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Head: Ovechko Serhii Viktorovych. Structural and functional organization and biological productivity of aquatic ecosystems Dnieper-Bug estuary area. (popup.stage: ). Kherson hydrobiology station NAS Ukrain. № 0221U103855

Head: Ovechko Serhii Viktorovych. Assessment of the status of aquatic ecosystems, hydrobiological and ichthyological characteristics of the Southern Bug River in the Impact Zone of the Migievska Hydroelectric Station. (popup.stage: ). Kherson hydrobiology station NAS Ukrain. № 0218U005341

Head: Ovechko Serhii Viktorovych. Assessment of the status of aquatic ecosystems, hydrobiological and ichthyological characteristics of the Southern Bug River in the Impact Zone of the Migievska Hydroelectric Station. Kherson hydrobiology station NAS Ukrain. № 0118U100027

Head: Ovechko Serhii Viktorovych. Hydrobiological characteristic, determination of the species composition of the number and biomass of hydrobionts of water objects. Kherson hydrobiology station NAS Ukrain. № 0117U003567

Head: Ovechko Serhii Viktorovych. Hydrobiological and ichthyological characteristics, assessment of the state and prognosis of possible changes in water ecosystems in the Southern Bug River in the influence zone of the Migiyska hydroelectric power station. Kherson hydrobiology station NAS Ukrain. № 0117U003566

Head: Ovechko Serhii Viktorovych. Investigation of the effect of liquid organic fertilizer "Riverm" on the hydrobiological characteristics of food organisms in the ponds of the "Novokakhovsky fish farm" and "Kherson Production and Experimental Plant for fish breeding". Kherson hydrobiology station NAS Ukrain. № 0117U003565

Head: Ovechko Serhii Viktorovych. Preliminary analysis of the effectiveness of the activities of biological reclamation canal Dnieper-Donets for the period 2011-2016. Kherson hydrobiology station NAS Ukrain. № 0116U007995

Head: Ovechko Serhii Viktorovych. Investigation of the effect of liquid organic fertilizer "Valfish" on hydrobiological characteristics of food organisms in the pond aquaculture southern Ukraine. Kherson hydrobiology station NAS Ukrain. № 0116U005323

Head: Ovechko Serhii Viktorovych. Rationale of biotechnological bank protection of Kardashynka quarry. Kherson hydrobiology station NAS Ukrain. № 0116U005322

Head: Ovechko Serhii Viktorovych. Development of methods for biological reclamation of Zaharivsky ponds by means of fish-melioratories. Kherson hydrobiology station NAS Ukrain. № 0116U005321