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Aarhus River
Aarhus River () is a long river, in eastern Jutland, Denmark. The river flows through the large river valley of Aarhus Ådal. The valley itself, stretches from Silkeborg to the coastal city of Aarhus, but the Aarhus River only runs through the easternmost parts. The river drains a basin of in the eastern part of Søhøjlandet and discharges into the Bay of Aarhus which is an embayment of the Kattegat. It originates above sea level in the swampy bogland of Astrup Mose close to Stilling-Solbjerg Lake, southwest of the city of Aarhus (56°6' northern latitude, 10°9' eastern longitude) and exits into Aarhus Harbour at 56°9' northern latitude, 10°13' eastern longitude. The river defines the border between Skanderborg and Aarhus Municipality during its first few kilometres. History Aarhus River has been important for the development of the city of Aarhus since its foundation in the early Viking Age, and archaeological and historical research suggests that it played a crucia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aarhus
Aarhus (, , ; officially spelled Ã…rhus from 1948 until 1 January 2011) is the second-largest city in Denmark and the seat of Aarhus municipality, Aarhus Municipality. It is located on the eastern shore of Jutland in the Kattegat sea and approximately northwest of Copenhagen. Dating back to the late 8th century, Aarhus was founded as a harbour settlement at the mouth of the Aarhus River and quickly became a trade hub. The first Christian church was built here around the year 900 and later in the Viking Age the town was fortified with defensive ramparts. The Ancient See of Aarhus, bishopric of Aarhus grew steadily stronger and more prosperous, building several religious institutions in the town during the early Middle Ages. Trade continued to improve, although it was not until 1441 that Aarhus was granted market town privileges, and the population of Aarhus remained relatively stable until the 19th century. The city began to grow significantly as trade prospered in the mid-18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Level
Mean sea level (MSL, often shortened to sea level) is an mean, average surface level of one or more among Earth's coastal Body of water, bodies of water from which heights such as elevation may be measured. The global MSL is a type of vertical datuma standardised geodetic datumthat is used, for example, as a chart datum in cartography and Navigation, marine navigation, or, in aviation, as the standard sea level at which atmospheric pressure is measured to Calibration, calibrate altitude and, consequently, aircraft flight levels. A common and relatively straightforward mean sea-level standard is instead a long-term average of tide gauge readings at a particular reference location. The term ''above sea level'' generally refers to the height above mean sea level (AMSL). The term APSL means above present sea level, comparing sea levels in the past with the level today. Earth's radius at sea level is 6,378.137 km (3,963.191 mi) at the equator. It is 6,356.752 km (3,94 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jyllandsposten
(; English: ''The Morning Newspaper "The Jutland Post"''), commonly shortened to or ''JP'', is a Danish daily broadsheet newspaper. It is based in Aarhus C, Jutland, and with a weekday circulation of approximately 120,000 copies.Publication figures for Dansk Oplagskontrol (in danish) , 25 April 2010. The foundation behind the newspaper, Jyllands-Postens Fond, defines it as an independent () newspaper. The paper officially su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ã…boulevarden
Åboulevarden is a street and promenade in Aarhus, Denmark. It is 975 meters long and runs west to east from ''Vester Allé'' to ''Europaplads'' at Dokk1. The street is situated in the Indre by neighborhood where it is a popular thoroughfare for pedestrians. The center contains Aarhus river which splits the street in a north and south side. The north side is pedestrianized in its entire length and contains the park Mølleparken and the recreational space ''Vadestedet'' (The Ford). The south side has a road on the western third, providing access to ''Emil Vetts Passage'', ''Busgaden'' and the parking complex for Magasin du Nord. The east section is one of the most popular areas in the city for outdoor congregation, packed with bars and cafés. History Aarhus originates as a Viking fort that was defended by moats and ramparts up to the Middle Ages. The precursor to Åboulevarden stems from 1477 when king Christian I gave permission to develop the southern ramparts along the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trout
Trout (: trout) is a generic common name for numerous species of carnivorous freshwater ray-finned fishes belonging to the genera '' Oncorhynchus'', ''Salmo'' and ''Salvelinus'', all of which are members of the subfamily Salmoninae in the family Salmonidae. The word ''trout'' is also used for some similar-shaped but non-salmonid fish, such as the spotted seatrout/speckled trout (''Cynoscion nebulosus'', which is actually a croaker). Trout are closely related to salmon and have similar migratory life cycles. Most trout are strictly potamodromous, spending their entire lives exclusively in freshwater lakes, rivers and wetlands and migrating upstream to spawn in the shallow gravel beds of smaller headwater creeks. The hatched fry and juvenile trout, known as ''alevin'' and ''parr'', will stay upstream growing for years before migrating down to larger waterbodies as maturing adults. There are some anadromous species of trout, such as the steelhead (a coastal subs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Farms
Fish farming or pisciculture involves commercial breeding of fish, most often for food, in fish tanks or artificial enclosures such as fish ponds. It is a particular type of aquaculture, which is the controlled cultivation and harvesting of aquatic animals such as fish, crustaceans, molluscs and so on, in natural or pseudo-natural environments. A facility that releases juvenile fish into the wild for recreational fishing or to supplement a species' natural numbers is generally referred to as a fish hatchery. Worldwide, the most important fish species produced in fish farming are carp, catfish, salmon and tilapia. Global demand is increasing for dietary fish protein, which has resulted in widespread overfishing in wild fisheries, resulting in significant decrease in fish stocks and even complete depletion in some regions. Fish farming allows establishment of artificial fish colonies that are provided with sufficient feeding, protection from natural predators and competitive threa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biodiversity
Biodiversity is the variability of life, life on Earth. It can be measured on various levels. There is for example genetic variability, species diversity, ecosystem diversity and Phylogenetics, phylogenetic diversity. Diversity is not distributed evenly on Earth. It is greater in the tropics as a result of the warm climate and high primary productivity in the region near the equator. Tropical forest ecosystems cover less than one-fifth of Earth's terrestrial area and contain about 50% of the world's species. There are latitudinal gradients in species diversity for both marine and terrestrial taxa. Since Abiogenesis, life began on Earth, six major mass extinctions and several minor events have led to large and sudden drops in biodiversity. The Phanerozoic aeon (the last 540 million years) marked a rapid growth in biodiversity via the Cambrian explosion. In this period, the majority of Multicellular organism, multicellular Phylum, phyla first appeared. The next 400 mil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eutrofication
Eutrophication is a general term describing a process in which nutrients accumulate in a body of water, resulting in an increased growth of organisms that may deplete the oxygen in the water; ie. the process of too many plants growing on the surface of a river, lake, etc., often because chemicals that are used to help crops grow have been carried there by rain. Eutrophication may occur naturally or as a result of human actions. Manmade, or cultural, eutrophication occurs when sewage, Industrial wastewater treatment, industrial wastewater, fertilizer runoff, and other nutrient sources are released into the environment. Such nutrient pollution usually causes algal blooms and bacterial growth, resulting in the depletion of dissolved oxygen in water and causing substantial environmental degradation. Many policies have been introduced to combat eutrophication, including the United Nations Development Program (UNDP)'s sustainability development goals. Approaches for prevention and re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecosystem
An ecosystem (or ecological system) is a system formed by Organism, organisms in interaction with their Biophysical environment, environment. The Biotic material, biotic and abiotic components are linked together through nutrient cycles and energy flows. Ecosystems are controlled by external and internal Environmental factor, factors. External factors—including climate—control the ecosystem's structure, but are not influenced by it. By contrast, internal factors control and are controlled by ecosystem processes; these include decomposition, the types of species present, root competition, shading, disturbance, and succession. While external factors generally determine which Resource (biology), resource inputs an ecosystem has, their availability within the ecosystem is controlled by internal factors. Ecosystems are wikt:dynamic, dynamic, subject to periodic disturbances and always in the process of recovering from past disturbances. The tendency of an ecosystem to remain clo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Pike
The northern pike (''Esox lucius'') is a species of carnivorous fish of the genus ''Esox'' (pikes). They are commonly found in brackish water, moderately salty and fresh waters of the Northern Hemisphere (''i.e.'' holarctic in distribution). They are known simply as a pike (Plural, : pike) in Great Britain, Ireland, most of Eastern Europe, Canada and the United States, U.S., although in the Midwestern United States, they may just be called a Northern. Pike can grow to a relatively large size. Their average length is about , with maximum recorded lengths of up to and maximum weights of . The International Game Fish Association, IGFA currently recognises a pike caught by Lothar Louis on Greffern Lake, Germany, on 16 October 1986, as the all-tackle world-record holding northern pike. Northern pike grow to larger sizes in Eurasia than in North America, and in coastal Eurasian regions than inland ones. Etymology The northern pike gets its common name from its resemblance to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viking Age
The Viking Age (about ) was the period during the Middle Ages when Norsemen known as Vikings undertook large-scale raiding, colonising, conquest, and trading throughout Europe and reached North America. The Viking Age applies not only to their homeland of Scandinavia but also to any place significantly settled by North Germanic peoples, Scandinavians during the period. Although few of the Scandinavians of the Viking Age were Vikings in the sense of being engaged in piracy, they are often referred to as ''Vikings'' as well as ''Norsemen''. Voyaging by sea from their homelands in Denmark, Norway, and Sweden, the Norse people settled in the Viking activity in the British Isles, British Isles, History of Ireland (800–1169), Ireland, the Faroe Islands, Settlement of Iceland, Iceland, Norse settlements in Greenland, Greenland, History of Normandy, Normandy, and the Baltic Sea, Baltic coast and along the Trade route from the Varangians to the Greeks, Dnieper and Volga trade rout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aroa Viking Town 1
''Aroa'' is a genus of moths in the subfamily Lymantriinae first described by Francis Walker in 1855. Species are distributed in South Africa, China, throughout India, Sri Lanka, Myanmar, and Java. Description They are diurnal fliers. The genus differs from ''Orgyia ''Orgyia'' is a genus of tussock moths of the family Erebidae. The genus was described by Ochsenheimer in 1810. The species are cosmopolitan, except for the Neotropical realm. Description The male flies during the day. Its palpi are short, porr ...'' due to much longer palpi and less-hairy body. Third joint prominent. Legs are less hairy. Female has fully developed wings. Antennae branches are shorter than in male. Species Some species of this genus are: *'' Aroa abalia'' Collenette, 1949 western Java *'' Aroa achrodisca'' Hampson, 1910 Senegal *'' Aroa anthora'' (Felder, 1874) *'' Aroa asthenes'' Collenette, 1938 Palawan *'' Aroa atrella'' Hampson, 893/small> Sikkim, Assam *'' Aroa atrescens'' Hampson, 1897 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
