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Information × Registration Number 0221U102328, 0116U002117 , R & D reports Title Mechanisms of interaction and the formation of hydrobiocenoses biodiversity transitional waters of the Lower Danube popup.stage_title Head Liashenko Artem V., Registration Date 01-02-2021 Organization Institute of Hydrobiology of the National Academy of Sciences of Ukraine popup.description2  The main aim: elucidation of formation mechanisms of transitional waters biodiversity based on the study of the interaction of biotic systems in the gradient of different factors. The systematization and description of the main biotopes and groups of transitional waters of the lower Danube have been carried out. The concept of zonal structure of groups (hydrobiocenoses) is confirmed; it is shown that the structure of their different parts (central and marginal) may differ in the magnitude of species richness and products. Marginal areas form a transition zone between different groups and may have higher species richness. It is established that a sharp change or extreme action of abiotic factors contributes to the formation of ecological tension zone, which is characterized by poor species composition and lack of stable biotic groups. It is shown that the phenomenon of marginal effect (increase of species richness) is present in the interaction of groups. Its emergence is facilitated by the formation of permanent habitats in transition zones with specific species that are absent in the contact groups. The concept of biodiversity formation, functioning and interaction of hydrobiocenoses shows that the mechanisms of these processes in the delta are provided by multicomponent unique natural biome, hierarchy of its biotic systems, saturation of different habitats and groups and diversity of transitional zones between them. As a result - the sum of individual effects that occur in the interaction of groups of different types and levels of organization. Product Description popup.authors Dvoretskyi Taras V. Diachenko Tetiana M. Zorina-Sakharova Kateryna Ye Liashenko Artem V. Makovskyi Vadym V Marchenko Iryna S Pogorelova Maryna S. Sanzhak Iurii O Slepniov Olexandr Ye. popup.nrat_date 2021-02-01 Close