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Forests 2018, 9(6), 364; https://doi.org/10.3390/f9060364

Age-Effect on Intra-Annual δ13C-Variability within Scots Pine Tree-Rings from Central Siberia

1
Institute of Ecology and Geography, Siberian Federal University, Svobodny pr. 79, Krasnoyarsk 660041, Russia
2
V.N. Sukachev Institute of Forest SB RAS, Akademgorodok 50, bld. 28, Krasnoyarsk 660036, Russia
3
Institute of Biology I, University of Leipzig, Johannisallee 21–23, 04103 Leipzig, Germany
4
Max-Planck Institute of Biogeochemistry, Hans-Knöll-Straße 10, 07701 Jena, Germany
*
Author to whom correspondence should be addressed.
Received: 30 March 2018 / Revised: 3 June 2018 / Accepted: 4 June 2018 / Published: 19 June 2018
(This article belongs to the Special Issue Isotope Application in Forest Growth Assessment)
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Abstract

Intra-annual tree-ring parameters are increasingly used in dendroecology thanks to their high temporal resolution. To better understand the nature of intra-ring proxy signals, we compared old and young trees according to the different ways in which they respond to climate. The study was carried out in central Siberia (Russia, 60°75′ N, 89°38′ E) in two even-aged Pinus sylvestris L. stands of different ages (20 and 220 years). Ring width, cell size, and intra-annual δ¹³С were measured for 4 to 27 tree rings, depending on age group (young vs. old) and tree-ring parameter. Wood formation was monitored to link tree-ring position to its time of formation. Results indicated more distinct intra-annual δ¹³С patterns at both the beginning and end of the ring of young trees compared to old ones. Older trees showed a stronger significant correlation between δ¹³С across the ring border, indicating a stronger carry-over effect of the previous year’s growing conditions on current year wood production. This suggests that tree age/size influences the magnitude of the transfer of mobile carbon reserves across the years. View Full-Text
Keywords: boreal forest; Pinus sylvestris L.; carbon isotopes; wood anatomy; seasonal growth; climatic factors boreal forest; Pinus sylvestris L.; carbon isotopes; wood anatomy; seasonal growth; climatic factors
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Fonti, M.V.; Vaganov, E.A.; Wirth, C.; Shashkin, A.V.; Astrakhantseva, N.V.; Schulze, Е.-D. Age-Effect on Intra-Annual δ13C-Variability within Scots Pine Tree-Rings from Central Siberia. Forests 2018, 9, 364.

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