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Holocene climate an...
Holocene climate and environmental change in north-eastern Kamchatka (Russian Far East), inferred from a multi-proxy study of lake sediments
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- Andrén, Elinor (författare)
- Södertörns högskola,Miljövetenskap,Sodertom Univ, Sch Nat Sci Technol & Environm Studies, Huddinge, Sweden.
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- Klimaschewski, Andrea (författare)
- Queen's University Belfast, UK,Queens Univ Belfast, Sch Geog Archaeol & Palaeoecol, Belfast BT7 1NN, Antrim, North Ireland.
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- Self, Angela E. (författare)
- The Natural History Museum, London, UK,Nat Hist Museum, Dept Life Sci, London SW7 5BD, England.
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- St. Amour, Natalie (författare)
- University of Western Ontario, London, Ontario, Canada,Univ Western Ontario, Dept Earth Sci, London, ON, Canada.
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- Andreev, Andrei A. (författare)
- University of Cologne, Cologne, Germany,Univ Cologne, Inst Geol & Mineral, D-50931 Cologne, Germany.;Kazan Fed Univ, Inst Geol & Petr Technol, Kazan, Russia.
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- Bennett, Keith D. (författare)
- Uppsala universitet,Paleobiologi,Queens Univ Belfast, Sch Geog Archaeol & Palaeoecol, Belfast BT7 1NN, Antrim, North Ireland.,Kazan Federal University, Kazan, Russia / Uppsala University
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- Conley, Daniel (författare)
- Lund University,Lunds universitet,Kvartärgeologi,Geologiska institutionen,Naturvetenskapliga fakulteten,Quaternary Sciences,Department of Geology,Faculty of Science,Lund Univ, Dept Geol, Quaternary Sci, Lund, Sweden.,Lund University, Lund, Sweden
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- Edwards, Thomas W.D. (författare)
- University of Waterloo, Ontario, Canada,Univ Waterloo, Dept Earth & Environm Sci, Waterloo, ON N2L 3G1, Canada.
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- Solovieva, Nadia (författare)
- Kazan Federal University, Kazan, Russia / University College London, UK,Kazan Fed Univ, Inst Geol & Petr Technol, Kazan, Russia.;UCL, Dept Geog, London WC1E 6BT, England.
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- Hammarlund, Dan (författare)
- Lund University,Lunds universitet,Kvartärgeologi,Geologiska institutionen,Naturvetenskapliga fakulteten,Quaternary Sciences,Department of Geology,Faculty of Science,Lund Univ, Dept Geol, Quaternary Sci, Lund, Sweden.,Lund University, Lund, Sweden
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(creator_code:org_t)
- Elsevier BV, 2015
- 2015
- Engelska.
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Ingår i: Global and Planetary Change. - : Elsevier BV. - 0921-8181 .- 1872-6364. ; 134, s. 41-54
- Relaterad länk:
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https://doi.org/10.1...
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https://sh.diva-port... (primary) (Raw object)
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https://doi.org/10.1...
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http://dx.doi.org/10... (free)
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://lup.lub.lu.s...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- A sediment record from a small lake in the north-eastern part of the Kamchatka Peninsula has been investigated in a multi-proxy study to gain knowledge of Holocene climatic and environmental change. Pollen, diatoms, chironomids and selected geochemical parameters were analysed and the sediment record was dated with radiocarbon. The study shows Holocene changes in the terrestrial vegetation as well as responses of the lake ecosystem to catchment maturity and multiple stressors, such as climate change and volcanic eruptions. Climate change is the major driving force resulting in the recorded environmental changes in the lake, although recurrent tephra deposition events also contributed. The sediment record has an age at the base of about 10,000 cal yrs BP, and during the first 400 years the climate was cold and the lake exhibited extensive ice-cover during winter and relatively low primary production. Soils in the catchment were poor with shrub alder and birches dominatingthe vegetation surrounding the lake. At about 9600–8900 cal yrs BP the climate was cold and moist, and strong seasonal wind stress resulted in reduced ice-cover and increased primary production. After ca. 8900 cal yrs BP the forest density increased around the lake, runoff decreased in a generally drier climate resulting in decreasedprimary production in the lake until ca. 7000 cal yrs BP. This generally dry climate was interrupted by a brief climatic perturbation, possibly attributed to the 8.2 ka event, indicating increasingly windy conditions with thick snow cover, reduced ice-cover and slightly elevated primary production in the lake. The diatom record shows maximum thermal stratification at ca. 6300–5800 cal yrs BP and indicates together with the geochemical proxies a dry and slightly warmer climate resulting in a high productive lake. The most remarkably change in the catchment vegetation occurred at ca. 4200 cal yrs BP in the form of a conspicuous increase in Siberian dwarf pine (Pinus pumila), indicating a shift to a cooler climate with a thicker and more long-lasting snow cover. Thisvegetational change was accompanied by marked shifts in the diatom and chironomid stratigraphies, which are also indicative of colder climate and more extensive ice-cover.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geologi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Multidisciplinär geovetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geosciences, Multidisciplinary (hsv//eng)
Nyckelord
- pollen
- diatoms
- chironomids
- geochemistry
- climate change
- tephras
- Environmental Studies
- Miljövetenskapliga studier
- Pollen
- Diatoms
- Chironomids
- Geochemistry
- Climate change
- Tephras
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Andrén, Elinor
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Klimaschewski, A ...
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Self, Angela E.
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St. Amour, Natal ...
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Andreev, Andrei ...
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Bennett, Keith D ...
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visa fler...
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Conley, Daniel
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Edwards, Thomas ...
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Solovieva, Nadia
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Hammarlund, Dan
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