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Present state of the Aral Sea: diverging physical and biological characteristics of the residual basins

Alexander IzhitskiyShirshov Institute of Oceanology Russian Academy of Science, Moscow, Russian FederationPeter ZavialovShirshov Institute of Oceanology Russian Academy of Science, Moscow, Russian FederationPh. V. SapozhnikovShirshov Institute of Oceanology Russian Academy of Science, Moscow, Russian FederationGeorgiy KirillinLeibniz-Institute of Freshwater Ecology and Inland Fisheries, Berlin, GermanyHans‐Peter GrossartInstitute of Biochemistry and Biology, Potsdam University, GermanyOlga KalininaFaculty of Geography, Lomonosov Moscow State University, Moscow, Russian FederationА. К. ЗалотаShirshov Institute of Oceanology Russian Academy of Science, Moscow, Russian FederationIgor GoncharenkoShirshov Institute of Oceanology Russian Academy of Science, Moscow, Russian FederationA. K. KurbaniyazovYasavi International Kazakh-Turkish University, Turkestan, Kazakhstan

2016en

ABI

Annotatsiya

Latest data on the hydrophysical and biological state of the residual basins of the Aral Sea are presented and compared. Direct, quasi-simultaneous observations were carried out in the central part of the Western Large Aral Sea, the northern extremity of the Large Aral known as Chernyshev Bay, Lake Tshchebas, and the Small Aral Sea in October 2014. The Large Aral Sea and Lake Tshchebas transformed into hyperhaline water bodies with highly special taxocene structure. The Small Aral Sea was a relatively diverse brackish ecosystem, which was rather similar to the pre-desiccation environment. The Small Aral Sea and Lake Tshchebas exhibited a fully-mixed vertical structure, whereas the Western Large Aral Sea was strongly stratified. Our data show that during desiccation, different parts of the Aral Sea experienced different environmental conditions, resulting in qualitative and quantitative differences in the physical and biological regimes among the different residual basins.

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DOI: 10.1038/srep23906

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