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Leaf inclination angle and foliage clumping in an evergreen broadleaf Eucalyptus forest under elevated atmospheric CO2
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SYSNO ASEP 0559309 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Leaf inclination angle and foliage clumping in an evergreen broadleaf Eucalyptus forest under elevated atmospheric CO2 Author(s) Pisek, J. (EE)
Řezníčková, Ladislava (UEK-B) RID, SAI
Adamson, K. (EE)
Ellsworth, D. S. (AU)Number of authors 4 Source Title Australian Journal of Botany. - : CSIRO Publishing - ISSN 0067-1924
Roč. 69, č. 8 (2021), s. 622-629Number of pages 7 s. Language eng - English Country AU - Australia Keywords Eucalpytus woodland ; EucFACE ; foliage clumping ; free-air CO2 enrichment ; hemispherical photography ; leaf angle distribution ; leveled digital photography ; optical canopy instrumentation Subject RIV EF - Botanics OECD category Plant sciences, botany Method of publishing Limited access Institutional support UEK-B - RVO:86652079 UT WOS 000710105200001 EID SCOPUS 85117764205 DOI 10.1071/BT21035 Annotation How leaves are presented affects interaction of atmospheric CO2, energy (light), and plant physiology. Plant productivity is primarily determined by the amount of leaf area, leaf orientation and distribution in space. Not much attention has been paid to possible changes in leaf orientation and distribution with elevated CO2, but its effect on plant growth could alter the proportions of sunlit and shaded leaf areas and feedback on carbohydrate available for further growth. We report on first measurements of leaf inclination angle distribution and foliage clumping in a native evergreen Eucalyptus woodland in ambient CO2 and under +150 ppm elevated CO2. We found that a spherical leaf angle distribution was not an appropriate supposition for present species (Eucalyptus tereticornis Sm.) at this site. Our measurements of leaf inclination angles from imagery indicated an erectophile, highly skewed unimodal leaf inclination angle distribution function. We conclude that despite the measured steeper angles under elevated CO2 concentrations, the leaf angle change is not significant and falls within the expected natural variability and uncertainties connected with the measurement method. The lack of a clear response of leaf orientation and foliage clumping to elevated CO2 concentration indicates that the previously produced datasets of leaf inclination angles and foliage clumping maps with Earth observation data may be suitable while modelling carbon and water cycles under climate change. Workplace Global Change Research Institute Contact Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Year of Publishing 2023 Electronic address https://www.publish.csiro.au/bt/BT21035
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