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Freshwater Pearl Mussel
The freshwater pearl mussel (''Margaritifera margaritifera'') is an endangered species of freshwater mussel, an aquatic bivalve mollusc in the family Margaritiferidae. Although the name "freshwater pearl mussel" is often used for this species, other freshwater mussel species (e.g. '' Margaritifera auricularia'') can also create pearls and some can also be used as a source of mother of pearl. Most cultured pearls today come from ''Hyriopsis'' species in Asia, or ''Amblema'' species in North America, both members of the related family Unionidae; pearls are also found within species in the genus ''Unio''. The interior of the shell of ''Margaritifera margaritifera'' has thick nacre (the inner mother of pearl layer of the shell). This species is capable of making fine-quality pearls, and was historically exploited in the search for pearls from wild sources. In recent times, the Russian malacologist Valeriy Zyuganov received worldwide reputation after he discovered that the pear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Margaritifera Auricularia
''Margaritifera auricularia'' is a species of European freshwater mussel, an aquatic bivalve mollusk in the family Margaritiferidae, the freshwater pearl mussels. Formerly found throughout western and central Europe, the species is now critically endangered and is one of the rarest invertebrates worldwide, being confined to a few rivers in Spain and France. ''M. auricularia'' is commonly known as Spengler's freshwater mussel in honour of Lorenz Spengler, who first described this species. Description Large shells are up to 180 mm in length. Taxonomy There are different opinions on the taxonomy of this species. The species was originally described as ''Unio auricularius'' Spengler, 1793. When it is placed in the genus '' Margaritifera'' Schumacher, 1816, it is considered to be: * ''Margaritifera auricularia'' (Spengler, 1793) At other times it is placed in the genus '' Pseudunio'' F. Haas, 1910, in which case it is known as: * ''Pseudunio auricularia'' (Spengler, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Linnaeus
Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his Nobility#Ennoblement, ennoblement in 1761 as Carl von Linné#Blunt, Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, 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 born in Råshult, the countryside of Småland, in 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Negligible Senescence
Negligible senescence is a term coined by biogerontologist Caleb Finch to denote organisms that do not exhibit evidence of biological aging (senescence), such as measurable reductions in their reproductive capability, measurable functional decline, or rising death rates with age. There are many species where scientists have seen no increase in mortality after maturity. This may mean that the lifespan of the organism is so long that researchers' subjects have not yet lived up to the time when a measure of the species' longevity can be made. Turtles, for example, were once thought to lack senescence, but more extensive observations have found evidence of decreasing fitness with age. Study of negligibly senescent animals may provide clues that lead to better understanding of the aging process and influence theories of aging. The phenomenon of negligible senescence in some animals is a traditional argument for attempting to achieve similar negligible senescence in humans by technologi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lower Austria
Lower Austria (german: Niederösterreich; Austro-Bavarian: ''Niedaöstareich'', ''Niedaestareich'') is one of the nine states of Austria, located in the northeastern corner of the country. Since 1986, the capital of Lower Austria has been Sankt Pölten, replacing Vienna which became a separate state in 1921. With a land area of and a population of 1.685 million people, Lower Austria is the second most populous state in Austria (after Vienna). Other large cities are Amstetten, Klosterneuburg, Krems an der Donau, Stockerau and Wiener Neustadt. Geography With a land area of situated east of Upper Austria, Lower Austria is the country's largest state. Lower Austria derives its name from its downriver location on the Enns River which flows from the west to the east. Lower Austria has an international border, long, with the Czech Republic ( South Bohemia and South Moravia Regions) and Slovakia ( Bratislava and Trnava Regions). The state has the second longest external border ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upper Austria
Upper Austria (german: Oberösterreich ; bar, Obaöstareich) is one of the nine states or of Austria. Its capital is Linz. Upper Austria borders Germany and the Czech Republic, as well as the other Austrian states of Lower Austria, Styria, and Salzburg. With an area of and 1.49 million inhabitants, Upper Austria is the fourth-largest Austrian state by land area and the third-largest by population. History Origins For a long period of the Middle Ages, much of what would become Upper Austria constituted Traungau, a region of the Duchy of Bavaria. In the mid-13th century, it became known as the Principality above the Enns River ('), this name being first recorded in 1264. (At the time, the term "Upper Austria" also included Tyrol and various scattered Habsburg possessions in South Germany.) Early modern era In 1490, the area was given a measure of independence within the Holy Roman Empire, with the status of a principality. By 1550, there was a Protestant majority. In 1564, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waldviertel
The (Forest Quarter; Central Bavarian: ) is the northwestern region of the northeast Austrian state of Lower Austria. It is bounded to the south by the Danube, to the southwest by Upper Austria, to the northwest and the north by the Czech Republic and to the east by the Manhartsberg (), which is the survey point dividing from . Geologically it is a part of the Bohemian Massif. In the south are the Wachau and Kamptal wine regions. Districts The following administrative districts of Lower Austria are considered to be parts of the * * * * * * northern part of * statutory city of Krems an der Donau Further reading * Birgit Zotz Birgit Zotz (born 7 August 1979) is an Austrian writer, cultural anthropologist and an expert on the subject of hospitality management studies. Life Born in Waidhofen an der Thaya, Lower Austria, Zotz grew up in the Waldviertel and in Vienn ..., ''Das Waldviertel - Zwischen Mystik und Klarheit. Das Image einer Region als Reiseziel.'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mühlviertel
The Mühlviertel () is an Austrian region belonging to the state of Upper Austria: it is one of four "quarters" of Upper Austria, the others being Hausruckviertel, Traunviertel, and Innviertel. It is named after the three rivers ', ', and '. Region The Mühlviertel consists of the four Upper Austrian districts that lie north of the river Danube: Rohrbach, Urfahr-Umgebung, Freistadt and Perg. The parts of the state capital Linz that lie north of the Danube also belong to the Mühlviertel. Geologically it is a part of the Bohemian Massif. Major towns include Rohrbach, Bad Leonfelden, Freistadt and Perg. History The region was the site of a notorious war crime at the end of World War II, when hundreds of starving Soviet POWs escaped from nearby Mauthausen concentration camp and were pursued and murdered around Mühlviertel; the SS referred to the event as the Mühlviertler Hasenjagd ("Mühlviertel rabbit hunt"). During the Allied occupation of Austria The Allied occu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New England
New England is a region comprising six states in the Northeastern United States: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. It is bordered by the state of New York (state), New York to the west and by the Canadian provinces of New Brunswick to the northeast and Quebec to the north. The Atlantic Ocean is to the east and southeast, and Long Island Sound is to the southwest. Boston is New England's largest city, as well as the capital of Massachusetts. Greater Boston is the largest metropolitan area, with nearly a third of New England's population; this area includes Worcester, Massachusetts (the second-largest city in New England), Manchester, New Hampshire (the largest city in New Hampshire), and Providence, Rhode Island (the capital of and largest city in Rhode Island). In 1620, the Pilgrims (Plymouth Colony), Pilgrims, Puritan Separatists from England, established Plymouth Colony, the second successful English settlement in America, following ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holarctic
The Holarctic realm is a biogeographic realm that comprises the majority of habitats found throughout the continents in the Northern Hemisphere. It corresponds to the floristic Boreal Kingdom. It includes both the Nearctic zoogeographical region (which covers most of North America), and Alfred Wallace's Palearctic zoogeographical region (which covers North Africa, and all of Eurasia except for Southeast Asia, the Indian subcontinent, the southern Arabian Peninsula). These regions are further subdivided into a variety of ecoregions. Many ecosystems and the animal and plant communities that depend on them extend across a number of continents and cover large portions of the Holarctic realm. This continuity is the result of those regions’ shared glacial history. Major ecosystems Within the Holarctic realm, there are a variety of ecosystems. The type of ecosystem found in a given area depends on its latitude and the local geography. In the far north, a band of Arctic t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Group Of Margaritifera Margaritifera
A group is a number of persons or things that are located, gathered, or classed together. Groups of people * Cultural group, a group whose members share the same cultural identity * Ethnic group, a group whose members share the same ethnic identity * Religious group (other), a group whose members share the same religious identity * Social group, a group whose members share the same social identity * Tribal group, a group whose members share the same tribal identity * Organization, an entity that has a collective goal and is linked to an external environment * Peer group, an entity of three or more people with similar age, ability, experience, and interest Social science * In-group and out-group * Primary, secondary, and reference groups * Social group * Collectives Science and technology Mathematics * Group (mathematics), a set together with a binary operation satisfying certain algebraic conditions Chemistry * Functional group, a group of atoms which provide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dúchas
Dúchas, sometimes Dúchas: The Heritage Service, was an executive agency of the Department of Arts, Heritage, Gaeltacht and the Islands of the Government of Ireland responsible for Heritage management, including: * natural heritage (including responsibility for the management of national parks and wildlife) * built heritage (including national monuments and historic properties). The agency was established under the Heritage Act 1995 and abolished in 2003 after coming under criticism for restricting development. Its status as an executive agency gave it no separate legal existence and it could be easily abolished without primary legislation, although the abolition was not without controversy. Natural heritage has since been protected by the National Parks and Wildlife Service (initially under the Department of the Environment, Heritage and Local Government). Some other functions, such as the protection of historic monuments, reverted to being part of the Office of Public Wor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eesti Päevaleht
''Eesti Päevaleht'' ''("Estonia Daily")'' is a major daily Estonian newspaper, from the same publishers as the weekly ''Eesti Ekspress''. It has a daily circulation of around 36,000. History and profile ''Eesti Päevaleht'' was founded on 5 June 1995, when the newspapers '' Hommikuleht'', ''Päevaleht'' (previously '' Noorte Hääl'') and ''Rahva Hääl'' were merged into a single publication. On 29 September 1995, ''Eesti Päevaleht'' merged with ''Eesti Sõnumid''. In May 2011 the newspaper joined the Eesti Ajalehed group. Another newspaper under the same name is published weekly in Stockholm, Sweden Sweden, formally the Kingdom of Sweden,The United Nations Group of Experts on Geographical Names states that the country's formal name is the Kingdom of SwedenUNGEGN World Geographical Names, Sweden./ref> is a Nordic countries, Nordic c .... References External links * 1995 establishments in Estonia Estonian-language newspapers Mass media in Tallinn Newspa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
