Importance of tree diameter and species for explaining the temporal and spatial variations of xylem water delta O-18 and delta H-2 in a multi-species forest

Simple item page
dc.contributor.authorFresne, Maelleen
dc.contributor.authorChun, Kwok P.en
dc.contributor.authorHrachowitz, Markusen
dc.contributor.authorMcGuire, Kevin J.en
dc.contributor.authorSchoppach, Remyen
dc.contributor.authorKlaus, Julianen
dc.date.accessioned2023-06-26T12:40:37Zen
dc.date.available2023-06-26T12:40:37Zen
dc.date.issued2023-05en
dc.description.abstractIdentifying the vegetation and topographic variables influencing the isotopic variability of xylem water of forest vegetation remains crucial to interpret and predict ecohydrological processes in landscapes. In this study, we used temporally and spatially distributed xylem stable water isotopes measurements from two growing seasons to examine the temporal and spatial variations of xylem stable water isotopes and their relationships with vegetation and topographic variables in a Luxembourgish temperate mixed forest. Species-specific temporal variations of xylem stable water isotopes were observed during both growing seasons with a higher variability for beeches than oaks. Principal component regressions revealed that tree diameter at breast height explains up to 55% of the spatial variability of xylem stable water isotopes, while tree species explains up to 24% of the variability. Topographic variables had a marginal role in explaining the spatial variability of xylem stable water isotopes (up to 6% for elevation). During the drier growing season (2020), we detected a higher influence of vegetation variables on xylem stable water isotopes and a lower temporal variability of the xylem water isotopic signatures than during the wetter growing season (2019). Our results reveal the dominant influence of vegetation on xylem stable water isotopes across a forested area and suggest that their spatial patterns arise mainly from size- and species-specific as well as water availability-dependent water use strategies rather than from topographic heterogeneity. The identification of the key role of vegetation on xylem stable water isotopes has critical implications for the representativity of isotopes-based ecohydrological and catchments studies.en
dc.description.notesLuxembourg National Research Fund, Grant/Award Number: FNR/CORE/C17/SR/11702136/EFFECT; Accelerator Programme (AP) 2022-24; University of the West of England, Bristolen
dc.description.sponsorshipLuxembourg National Research Fund [FNR/CORE/C17/SR/11702136/EFFECT]; Accelerator Programme (AP) 2022-24; University of the West of England, Bristolen
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1002/eco.2545en
dc.identifier.eissn1936-0592en
dc.identifier.issn1936-0584en
dc.identifier.urihttp://hdl.handle.net/10919/115505en
dc.language.isoenen
dc.publisherWileyen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectprincipal componentsen
dc.subjectspatial autocorrelationen
dc.subjectstable water isotopesen
dc.subjecttopographyen
dc.subjecttranspirationen
dc.subjectvegetationen
dc.titleImportance of tree diameter and species for explaining the temporal and spatial variations of xylem water delta O-18 and delta H-2 in a multi-species foresten
dc.title.serialEcohydrologyen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
FresneImportance.pdf
Size:
2.49 MB
Format:
Adobe Portable Document Format
Description:
Published version
Download

Collections

Scholarly Works, Forest Resources and Environmental Conservation
Scholarly Works, Virginia Water Resources Research Center