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Islamia Graeca
''Islamia graeca'' is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusc or micromollusc in the family Hydrobiidae. Geographic distribution ''I. graeca'' is endemic to Greece, where it is restricted to Lake Amvrakia, a small, deep, oligotrophic lake in the south Adriatic-Ionian region of the country. Conservation status This species is classified by the IUCN as critically endangered and possibly extinct. Recent surveys have failed to find any specimens and the sublittoral zone The neritic zone (or sublittoral zone) is the relatively shallow part of the ocean above the drop-off of the continental shelf, approximately in depth. From the point of view of marine biology it forms a relatively stable and well-illuminated ..., which was the species original habitat, is almost completely terrestrial nowadays, as a result of over-extraction of water from Lake Amvrakia; however, there remains a possibility that the species may s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can reproduction, produce Fertility, fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greece
Greece,, or , romanized: ', officially the Hellenic Republic, is a country in Southeast Europe. It is situated on the southern tip of the Balkans, and is located at the crossroads of Europe, Asia, and Africa. Greece shares land borders with Albania to the northwest, North Macedonia and Bulgaria to the north, and Turkey to the northeast. The Aegean Sea lies to the east of the mainland, the Ionian Sea to the west, and the Sea of Crete and the Mediterranean Sea to the south. Greece has the longest coastline on the Mediterranean Basin, featuring thousands of islands. The country consists of nine traditional geographic regions, and has a population of approximately 10.4 million. Athens is the nation's capital and largest city, followed by Thessaloniki and Patras. Greece is considered the cradle of Western civilization, being the birthplace of democracy, Western philosophy, Western literature, historiography, political science, major scientific and mathematical p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molluscs Of Europe
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species. The gastr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Islamia
''Islamia'' is a genus of small freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Hydrobiidae. MolluscaBase eds. (2021). MolluscaBase. Islamia Radoman, 1973. Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=741841 on 2021-03-24 Species Species within the genus ''Islamia'' include: * ''Islamia adelmuellerae'' A. Reischütz, Steiner-Reischütz & P. L. Reischütz, 2018 * † '' Islamia amiatae'' Esu & Girotti, 2015 *''Islamia anatolica'' Radoman, 1973 *'' Islamia archeducis'' Boeters & Beckmann, 2007Boeter H. D. & Beckmann K.-H. (2007). "''Islamia archeducis'' n. sp., ein neuer Kleinprosobranchiervon der Balearen-Insel Mallorca (Gastropoda: Hydrobiidae). pp. 175-177. In: Beckmann K.-H.: ''Die Land- und Süßwassermollusken der Balearischen Inseln''. ConchBooks, Hackenheim, 255 pp., . * † ''Islamia ateni'' (Boeters, 1969) * ''Islamia ayalga'' Ruiz-Cobo, Alonso, Quiñonero-Salgado ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Non-marine Molluscs Of Greece
The non-marine molluscs of Greece are a part of the molluscan fauna of Greece (wildlife of Greece). A number of species of non-marine molluscs are found in the wild in Greece. Freshwater gastropods Neritidae * ''Theodoxus danubialis'' (Pfeiffer, 1828) * '' Theodoxus varius callosus'' (Deshayes, 1832) Viviparidae * '' Viviparus contectus'' (Millet, 1913) * ''Viviparus hellenicus'' (Clessin, 1879) Bythinellidae * '' Bythinella alexpeteri'' Glöer & Hirschfelder, 2020 - endemic to Greece * '' Bythinella amira'' Glöer & Hirschfelder, 2020 - endemic to Greece * '' Bythinella charpentieri'' (Roth, 1855) - endemic to Greece * '' Bythinella corrosa'' Glöer & Hirschfelder, 2020 - endemic to Greece * '' Bythinella dimitrosensis'' Glöer & Reuselaars, 2020 - endemic to Greece * '' Bythinella eleousae'' Glöer & Hirschfelder, 2020 - endemic to Greece * '' Bythinella ellinikae'' Glöer & Hirschfelder, 2020 - endemic to Greece * '' Bythinella jozefgregoi'' Glöer & Reuselaars, 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Hawaii
A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. ''University'' is derived from the Latin phrase ''universitas magistrorum et scholarium'', which roughly means "community of teachers and scholars". Universities typically offer both undergraduate and postgraduate programs. The first universities in Europe were established by Catholic Church monks. The University of Bologna (), Italy, which was founded in 1088, is the first university in the sense of: *being a high degree-awarding institute. *using the word ''universitas'' (which was coined at its foundation). *having independence from the ecclesiastic schools and issuing secular as well as non-secular degrees (with teaching conducted by both clergy and non-clergy): grammar, rhetoric, logic, theology, canon law, notarial law.Hunt Janin: "The university in medieval life, 1179–1499", McFarland, 2008, , p. 55f.de Ridder-Symoens, Hil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sublittoral
The littoral zone or nearshore is the part of a sea, lake, or river that is close to the shore. In coastal ecology, the littoral zone includes the intertidal zone extending from the high water mark (which is rarely inundated), to coastal areas that are permanently submerged — known as the ''foreshore'' — and the terms are often used interchangeably. However, the geographical meaning of ''littoral zone'' extends well beyond the intertidal zone to include all neritic waters within the bounds of continental shelves. Etymology The word ''littoral'' may be used both as a noun and as an adjective. It derives from the Latin noun ''litus, litoris'', meaning "shore". (The doubled ''t'' is a late-medieval innovation, and the word is sometimes seen in the more classical-looking spelling ''litoral''.) Description The term has no single definition. What is regarded as the full extent of the littoral zone, and the way the littoral zone is divided into subregions, varies in different ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through building partnerships. The organization is best known to the wider ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trophic State Index
The Trophic State Index (TSI) is a classification system designed to rate water bodies based on the amount of biological productivity they sustain. Although the term "trophic index" is commonly applied to lakes, any surface water body may be indexed. The TSI of a water body is rated on a scale from zero to one hundred. Under the TSI scale, water bodies may be defined as: * oligotrophic (TSI 0–40, having the least amount of biological productivity, "good" water quality); * mesotrophic (TSI 40–60, having a moderate level of biological productivity, "fair" water quality); or * eutrophic to hypereutrophic (TSI 60–100, having the highest amount of biological productivity, "poor" water quality). The quantities of nitrogen, phosphorus, and other biologically useful nutrients are the primary determinants of a water body's TSI. Nutrients such as nitrogen and phosphorus tend to be limiting resources in standing water bodies, so increased concentrations tend to result in increased ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Amvrakia
Lake Amvrakia or Ambracia ( el, Αμβρακία) is a freshwater lake in Aetolia-Acarnania, in western Greece. It lies between the towns of Agrinio and Amphilochia, and is long, wide and has a maximum depth of . It is a Natura 2000 protected habitat. Origin Lake Amvrakia was a result of tectonic movement. It is karstic and semipolje type. The lake formed from deposits of Mesozoic limestone. Location and Geology Lake Amvrakia lies along a depression northwest of Lake Ozeros and west of Mount Thyamos or Petalas. Its total surface area used to be 13.6 km2, but that area has shrunk drastically in recent years. One of the reasons for this reduction in size was a long drought and the other was the draining of the shallow northern section of the basin, which is currently cut off by an embankment created for the national highway. This drainage had a severe impact on the lake's size, owing to the small size of the basin (112 km2.). Important species Pseudobithynia ambrakis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example ''Cytisus aeolicus'' is an endemite of the Italian flora. ''Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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