globalchange  > 气候减缓与适应
DOI: 10.1007/s10533-017-0411-0
Scopus记录号: 2-s2.0-85040027908
论文题名:
Stable calcium isotope speciation and calcium oxalate production within beech tree (Fagus sylvatica L.) organs
作者: Schmitt A.-D.; Borrelli N.; Ertlen D.; Gangloff S.; Chabaux F.; Osterrieth M.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 137, 期:2018-01-02
起始页码: 197
结束页码: 217
语种: 英语
英文关键词: Beech tree ; Ca isotopes ; Ca-oxalate crystals ; Ca-soluble ; Ca-structurally bound ; FTIR
Scopus关键词: bark ; biomineralization ; calcium ; chemical bonding ; crystal ; deciduous tree ; FTIR spectroscopy ; leachate ; leaching ; leaf ; oxalate ; Fagus ; Fagus sylvatica
英文摘要: In this study, we linked Ca speciation with isotope composition in plants. To do this, we performed leachate experiments to access the soluble Ca, structurally bound Ca and insoluble Ca (i.e., water and weak acid resistant) within beech tree organs (Fagus sylvatica L.). Ca isotopic measurements were combined with infrared spectroscopy and calcium oxalate biomineralization identification. The results from our study indicate that bark and leaves are the most enriched in monohydrated calcium oxalate crystals (whewellite), which are observable in parenchyma and sclerenchyma tissues, whereas roots and wood are enriched in structurally bound Ca. Our leaching experiments also show decreasing δ44/40Ca isotopic signatures in the order of soluble Ca > structurally bound Ca > insoluble Ca. This finding implies that because leaves degrade faster than wooden organs and because Ca linked to pectate decomposes faster than Ca linked to oxalate crystals, differential Ca isotopic signatures are expected to be observed during litter degradation. © 2018, Springer International Publishing AG, part of Springer Nature.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83194
Appears in Collections:气候减缓与适应
气候变化事实与影响

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作者单位: Université de Strasbourg, CNRS-UMR 7517, LHyGeS/EOST, 1, rue Blessig, Strasbourg Cedex, France; Instituto de Geología de Costas y del Cuaternario, FCEyN, UNMdP-CIC, CC722 (7600), Mar del Plata, Buenos Aires, Argentina; Instituto de Investigaciones Marinas y Costeras, CONICET-UNMdP, Mar del Plata, Buenos Aires, Argentina; Université de Strasbourg, CNRS-UMR 7362, Image, Ville, Environnement, 3, rue de l’Argonne, Strasbourg, France

Recommended Citation:
Schmitt A.-D.,Borrelli N.,Ertlen D.,et al. Stable calcium isotope speciation and calcium oxalate production within beech tree (Fagus sylvatica L.) organs[J]. Biogeochemistry,2018-01-01,137(2018-01-02)
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