TY - JOUR

T1 - Peatland history under post-glacial climate changes in the southern Baikal region: Biogeochemical evidence from the Vydrino Bog (Tankhoi piedmont plain)

AU - Bobrov, Vladislav A.

AU - Maltsev, Anton E.

AU - Krivonogov, Sergey K.

AU - Preis, Yulia I.

AU - Klimin, Mikhail A.

AU - Leonova, Galina A.

N1 - The study was supported by the Russian Foundation for Basic Research (Projects 11-05-00655 A , 18-35-00072 mol_a ) and Ministry of Science and Higher Education of the Russian Federation . Work is done on state assignment of V.S. Sobolev Institute of Geology and Mineralogy Siberian Branch Russian Academy of Sciences , Project N 122041400193-7 and to the Institute of Climate and Environmental Monitoring Siberian Branch Russian Academy of Sciences , Project N 121031300155-8 . The study was carried put in Analytical Center for multi-elemental and isotope research SB RAS. Публикация для корректировки.

PY - 2023

Y1 - 2023

N2 - The paper presents new data and reviews previously obtained results on the late glacial to Holocene history of peatlands in the southern part of the Baikal region under conditions of regional climate changes. To better understand climate signals, we have combined vegetation and geochemical variation data in 4.6 m thick peat deposits in the Vydrino bog located on the Tankhoi piedmont plain south of Lake Baikal. The territory has been swamped since 13.1 cal ka BP when the peatland started developing as a fen upon a sedimentary substrate. The 13.1–9.5 cal kyr climate record included two events of warming separated by an excursion of dry cold climate. Warming continued till 9.0 cal ka BP and eutrophic peat formation occurred in favorable temperature and moisture conditions. Another warming episode between 9.0 and 8.4 cal ka BP ended up with the Holocene climate optimum while the bog became mesotrophic. About 7.3–6.5 cal ka BP, the temperature and moisture inputs were no longer optimal for fir and spruce forests in the Vydrino area, which led to dramatic changes in landscape and vegetation. The wet and warm climate gradually became drier and colder from 6.5 to 2.3 cal ka BP, with a brief warm excursion about 5.5–5.3 cal ka BP. The peat deposition was interrupted in a cold climate from ∼2.3 cal ka BP to ∼0.7 cal ka BP, and the bog became oligotrophic afterwards. The newly obtained data allowed us to compare the paleoclimatic indicators available for the south Baikal region to determine their compatibility and inconsistency. In addition, we provide a general view to the quality of the climate and environmental reconstructions in the Baikal region by comparison of the data on its peatland study.

AB - The paper presents new data and reviews previously obtained results on the late glacial to Holocene history of peatlands in the southern part of the Baikal region under conditions of regional climate changes. To better understand climate signals, we have combined vegetation and geochemical variation data in 4.6 m thick peat deposits in the Vydrino bog located on the Tankhoi piedmont plain south of Lake Baikal. The territory has been swamped since 13.1 cal ka BP when the peatland started developing as a fen upon a sedimentary substrate. The 13.1–9.5 cal kyr climate record included two events of warming separated by an excursion of dry cold climate. Warming continued till 9.0 cal ka BP and eutrophic peat formation occurred in favorable temperature and moisture conditions. Another warming episode between 9.0 and 8.4 cal ka BP ended up with the Holocene climate optimum while the bog became mesotrophic. About 7.3–6.5 cal ka BP, the temperature and moisture inputs were no longer optimal for fir and spruce forests in the Vydrino area, which led to dramatic changes in landscape and vegetation. The wet and warm climate gradually became drier and colder from 6.5 to 2.3 cal ka BP, with a brief warm excursion about 5.5–5.3 cal ka BP. The peat deposition was interrupted in a cold climate from ∼2.3 cal ka BP to ∼0.7 cal ka BP, and the bog became oligotrophic afterwards. The newly obtained data allowed us to compare the paleoclimatic indicators available for the south Baikal region to determine their compatibility and inconsistency. In addition, we provide a general view to the quality of the climate and environmental reconstructions in the Baikal region by comparison of the data on its peatland study.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85171445951&origin=inward&txGid=8e58f79569fac14d1461a78d5acc903f

UR - https://www.mendeley.com/catalogue/875e0be3-3038-3964-a242-f07db8eee169/

U2 - 10.1016/j.quaint.2023.09.007

DO - 10.1016/j.quaint.2023.09.007

M3 - Article

JO - Quaternary International

JF - Quaternary International

SN - 1040-6182

ER -