THE INFLUENCE OF MARINE ENVIRONMENT VARIABILITY TO THE DYNAMIC OF THE BLACK SEA PHILLOPHORA AREA (ZERNOV FIELD)
Journal Title: Вісник Одеського національного університету. Географічні та геологічні науки - Year 2014, Vol 19, Issue 2
Abstract
Red algae of the genus Phyllophora is located in the central part of the Black Sea shelf. Congestion of this algae is unique and named Zernov field. Phyllophora is important in the pharmaceutical and food industries. In a period of euthrophpication (1970 – 90) and effect of near bottom hypoxia – as a consequence, there was degradation of the field and decreasing of algae biomass. The negative factors of influence are: decreasing of water transparence, silting of sediments, irrational expatiation of benthic communities algae is including and possible, influence of oil and gas drilling stations in adjacent area. During the lust decade recovering of Phyllophora field had been marked. The main reasons are: decreasing of nutrient run off from the rivers and suspended matter organic and inorganic origin, increasing of water transparency and ban bottom trawling. Estimation of priority contamination into Phyllophora had been done. Concentration of toxic metals decreased in twice comparing with the period of 2000-Th. The total number of algae species increased in 2 – 3 times. All these confirm the environment amelioration in Zerov field area. The level of contamination of bottom sediments in the Phyllophora field equals to ecological standards as a good quality (second integrated class). At the same time, some influence of pollution from oil and gas drilling stations in adjacent area had been marked. For determination of near bottom hypoxia phenomena and its influence to Phyllophora field condition it is necessary to continue additional scientific investigation in summer – autumn period, i.e. in a period of large scale hypoxia spreading in the Northwestern part of the Black sea.
Authors and Affiliations
N. A. Berlinsky, Yu. M. Denga, A. V. Matveev, O. S. Podust, Yu. I. Popov, I. P. Tretyak
Keywords
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