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Hans Linderson

Hans Linderson

Forskningsingenjör

Hans Linderson

Exploring climate forcing of growth depression in subfossil South Swedish bog pines using stable isotopes

Författare

  • Johannes Edvardsson
  • Thomas W. D. Edwards
  • Hans Linderson
  • Dan Hammarlund

Summary, in English

Comparison between growth variability, based on ring-width (RW) analysis, and moisture-sensitive signals in tree-ring carbon and oxygen stable-isotope composition provides increased understanding of how climate and hydrology influenced bog pines (Pinus sylvestris L) at two sites in southern Sweden during the mid- and late Holocene. Tree-ring sequences from two subfossil trees collected at raised bogs having different hydrology and catchment size were analyzed to probe the stable-isotope signals associated with two bog-wide episodes of growth depression, one during the Holocene Thermal Maximum and the other during the Neoglacial Transition. The occurrence of lower whole-wood delta C-13 and cellulose 813C and 8180 values immediately prior to the onset of growth depression in both trees, suggesting increased atmospheric relative humidity, is consistent with the notion that excessive effective moisture impeded tree growth. Correlation analysis indicates that the growth response lagged about three years behind the decline in delta C-13 and delta O-18 values in each tree, possibly reflecting relatively slow rise in the local water table in response to wetter climate. (c) 2013 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

2014

Språk

Engelska

Sidor

55-61

Publikation/Tidskrift/Serie

Dendrochronologia

Volym

32

Issue

1

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Geology

Nyckelord

  • Dendrochronology
  • Carbon isotopes
  • Oxygen isotopes
  • Peat bog
  • Holocene

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1125-7865