The Near Bottom Hypoxia and Hydrogen Sulphide Formation on the Black Sea Shelf

  • N. A. Berlinsky Odessa State Ecological University
  • Yu. I. Popov The Branch of state enterprise “Odessa region Statehydrography”
Keywords: anthropogenic eutrophication, , near bottom hypoxia, hydrogen sulphide, upwelling, the Black Sea shelf


Purpose. Estimation of the Northwestern part of the Black Sea Shelf in modern period. Methods. The sample of average daily measurements of the temperature, salinity on the surface, level, wind velocity and direction during 2007, 2012 and 2017 had been done. The analyses of the cruise investigation parameters and NASA satellite photos had been done in this region as well. Results. Increasing of nutrient, heavy metals, oil concentration in the Danube, Dnieper and Dniester of water runoff was fixed during the last 50 years. It was the reason of its permanent accumulation in marine ecosystem. Also it was the reason of anthropogenic eutrophication development in the sea water in spring and at the beginning of summer time. Later, at the end of summer and in autumn the dissolved oxygen is decreasing in the bottom layers because of destruction of organic matter. In the last years, decreasing of nutrient from the rivers input was marked. It provided the increasing the transparency in the sea column and made the water condition more positive. But for assessment of the whole ecosystem state the complexes monitoring is absolutely necessary. In September of 2017 the special investigation cruise was done. The result shown the deficit of the dissolved oxygen – hypoxia in the near bottom layer is spreading in the center

of the shelf ecosystem (the depths are more than 20 m). The oxygen concentrations were less than 2,0 ml/l.. The reason of this negative phenomena was provided by NASA satellite photos of eutrophication process in summer and marking of upwelling at the shallow waters during the warm period in 2007, 2012 and 2017. Conclusions. Anthropogenic eutrophication development in the sea water was fixed as well as the near bottom hypoxia and hydrogen sulphide formation in the Ukrainian part of the Northwestern shelf of the Black sea in the modern period. Spatial scale of this phenomena is comparable with the scales from 70's of last century


Download data is not yet available.

Author Biography

N. A. Berlinsky, Odessa State Ecological University

доктор географічних наук, професор


Zaytsev Yu.P. (1977). Severo-zapadnaya chast Chernogo morya, kak obekt sovremennykh gidrobiolog-icheskikh issledovaniy. [North-western part of the Black Sea, as an object of modern hydrobiological re-search]. Biology of the sea, 77, 4, 3-6. [In Russian]

Tolmazin D.M., Ostrogin A.S., Kudryan A.P., BalashovA.I., Bulanaya Z.T. (1977). Analiz gidrologicheskikh i gidrokhimicheskikh faktorov formirovaniya gipoksii v mezhdureche Dunay – Dnestr [Analysis of hydrolog-ical and hydrochemical factors of hypoxia formation in the Danube-Dniester interfluve]. Biology of the sea, 43, 7–11. [In Russian]

Tolmazin D.M. (1977). Gidrologo-gidrokhimicheskaya struktura vod v rayonakh gipoksii i zamorov v severo-zapadnoy chasti Chernogo moray [Hydrological-hydrochemical structure of waters in areas of hypoxia and frosts in the northwestern part of the Black Sea]. Biology of the sea, 43, 12–17. [In Russian]

Berlinskiy N.A. (1989). Mekhanizm formirovaniya pridonnoy gipoksii v shelfovykh ekosistemakh. [The mechanism of formation of bottom hypoxia in shelf ecosystems]. Water resources, Moscow, 4, 112–121. [In Russian]

Berlinskiy N.A. (2012). Dinamika tekhnogennogo vozdeystviya na prirodnye kompleksy ustevoy oblasti Dunaya [Dynamics of technogenic impact on natural complexes of the estuary of the Danube]. Odessa : As-troprint, 252. [In Russian]

Berlinskiy N.A. (2016). Aktualnye problemy ukrainskogo uchastka Chernogo moray. [Actual problems of the Ukrainian section of the Black Sea]. Visnyk ONU. Ser. Geographical and geological science, 21(2), 11–23. [In Russian]

Berlinskij N.A. (2015). Ust'evye oblasti kak osobyj geograficheskij ob#ekt. Vіsnik ONU. Ser.: Geografіchnі ta geologіchnі nauki, 20(1), 41–55. [In Russian]

Berlinskyi N, Safranov T. (2016). Spatial and temporal variability of pollutants in the bottom sediments in the northwestern part of the Black Sea. Environmental problems, 1(1), 69–73.

Berlinskiy N.A. (2017). Ekologіchnі aspekti gіdrologії pіvnіchno-zahіdnіj chastinі Chornogo morja // Stan ta jakіst' prirodnogo seredovishha priberezhnoї zoni Pіvnіchno-Zahіdnogo Prichornomor’ja. za red. T.A. Saf-ranova, A.V. Chugaj. Chuguєv: Panov A.M., 300. [In Ukrainian]

How to Cite
Berlinsky, N. A., & Popov, Y. I. (2018). The Near Bottom Hypoxia and Hydrogen Sulphide Formation on the Black Sea Shelf. Visnyk of V. N. Karazin Kharkiv National University Series «Еcоlogy», (18), 6-13.
New directions, innovative researches