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Isotopic Branchpoints: Linkages and Efficiencies in Carbon and Water Budgets

Marshall, John D and Laudon, Hjalmar and Makela, Annikki and Peichl, Matthias and Hasselquist, Niles and Näsholm, Torgny (2021). Isotopic Branchpoints: Linkages and Efficiencies in Carbon and Water Budgets. Journal of Geophysical Research: Biogeosciences. 126 , e2020JG006043
[Research article]

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Abstract

Forests pass water and carbon through while converting portions to streamflow, soil organic matter, wood production, and other ecosystem services. The efficiencies of these transfers are but poorly quantified. New theory and new instruments have made it possible to use stable isotope composition to provide this quantification of efficiencies wherever there is a measurable difference between the branches of a branchpoint. We present a linked conceptual model that relies on isotopes of hydrogen, carbon, and oxygen to describe these branchpoints along the pathway from precipitation to soil and biomass carbon sequestration and illustrate how it can be tested and generalized.Plain Language Summary The way a forest works can be described in terms of carbon and water budgets, which describe the ways that carbon and water flow through the forest. The paths of such flows are frequently branched and the branches are often different in their stable isotope composition. This means that stable isotopes can be used to describe the branching events. We present isotopic methods of quantifying several such events, then link them in a chain that begins with the evaporation of water and ends with biomass production.

Authors/Creators:Marshall, John D and Laudon, Hjalmar and Makela, Annikki and Peichl, Matthias and Hasselquist, Niles and Näsholm, Torgny
Title:Isotopic Branchpoints: Linkages and Efficiencies in Carbon and Water Budgets
Series Name/Journal:Journal of Geophysical Research: Biogeosciences
Year of publishing :2021
Volume:126
Article number:e2020JG006043
Number of Pages:6
Publisher:AMER GEOPHYSICAL UNION
ISSN:2169-8953
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Keywords:carbon-use efficiency, ecosystem model, eddy covariance, photosynthesis, transpiration, water-use efficiency
URN:NBN:urn:nbn:se:slu:epsilon-p-110695
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-110695
Additional ID:
Type of IDID
DOI10.1029/2020JG006043
Web of Science (WoS)000613329800006
ID Code:22634
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Forest Ecology and Management
Deposited By: SLUpub Connector
Deposited On:22 Feb 2021 09:43
Metadata Last Modified:22 Feb 2021 09:51

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