Late-Glacial and Early Holocene history of Lake Khotavets (Mologa-Sheksna Lowland, NW Russia): a geodiversity conservation case study

D.O. Sadokov; T.V. Sapelko; G.B. Fedorov

doi:10.31951/2658-3518-2022-A-4-1562

Авторы

D.O. Sadokov ^1,2
T.V. Sapelko ³
G.B. Fedorov ^2,4

¹ Darwin State Nature Biosphere Reserve, vil. Borok, 44, Cherepovets district, Vologda region, 162723, Russia
² Institute of Earth Sciences, St. Petersburg State University, Universitetskaya Emb., 7-9, St. Petersburg, 199034, Russia
³ Institute of Limnology of the Russian Academy of Sciences SPC RAS, Sevastianova. Str., 9, St. Petersburg, 196105, Russia
⁴ Arctic and Antarctic Research Institute, Beringa Str., 38, St. Petersburg, 199397, Russia

DOI:

https://doi.org/10.31951/2658-3518-2022-A-4-1562

Ключевые слова:

palaeolimnology, Early Holocene, Late Glacial, pollen, geochemical proxies, sedimentation, geodiversity

Аннотация

Evolution and regional climate changes during the Late Glacial/Holocene transition were studied using organic and inorganic geochemical proxies and pollen data from Lake Khotavets (NW Russia). Palaeoclimatic and palaeosedimentation sequence was described for the time slices 13.5 – 12.9, 12.9 – 11.8 and 11.8 – 11.1 cal. ka BP, attributed to the Allerød, Younger Dryas and Preboreal, respectively. Rapid organic accumulation, decrease of minerogenic input and woods expansion ~11.8 cal. ka BP were associated with the Holocene warming. The presented reconstruction determines scientific justification for specific geodiversity conservation.