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Journal Article

Age-effect on intra-annual delta13C-variability within scots pine tree-rings from Central Siberia

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Schulze,  Ernst Detlef
Emeritus Group, Prof. E.-D. Schulze, Max Planck Institute for Biogeochemistry, Max Planck Society;

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Citation

Fonti, M. V., Vaganov, E. A., Wirth, C., Shashkin, A. V., Astrakhantseva, N. V., & Schulze, E. D. (2018). Age-effect on intra-annual delta13C-variability within scots pine tree-rings from Central Siberia. Forests, 9(6): 364. doi:10.3390/f9060364.


Cite as: https://hdl.handle.net/21.11116/0000-0001-DD8C-9
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, 60750 N, 89380 E) in two even-aged Pinus sylvestris L. stands of different ages (20 and 220 years). Ring width, cell size, and intra-annual 13C 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 13C 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 13C 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.