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Head: Ovechko Sergey Victorovich. Biological characteristics of ecotone areas of water objects in lower reaches of Dnieper. (popup.stage: ). Kherson hydrobiology station NAS Ukrain. № 0218U003650

Head: Ovechko Sergey Victorovich. Biological characteristics of ecotone areas of water objects in lower reaches of Dnieper. (popup.stage: ). Kherson hydrobiology station NAS Ukrain. № 0218U003649

Head: Ovechko Sergey Victorovich. Biological characteristics of ecotone areas of water objects in lower reaches of Dnieper. (popup.stage: ). Kherson hydrobiology station NAS Ukrain. № 0218U003648

Head: Ovechko Sergey Victorovich. Biological characteristics of ecotone areas of water objects in lower reaches of Dnieper. (popup.stage: ). Kherson hydrobiology station NAS Ukrain. № 0218U003647

Head: Ovechko Sergey Victorovich. Biological characteristics of ecotone areas of water objects in lower reaches of Dnieper. (popup.stage: ). Kherson hydrobiology station NAS Ukrain. № 0218U003646

Head: Ovechko Sergey Victorovich. Hydrobiological characteristic, determination of the species composition of the number and biomass of hydrobionts of water objects. (popup.stage: ). Kherson hydrobiology station NAS Ukrain. № 0218U003645

Head: Ovechko Sergey Victorovich. 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". (popup.stage: ). Kherson hydrobiology station NAS Ukrain. № 0218U003644

Head: Ovechko Sergey Victorovich. 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. (popup.stage: ). Kherson hydrobiology station NAS Ukrain. № 0218U003643

Head: Ovechko Sergey Victorovich. Preliminary analysis of the effectiveness of the activities of biological reclamation canal Dnieper-Donets for the period 2011-2016. (popup.stage: ). Kherson hydrobiology station NAS Ukrain. № 0217U006459

Head: Ovechko Sergey Victorovich. Investigation of the effect of liquid organic fertilizer "Valfish" on hydrobiological characteristics of food organisms in the pond aquaculture southern Ukraine. (popup.stage: ). Kherson hydrobiology station NAS Ukrain. № 0217U006458