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2022•Limnology and Freshwater BiologyOpen access

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

D.O. Sadokov, Darwin State Nature Biosphere Reserve, vil. Borok, 44, Cherepovets district, Vologda region, 162723, Russia, T.V. Sapelko, G.B. Fedorov

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Abstract

Abstract. 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 Aller d, 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.

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Abstract. 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 Aller d, 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.

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Available abstract

Abstract. 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 Aller d, 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.

Key concepts: Holocene, Preboreal, Younger Dryas, Glacial period, Geodiversity, Physical geography, Geology, Paleontology

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