CHANGING OF LANDSCAPE-CLIMATIC CONDITION OF COASTS OF THE AZOV SEA IN THE MIDDLE AND LATE HOLOCENE
https://doi.org/10.7868/S2587556618030081
Abstract
The article presents the results of the pollen analysis of the marine sediments of the Azov Sea. Conducted research of subrecent pollen spectra of surface sediment layer is allowed to form an idea of the character of vegetation cover of the coast. The composition and ratio of the main spectrum components agree well with the structure of the surrounding steppe communities, which indicates the prospectivity of the method for regional paleoreconstructions. According to the obtained radiocarbon data, the studied marine sediments were formed during the last 6500 calendar years BP. In the pollen spectra of most columns, there is a high content of pollen of herbaceous plants (80% on average). The group of grasses is dominated by pollen of Chenopodiaceae, Artemisia and Poaceae, in addition, there is a permanent presence of pollen grains of indicative species of dry steppe communities (Ephedra, Plumbaginaceae). However, vegetation cover and climate did not remain constant. A set of phases had been revealed for the last 6500 calendar years BP, namely, 6200–5700, 5500–4000, 3200–2500, 1800–1500, and 650–150 calendar years ago BP, characterized by a significant increase in the amount of pollen of tree species (up to 40%). During these phases, probably, there was the expansion of the area occupied by the forest vegetation in valleys of large rivers under more humid climatic conditions.
About the Authors
G. G. Matishov
Southern Scientific Center, Russian Academy of Sciences;
Murmansk Marine Biological Institute, Kola Science Center, Russian Academy of Sciences
Russian Federation
Russian Federation
Rostov-on-Don;
Murmansk
K. V. Dyuzhova
Southern Scientific Center, Russian Academy of Sciences;
Institute of Arid Zones, Southern Scientific Center, Russian Academy of Sciences
Russian Federation
Rostov-on-Don
Russian Federation
Rostov-on-Don
E. Yu. Novenko
Lomonosov Moscow State University;
Institute of Geography, Russian Academy of Sciences
Russian Federation
Moscow
Russian Federation
Moscow
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Graphical Abstract
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1. Pollen diagram of the sediment core from the central part of the Sea of Azov | |
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- Pollen analysis of the Holocene deposits of the Sea of Azov detailed the palaeoreconstruction of the region.
- The subrecent pollen spectra of the Sea of Azov are consistent with the surrounding plant communities.
- Steppe communities were widespread as a zonal type of vegetation during the Middle and Late Holocene in the Sea of Azov region.
- Five humid phases influenced the vegetation of the Sea of Azov region during the last 6500 calendar years.
Review
For citations:
Matishov G.G., Dyuzhova K.V., Novenko E.Yu. CHANGING OF LANDSCAPE-CLIMATIC CONDITION OF COASTS OF THE AZOV SEA IN THE MIDDLE AND LATE HOLOCENE. Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya. 2018;(3):67-78. (In Russ.) https://doi.org/10.7868/S2587556618030081
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