Journal of Palaeogeography
 
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  2019, Vol. 8 Issue (1): 43-67    DOI: 10.1186/s42501-018-0019-x
Biopalaeogeography and palaeoecology Current Issue| Next Issue| Archive| Adv Search Previous  |  Next
Past climate and vegetation in Southeast Bulgaria ���� a study based on the late Miocene pollen record from the Tundzha Basin
Dimiter Ivanov, Maria Lazarova
Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 23 Acad. G. Bonchev Str., BG-1113 Sofia, Bulgaria
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Abstract The results of palynological studies on the late Miocene freshwater deposits of the Tundzha Basin (Southeast Bulgaria, SE Europe) are presented. The basin is relatively well known in terms of geology and palaeogeography. The age of sediments in the Tundzha Basin ranges between the late Miocene to the Pliocene, based on mammal and diatom fossils. We carried out a palynological analysis of clayey sediments interlayered with coal beds from four cores and from one outcrop, aiming to obtain information about the composition and the structure of fossil vegetation. The ratios between the main floristic elements and the composition of the fossil flora are analysed and discussed from a palaeoecological point of view. Several main vegetation palaeocommunities were recorded: swamp forests, mixed mesophytic, communities of aquatic plants, and herbaceous palaeocoenoses. The changes in vegetation and in plant diversity are identified. The palaeoclimate analysis indicates a warm temperature climate with high rainfall and mild winter temperatures, without seasonal drier conditions. The early Pontian climate was about 3-4°C warmer than today, with rainfalls per year at least 300 mm higher than today. The results of palaeoecological analysis of the flora and of the quantitative palaeoclimate data show that the climate in the Southeast Bulgaria indicates a climate change towards slight cooling and some drying. This event is consistent with the period of accumulation of the upper, undivided part of the Elhovo Formation.
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Key words: Palynology   Palaeobotany   Coexistence Approach   Neogene   Tundzha Basin   Bulgaria     
Received: 19 March 2018
Corresponding Authors: *E-mail address: dimiter@bio.bas.bg (Dimiter Ivanov).   
Cite this article:   
. Past climate and vegetation in Southeast Bulgaria ���� a study based on the late Miocene pollen record from the Tundzha Basin[J]. , 2019, 8(1): 43-67.
. Past climate and vegetation in Southeast Bulgaria ���� a study based on the late Miocene pollen record from the Tundzha Basin[J]. Journal of Palaeogeography, 2019, 8(1): 43-67.
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http://journal09.magtechjournal.com/Jweb_jop/EN/10.1186/s42501-018-0019-x     OR     http://journal09.magtechjournal.com/Jweb_jop/EN/Y2019/V8/I1/43
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