The dendroclimatic value of oak stable isotopes
| Autor: | Alexander Ač, Tomáš Kolář, Natálie Pernicová, Michal Rybníček, Otmar Urban, Mirek Trnka, Eva Koňasová, Ulf Büntgen |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
010504 meteorology & atmospheric sciences Ecology biology δ13C Stable isotope ratio δ18O Climate change Plant Science Dendroclimatology biology.organism_classification 01 natural sciences Quercus robur Fixation (population genetics) Isotopes of carbon Environmental science Physical geography 010606 plant biology & botany 0105 earth and related environmental sciences |
| Zdroj: | Dendrochronologia. 65:125804 |
| ISSN: | 1125-7865 |
| Popis: | Tree-ring stable oxygen and carbon isotope ratios (δ18O and δ13C) are an important archive for climate reconstructions. However, it remains unclear whether the polyvinyl acetate emulsion, often used for the preservation and fixation of wood samples, influences δ18O and δ13C signals. Further uncertainties are associated with the possible effects of geographical origin and cambial age of historical samples. Here, we present annually-resolved and absolutely-dated δ18O and δ13C measurements of 21 living oaks (Quercus robur and Q. petraea) from the Czech Republic. We find that the δ18O and δ13C signals in the extracted alpha-cellulose are not affected by polyvinyl acetate treatment. Covering the entire 20th century and reaching until 2018 CE, our dataset reveals spatial and temporal coherency within and between the individual δ18O and δ13C chronologies of different oak species, sample locations, and tree ages. Highly significant (p |
| Databáze: | OpenAIRE |
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