Carbon and Oxygen Isotope Dendrochronology in Sub-Fossil Bog Oak Tree Rings - A Preliminary Study

Sass, U.G.W.; Poole, Imogen; Wils, Tommy H. G.; Helle, Gerhard; Schleser, Gerhard H.; Bergen, PF van

doi:10.1163/22941932-90001607

Cited by 19 publications

(11 citation statements)

References 48 publications

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“…Therefore, tree‐ring δ 13 C reflects those environmental factors. In a water‐limited ecosystem such as southern boreal forests in eastern Siberia, water availability is considered the most important factor controlling tree‐ring δ 13 C (Kagawa et al, ; Sass‐Klaassen et al, ; Tei, Sugimoto, Yonenobu, Hoshino, et al, ; Tei, Sugimoto, Yonenobu, Yamazaki, et al, ; Tei et al, , ). However, it is also expected that growing season temperature and/or solar radiation largely affect tree‐ring δ 13 C values through changes in the leaf assimilation rate in temperature‐limited ecosystems (e.g., Kirdyanov et al, ).…”

Section: Discussionmentioning

confidence: 99%

Radial Growth and Physiological Response of Coniferous Trees to Arctic Amplification

et al. 2017

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We describe the physiological responses of boreal conifers to climate change for the past 112 years using ring‐width and carbon isotope ratio (δ13C) chronologies at six forest sites in northern Eurasia and Canada. Responses differed among regions, depending on their climatic and/or geographic characteristics. Tree radial growth decreased over the past 52 years in central eastern Siberia with the higher rate of summer temperature increase than other regions, as indicated by the negative correlation between radial growth and summer temperature, but increased in northern Europe and Canada. Changes in tree‐ring δ13C indicated that recent climatic conditions have induced stronger drought stress for trees from central eastern Siberia than for those from other regions. The observed tree growth trends were compared to those simulated using a dynamic global vegetation model. Although the modeled annual net primary production (NPP) for trees generally exhibited similar decadal variation to radial growth, simulations did not show a recent decrease in tree growth, even in central eastern Siberia. This was probably due to an overestimation of the sensitivity of modeled tree NPP to precipitation. Our results suggest that the tree NPP forecasted under the expected future increases in temperature and average precipitation might be overestimated, especially in severely dry regions such as central eastern Siberia.

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Section: Discussionmentioning

confidence: 99%

Radial Growth and Physiological Response of Coniferous Trees to Arctic Amplification

et al. 2017

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“…Stable carbon isotope compositions in tree rings provide information on plant physiological conditions [e.g., McCarroll and Loader , ]. Under a warm and dry condition, the ratio (δ 13 C) reflects seasonal and annual variations in moisture condition [ Leavitt and Long , ; Treydte et al ., ; Sass‐Klaassen et al ., ; Sidorova et al ., ]. Previous studies in eastern Siberia reported negative correlations between larch tree ring δ 13 C and hydrological conditions such as precipitation, relative humidity, and soil moisture [ Kagawa et al ., ; Kirdyanov et al ., ; Sidorova et al ., ; Tei et al ., ].…”

Section: Introductionmentioning

confidence: 99%

Reconstruction of soil moisture for the past 100 years in eastern Siberia by using δ¹³C of larch tree rings

et al. 2013

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A stable carbon isotope ratio (δ13C) chronology for the past 100 years was developed from larch tree rings in eastern Siberia (near Yakutsk, 62°14′N, 129°37′E), to reconstruct past soil moisture water equivalent (SWE). Based on the correlation analyses between SWE and tree ring δ13C, we developed a linear regression model for SWE in the late growing period (LGP: 15 July to 31 August) using annual tree ring δ13C, which was calculated from the combination of latewood in a current year and earlywood in the following year, and then reconstructed SWE (LGP) for 1908–2007. Reconstructed SWE was compared with factors such as the output of the land surface model, annual precipitation, and Palmer Drought Severity Index for July. From the results, the reconstructed SWE appears reasonable and shows a large variation, including repeated occurrences of severe drought and an unprecedented high soil moisture event in 2006–2007 during the past 100 years. The reconstruction also captured a past documented record of severe drought in the 1940s. Despite the generally good performance of the reconstruction, by the 1930s the estimated SWE was higher than that expected from the annual precipitation. Tree ring width and δ13C were negatively correlated in most periods. However, the negative correlation was weaker for the period from 1919 to 1925, when relatively low air temperature was observed. This result suggests that the rate of photosynthesis, together with the degree of stomata opening, also affected the tree ring δ13C during cool periods.

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“…Moreover, lignin is transformed while its decomposition progresses and this leads to considerable fluctuations in its isotopic content (Schleser et al , 1999 and Harlow et al , 2006). On the other hand, a disadvantageous factor for conducting the isotope research on cellulose is the faster rate of its decay which results in the depletion in this organic compound in subfossil wood (Loader et al , 2003 and Sass-Klaassen et al , 2005).…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Stable carbon isotope analysis of subfossil wood from Austrian Alps

Kłusek

Pawełczyk

2014

Geochronometria

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Abstract:The presented studies were carried out in order to check the usefulness of subfossil wood for stable isotope analysis. The aim of research was also to define the optimal method of subfossil samples preparation. Subfossil samples used during the presented studies are a part of the multicentury dendrochronological scale. This chronology originates in an area situated around a small mountain lake -Schwarzersee, in Austria. The obtained results of stable carbon isotope measurements confirmed that the method of α-cellulose extraction by the application of acidic sodium chlorite and sodium hydroxide solutions removes resins and other mobile compounds from wood. Therefore, in the case of the analysed samples, the additional chemical process of extractives removing was found to be unnecessary. Studied wood samples contained an adequate proportion of α-cellulose similar to the values characteristic for the contemporary trees. This proved an adequate wood preservation which is essential for the conduction of isotopic research.

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Carbon and Oxygen Isotope Dendrochronology in Sub-Fossil Bog Oak Tree Rings - A Preliminary Study

Cited by 19 publications

References 48 publications

Radial Growth and Physiological Response of Coniferous Trees to Arctic Amplification

Radial Growth and Physiological Response of Coniferous Trees to Arctic Amplification

Reconstruction of soil moisture for the past 100 years in eastern Siberia by using δ¹³C of larch tree rings

Stable carbon isotope analysis of subfossil wood from Austrian Alps

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Carbon and Oxygen Isotope Dendrochronology in Sub-Fossil Bog Oak Tree Rings - A Preliminary Study

Cited by 19 publications

References 48 publications

Radial Growth and Physiological Response of Coniferous Trees to Arctic Amplification

Radial Growth and Physiological Response of Coniferous Trees to Arctic Amplification

Reconstruction of soil moisture for the past 100 years in eastern Siberia by using δ13C of larch tree rings

Stable carbon isotope analysis of subfossil wood from Austrian Alps

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Reconstruction of soil moisture for the past 100 years in eastern Siberia by using δ¹³C of larch tree rings