The unknown third – Hydrogen isotopes in tree-ring cellulose across Europe

Vitali, Valentina; Martínez-Sancho, Elisabet; Treydte, Kerstin; Andreu-Hayles, L.; Dorado‐Liñán, Isabel; Gutiérrez, Emília; Helle, Gerard; Leuenberger, Markus; Loader, Neil J.; Rinne‐Garmston, Katja; Schleser, Gerhard H.; Allen, Scott T.; Waterhouse, J.; Saurer, Matthias; Lehmann, Marco M.

doi:10.1016/j.scitotenv.2021.152281

Cited by 24 publications

(31 citation statements)

References 125 publications

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“…In Chap. 5, Helle et al (2022) evaluate the differences between wood and cellulose isotope ratios, with an overview of three methods for cellulose extraction and where they are best applied. Chapter 6 explains how to evaluate the quality of the isotopic measurements themselves, including how to estimate the accuracy and precision of isotopic data, and the process of calibrating isotope ratios to the international standard scales (Brooks et al 2022).…”

Section: Volume Summarymentioning

confidence: 99%

“…Chapter 6 explains how to evaluate the quality of the isotopic measurements themselves, including how to estimate the accuracy and precision of isotopic data, and the process of calibrating isotope ratios to the international standard scales (Brooks et al 2022). Chapter 7 describes new methodological developments for stable isotope analysis on both nonstructural carbohydrates and tree rings (Rinne-Garmston et al 2022). They review compound-specific isotope analysis of sugars and cyclitols, UV-laser aided sampling and isotopic analysis of tree rings, and position-specific isotope analysis of cellulose.…”

Section: Volume Summarymentioning

confidence: 99%

“…The VPD-driven leaf water 2 H-enrichment would also be lesser during the early growing season than in summer, which is again in contrast to the observed intra-annual δ 2 H NE pattern in leaf and tree-ring cellulose. It is likely, the intra-annual effects are caused by a higher relative use of 2 H-enriched storage pools for the formation of earlywood and consequently 2 H-depleted photosynthetic assimilates for the formation of late wood (Lehmann et al 2021;Vitali et al 2022). Cleary, the drivers of intra-annual isotope variation needs further exploration to provide better insights on seasonal changes in plant-water relations and physiology.…”

Section: Local δ 2 H Trc Pattern and Physio-biochemical Effectsmentioning

confidence: 99%

“…However, on a site where temperature was the growth-limiting factor, the relationship between δ 2 H TRC and TRW was slightly positive. Thus, further studies are needed to determine the driving factors of 2 H-fractionaions related to annual growth (Vitali et al 2022).…”

Section: Local δ 2 H Trc Pattern and Physio-biochemical Effectsmentioning

confidence: 99%

“…= robur in 2 H-fractionations. The influence of water availability on 2 H TRC would make sense, since growth sometimes depends on carbon storage and thus on 2 H-enriched heterotrophic starch rather than on 2 H-depleted sugars from recent photoassimilates, particularly in extreme dry years or during defoliation events (Vitali et al 2022). Thus, it is likely that the highly negative and positive 2 H TRC variations at the species and genus levels mainly reflect plastic 2 H-fractionations related to the carbohydrate metabolism in trees.…”

Section: Local δ 2 H Trc Pattern and Physio-biochemical Effectsmentioning

confidence: 99%

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Stable Isotopes in Tree Rings: Inferring Physiological, Climatic and Environmental Responses

Siegwolf

Brooks

Roden

et al. 2020

Preprint

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We are editing a new book in the Springer Tree Physiology Series entitled &#8220;Stable Isotopes in Tree Rings: Inferring Physiological, Climatic and Environmental Responses&#8221; due out in 2020. Because trees produce annual growth increments that can be precisely dated, annual and interannual variations in tree ring width and stable carbon, oxygen and hydrogen isotopes provide detailed records of past physiological responses to biotic and abiotic impacts over many decades and centuries. In contrast to non-living chronologies (ice cores, stalagmites etc.), trees modify base physical inputs in response to local microclimates through their physiological response to light, temperature, humidity, water availability, CO2 and nutrients. Although this can make interpretation of isotopic variation in organic matter more complicated, it also means that these proxies can provide a wealth of additional information. Thus, an understanding of the combined physical and biological drivers of isotope fractionation in tree rings is crucial for paleoclimate interpretation. In addition, tree rings and stable isotopes contained therein integrate dynamic environmental, phenological and developmental variation that can be used to study present organism function and recent anthropogenic influences apart from their use as proxies for conditions in the distant past. The last few decades have seen tremendous progress in understanding the mechanisms by which tree physiology modifies stable isotope fractionation in organic matter.This book will be the first to comprehensively cover the field of tree ring stable isotopes. This volume highlights how tree ring stable isotopes have been used to address a range of environmental issues from paleoclimatology to forest management, and anthropogenic impacts on forest growth. It evaluates strengths and weaknesses of isotope applications in tree rings. This book focuses on physiological mechanisms that influence isotopic signals and reflect environmental impacts. Each of the 25 chapters has been authored by leading experts providing the most recent developments in the area.

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Section: Volume Summarymentioning

confidence: 99%

Section: Volume Summarymentioning

confidence: 99%

Section: Local δ 2 H Trc Pattern and Physio-biochemical Effectsmentioning

confidence: 99%

Section: Local δ 2 H Trc Pattern and Physio-biochemical Effectsmentioning

confidence: 99%

Section: Local δ 2 H Trc Pattern and Physio-biochemical Effectsmentioning

confidence: 99%

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Stable Isotopes in Tree Rings: Inferring Physiological, Climatic and Environmental Responses

Siegwolf

Brooks

Roden

et al. 2020

Preprint

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Evidence for variations in cryogenic extraction deuterium biases of plant xylem water across foundational northeastern US trees

Sobota,

Li,

Hren

et al. 2024

Hydrological Processes

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Measurements of oxygen and hydrogen isotopes in plant xylem water (2H, 18O) have helped to redefine conceptual and numerical models of the hydrological cycle and understand how plants compete for subsurface water. Recent experiments have shown that Cryogenic Vacuum Extraction (CVE) of plant xylem water can result in a δ2H bias. We tested if CVE δ2H‐biases varied significantly across seven foundational northeastern US forest trees with a series of tree core rehydration experiments. Our analysis demonstrated that CVE δ2H‐biases were well predicted by sample gravimetric water content and varied significantly with tree species identity. We show that species‐level δ2H‐bias corrections can result in substantially different understandings of plant water uptake and transpiration versus uncorrected data or generic bias corrections. This research demonstrates an urgent need for the critical evaluation of CVE for plant water extraction. In the absence of a stronger understanding of CVE δ2H‐biases, we recommend that xylem water δ2H observations should not be used in plant water uptake studies.

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The Stable Hydrogen Isotopic Signature: From Source Water to Tree Rings

et al. 2022

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The hydrogen isotopic signature (δ2H) of water in trees contains information on plant functional responses to climatic changes and on the origin of the water. This is also true for the non-exchangeable hydrogen isotopic signature (δ2HNE) of plant organic matter, which contains additional physiological and biochemical information that can be dated to specific years if extracted from annual rings of trees. Despite this potential for gaining unique insights from δ2HNEof tree-ring cellulose (δ2HTRC), it has not been widely used compared to other isotope signals, likely due to challenging methodological constraints and interpretations of these isotopic signals. In this chapter, we first summarize hydrogen isotope (2H-) fractionation that occurs between source water and tree rings and review methods (e.g. nitration, equilibration, position-specific applications) and calculations to determine δ2HNE in tree material. Building upon a summary of the current state of knowledge, this chapter also provides an exhaustive synthesis of δ2HTRC papers, applications, and associated data from approximately 180 sites across the globe (paired with modelled precipitation δ2H values and climate data). The data allow us to investigate the hydrological-climatic effects driving δ2HTRC pattern on a global scale, the relationship of hydrogen with oxygen isotopes in the same tree-ring material, as well as the influence of physiological-biochemical effects (e.g., species differences, tree growth) that appear to be more important on local or temporal scales than on a large spatial scales. Thus, when local hydro-climatic influences on source water δ2H can be isolated, δ2HTRC gives novel insights on tree physiological responses to abiotic and biotic stresses. We conclude that the growing constellation of tree-ring metrics, including advancements in 2H-processing (i.e., equilibration techniques allowing rapid determinations of δ2HNE) and further refinements to the understanding of post-photosynthetic 2H-fractionations will together provide many new opportunities to understand past climates and ecophysiology by using δ2H in tree rings.

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The unknown third – Hydrogen isotopes in tree-ring cellulose across Europe

Cited by 24 publications

References 125 publications

Stable Isotopes in Tree Rings: Inferring Physiological, Climatic and Environmental Responses

Stable Isotopes in Tree Rings: Inferring Physiological, Climatic and Environmental Responses

Evidence for variations in cryogenic extraction deuterium biases of plant xylem water across foundational northeastern US trees

The Stable Hydrogen Isotopic Signature: From Source Water to Tree Rings

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