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There is a widespread perception that the Caspian is in a state of ecological decline, and that one aspect of this is a decline in biodiversity.  This is of particular concern, due to the status of the Caspian as a unique water body inhabited by a large number of endemic species.  There is also a widespread belief that the Caspian is very sensitive to the impacts of industrial activities and in particular to those associated with oil and gas production and transportation.

The Caspian Sea, world largest lake, is bordered by Republic of Azerbaijan, Islamic Republic of Iran, Kazakhstan, Russian Federation and Turkmenistan. Out of 122 fish species and subspecies living in the Caspian Sea, 40 species are believed to be commercial and presently 25 species are the main exploited fish (Ivanov, 2000). At present sturgeons, tulka and Caspian Sea seals are considered as shared commercial stocks between Caspian Sea range states.

Каспийй теңізінде ауланған балықтардың 15 түрін ихтиопатологиялық зерттеу нәтижелері бойынша Anisakidae тұқымдасы жататын Anisakis, Contracaecum,Porrocecum тоғышарларының жаппай таралуы анықталады. 

The fifth report on implementation of the Convention on Biological Diversity in Turkmenistan presents the findings on the current stage and the situation of the biodiversity in Turkmenistan. It underlines the importance of the biodiversity preservation and highlights the main areas for work.

Отчёт подготовлен при поддержке совместного проекта Министерства охраны природы, Программы развития ООН в Туркменистане и Глобального экологического Фонда, «Планирование национального биоразнообразия в поддержку выполнения Конвенции по Биоразнообразию. Стратегический план Туркменистана на 2011-2020 гг.».

The tourist brochure describes interesting species of flora and fauna of the Ural River Delta and the adjacent coastal zone of the Caspian Sea.

Toxicity tests are commonly used as a tool to determine the standards of water quality for chemicals and to discover appropriate organisms as bioindicators in toxicological studies, and also could be used as an essential tool for evaluation of the pollutant effects in aquatic ecosystems. The aim of the present study was to evaluate the sensitivity of two Caspian fish species, Caspian trout as an endangered species and Caspian Kutum using the static acute toxicity in response to nonylphenol, which is widely discharged into the Caspian Sea environment.

In addition, Caspian trout was approximately 6 times more sensitive than Caspian Kutum. Nonylphenol was reflected to be "highly toxic" to Caspian trout and "moderately toxic" to Caspian Kutum. The results could be considered in preparing plans for conservation and restocking management of Caspian Kutum and the endangered Caspian trout. 

This brochure has been produced on behalf of the consortium developing the hydrocarbon deposits beneath the North East Caspian defined under the North Caspian Sea Production Sharing Agreement of 1997.

The concession area lies in a region of rich biodiversity recognized as being of international importance for its wildlife, including several species that are classified as endangered. The widely varying conditions in the North East Caspian include extreme seasonal temperature variations, long-term sea level change, short-term sea surges and retreats, high levels of turbidity and sediment movement, ice cover in winter and scouring of the seabed by moving ice.

This dynamic environment presents challenges for those who live and work in the area. It also means that the fauna and flora on land and at sea, are adapted to a significant level of environmental stress from continually changing physical conditions.