Abstract
The paper presents new paleobotanical data in combination with the results of radiocarbon dating obtained from organomineral deposits of the northern shore of Pechevalavato Lake (70°13′22.3″ N, 71°50′57.6″ E) in the Seyakha River basin and characterizing the dynamics of vegetation in the northern part of Central Yamal in the Holocene. It has been shown that a tree birch (Betula sect. Betula) grew in Yamal in the early Holocene (10.2–8.7 cal kyr BP) no less than 400 km north of the modern northern limit of distribution of Betula pubescens ssp. tortuosa. Favorable conditions for the existence of birch woodlands at this time were provided by a higher temperature of the growing season, exceeding the modern parameters of the warmest month of the summer season by approximately 3–4°C. At the end of the early Holocene (after 8.5 cal kyr BP), forest vegetation began to degrade, and open landscapes with diverse plant communities of the subarctic tundra and single trees in the river valley spread. About 6.5 cal kyr BP, the northern subarctic tundra began to form the zonal appearance of the study area in climatic conditions close to modern ones.
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ACKNOWLEDGMENTS
The authors are grateful to S.S. Trofimova (Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences) for her help in preparing Figure 1 for publication.
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The authors express their gratitude to the Administration of the Yamalo-Nenets Autonomous Okrug for financial support. The work was also supported by the state assignment of the Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences No. 122021000095-0.
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Lapteva, E.G., Korona, O.M. & Kosintsev, P.A. Dynamics of the Vegetation of Central Yamal in the Holocene. Russ J Ecol 55, 1–11 (2024). https://doi.org/10.1134/S1067413624010053
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DOI: https://doi.org/10.1134/S1067413624010053