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Holocene vegetation and climate changes in the North-Eastern Caucasus (pollen data from mountains and plain peatlands)статья
- Авторы: Ryabogina N.E., Nasonova E.D., Borisov A.V., Idrisov I.A.
- Сборник: The 5th International Conference “Ecosystem dynamics in the Holocene”
- Серия: IOP Conf. Series: Earth and Environmental Science
- Том: 438
- Год издания: 2020
- Место издания: IOP Publishing
- DOI: 10.1088/1755-1315/438/1/012024
- Аннотация: Dagestan (North-Eastern part of the Caucasus) is characterized by a unique historical and environment development, however, there is little, if no, data on nature changes throughout the Holocene history of the region. In contrast to the much-studied neighboring Caucasus regions, Dagestan remains mostly unexplored from the standpoint of paleoecology. In 2017, we investigated a detailed radiocarbon-dated 185 cm peat sequence from the Shotota swamp located in the mountainous zone of Dagestan. Peat and soil deposits span most of the Holocene (about 9000 years), and they let us study vegetation history of the Eastern Caucasus for the first time. The results of the study show significant discrepancies in the timing and sequence of the expansion of tree species in the Holocene in comparison with Transcaucasia and the Western Caucasus. The second key study, an examination of a 270 cm peat sequence from Arkida swamp, formed in the second half of the Holocene, also provided new paleoenvironmental data on the south of the Caspian lowland. The vegetation of the flat parts of Dagestan, adjacent to the mountainous zone, has been dry and treeless for the last four thousand years, however, humidification fluctuations and vegetation changes were distinguished. © Published under licence by IOP Publishing Ltd.
- Добавил в систему: Борисов Александр Владимирович