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Unstable early-Holocene climatic and environmental conditions in northwestern Russia derived from a multidisciplinary study of a lake-sediment sequence from Pichozero, southeastern Russian Karelia

Wohlfarth, B; Schwark, L; Bennike, O; Filimonova, L; Tarasov, P; Björkman, Leif LU ; Brunnberg, L; Demidov, I and Possnert, G (2004) In The Holocene 14(5). p.732-746
Abstract
A sediment core from Lake Pichozero (61degrees46'; N, 37degrees25'; E 118 m a.s.l.) provides information on the environmental and climatic conditions in southeastern Russian Karelia during the Lateglacial and early Holocene (12800-9300 cal. BP). The chronology of the sequence is constrained by varve counting and AMS C-14 measurement of terrestrial plant macrofossils. Multiproxy analyses (magnetic susceptibility, grain size, TOC, TN, TS, Rock Eval, pollen and macrofossils) imply that cold and dry regional climatic conditions with sparse Arctic vegetation prevailed prior to 11500 cal. BP. Coincident with the transition to the Holocene at 11500 cal. BP, air temperatures and lake productivity increased and Betula pubescens and Populus tremula... (More)
A sediment core from Lake Pichozero (61degrees46'; N, 37degrees25'; E 118 m a.s.l.) provides information on the environmental and climatic conditions in southeastern Russian Karelia during the Lateglacial and early Holocene (12800-9300 cal. BP). The chronology of the sequence is constrained by varve counting and AMS C-14 measurement of terrestrial plant macrofossils. Multiproxy analyses (magnetic susceptibility, grain size, TOC, TN, TS, Rock Eval, pollen and macrofossils) imply that cold and dry regional climatic conditions with sparse Arctic vegetation prevailed prior to 11500 cal. BP. Coincident with the transition to the Holocene at 11500 cal. BP, air temperatures and lake productivity increased and Betula pubescens and Populus tremula started to migrate into the area, followed by Picea abies at 10750 cal. BP. Although lake productivity decreased at around 11000 cal. BP and remained low until 9600 cal. BP, pollen-based climate reconstructions imply variable climatic conditions in the region over time. Drier and colder summers prevailed from similar to11200 to 10900 cal. BP, followed by an interval of higher annual temperatures and precipitation from 10900 to 10750 cal. BP. Lower annual temperatures and drier conditions existed from 10750 to 10200 cal. BP, and higher temperatures and precipitation are inferred between 10200 and 10000 cal. BP. Finally, declining temperatures and precipitation occurred from 10000 cal. BP onwards, with a minimum at around 9600 cal. BP. These climatic shifts are temporally coincident with those recorded in North Atlantic terrestrial, marine and ice-core archives and indicate that relatively minor climate signals were transmitted further to the east. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
lacustrine sediments, palaeoclimate, palaeoenvironment, multiproxy study, early Holocene, northwestern Russia, Lateglacial
in
The Holocene
volume
14
issue
5
pages
732 - 746
publisher
SAGE Publications Inc.
external identifiers
  • wos:000223638700009
  • scopus:4544365254
ISSN
0959-6836
DOI
10.1191/0959683604hl751rp
language
English
LU publication?
yes
id
a0e41828-921a-4fa1-917d-beb3e9e95bd9 (old id 268564)
date added to LUP
2007-11-05 15:45:37
date last changed
2017-10-22 03:36:56
@article{a0e41828-921a-4fa1-917d-beb3e9e95bd9,
  abstract     = {A sediment core from Lake Pichozero (61degrees46'; N, 37degrees25'; E 118 m a.s.l.) provides information on the environmental and climatic conditions in southeastern Russian Karelia during the Lateglacial and early Holocene (12800-9300 cal. BP). The chronology of the sequence is constrained by varve counting and AMS C-14 measurement of terrestrial plant macrofossils. Multiproxy analyses (magnetic susceptibility, grain size, TOC, TN, TS, Rock Eval, pollen and macrofossils) imply that cold and dry regional climatic conditions with sparse Arctic vegetation prevailed prior to 11500 cal. BP. Coincident with the transition to the Holocene at 11500 cal. BP, air temperatures and lake productivity increased and Betula pubescens and Populus tremula started to migrate into the area, followed by Picea abies at 10750 cal. BP. Although lake productivity decreased at around 11000 cal. BP and remained low until 9600 cal. BP, pollen-based climate reconstructions imply variable climatic conditions in the region over time. Drier and colder summers prevailed from similar to11200 to 10900 cal. BP, followed by an interval of higher annual temperatures and precipitation from 10900 to 10750 cal. BP. Lower annual temperatures and drier conditions existed from 10750 to 10200 cal. BP, and higher temperatures and precipitation are inferred between 10200 and 10000 cal. BP. Finally, declining temperatures and precipitation occurred from 10000 cal. BP onwards, with a minimum at around 9600 cal. BP. These climatic shifts are temporally coincident with those recorded in North Atlantic terrestrial, marine and ice-core archives and indicate that relatively minor climate signals were transmitted further to the east.},
  author       = {Wohlfarth, B and Schwark, L and Bennike, O and Filimonova, L and Tarasov, P and Björkman, Leif and Brunnberg, L and Demidov, I and Possnert, G},
  issn         = {0959-6836},
  keyword      = {lacustrine sediments,palaeoclimate,palaeoenvironment,multiproxy study,early Holocene,northwestern Russia,Lateglacial},
  language     = {eng},
  number       = {5},
  pages        = {732--746},
  publisher    = {SAGE Publications Inc.},
  series       = {The Holocene},
  title        = {Unstable early-Holocene climatic and environmental conditions in northwestern Russia derived from a multidisciplinary study of a lake-sediment sequence from Pichozero, southeastern Russian Karelia},
  url          = {http://dx.doi.org/10.1191/0959683604hl751rp},
  volume       = {14},
  year         = {2004},
}