TY - JOUR

T1 - Climate, glacial and vegetation history of the polar Ural Mountains since c. 27 cal ka bp, inferred from a 54 m long sediment core from Lake Bolshoye Shchuchye

AU - Lenz, Marlene M.

AU - Andreev, Andrei

AU - Nazarova, Larisa

AU - Syrykh, Liudmila S.

AU - Scheidt, Stephanie

AU - Haflidason, Haflidi

AU - Meyer, Hanno

AU - Brill, Dominik

AU - Wagner, Bernd

AU - Gromig, Raphael

AU - Lenz, Matthias

AU - Rolf, Christian

AU - Kuhn, Gerhard

AU - Fedorov, Grigoriy

AU - Svendsen, John Inge

AU - Melles, Martin

N1 - Publisher Copyright: © 2021 The Authors Journal of Quaternary Science Published by John Wiley & Sons Ltd

PY - 2021/11/29

Y1 - 2021/11/29

N2 - Because continuous and high-resolution records are scarce in the polar Urals, a multiproxy study was carried out on a 54 m long sediment succession (Co1321) from Lake Bolshoye Shchuchye. The sedimentological, geochemical, pollen and chironomid data suggest that glaciers occupied the lake's catchment during the cold and dry MIS 2 and document a change in ice extent around 23.5–18 cal ka bp. Subsequently, meltwater input, sediment supply and erosional activity decreased as local glaciers progressively melted. The vegetation around the lake comprised open, herb and grass-dominated tundra-steppe until the Bølling-Allerød, but shows a distinct change to probably moister conditions around 17–16 cal ka bp. Local glaciers completely disappeared during the Bølling-Allerød, when summer air temperatures were similar to today and low shrub tundra became established. The Younger Dryas is confined by distinct shifts in the pollen and chironomid records pointing to drier conditions. The Holocene is characterised by a denser vegetation cover, stabilised soil conditions and decreased minerogenic input, especially during the local thermal maximum between c. 10 and 5 cal ka bp. Subsequently, present-day vegetation developed and summer air temperatures decreased to modern, except for two intervals, which may represent the Little Ice Age and Medieval Warm Period.

AB - Because continuous and high-resolution records are scarce in the polar Urals, a multiproxy study was carried out on a 54 m long sediment succession (Co1321) from Lake Bolshoye Shchuchye. The sedimentological, geochemical, pollen and chironomid data suggest that glaciers occupied the lake's catchment during the cold and dry MIS 2 and document a change in ice extent around 23.5–18 cal ka bp. Subsequently, meltwater input, sediment supply and erosional activity decreased as local glaciers progressively melted. The vegetation around the lake comprised open, herb and grass-dominated tundra-steppe until the Bølling-Allerød, but shows a distinct change to probably moister conditions around 17–16 cal ka bp. Local glaciers completely disappeared during the Bølling-Allerød, when summer air temperatures were similar to today and low shrub tundra became established. The Younger Dryas is confined by distinct shifts in the pollen and chironomid records pointing to drier conditions. The Holocene is characterised by a denser vegetation cover, stabilised soil conditions and decreased minerogenic input, especially during the local thermal maximum between c. 10 and 5 cal ka bp. Subsequently, present-day vegetation developed and summer air temperatures decreased to modern, except for two intervals, which may represent the Little Ice Age and Medieval Warm Period.

KW - Arctic Russia

KW - chironomids

KW - polar Ural Mountains

KW - pollen

KW - sediment core data

UR - http://www.scopus.com/inward/record.url?scp=85119330163&partnerID=8YFLogxK

U2 - 10.1002/jqs.3400

DO - 10.1002/jqs.3400

M3 - Article

AN - SCOPUS:85119330163

JO - Journal of Quaternary Science

JF - Journal of Quaternary Science

SN - 0267-8179

ER -