نتایج جستجو برای: southern coast of caspian sea
تعداد نتایج: 21199636 فیلتر نتایج به سال:
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...
The Caspian kutum, Rutilus kutum Kamenskii, 1901 from Cyprinidae family is native in the Caspian Sea, with the highest distribution in the southern part and rarely seen in the northern and is an economically important species along the Caspian Sea. Despite this, knowledge about stock structure is scarce and there is no formal management strategy to ensure the long-term sustainability of this va...
Kouraev et al. 2003: Polar Research 22(1), 43–50 A stable and strong ice cover forms during winter months in the Aral Sea and northern part of the Caspian Sea. The presence of ice cover negatively affects navigation and fi shery condi tions and endangers facilities located on the coast as well as on the shelf, such as oil rigs that have recently been installed in the northern Caspian by Russia ...
The Caspian seal (Pusa caspica) has declined by more than 90% since 1900 and is listed as endangered by IUCN. We made the first quantitative assessment of Caspian seal by-catch mortality in fisheries in the north Caspian Sea by conducting semi-structured interviews in fishing communities along the coasts of Russia (Kalmykia, Dagestan), Kazakhstan and Turkmenistan. We recorded a documented minim...
case presentation this article presents a 56-year-old woman from guilan province, the north of iran and the southern coast of the caspian sea, who admitted to the hospital with acute fever, severe headache, thrombocytopenia, anemia, epigastric pain, myalgia, nausea and vomiting. conclusions we recognized that the case was co-infected by cchf and leptospirosis. introduction infectious diseases a...
Remote sensing has changed modern oceanography by proving synoptic periodic data which can be processed. Since the satellite data are usually too much and nonlinear, in most cases, it is difficult to distinguish the patterns from these images. In fact, SOM (Self-Organizing Maps) model is a type of ANN (Artificial Neural Network) that has the ability to distinguish the efficient patterns from th...
among the recently collected chalcidoid wasps in a rice field of eastern guilan province (coast of caspian sea), in july 2012, there was a specimen of pteromalidae belonging to the genus callitula. it was identified as callitula ferrierei (bouček, 1964). both genus and species are new record for iranian fauna. morphological characters and geographical distribution of the newly recorded species ...
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 southern coasts of caspian sea is subjected to synoptic/mesoscale weather systemsranging from locally enhanced sea breeze formation and small local front systems to synoptic scale cyclones.this study presents climatology of cyclones over the southern coasts of caspian sea covering a ten year period1996-2005. altogether 57 cyclones were formed during the ten year period. anoticeable seasonal...
mercury is one of the most toxic heavy metal which can enter the human body mainly through consumption of seafood contaminated with mercury. in this study, the human health risk due to consumption of kutum (rutilus frisii kutum), in the caspian sea, were evaluated by measuring the concentration of mercury in muscle samples using atomic absorbtion spectrophotometer (perkin elmer fias-100) and co...
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