نتایج جستجو برای: caspian basin
تعداد نتایج: 60255 فیلتر نتایج به سال:
Evidence of at least ten different tectonic- controlled sedimentary basins can be recognized in the central part of the Alborz Mountains in the Middle part of the Alpine-Himalayan belt. They formed from Neoprotrozoic to recent time as the results of the relative plate motion in southwest of Asia in Tethyan realm. The basins include: (1) Prototethys Late Neo-Proterozoic to Early Ordovician epi-c...
the caspian sea contains great resources of oil and gas. the caspian sea is a 700- mile- long body of water in central asia, land located between azerbaijan, iran, kazakhstan, russia and turkmenistan. iran was challenges and opportunities in the caspian region. key question in this thesis includes three section that first question, opportunities of iran in the caspian region, second question ch...
although the southern caspian sea basin (scsb) fish fauna has been studied for more than 200 years, new species continue to be discovered, reported and renamed. here we take the opportunity to provide a new and updated checklist of the fishes of the southern caspian sea basin. the list is based on historical literature records and taxon occurrence data obtained from natural history collections ...
The Global climate reorganisation in the late Pliocene linked to enhancement of Atlantic Ocean Thermohaline Circulation (AOTC), instigated a transition glacial-interglacial cyclicity Quaternary. Enhancement AOTC amplified atmospheric precipitation over Eurasian interior strengthening Northern Hemisphere Glaciation. Increased rainfall on vast Russian Plain drained into endorheic Caspian Sea, whi...
length-weight relationship and condition factor were estimated in seven fish species, including barbus cyri, capoeta gracilis, alburnoides eichwaldii, pseudorasbora parva, ponticola cyrius, cobitis keyvani and acanthalburnus microlepis from shahrbijar river, guilan province, iran. a total of 416 specimens ranging from 18 to 135 mm in total length and from 0.06 to 19.25 g in total weight were co...
During the past two decades, the round goby Apollonia melanostoma (=Neogobius melanostomus) has expanded its range via shipping transport and canals, extending north and west from the Ponto-Caspian region of Eurasia and to the North American Great Lakes. Exotic populations of the round goby have been very successful in the Baltic Sea and the Great Lakes regions, exerting significant ecological ...
the silversides or sand smelts are found in coastal areas of temperate to tropical seas and in fresh water. there are about 14 genera and 68 species with only one native species in the caspian sea basin, atherina caspia . in this review, the systematics, morphology, distribution, biology, economic importance and conservation of the caspian silverside of iran are described, the species is illust...
traditionally, capoeta populations from the southern caspian sea basin have been considered as capoeta capoeta gracilis. study on the phylogenetic relationship of capoeta species using mitochondrial cytochrome b gene sequences show that capoeta population from the southern caspian sea basin is distinct species and receive well support (posterior probability of 100%). based on the tree topologie...
cobitis keyvani is recently described from the sourhern caspian sea basin. limited information is available about morphological features of c. keyvani , therefore this study was conducted to provide osteological characteristics and cranial myology of this species. for this purpose, nine specimens of c. keyvani were collected from the talar river. the specimens were cleared and stained with aliz...
Because of environmental sensitivity of the Caspian Sea, any subsea oil spills and blowouts can inflict destructive impacts on marine environment and cause catastrophic damage in the area. Employing mathematical simulation is one of the easiest and most effective prediction tools for understanding the oil spill behavior under various environmental forces. In this regard, Mike3D simulation packa...
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