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Hans Linderson

Hans Linderson

Forskningsingenjör

Hans Linderson

South Swedish bog pines as indicators of Mid-Holocene climate variability

Författare

  • Johannes Edvardsson
  • Hanns Hubert Leuschner
  • Hans Linderson
  • Hans W. Linderholm
  • Dan Hammarlund

Summary, in English

Dendroclimatic investigations of subfossil Scots pine (Pinus sylvestris) from two raised bogs in southern Sweden yielded a continuous floating 1492-year long tree-ring record. By cross-dating with bog-pine chronologies from Lower Saxony, Germany, the South Swedish record was assigned an absolute age of 5219-3728 BC. The cross-match between ring-width chronologies from these two regions, separated by 500-700 km, is remarkably strong and the correlation positive, which indicates that large-scale climate dynamics had a significant impact on the growth of bog pines during the Holocene Thermal Maximum (HTM) when bog-pine distribution reached a maximum in both regions. However, local population dynamics were also influenced by peatland ontogeny and competition, as shown by differences in replication and mean tree age between the Swedish and German records. Comparisons with chronologies developed from modern bog pines in southern Sweden indicate that more coherent climate was controlling pine growth on natural peatlands during warm periods in the past. This study demonstrates the usefulness of Swedish subfossil bog-pine material as a climate proxy, with particular potential for decadal- to centennial-scale reconstructions of humidity fluctuations. (C) 2011 Istituto Italiano di Dendrocronologia. Published by Elsevier GmbH. All rights reserved.

Avdelning/ar

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

Publiceringsår

2012

Språk

Engelska

Sidor

93-103

Publikation/Tidskrift/Serie

Dendrochronologia

Volym

30

Issue

2

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Geology

Nyckelord

  • Dendroclimatology
  • Scots pine
  • Raised bog
  • Holocene Thermal Maximum

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1125-7865