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Ulmus Laevis Var. Parvifolia
''Ulmus laevis'' var. ''parvifolia'' is a mutant variety of Ulmus laevis, European white elm found exclusively on the island of Ada Ciganlija, in the Sava at Belgrade, Serbia.Jovanović, B. & Radulović, S. (1980). O jednom novom varyetetu veza. (About a new variety of the European white elm (Ulmus laevis Pall. var. Parvifolia var. n.) Abstract in English.) ''Glasn. Prir. Muz. Beogradu'', B. no. 35. 29-38 (1980). Museum of Natural History (Belgrade), Serbia. Description The tree is small and has a dense crown. The leaves are much smaller than those of the species, 21 – 59 mm (average 40 mm) in length by 14 – 36 mm (average 26 mm) width, and chartreuse (color), chartreuse in colour. The specimen of var. ''parvifolia'' on Ada Ciganlija is very slow-growing, attaining a height of only 5.5 m in almost 60 years, with a diameter at breast height, d.b.h. of just 13 cm. Pests and diseases Not known, but the species has a field resistance to Dutch elm dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulmus Laevis
''Ulmus laevis'' Pall., variously known as the European white elm, fluttering elm, spreading elm, stately elm and, in the United States, the Russian elm, is a large deciduous tree native to Europe, from France northeast to southern Finland, east beyond the Urals into Kyrgyzstan and Kazakhstan, and southeast to Bulgaria and the Crimea; there are also disjunct populations in the Caucasus and Spain, the latter now considered a relict population rather than an introduction by man, and possibly the origin of the European population.Fuentes-Utrilla, P., Squirrell, J., Hollingsworth, P. M. & Gil, L. (2006). ''Ulmus laevis (Pallas) in the Iberian Peninsula. An introduced or relict tree species? New data from cpDNA analysis.'' Genetics Society, Ecological Genetics Group conference, University of Wales Aberystwyth 2006. ''U. laevis'' is rare in the UK, although its random distribution, together with the absence of any record of its introduction, has led at least one British authority to consi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ada Ciganlija
Ada Ciganlija ( sr-cyr, Ада Циганлија, ), colloquially shortened to Ada, is a river island that has artificially been turned into a peninsula, located in the Sava River's course through central Belgrade, Serbia. The name can also refer to the adjoining artificial Lake Sava and its beach. To take advantage of its central location, over the past few decades, it was turned into an immensely popular recreational zone, most notable for its beaches and sports facilities, which, during summer seasons, can have over 100,000 visitors daily and up to 300,000 visitors over the weekend. Owing to this popularity, Ada Ciganlija has been commonly nicknamed "More Beograda" ("Belgrade's Sea"), which was officially accepted as an advertising slogan in 2008, stylised as ''More BeogrADA''. Location Ada Ciganlija is located on the southern bank of the Sava River, 4 km away from its mouth, and entirely belongs to Belgrade's municipality of Čukarica. Its eastern tip roughly borde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sava
The Sava (; , ; sr-cyr, Сава, hu, Száva) is a river in Central and Southeast Europe, a right-bank and the longest tributary of the Danube. It flows through Slovenia, Croatia and along its border with Bosnia and Herzegovina, and finally through Serbia, feeding into the Danube in its capital, Belgrade. The Sava forms the main northern limit of the Balkan Peninsula, and the southern edge of the Pannonian Plain. The Sava is long, including the Sava Dolinka headwater rising in Zelenci, Slovenia. It is the largest tributary of the Danube by volume of water, and second-largest after the Tisza in terms of catchment area () and length. It drains a significant portion of the Dinaric Alps region, through the major tributaries of Drina, Bosna, Kupa, Una, Vrbas, Lonja, Kolubara, Bosut and Krka. The Sava is one of the longest rivers in Europe and among the longest tributaries of another river. The population in the Sava River basin is estimated at 8,176,000, and is shared by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belgrade
Belgrade ( , ;, ; Names of European cities in different languages: B, names in other languages) is the Capital city, capital and List of cities in Serbia, largest city in Serbia. It is located at the confluence of the Sava and Danube rivers and the crossroads of the Pannonian Basin, Pannonian Plain and the Balkan Peninsula. Nearly 1,166,763 million people live within the administrative limits of the City of Belgrade. It is the third largest of all List of cities and towns on Danube river, cities on the Danube river. Belgrade is one of the List of oldest continuously inhabited cities, oldest continuously inhabited cities in Europe and the world. One of the most important prehistoric cultures of Europe, the Vinča culture, evolved within the Belgrade area in the 6th millennium BC. In antiquity, Thracians, Thraco-Dacians inhabited the region and, after 279 BC, Celts settled the city, naming it ''Singidunum, Singidūn''. It was Roman Serbia, conquered by the Romans under the reign ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Museum Of Natural History (Belgrade)
Natural History Museum ( sr, Природњачки музеј / Prirodnjački muzej) is a museum located in Belgrade, Serbia. It is one of the oldest specialized national institutions in Serbia. In fact, it is the only museum of this type in Serbia. By the richness and diversity of the exhibited species, as well as the results achieved in the domain of museology and science, this museum is one of the most important in the South-Eastern Europe. It was officially founded in 1895, registered as The Natural History Museum of Serbian Land at that time (Јестаственички музеј српске земље). History Prior to the foundation of the Museum, in the first half of the 19th century, in the former Principality of Serbia, there was a large number of natural history collections, predominantly kept in the Natural History Cabinet of the Great Lyceum (Great School). The museum was initially located at an Endowment house of Stevče Mihajlovic on the Vracar (central munic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chartreuse (color)
Chartreuse (, , ), also known as yellow-green, is a color between yellow and green. It was named because of its resemblance to the green color of a French liqueur called '' green chartreuse'', introduced in 1764. Similarly, ''chartreuse yellow'' is a yellow color mixed with a small amount of green; it was named because of its resemblance to the color of another French liqueur called '' yellow chartreuse'', introduced in 1838. Shades of chartreuse History and etymology The French word ''chartreuse'' means "charterhouse". The monasteries of the monks of the Carthusian order, of which the first one was established in 1082 by Saint Bruno, are called charter houses because they were chartered—and given generous material support—by the Duke of Burgundy, known as Philip the Bold, when he took over the area in 1378. Philip the Bold's elaborately decorated tomb was initially installed at a Carthusian charterhouse when he died in 1404. These monks started producing Chartreuse lique ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diameter At Breast Height
Diameter at breast height, or DBH, is a standard method of expressing the diameter of the trunk or bole of a standing tree. DBH is one of the most common dendrometric measurements. Tree trunks are measured at the height of an adult's breast, which is defined differently in different countries and situations. In many countries, DBH is measured at approximately above ground. Global variation and scientific precision The height can make a substantial difference to the measured diameter. In the United States, DBH is typically measured at above ground. In some countries, such as Australia, New Zealand, Burma, India, Malaysia, and South Africa, breast height diameter has historically been measured at a height of , but because of much active research into allometrics that are being applied to trees and forests, the convention of is more appropriate. Ornamental trees are usually measured at 1.5 metres above ground. Some authors have argued that the term DBH should be aboli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dutch Elm Disease
Dutch elm disease (DED) is caused by a member of the sac fungi (Ascomycota) affecting elm trees, and is spread by elm bark beetles. Although believed to be originally native to Asia, the disease was accidentally introduced into Americas, America, Europe, and New Zealand. In these regions it has devastated native populations of elms that did not have resistance to the disease. The name "Dutch elm disease" refers to its identification in 1921 and later in the Netherlands by Dutch phytopathologists Marie Beatrice Schol-Schwarz, Bea Schwarz and Christine Buisman, who both worked with professor Johanna Westerdijk. The disease affects species in the genera ''Ulmus'' and ''Zelkova''; therefore it is not specific to the Ulmus × hollandica, Dutch elm hybrid. Overview Dutch elm disease (DED) is caused by ascomycete microfungi. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triterpene
Triterpenes are a class of chemical compounds composed of three terpene units with the molecular formula C30H48; they may also be thought of as consisting of six isoprene units. Animals, plants and fungi all produce triterpenes, including squalene, the precursor to all steroids. Structures Triterpenes exist in a great variety of structures. Nearly 200 different skeletons have been identified. These skeletons may be broadly divided according to the number of rings present. In general pentacyclic structures (5 rings) tend to dominate. Squalene is biosynthesized through the head-to-head condensation of two farnesyl pyrophosphate units. This coupling converts a pair of C15 components into a C30 product. Squalene serves as precursor for the formation of many triterpenoids, including bacterial hopanoids and eukaryotic sterols. Triterpenoids By definition triterpenoids are triterpenes that possess heteroatoms, usually oxygen. The terms ''triterpene'' and ''triterpenoid'' oft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alnulin
Taraxasterol (anthesterin) is a triterpene derived from the mevalonate pathway and is found in dandelions. Biosynthesis The precursor for the biosynthesis of taraxasterol is squalene. In the first step of this formation squalene is cyclized with molecular oxygen, FAD, and NADPH Nicotinamide adenine dinucleotide phosphate, abbreviated NADP or, in older notation, TPN (triphosphopyridine nucleotide), is a cofactor used in anabolic reactions, such as the Calvin cycle and lipid and nucleic acid syntheses, which require NAD ... via the enzyme squalene epoxidase a flavoprotein to yield (2''S'')-2,3-oxidosqualene. In the second step if the oxidosqualene is folded in the chair conformation in the enzyme a cascade of cyclizations will occur that results in the formation of the dammarenyl cation. The dammarenyl cation is then subjected to an alkyl shift to create a six-membered ring and relieving ring strain to form the baccharenyl cation. This allows the baccharenyl double ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scolytus
''Scolytus'' is a genus of bark beetles (subfamily Scolytinae). It includes several species notorious for destroying trees in the forests. The Dutch elm disease is spread in North America by two species : the native elm bark beetle, ''Hylurgopinus rufipes'', and the European elm bark beetle, ''Scolytus multistriatus''. In Europe, while the aforementioned ''Scolytus multistriatus'' again acts as vector for infection, it is much less effective than the large elm bark beetle ''Scolytus scolytus''. Species Species include: *''Scolytus amygdali'' Guerin, 1847, the almond bark beetle *''Scolytus dentatus'' Bright, 1964 *''Scolytus fagi'' Walsh, 1867 *''Scolytus jacobsoni'' Spessivtzev, 1919 *''Scolytus laricis'' Blackman, 1934, the larch engraver *'' Scolytus mali'' ( Bechstein, 1805), the larger shothole borer *''Scolytus monticolae'' Swaine, 1917 *''Scolytus multistriatus'' (Marsham, 1802), the European elm bark beetle, smaller European elm bark beetle *''Scolytus muticus'' Say ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elm Species And Varieties
Elms are deciduous and semi-deciduous trees comprising the flowering plant genus ''Ulmus'' in the plant family Ulmaceae. They are distributed over most of the Northern Hemisphere, inhabiting the temperate and tropical- montane regions of North America and Eurasia, presently ranging southward in the Middle East to Lebanon and Israel,Flora of Israel OnlineUlmus minor Mill. , Flora of Israel Online accessdate: July 28, 2020 and across the Equator in the Far East into Indonesia.Fu, L., Xin, Y. & Whittemore, A. (2002). Ulmaceae, in Wu, Z. & Raven, P. (eds) Flora of China'', Vol. 5 (Ulmaceae through Basellaceae). Science Press, Beijing, and Missouri Botanical Garden Press, St. Louis, US. Elms are components of many kinds of natural forests. Moreover, during the 19th and early 20th centuries, many species and cultivars were also planted as ornamental street, garden, and park trees in Europe, North America, and parts of the Southern Hemisphere, notably Australasia. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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