Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

Dan Hammarlund

Dan Hammarlund

Professor

Dan Hammarlund

Holocene climate variability on the Kola Peninsula, Russian Subarctic, based on aquatic invertebrate records from lake sediments

Författare

  • Elena A. Ilyashuk
  • Boris P. Ilyashuk
  • Vasily V. Kolka
  • Dan Hammarlund

Summary, in English

Sedimentary records of invertebrate assemblages were obtained from a small lake in the Khibiny Mountains, Kola Peninsula. Together with a quantitative chironomid-based reconstruction of mean July air temperature, these data provide evidence of Holocene climate variability in the western sector of the Russian Subarctic. The results suggest that the amplitude of climate change was more pronounced in the interior mountain area than near the White Sea coast. A chironomid-based temperature reconstruction reflects a warming trend in the early Holocene, interrupted by a transient cooling at ca. 8500-8000 cal yr BP with a maximum drop in temperature (ca. 1 degrees C) around 8200 cal yr BP. The regional Holocene Thermal Maximum, characterized by maximum warmth and dryness occurred at ca. 7900-5400 cal yr BP. During this period, July temperatures were at least 1 C higher than at present. The relatively warm and dry climate persisted until ca. 4000 cal yr BP, when a pronounced neoglacial cooling was initiated. Minimum temperatures, ca. 1-2 degrees C lower than at present, were inferred at ca. 3200-3000 cal yr BP. Faunal shifts in the stratigraphic profile imply also that the late-Holocene cooling was followed by a general increase in effective moisture. (C) 2013 University of Washington. Published by Elsevier Inc. All rights reserved.

Avdelning/ar

  • Kvartärgeologi
  • MERGE: ModElling the Regional and Global Earth system
  • BECC: Biodiversity and Ecosystem services in a Changing Climate

Publiceringsår

2013

Språk

Engelska

Sidor

350-361

Publikation/Tidskrift/Serie

Quaternary Research

Volym

79

Issue

3

Dokumenttyp

Artikel i tidskrift

Förlag

Academic Press

Ämne

  • Geology

Nyckelord

  • Midges
  • Chironomidae
  • Oribatid mites
  • Holocene
  • Palaeoclimate
  • Kola
  • Peninsula
  • Russia

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0033-5894