نتایج جستجو برای: SOUTHERN CASPIAN SEA

تعداد نتایج: 244020  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1389

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...

Journal: :Applied and environmental microbiology 2016
Maliheh Mehrshad Mohammad Ali Amoozegar Rohit Ghai Seyed Abolhassan Shahzadeh Fazeli Francisco Rodriguez-Valera

We present here the findings from a study of the microbiome of the southern basin of the Caspian Sea, the largest water body on Earth disconnected from any ocean and a brackish inland sea. By high-throughput metagenomics, we were able to reconstruct the genomes of representative microbes. The gross community structure (at the phylum level) was different from the structure of typical marine and ...

Journal: :international journal of aquatic biology 0
bahram falahatkar fisheries department, faculty of natural resources, university of guilan, iran. ali safarpour amlashi departments of fisheries, faculty of marine science, tarbiat modares university, noor, iran. soheil eagderi department of fisheries, faculty of natural resources, university of tehran, iran. hamed mousavi-sabet department of fisheries sciences, faculty of natural resources, university of guilan, someh sara, guilan, iran.

alburnus chalcoides , caspian shemaya, is found in the river systems of the aral, black and caspian sea basins and is an economically valuable cyprinid from the southern caspian sea. this species has been reported as near threatened species in this basin due to damming, over and illegal fishing, destruction of its spawning grounds and water pollution. the caspian shemaya is an important species...

Journal: :علوم و تکنولوژی محیط زیست 0

in this study, the diversity and distribution of economical bony fishes in less-than-ten-meter depths, cpue and population features such as total length, weight and age were investigated in the southern part of the caspian sea in 1385-6. sampling was done in five regions: amir abad, larim, izdeh, kheyroud, and nashtarood with gilnet in mesh sizes of 26, 33, 40, 60, 100, and 150 mm. in total, 22...

2016
Igor P. Medvedev Alexander B. Rabinovich Evgueni A. Kulikov

Tides are the main type of sea level variability in the world oceans. However, oceanic tides penetrate weakly, or do not penetrate at all, into enclosed basins such as the Baltic, Black, and Caspian seas. Consequently, only directly forced tides are formed in these basins. Long observation time series (up to 123 years in the Baltic Sea and 38 years in the Black and Caspian seas) at numerous sta...

2017
Omid Beyraghdar Kashkooli Joachim Gröger Ismael Núñez-Riboni

The worldwide occurrence of complex climate-induced ecological shifts in marine systems is one of the major challenges in sustainable bio-resources management. The occurrence of ecological environment-driven shifts was studied in the Southern Caspian Sea using the "shiftogram" method on available fisheries-related (i.e. commercially important bentho-pelagic fish stocks) ecological and climatic ...

2016
M Rahanandeh S Alinezhad M Khadivinia Moghadam

Caspian sea is a land–locked brackish water lake where zoologically characterized by various aquatic animals aquatic animals and different commercially important fish species Shariati [15]. The fishes in the Caspian Sea and its watershed areas include 78 species, and 49 subspecies which belong to 16 fish family. The bulk of Caspian Sea fishes are anadromos and the major commercially important f...

Journal: :international journal of aquatic biology 0
mahin sheikh fisheries department, university of gonbad kavous, gonbad kavous, iran. rahman patimar department of fishery, faculty of natural resource, university of gonbad kavous, gonbad kavous, iran. kiavash golzarianpour department of biology, faculty of sciences, university of gonbad kavous, gonbad kavous, iran.

cobitis sp. is an endemic spined loach species from the dough river in the southern caspian sea basin, (golestan province, iran). to provide some reproductive features of this fish, sampling was performed at monthly intervals throughout the year and 417 individuals were collected. the specimens ranged in total length from 27.1 to 92.9 mm and total weight from 0.11 to 6.79 g. the spawning of spi...

Journal: :پژوهش های جغرافیای طبیعی 0
فرامرز خوش اخلاق استادیار دانشکده جغرافیا دانشگاه تهران نوذر قنبری استادیار گروه جغرافیا، دانشگاه آزاد اسلامی واحد کرمانشاه جعفر معصوم پور سماکوش دانشجوی دوره دکتری دانشکده جغرافیا دانشگاه تهران

the southern shores of caspian sea is subjected to several atmospheric factors due to its geographical position. north atlantic oscillation(nao) one of the effective phenomenon's affects the most part of hemisphere included caspian sea. in this research negative and positive phases of nao considered with variability of temperature and precipitation of southern shores of caspian sea in a 30...

Journal: :فیزیک زمین و فضا 0
عباس مفیدی آذر زرّین غلامرضا جانباز قبادی

in order to determine the synoptic pattern of heavy and extreme precipitations on the southern coast of the caspian sea, precipitation characteristics of the caspian region were investigated by the use of eight synoptic stations data. considering the percentage thresholds, the days with heavy and extreme precipitations were determined for a 10 year period (1994-2003). since more than 75% of day...

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