نتایج جستجو برای: caspian marine shad

تعداد نتایج: 96906  

Journal: :Natural resources conservation and research 2023

The trends in the development of hydrocarbons Caspian shelf water area Russian Federation by domestic and foreign companies are analyzed. In accordance with these trends, national-political priorities for formation an oil gas chemical cluster national subjects zone Pre-Caspian substantiated.

Journal: :International journal of environment and geoinformatics 2022

Mucilage, which has surrounded the Marmara Sea and Turkish Straits in particular for last few months, is a gel-like slippery mass of microorganisms that are mostly clumped together cover large areas, consisting proteins, carbohydrates, fatty acids released out body by single-celled organisms under stressful environmental conditions. Although sea area waterway connecting Caspian Mediterranean Se...

2009
Stefan Nehring

The Ponto-Caspian amphipod Obesogammarus obesus (Sars, 1894) was first recorded in the Rhine River near Koblenz, Germany in October 2004. Additional records of small numbers of O. obesus from the same location in 2005 and 2006 indicate that this alien species may have become established in the central section of the Rhine River. Ship transport via the Main-Danube Canal, connecting the Danube ba...

2012
M. Seifali A. Arshad H. R. Esmaeili B. H. Kiabi F. Yazdani Moghaddam N. Fardad

A total of 48 female spirlins Alburnoides sp. from the Kesselian stream (South Caspian Sea basin, northern Iran) were examined during a period from July 2008 to June 2009 to obtain data on fecundity, and to determine the spawning season of this carp. The mean absolute fecundity of females spirlin was 1722.92 (653.88) eggs. The fecundity has positive correlation with the size of the female. The...

Abbas Esmaili- Sari , Amir Mohammad Kazemifar, Jaber Aazami , Nader Bahramifar , Seyed Mahmoud Ghasempouri,

Background: Contagion of aquatic ecosystems to heavy metals especially mercury (Hg) has risen concerns about healthiness of marine organisms. Organic mercury compounds are highly toxic for animals, and its detection in various samples is frequently needed. In present study we have described a new method for measurement of organic mercury and total mercury concentration in great cormorants (ph...

Three marine bacteria, Pseudomonas putida PTCC 1664, Bacillus cereus  PTTC 1665 and Pseudomonas pseudoalkaligenes PTCC 1666 isolated from the East Anzali wetland sediments of the Caspian Sea, were resistant to heavy metals of Cadmium (Cd), Nickel (Ni) and Vanadium (V). Pseudomonas pseudoalkaligenes PTCC 1666 was found to be resistant to all 3 metals Ni, Cd, V. Heavy metal uptake was determined ...

Abstract Sound generating human activities so-called “anthropogenic sound” have increased ambient sound levels considerably in aquatic habitats that are markedly diverse in time and space. Sound generating human activities is now recognized as a potential driver of environmental changes in marine habitats. Iran has 750 km coastline along the Caspian Sea located in the north and around 2250 km ...

Journal: :Frontiers in sustainability 2021

Kuwait's “Blue Economy” project aims to help replace the country's oil and gas income by sustainable development of its marine resources. The fishing industry has a prime place in project, but nine main fish species Kuwait have recently declined Rubian (Shrimp), Zobaidi (Silver Pomfret), Suboor (Hilsa Shad), Naqroor (Javelin Grunter), Hamoor (Orange-Spotted Grouper), Hamra (Malabar Blood Snappe...

2009
Mohammad Reza

A solid-phase extraction (SPE) method for sample clean-up and preconcentration followed by reversed-phase high-performance liquid chromatography (RP-HPLC) with uv detection is reported for determination of polycyclic aromatic hydrocarbons (PAHs) in the caspian seawater. A good resolution was obtained using acetonitrile:water (40:60) as mobile-phase for separation of these compounds. The effect ...

Background and Objectives: Combination therapy has been considered as a potential approach to overcome antimicrobial resistance. In this study the antimicrobial effects of active compounds produced by some marine Streptomyces spp. in combination with some standard antibiotics against multidrug-resistant pathogens was investigated. Materials and Methods: In this laboratory study, the bacteria i...

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