Zobrazeno 1 - 10 of 18 pro vyhledávání: '"Boaz Hilman"'
1
Differences between tree stem CO 2 efflux and O 2 influx rates cannot be explained by internal CO 2 transport or storage in large beech trees
Autor: Juliane Helm, Roberto L. Salomón, Boaz Hilman, Jan Muhr, Alexander Knohl, Kathy Steppe, Yves Gibon, Cédric Cassan, Henrik Hartmann
Publikováno v: Plant, Cell and Environment
Plant, Cell and Environment, 2023, Online first, ⟨10.1111/pce.14614⟩
International audience; Tree stem respiration (R S) is a substantial component of the forest carbon balance. The mass balance approach uses stem CO 2 efflux and internal xylem fluxes to sum up R S , while the oxygen-based method assumes O 2 influx as
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4599843c28df0b98b9379568ec0faba
https://doi.org/10.1111/pce.14614
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2
Increased belowground tree carbon allocation in a mature mixed forest in a dry vs. a wet year
Autor: Ido Rog, Boaz Hilman, Hagar Fox, Shifra Avital, Tamir Klein
Climate change is expected to increase the frequency and severity of droughts in Mediterranean forests. Tree survival and storage of atmospheric CO2 in these forests depend on how individual tree species allocate their carbon (C). Here, we measured a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e188243222dc10ac8c3220e864253194
https://doi.org/10.5194/egusphere-egu23-5745
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3
Carbon and nitrogen exchange between trees and mycorrhizal fungi at treeline ecotone
Autor: Boaz Hilman, Emily Solly, Ivano Brunner, Susan Trumbore, Frank Hagedorn
The formation of high elevation treelines is thought to result from direct low-temperature growth limitation, but the in-direct role of nitrogen (N) in modifying growth has rarely been evaluated. Slow N mineralization rates in cold soils may push tre
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::447612d6da1d837a819b3e8f1830ab57
https://doi.org/10.5194/egusphere-egu23-5410
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4
Observed and modelled stem respiration CO2 and O2 fluxes in mature beech trees
Autor: Juliane Helm, Roberto Salomón, Jan Muhr, Kathy Steppe, Boaz Hilman, Henrik Hartmann
We lack a detailed understanding of tree carbon flux dynamics to quantify stem respiration correctly. Stem CO2 radial diffusivity and vertical CO2 transport with the xylem sap produce uncertainties in respiration estimates based on stem CO2 efflux me
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b472810ce230262f4968398dee120817
https://doi.org/10.5194/egusphere-egu22-4213
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5
Role of storage reserves in new tissue growth quantified using bomb 14C at the alpine treeline
Autor: Boaz Hilman, Emily Solly, Frank Hagedorn, Iris Kuhlman, David Herrera-Ramírez, Susan Trumbore
The bomb radiocarbon approach allows to estimate the time elapsed since carbon (C) fixation and thus to study the use of stored C. Previous studies show that fine roots (≤ 2 mm), a large and dynamic C pool in trees, are constructed from C that was
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::021c11fc25b40f79866731c4357c8273
https://doi.org/10.5194/egusphere-egu22-1931
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7
Using respiration quotients to track changing sources of soil respiration seasonally and with experimental warming
Autor: Margaret S. Torn, Boaz Hilman, Caitlin E. Hicks Pries, Cristina Castanha, Alon Angert
Publikováno v: Biogeosciences, vol 17, iss 12
Biogeosciences
Biogeosciences, Vol 17, Pp 3045-3055 (2020)
Developing a more mechanistic understanding of soil respiration is hampered by the difficulty in determining the contribution of different organic substrates to respiration and in disentangling autotrophic-versus-heterotrophic and aerobic-versus-anae
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5129cf208ee0c470dbac09a7b15bb64f
https://doi.org/10.5194/bg-17-3045-2020
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8
Radiocarbon constraints on carbon cycling in plants and soils
Autor: Sophie F. von Fromm, Carlos A. Sierra, Jeffrey Beem-Miller, James T. Randerson, Susan E. Trumbore, Shane Stoner, Alison M. Hoyt, Zheng Shi, Boaz Hilman
Publikováno v: EGUsphere
Tracing ‘bomb’ radiocarbon produced by atmospheric testing of atomic weapons through vegetation and soils provides information of the dynamics of terrestrial carbon cycling on timescales of years to centuries. Processes operating on these timesca
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::961bbbdcea19b1a750a8e278563bbb7a
https://doi.org/10.5194/egusphere-egu21-13298
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9
Variability of the Apparent Respiratory Quotient of a forest Soils and Tree Stems
Autor: Alon Angert, Boaz Hilman, Tom Haran, Tal Weiner
The CO2/O2 fluxes ratio (ARQ) measured in soils and plants contains valuable information about the respiratory-substrate stoichiometry and biotic and abiotic non-respiratory p...
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::510ea8369f9a2bc54e3260df058fa114
https://doi.org/10.1002/essoar.10506181.1
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10
Low-cost chamber design for simultaneous CO2 and O2 flux measurements between tree stems and the atmosphere
Autor: David Herrera Ramírez, Jan Muhr, Henrik Hartmann, Boaz Hilman, Juliane Helm, Martin Göbel
Publikováno v: Tree Physiology
Tree stem CO2 efflux is an important component of ecosystem carbon fluxes and has been the focus of many studies. While CO2 efflux can easily be measured, a growing number of studies have shown that it is not identical with actual in situ respiration
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f49e83bd5bf5f35f017bba5c29e0dc57
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