Trends In Elemental Concentrations of Tree Rings From the Siberian Arctic

Irina P. Panyushkina; Vladimir V. Shishov; Alexi M. Grachev; Anastasia A. Knorre; Alexander V. Kirdyanov; Steven W. Leavitt; Eugene A. Vaganov; Eugene P. Chebykin; Natalia A. Zhuchenko; Malcolm K. Hughes

doi:10.3959/1536-1098-72.02.67

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1 July 2016 Trends In Elemental Concentrations of Tree Rings From the Siberian Arctic

Author Affiliations +

Irina P. Panyushkina
Laboratory of Tree-Ring Research, University of Arizona, 1215 E. Lowell St., Tucson, AZ 85721, USA
Vladimir V. Shishov
Siberian Federal University, 79 Svobodniy Ave., Krasnoyarsk, 660041, Russia
Alexi M. Grachev
Institute of Geography, RAS, 29 Staromonetniy Pereulok, Moscow, 119017, Russia
Anastasia A. Knorre
Sukachev Institute of Forest SB RAS, Akademgorodok, Krasnoyarsk, 660036, Russia
Alexander V. Kirdyanov
Siberian Federal University, 79 Svobodniy Ave., Krasnoyarsk, 660041, Russia
Steven W. Leavitt
Laboratory of Tree-Ring Research, University of Arizona, 1215 E. Lowell St., Tucson, AZ 85721, USA
Eugene A. Vaganov
Siberian Federal University, 79 Svobodniy Ave., Krasnoyarsk, 660041, Russia
Eugene P. Chebykin, Natalia A. Zhuchenko
Limnological Institute SB RAS, 3 Ulan-Batorskaya St., Irkutsk, 664033, Russia
Malcolm K. Hughes
Laboratory of Tree-Ring Research, University of Arizona, 1215 E. Lowell St., Tucson, AZ 85721, USA

Tree-Ring Research, 72(2):67-77 (2016). https://doi.org/10.3959/1536-1098-72.02.67

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Abstract

The biogeochemistry and ecology of the Arctic environment have been heavily impacted by anthropogenic pollution and climate change. We used ICP-MS to measure concentrations of 26 elements in the AD 1300–2000 tree rings of larch from the Taymyr Peninsula in northern Siberia for studying the interaction between environmental change and wood chemistry. We applied a two-stage data reduction technique to identify trends in the noisy measurement data. Statistical assessment of variance of normalized time series reveals pronounced depletion of xylem Ca, Mg, Cl, Bi and Si concentrations and enrichment of P, K, Mn, Rb, Sr and Ba concentrations after ca. AD 1900. The trends are unprecedented in the 700-year records, but multiple mechanisms may be at work and difficult to attribute with certainty. The declining xylem Ca and Mg may be a response to soil acidification from air pollution, whereas increasing P, K, and Mn concentrations may signal changes in root efficiency and excess water-soluble minerals liberated by the permafrost thaw. The changes seem consistent with mounting stress on Arctic vegetation. This study supports the potential of tree rings for monitoring past and ongoing changes in biogeochemistry of Arctic ecosystems related to pollution and permafrost thaw.

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Irina P. Panyushkina, Vladimir V. Shishov, Alexi M. Grachev, Anastasia A. Knorre, Alexander V. Kirdyanov, Steven W. Leavitt, Eugene A. Vaganov, Eugene P. Chebykin, Natalia A. Zhuchenko and Malcolm K. Hughes "Trends In Elemental Concentrations of Tree Rings From the Siberian Arctic," Tree-Ring Research 72(2), (1 July 2016). https://doi.org/10.3959/1536-1098-72.02.67

Received: 4 March 2014; Accepted: 1 May 2016; Published: 1 July 2016

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