نتایج جستجو برای: caspian coasts

تعداد نتایج: 7103  

Journal: :Weather and climate dynamics 2021

Abstract. Here we demonstrate that dynamical adjustment allows a straightforward approach to extreme event attribution within conditional framework. We illustrate the potential of with two iconic events occurred in 2010: early winter European cold spell and Russian summer heat wave. use based on constructed atmospheric circulation analogues isolate various contributions these using only observa...

2001
Douglas Blum

This memo addresses the general prospects for Russia's policy in the Caspian Sea, particularly in light of the ongoing financial crisis and domestic political turmoil. After touching on uncertainties regarding the Caspian's significance as a source of hydrocarbon reserves, I will consider Russia's evolving policy preferences and diplomatic relations, environmental issues, and the broader politi...

ژورنال: بوم شناسی آبزیان 2015

 Barnacles are most important macro benthic population of Rocky shores that Amphibalanusimprovisus is a dominant invasive species of this group. Present study aims to define the number, biomass, coverage rate and to study the factors affecting on the distribution of this species in various parts of rocky shores of south Caspian Sea. Ten sampling stations were selected in the natural and artific...

Journal: :تحقیقات جغرافیایی 0
مجید منتظری دانشگاه اصفهان

spatial distribution of thermal regions is dependent on local factors and circulation patterns in long terms. recognition of spatial distribution of temperature in geographical regions could be help on planning and environmental policies. the aim of this paper is recognition and detachment of thermal regions in iran. for this object, maximum daily temperature data have been provided using 620 s...

Journal: :بهره برداری و پرورش آبزیان 0
غضنفر مرادی نسب دانشگاه هرمزگان دانشکده علوم و فنون دریایی سید یوسف پیغمبری دانشگاه علوم کشاورزی و منابع طبیعی گرگان الهام میررسولی مدرس مدعو گروه شیلات دانشگاه پیام نور، گرگان، ایران

the aim of this study was to investigate on obtained caviar quantity status of sturgeon at fishing grounds of the southwestern caspian sea. data of catches by means of fixed gill nets in sturgeon fish fishing grounds and beach seine were used during 5 years survey (2005-2009). a total of 1361 female sturgeon was caught including: 788 acipenser persicus, 410 a. stellatus, 60 a. guldenstaedti, 70...

Journal: :caspian journal of environmental sciences 2014
al et m. gharibkhani

this study was conducted in order to investigate genetic diversity and population structure of pike-perch in the northern part of iran. for this purpose, 207 adult pike-perches from four regions of the caspian sea watershed (talesh coasts, anzali wetland, chaboksar coasts and aras dam) were collected. dna was extracted and by using 15 pairs of microsatellite primers, polymerase chain reaction (...

2013
Hongxiao Yang Jianmin Chu

Coastal vegetation comprises a number of coastal specialists and terrestrial generalists. It remains unclear how they persist on disturbed and undisturbed coastal conditions. We tested the hypothesis that coastal specialists may be superior to terrestrial generalists on supratidal zones of coasts, but their superiority can be influenced by human disturbances. Eight separate sandy coasts of the ...

al et M. Gharibkhani

This study was conducted in order to investigate genetic diversity and population structure of pike-perch in the Northern part of Iran. For this purpose, 207 adult pike-perches from four regions of the Caspian Sea watershed (Talesh Coasts, Anzali Wetland, Chaboksar Coasts and Aras Dam) were collected. DNA was extracted and by using 15 pairs of microsatellite primers, Polymerase Chain Reaction (...

2008
Igor Zonn

The Caspian Sea is the world’s largest inland sea. Physiographically it is unique. It is the most productive body of water in the world1 and the only one that preserves the geno-fund of the sturgeon, the source of almost all the black caviar produced. About 10 million people live around the Caspian Sea and the occupations of many of them are connected with the sea, and first of all with fishing...

2009
M. R. Pishvaei A. Shirvani D. M. Kalim

In this study, the relationship between annual sunspot number (ASN) and annual precipitation totals (APT) has been investigated over the northern coasts of the Persian Gulf and Oman Sea by using two statistical methods: contingency tables and cross-correlation function. Only Bushehr and Jask stations (270 mm and 140 mm mean APT) have long term monthly precipitation records started instrumentall...

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