Analysis of pollen, dinoflagellate cysts and lithology was carried out on ten cores from the western deep Black Sea and combined with radiocarbon dating to reconstruct the vegetation, climate and palaeoecological conditions. All the cores record a consistent sequence of Lateglacial and early Holocene steppe vegetation, which persisted until about 7100-7500 yr BP when Quercus, Corylus, Tilia and other temperate trees expanded, at about the same time as the influx of Mediterranean waters that resulted in sapropel deposition in the deep Black Sea. The sequence implies dry climatic conditions and a low level of the Black Sea during the early Holocene.
Aksu, A. , Mudie, P. , Rochon A. , Kaminski, M. , Abrajano, T. and Dogan Y.2002: Persistent Holocene outflow from the Black Sea to the Eastern Mediterranean contradicts Noah's Flood Hypothesis . Geological Society of America Today12, 4-10 .
2.
Atanassova, J. 1990: Vegetation development during the late Quaternary according to spore-pollen analysis of sediments from the western sector of the Black Sea. PhD Thesis, Sofia University (in Bulgarian).
3.
Atanassova, J.1995a: Dinoflagellate cysts of Late Quaternary and recent sediments from the western Black Sea . University of Sofia Faculty of Biology. Annals87, 17-29 .
4.
Atanassova, J.1995b: Palynological data of three deep-water cores from the western part of the Black Sea. In Bozilova, E. and Tonkov, S. , editors, Advances in Holocene palaeoecology in Bulgaria. Sofia Moskow: Pensoft , 68-83.
5.
Atanassova, J.1999: Palaeoecological investigations of Late Quaternary sediments from the western part of the Black Sea . Acta Palaeobotanica2, 545-548 .
6.
Atanassova, J.2002:Palynological data of Holocene sapropel muds in the northwestern part of the Black Sea. In Temniskova, D. , editor, Proceedings of sixth national conference of botany, June 18-20, 2001. Sofia: Sofia University Press , 141-146 (in Bulgarian).
7.
Atanassova, J. and Bozilova, E.1992: Palynological investigations of marine sediments from the western sector of the Black Sea . Okeanology1, 97-103 .
8.
Atanassova, J.1998: Marinopalynological evidence for the Late Quaternary vegetation and climatic changes along the Bulgarian Black Sea coast. In Tsekos, I. and Moustakas, M. , editors, Progress in botanical research (Proceedings of the 1st Balkan botanical congress). Dordrecht: Kluwer Acadmic Publishers , 25-28.
9.
Bozilova, E. and Beug, H.J.1992: On the Holocene history of vegetation in SE Bulgaria (Lake Arkutino, Ropotamo region) . Vegetation History and Archaeobotany1, 19-32 .
10.
Atanassova, J.1994: Studies on the vegetation history of Lake Varna region, northern Black Sea coastal area of Bulgaria . Vegetation History and Archaeobotany3, 143-154 .
11.
Bozilova E. and Filipova, M.1986:Palaeoecological environment in northeastern Black Sea area during Neolithic, Eneolithic, and Bronze periods . Studia Praehistorica8, 160-166 .
12.
Bozilova, E. and Tonkov, S.1998: Towards the vegetation and settlement history of the southern Dobrudza coastal region, northeastern Bulgaria: a pollen diagram from Lake Durankulak . Vegetation History and Archaeobotany7, 141-148 .
13.
Chepalyga, A.1984: Inland sea basins. In Wright, H.E. and Barnosky, C.W , editors, Late Quaternary environments of the Soviet Union. London: Longmans , 229-247.
14.
Degens, E. and Hecky, R.1973: Palaeoclimatic reconstruction of the Late Pleistocene and Holocene based on biogenetic sediments from the Black Sea and tropical African lakes. Colloque Internat. du CNRS ‘Methodes quantitative d'etudes des variations du climate au cours du Pleistocene’, 1-29.
15.
Degens, E.T. and Ross, D.A.1974: The Black Sea: geology, chemistry and biology . American Association of Petroleum Geologists Memoir20, 633-633 pp.
16.
Degens, E.T. , Michaelis, W. , Garrasi, C. , Mopper, K. , Kempe, S. and Ittekkot, V.A.1980: Varven Chronologie und fruhdi-agenetische Umsetzungen organischer Substanzen holozaner Sedimente des Schwarzen Meeres . Neues Jahrbuch Geologisch-Palaeontologischer Monatschefte5, 65-86 .
17.
Faegri, K. and Iversen, J.1975: Textbook ofpollen analysis. Oxford: Blackwell , 290-290 pp.
18.
Filipova-Marinova, M.2003: Postglacial vegetation dynamics in the coastal part of the Strandza Mountains, southeastern Bulgaria. In Tonkov, S. , editor, Aspects of palynology and palaeoecology. Sofia Moscow: Pensoft Publishers , 213-231.
19.
Filipova-Marinova, M. and Bozilova, E.1990: Palaeoecological investigations of Lake Shabla-Ezerez on the Bulgarian Black Sea coast. In Krastev, T. , editor, Geological evolution of the western part of the Black Sea depression in Neogen-Quaternary. Bulgarian Academy of Sciences34-41 (in Russian).
20.
Grimm, E.C.1991: Tilia and Tilia Graph. Springfield IL: Illinois State Museum .
21.
Hay, B.J.1988: Sediment accumulation in the central westem Black Sea over the past 5100 years . Paleoceanography3, 491-508 .
22.
Hay, B.J. , Arthur, M.A. , Dean, W.E. , Neff, E.D. and Honjo, S.1991: Sediment deposition in the Late Holocene abyssal Black Sea with climatic and chronological implications . Deep Sea Research38, 1211-1235 .
23.
Johnson, R.G.2002: Secrets of the Ice Age. The role of the Mediterranean Sea in climate changes. Minnetonka MN: Glenjay Publishing .
24.
Jones, G.A. and Gagnon, A.R.1994: Radiocarbon dating of Black Sea sediments . Deep Sea Research41, 531-557 .
25.
Khrishev, Kh. , Vasilev, E. , Georgiev, V. , Kozucharov, E. , Ruskova, N. , Tshotshovski, S. , Shopov, V. and Jankova, D.1988: Lithostratigraphic and lithological peculiarities of upper Quaternary deep-water sediments of western Black Sea depression . Geologica Balcanica18, 5-17 .
26.
Kouli, K. , Brinkhuis, H. and Dale, B.2001: Spiniferites cruciformis: a fresh water dinoflagellate cyst?Review of Palaeobotany and Palynology113, 273-286 .
27.
Marinova, E.2005: Vergleichende palaoethnobotanische Unter-suchung zur Vegetations-geschichte und zur Entwicklung der priihistorischen Landnutzung in BulgarienDissertationes Botanice 403. Stuttgart: J Crame Publishers .
28.
Mudie, P. , Rochon, A. , Aksu, A. and Gillespie, H.2002: Dinoflagellate cysts, freshwater algae, and fungal spores as salinity indicators in Late Quatemary cores from Marmara and Black Sea . Marine Geology190, 203-231 .
29.
Rozdestvensky, A.1986: Hydrochemistry of the Bulgarian sector of the Black Sea. Sofia: Bulgarian Academy of Sciences (in Bulgarian).
30.
Ryan, W. and Pitman, W., III1999: Noah's Flood. The new scientific discoveries about the event that changed history. New York: Simon & Schuster .
31.
Ryan, W. , Pitman, W., III , Major, C. , Shimkus, K. , Maskalenko, V. , Jones, G. , Dimitrov, P. , Gorur, N. , Sakine, M. and Yuce, G.1997: An abrupt drowning of the Black Sea shelf . Marine Geology138, 119-126 .
32.
Ryan, W. , Major, C. , Lericolais, G. and Goldstein, S.2003: Catastrophic flooding of the Black Sea . Annual Reviews of Earth and Planeary Sciences31, 525-554 .
33.
Shopov, V.1989: Holocene coccoliths from the deep carbonate sediments of the Black Sea . Bulgarian Geological Society50, 46-51 (in Russian).
34.
Shopov, V. , Bozilova, E. and Atanassova, J.1992: Biostratigraphy and radiocarbon data of Upper Quatemary sediments from western part of the Black sea . Geologica Balcanica22, 59-69 .
35.
Stockmarr, J.1971: Tablets with spores used in absolute pollen analysis . Pollen et Spores13, 615-621 .
36.
Tonkov, S. and Bozilova, E.1995: Palaeoecological data about the end of the Holocene climatic optimum in Bulgaria, IV millennium BC . University of Sofia Faculty of Biology Annals87, 5-15 .
37.
Wall, D. , Dale, B. and Harada, K.1973: Descriptions of new fossil dinoflagellates from the late Quatemary of the Black Sea . Micropaleontology19, 18-31 .
38.
Wright, H. , Ammann, B. , Stefanova, I. , Atanassova, J. , Margalitadze, N. , Wick, L. and Blyakharchuk, T.2003: Lateglacial and early Holocene dry climates from the Balkan peninsula to southern Siberia. In Tonkov, S. , editor, Aspects of palynology and palaeoecology. Festshrift in honour of Elissaveta Bozilova. Sofia Moskow: Pensoft , 68-83.
