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Pflug EE, Siegwolf R, Buchmann N, Dobbertin M, Kuster TM, Günthardt-Goerg MS, Arend M. Growth cessation uncouples isotopic signals in leaves and tree rings of drought-exposed oak trees. TREE PHYSIOLOGY 2015; 35:1095-1105. [PMID: 26377873 DOI: 10.1093/treephys/tpv079] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 07/15/2015] [Indexed: 06/05/2023]
Abstract
An increase in temperature along with a decrease in summer precipitation in Central Europe will result in an increased frequency of drought events and gradually lead to a change in species composition in forest ecosystems. In the present study, young oaks (Quercus robur L. and Quercus petraea (Matt.) Liebl.) were transplanted into large mesocosms and exposed for 3 years to experimental warming and a drought treatment with yearly increasing intensities. Carbon and oxygen isotopic (δ(13)C and δ(18)O) patterns were analysed in leaf tissue and tree-ring cellulose and linked to leaf physiological measures and tree-ring growth. Warming had no effect on the isotopic patterns in leaves and tree rings, while drought increased δ(18)O and δ(13)C. Under severe drought, an unexpected isotopic pattern, with a decrease in δ(18)O, was observed in tree rings but not in leaves. This decrease in δ(18)O could not be explained by concurrent physiological analyses and is not supported by current physiological knowledge. Analysis of intra-annual tree-ring growth revealed a drought-induced growth cessation that interfered with the record of isotopic signals imprinted on recently formed leaf carbohydrates. This missing record indicates isotopic uncoupling of leaves and tree rings, which may have serious implications for the interpretation of tree-ring isotopes, particularly from trees that experienced growth-limiting stresses.
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Affiliation(s)
- Ellen E Pflug
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Zürcherstrasse 111, CH-8903 Birmensdorf, Switzerland Department of Environmental Systems Science, ETH Zurich, Universitätsstrasse 2, CH-8092 Zurich, Switzerland
| | - R Siegwolf
- Department of Environmental Systems Science, ETH Zurich, Universitätsstrasse 2, CH-8092 Zurich, Switzerland Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
| | - N Buchmann
- Department of Environmental Systems Science, ETH Zurich, Universitätsstrasse 2, CH-8092 Zurich, Switzerland
| | - M Dobbertin
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Zürcherstrasse 111, CH-8903 Birmensdorf, Switzerland
| | - T M Kuster
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Zürcherstrasse 111, CH-8903 Birmensdorf, Switzerland Department of Environmental Systems Science, ETH Zurich, Universitätsstrasse 2, CH-8092 Zurich, Switzerland Institute for Plant Production Sciences, Agroscope, CH-8820 Wädenswil, Switzerland
| | - M S Günthardt-Goerg
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Zürcherstrasse 111, CH-8903 Birmensdorf, Switzerland
| | - M Arend
- Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Zürcherstrasse 111, CH-8903 Birmensdorf, Switzerland
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Offermann C, Ferrio JP, Holst J, Grote R, Siegwolf R, Kayler Z, Gessler A. The long way down--are carbon and oxygen isotope signals in the tree ring uncoupled from canopy physiological processes? TREE PHYSIOLOGY 2011; 31:1088-102. [PMID: 21957095 DOI: 10.1093/treephys/tpr093] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The carbon (δ(13)C) and oxygen (δ(18)O) stable isotope composition is widely used to obtain information on the linkages between environmental drivers and tree physiology over various time scales. The tree-ring archive can especially be exploited to reconstruct inter- and intra-annual variation of both climate and physiology. There is, however, a lack of information on the processes potentially affecting δ(13)C and δ(18)O on their way from assimilation in the leaf to the tree ring. As a consequence, the aim of this study was to trace the isotope signals in European beech (Fagus sylvatica L.) from leaf water (δ(18)O) and leaf assimilates (δ(13)C and δ(18)O) to tree-ring wood via phloem-transported compounds over a whole growing season. Phloem and leaf samples for δ(13)C and δ(18)O analyses as well as soil water, xylem water, leaf water and atmospheric water vapour samples for δ(18)O analysis were taken approximately every 2 weeks during the growing season of 2007. The δ(13)C and δ(18)O samples from the tree rings were dated intra-annually by monitoring the tree growth with dendrometers. δ(18)O in the phloem organic matter and tree-ring whole wood was not positively related to leaf water evaporative enrichment and δ(18)O of canopy organic matter pools. This finding implies a partial uncoupling of the tree-ring oxygen isotopic signal from canopy physiology. At the same time, internal carbon storage and remobilization physiology most likely prevented δ(13)C in tree-ring whole wood from being closely related to intra-annual variation in environmental drivers. Taking into account the post-photosynthetic isotope fractionation processes resulting in alterations of δ(13)C and δ(18)O not only in the tree ring but also in phloem carbohydrates, as well as the intra-annual timing of changes in the tree internal physiology, might help to better understand the meaning of the tree-ring isotope signal not only intra- but also inter-annually.
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Affiliation(s)
- Christine Offermann
- Centre for Systems Biology (ZBSA), University of Freiburg, Habsburgerstr. 49, D-79104 Freiburg, Germany
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Gagen M, McCarroll D, Loader NJ, Robertson I. Stable Isotopes in Dendroclimatology: Moving Beyond ‘Potential’. DENDROCLIMATOLOGY 2011. [DOI: 10.1007/978-1-4020-5725-0_6] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Liu X, Shao X, Wang L, Liang E, Qin D, Ren J. Response and dendroclimatic implications ofδ13C in tree rings to increasing drought on the northeastern Tibetan Plateau. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2007jg000610] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Roden JS, Bowling DR, McDowell NG, Bond BJ, Ehleringer JR. Carbon and oxygen isotope ratios of tree ring cellulose along a precipitation transect in Oregon, United States. ACTA ACUST UNITED AC 2005. [DOI: 10.1029/2005jg000033] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- John S. Roden
- Department of Biology; Southern Oregon University; Ashland Oregon USA
| | - David R. Bowling
- Stable Isotope Ratio Facility for Environmental Research, Department of Biology; University of Utah; Salt Lake City Utah USA
| | - Nate G. McDowell
- Department of Forest Science; Oregon State University; Corvallis Oregon USA
| | - Barbara J. Bond
- Department of Forest Science; Oregon State University; Corvallis Oregon USA
| | - James R. Ehleringer
- Stable Isotope Ratio Facility for Environmental Research, Department of Biology; University of Utah; Salt Lake City Utah USA
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Pawelczyk S, Pazdur A, Halas S. Stable carbon isotopic composition of tree rings from a pine tree from Augustów Wilderness, Poland, as a temperature and local environment conditions indicator. ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES 2004; 40:145-154. [PMID: 15223667 DOI: 10.1080/10256010410001671032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Tree rings can be used as archives of climatic and environmental data with annual resolution. Tree rings widths, maximum late wood density and other parameters as stable composition in tree rings can be used for the reconstruction of past climatic and environmental changes. Stable carbon isotope ratios in tree rings may provide valuable information on past climatic conditions. 13C/12C ratios of plant organic matter can reflect corresponding 13C/12C ratio of atmospheric CO2 during formation of the rings. Investigations of isotopic carbon composition in tree rings from in the ecologically clean the Augustów Wilderness region in the north-eastern part of Poland (22 degrees 58'E, 53 degrees 51'N) (nowadays a sanctuary) were undertaken. Series of delta13C in alpha-cellulose and in wholewood were acquired. Those measurements constituted a part of more complex investigations of carbon isotope composition in tree rings including the measurements of radiocarbon concentration and tree ring widths. This article presents preliminary results. It is argued that contrary to the tree ring widths and delta13C in wholewood that do not reveal significant correlation with temperature, the variation of delta13C in the latewood alpha-cellulose is correlated with combined July and August temperatures.
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Affiliation(s)
- Slawomira Pawelczyk
- Department of Radioisotopes Institute of Physics, Silesian University of Technology Krzywoustego 2 44-100 Gliwice Poland
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Chapter 13 Trace metals in tree rings: what do they tell us? TRACE ELEMENTS — THEIR DISTRIBUTION AND EFFECTS IN THE ENVIRONMENT 2000. [DOI: 10.1016/s0927-5215(00)80016-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Anderson WT, Bernasconi SM, McKenzie JA, Saurer M. Oxygen and carbon isotopic record of climatic variability in tree ring cellulose (Picea abies): An example from central Switzerland (1913-1995). ACTA ACUST UNITED AC 1998. [DOI: 10.1029/1998jd200040] [Citation(s) in RCA: 103] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Robertson I, Switsur VR, Carter AHC, Barker AC, Waterhouse JS, Briffa KR, Jones PD. Signal strength and climate relationships in13C/12C ratios of tree ring cellulose from oak in east England. ACTA ACUST UNITED AC 1997. [DOI: 10.1029/97jd01226] [Citation(s) in RCA: 121] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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