Insights into the subdaily variations in methane, nitrous oxide and carbon dioxide fluxes from upland tropical tree stems
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F25%3A00617769" target="_blank" >RIV/86652079:_____/25:00617769 - isvavai.cz</a>
Result on the web
<a href="https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.20401" target="_blank" >https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.20401</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/nph.20401" target="_blank" >10.1111/nph.20401</a>
Alternative languages
Result language
angličtina
Original language name
Insights into the subdaily variations in methane, nitrous oxide and carbon dioxide fluxes from upland tropical tree stems
Original language description
Recent studies have shown that stem fluxes, although highly variable among trees, can alter the strength of the methane (CH4) sink or nitrous oxide (N2O) source in some forests, but the patterns and magnitudes of these fluxes remain unclear. This study investigated the drivers of subdaily and seasonal variations in stem and soil CH4, N2O and carbon dioxide (CO2) fluxes. CH4, N2O and CO2 fluxes were measured continuously for 19 months in individual stems of two tree species, Eperua falcata (Aubl.) and Lecythis poiteaui (O. Berg), and surrounding soils using an automated chamber system in an upland tropical forest. Subdaily variations in these fluxes were related to environmental and stem physiological (sap flow and stem diameter variations) measurements under contrasting soil water conditions. The results showed that physiological and climatic drivers only partially explained the subdaily flux variations. Stem CH4 and CO2 emissions and N2O uptake varied with soil water content, time of day and between individuals. Stem fluxes decoupled from soil fluxes. Our study contributes to understanding the regulation of stem greenhouse gas fluxes. It suggests that additional variables (e.g. internal gas concentrations, wood-colonising microorganisms, wood density and anatomy) may account for the remaining unexplained variability in stem fluxes, highlighting the need for further studies.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10611 - Plant sciences, botany
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
New Phytologist
ISSN
0028-646X
e-ISSN
1469-8137
Volume of the periodical
245
Issue of the periodical within the volume
6
Country of publishing house
GB - UNITED KINGDOM
Number of pages
16
Pages from-to
2451-2466
UT code for WoS article
001399188700001
EID of the result in the Scopus database
2-s2.0-85215270445