The long-term dynamics of the sea bottom sediments pollution of the Kruglaya Bay (Black Sea)
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Abstract
The relevance of the Kruglaya Bay’s pollution research is specified due to adverse situation in its water areas during the seasons with increased anthropogenic pressure and environmental conditions favorable for the activation of biological growth. This is especially true for the organic pollution, originating both from emergency sources, and from the metabolites of the organisms. Sea bottom sediments are the final destination of the migration and deposition of these substances, analysis of which gives the opportunity to present a stable picture of the contamination. Therefore, the aim of the work was to evaluate the long-term changes in the state of the sea bottom sediments of the bay. The material for the study is based on the samples of sea bottom sediments, collected in the Kruglaya Bay by Petersen bottom sampler. The total amount of chloroform-extractable substances was determined by gravimetric method in properly prepared air-dried samples, while the amount of oil hydrocarbons was determined by infrared spectrometry. The analysis of long-term dynamics of the sea bottom sediments pollution in the Kruglaya Bay in period of 2006–2012 was conducted. The results showed that pollution by the organic substances in the water area of the Kruglaya Bay was unevenly distributed and was confined to its sources: the central part of the bay is clean, while the level of pollution of its highest peaks reaches the degree of contamination of the IV level. There is an intense accumulation of pollutants at st. 01, as evidenced by the results of concentrations chloroform-extractable substances (at this st. – 900 mg·100g−1, while the littoral deposits near the station contained 620 mg·100g−1). Thus, the common concentration of chloroform-extractable substances is decreased for the entire study period, with the exception of st. 02, but the proportion of oil hydrocarbons is higher at the whole water area of the Kruglaya Bay’s top.
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References
Алёмов С. В., Витер Т. В. Сообщества макрозообентоса вершины б. Круглая (Севастополь, Чёрное море) // Экологические проблемы Азово-Черноморского региона и комплексное управление прибрежной зоной: материалы молодёж. науч.-практ. конф. (г. Севастополь, 29 сент. – 05 окт. 2014 г.). Севастополь, 2014. С. 176–180. [Alyomov S. V., Viter T. V. Macrozoobentos communities of Kruglaya bay head (Sevastopol, Black Sea). In: Ecological problems of the Azov-Black sea region and integrated coastal management: materials of youth scientific-practical conference (Sevastopol, 29 Sept. – 05 Oct. 2014). Sevastopol, 2014, pp. 176–180. (in Russ.)].
Кирюхина Л. Н. Влияние гранулометрического состава донных осадков на накопление аллохтонных углеводородов // Экология моря. 1982. Вып. 10. С. 36–39. [Kiryukhina L. N. The influence granulometric composition of bottom sediments on allochtnonic hydrocarbon accumulation. Ekologiya morya, 1982, iss. 10, pp. 36–39. (in Russ.)].
Кирюхина Л. Н., Миронов О. Г. Химическая и микробиологическая характеристика донных осадков севастопольских бухт в 2003 г. // Экология моря. 2004. Вып. 66. С. 53–58. [Kiryukhina L. N., Mironov O. G. Chemical and bacterial characteristics on marine bottom sediments in Sevastopol bays in 2003. Ekologiya morya, 2004, iss. 66, pp. 53–58. (in Russ.)].
Ковардаков С. А., Празукин А. В. Структурно-функциональные характеристики донного фитоценоза бухты Круглой (Севастополь) // Экосистемы, их оптимизация и охрана. 2012. Вып. 7. С. 138–148. [Kovardakov S. A., Prazukin A. V. Structural and functional characteristics of the bottom seaweeds community in Kruglaya bay (Sevastopol). Ekosistemy, ikh optimizatsiya i okhrana, 2012, iss. 7, pp. 138–148. (in Russ.)].
Колесникова Е. А., Мазлумян С. А. Сезонная динамика мейобентоса зарослей цистозиры в бухте Круглая // Проблемы устойчивого развития приморских городов. Севастополь : Аквавита. 2002. С. 192–203. [Kolesnikova E. A., Mazlumjan S. A. An ecological and geochemical state of coastal marine and terrestrial landscapes as a criterion of sustainable development of coastal territories. In: Problems of sustainable development of coastal cities and towns. Sevastopol: Aquavita, 2002, pp. 192–203. (in Russ.)].
Куфтаркова Е. А., Родионова Н. Ю., Губанов В. И., Бобко Н. И. Гидрохимическая характеристика отдельных бухт Севастопольского взморья // Труды ЮгНИРО. 2008. Т. 46. С. 110–111. [Kuftarkova E. A., Rodionova N. Yu., Goubanov V. I., Bobko N. I. Hydrochemical characteristics of several bays of Sevastopol coast. Trudy YugNIRO, 2008, vol. 46, pp. 110–111. (in Russ.)].
Определение загрязняющих веществ в пробах морских донных отложений и взвеси. Методические указания. Москва: ФСР по гидромет. и монитор. окр. среды. 1996. 46 с. [Opredelenie zagryaznyayushchikh veshchestv v probakh morskikh donnykh otlozhenii i vzvesi. Metodicheskie ukazaniya. Moscow: FSR po gidromet. i monitor. okr. sredy. 1996, 46 p. (in Russ.)].
Рубцова С. И., Тихонова Е. А., Бурдиян Н. В., Дорошенко Ю. В. Оценка экологического состояния Севастопольских бухт Чёрного моря по основным химическим и микробиологическим критериям // Морской экологический журнал. 2013. Т. 12, № 2. С. 38–50. [Rubtsova S. I., Tikhonova E. A., Burdiyan N. V., Doroshenko Yu. V. The estimation of the ecological state of Sevastopol bays on basic chemical and microbiological criteria. Morskoi ekologicheskii zhurnal, 2013, vol. 12, no. 2, pp. 38–50. (in Russ.)].
Тихонова Е. А., Шалыгина А. С. Экологическое состояние бухты Круглой (Чёрное море) в 2015 году // «Pontus Euxinus – 2015»: тезисы IX Всерос. науч.-практ. конф. молодых ученых (с международным участием) по проблемам водных экосистем (Севастополь, 17–20 ноября 2015 г.). Севастополь, 2015. С. 172–173. [Tikhonova E. A., Shalygina A. S. Ekologicheskoe sostoyanie bukhty Krugloi (Chernoe more) v 2015 godu. In: ‘Pontus Euxinus – 2015’: tezisy IX Vseros. nauch.-prakt. konf. molodykh uchenykh (s mezhdunarodnym uchastiem) po problemam vodnykh ekosistem (Sevastopol, 17–20 Nov. 2015). Sevastopol, 2015, pp. 172–173. (in Russ.)].
