نتایج جستجو برای: caspian forests

تعداد نتایج: 42923  

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...

Journal: : 2023

The paper discusses the distribution of Bufo verrucosissimus in North Caucasus. It is noted that absolute majority findings this species Russia have occurred Black Sea basin. All currently known habitats B. Caspian basin are located upper part Kuma River (the vicinity Kislovodsk town and Borgustanskaya village Stavropol region). New points shown between mouths Ugol’naya Kladbishchenskaya Balka ...

Journal: رستنیها 2006
A. GHAHREMAN A.R. NAQINEZHAD, B. HAMZEH’EE F. ATTAR, M. ASSADI,

The Caspian (Hyrcanian) lowland forest zone in northern Iran is characterized by small remnant alder forest communities, dominated or subdominated with an Euxino-Hyrcanian element, Alnus glutinosa ssp. barbata. The first floristic inventory of these alder forests in northern Iran is presented. The floristic catalogue is based on the data of 133 phytosociological releves in eight different alder...

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...

2016
Halimeh Zareian Hamid Reza Esmaeili Adeleh Heidari Majid Reza Khoshkholgh Hamed Mousavi-Sabet

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...

Journal: :Molecular ecology 2006
Gemma E May Gregory W Gelembiuk Vadim E Panov Marina I Orlova Carol Eunmi Lee

The invasion of the zebra mussel, Dreissena polymorpha, into North American waters has resulted in profound ecological disturbances and large monetary losses. This study examined the invasion history and patterns of genetic diversity among endemic and invading populations of zebra mussels using DNA sequences from the mitochondrial cytochrome oxidase I (COI) gene. Patterns of haplotype frequency...

2003
Alexei V. Kouraev Fabrice Papa Petr I. Buharizin Anny Cazenave Jean-Francois Cretaux Julia Dozortseva Frederique Remy

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 ...

Journal: :Environmental pollution 2008
Natsuko Kajiwara Mafumi Watanabe Susan Wilson Tariel Eybatov Igor V Mitrofanov David G Aubrey Lev S Khuraskin Nobuyuki Miyazaki Shinsuke Tanabe

Persistent organic pollutants including organochlorine pesticides, PCBs, and PCDDs/DFs were determined in the blubber of Caspian seals, which died during an outbreak of canine distemper virus in 2000 and 2001. DDTs were the predominant contaminants that ranged from 3.1 to 560 microg/g lipid. A negative correlation was observed between concentration of contaminants and blubber thickness. During ...

Journal: :Molecular ecology resources 2009
Kevin A Feldheim Phillip Willink Joshua E Brown Douglas J Murphy Matthew E Neilson Carol A Stepien

We developed and tested eight polymorphic microsatellite loci for Ponto-Caspian 'neogobiin' gobies, many of which are invasive in Eurasia and North America, whose study will aid understanding of the population genetics underlying their success. We tested samples from one to two locations from 12 taxa in the recently revised genera Babka, Benthophilus, Mesogobius, Neogobius = Apollonia, Ponticol...

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