics, engineering, forestry, and agriculture. Name The etymology of the name "Carinthia", similar to Carnia or Carniola, has not been conclusively established. The ''Ravenna Cosmography'' (about AD 700) referred to a Slavic settlement of the Eastern Alps, S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gail (river)
Gail (, ) is the name of a river in southern Austria, the largest right tributary of the Drava. Its drainage basin is . Etymology The name ''Gail'' developed from Old High German ''Gîla'', in turn from the form ''*Gīla'' (which was also the source of the Slovene name ''Zilja''). It is likely that the name is of substrate origin, predating the Roman presence in the area. The name is believed to derive from the pre-Romance word ''*gai̯li̯a'' (from the Indo-European root ''*gʰoi̯lo-''), meaning 'foaming (water), powerful'. The river is documented as ''Gila'' in a 1090 deed. The Slovene name ''Zilja'' is also commonly cited because the lower Gail Valley is a traditional settlement area of the Carinthian Slovenes and a language region of the distinct Gail Valley dialect. Course The river source is located east of the Kartitsch Saddle and the Puster Valley in the Tyrolean municipality of Obertilliach. It flows from west to east through the Southern Limestone Alps, between the Gai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drau
The Drava or Drave (, ; ; ; ; ), historically known as the Dravis or Dravus, is a river in southern Central Europe.''Utrata Fachwörterbuch: Geographie - Englisch-Deutsch/Deutsch-Englisch'' by Jürgen Utrata (2014). Retrieved 10 Apr 2014. With a length of ,Joint Drava River Corridor Analysis Report , 27 November 2014 or , if the length of its Sextner Bach source is added, it is the fifth or sixth longest tributary of the |
Inn (river)
The Inn (; ; ) is a river in Switzerland, Austria and Germany. The long river is a right tributary of the Danube, being the third largest tributary of the Danube by discharge. The highest point of its drainage basin is the summit of Piz Bernina at . The Engadine, the valley of the En, is the only Swiss valley whose waters end up in the Black Sea (via the Danube). Etymology The name Inn is derived from the old Celtic words ''en'' and ''wiktionary:Reconstruction:Proto-Celtic/ɸenos, enios'', meaning ''water''. In a document of 1338, the river was named ''Wasser'' (German for water). The first written mention from the years 105 to 109 (Publii Corneli Taciti historiarium liber tertius) reads: "''... Sextilius Felix... ad occupandam ripam Aeni fluminis, quod Raetos Noricosque interfluit, missus...''" ("... Sextilius Felix was sent to capture the banks of the Inn, which flows between the Rhaetian people and the Noric people.") The river is also mentioned by other authors of the Roman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austria
Austria, formally the Republic of Austria, is a landlocked country in Central Europe, lying in the Eastern Alps. It is a federation of nine Federal states of Austria, states, of which the capital Vienna is the List of largest cities in Austria, most populous city and state. Austria is bordered by Germany to the northwest, the Czech Republic to the north, Slovakia to the northeast, Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the west. The country occupies an area of and has Austrians, a population of around 9 million. The area of today's Austria has been inhabited since at least the Paleolithic, Paleolithic period. Around 400 BC, it was inhabited by the Celts and then annexed by the Roman Empire, Romans in the late 1st century BC. Christianization in the region began in the 4th and 5th centuries, during the late Western Roman Empire, Roman period, followed by the arrival of numerous Germanic tribes during the Migration Period. A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balkans
The Balkans ( , ), corresponding partially with the Balkan Peninsula, is a geographical area in southeastern Europe with various geographical and historical definitions. The region takes its name from the Balkan Mountains that stretch throughout the whole of Bulgaria. The Balkan Peninsula is bordered by the Adriatic Sea in the northwest, the Ionian Sea in the southwest, the Aegean Sea in the south, the Turkish straits in the east, and the Black Sea in the northeast. The northern border of the peninsula is variously defined. The highest point of the Balkans is Musala, , in the Rila mountain range, Bulgaria. The concept of the Balkan Peninsula was created by the German geographer August Zeune in 1808, who mistakenly considered the Balkan Mountains the dominant mountain system of southeastern Europe spanning from the Adriatic Sea to the Black Sea. In the 19th century the term ''Balkan Peninsula'' was a synonym for Rumelia, the parts of Europe that were provinces of the Ottoman E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overfishing
Overfishing is the removal of a species of fish (i.e. fishing) from a body of water at a rate greater than that the species can replenish its population naturally (i.e. the overexploitation of the fishery's existing Fish stocks, fish stock), resulting in the species becoming increasingly underpopulated in that area. Overfishing can occur in water bodies of any sizes, such as ponds, wetlands, rivers, lakes or oceans, and can result in resource depletion, reduced biological growth rates and low biomass (ecology), biomass levels. Sustained overfishing can lead to critical depensation, where the fish population is no longer able to sustain itself. Some forms of overfishing, such as the Threatened sharks, overfishing of sharks, has led to the upset of entire marine ecosystems. Types of overfishing include growth overfishing, recruitment overfishing, and ecosystem overfishing. Overfishing not only causes negative impacts on biodiversity and ecosystem functioning, but also reduces fish pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spawning Grounds
A spawning bed is an underwater solid surface on which fish spawn to reproduce themselves. In fishery management, a spawning bed is an artificial bed constructed by wildlife professionals in order to improve the ability of desired game fish to reproduce. Increasing the spawning ability of a fish population may reduce pressure on a fishery and improve the productivity of supplemental stocking from fish hatcheries. In the inland waters of North America, a typical spawning bed will consist of a series of concrete boxes filled with aggregate gravel. The concept is credited to the Kentucky Department of Fish and Wildlife. Joe McFarland, "Making Bass Beds", ''Outdoor Illinois'' XVI:5 (May 2008), pages 16-17. In a typical example of spawning beds in action, the Illinois Department of Natural Resources has installed approximately 50 largemouth bass spawning beds in Crab Orchard Lake in southern Illinois. Joe McFarland, "The Unique Refuge", ''Outdoor Illinois'' XIX:3 (March 2011), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat Fragmentation
Habitat fragmentation describes the emergence of discontinuities (fragmentation) in an organism's preferred environment (habitat), causing population fragmentation and ecosystem decay. Causes of habitat fragmentation include geological processes that slowly alter the layout of the physical environment (suspected of being one of the major causes of speciation), and human activity such as land conversion, which can alter the environment much faster and causes the extinction of many species. More specifically, habitat fragmentation is a process by which large and contiguous habitats get divided into smaller, isolated patches of habitats. Definition The term habitat fragmentation includes five discrete phenomena: * Reduction in the total area of the habitat * Decrease of the interior: edge ratio * Isolation of one habitat fragment from other areas of habitat * Breaking up of one patch of habitat into several smaller patches * Decrease in the average size of each patch of habit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
