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  Drought impact on water use efficiency and intra-annual density fluctuations in Erica arborea on Elba (Italy)

Battipaglia, G., Micco, V. D., Brand, W. A., Saurer, M., Aronne, G., Linke, P., et al. (2014). Drought impact on water use efficiency and intra-annual density fluctuations in Erica arborea on Elba (Italy). Plant, Cell and Environment, 37(2), 382-391. doi:10.1111/pce.12160.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0014-444C-1 Version Permalink: https://hdl.handle.net/21.11116/0000-000A-446B-2
Genre: Journal Article

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http://onlinelibrary.wiley.com/wol1/doi/10.1111/pce.12160/abstract (Publisher version)
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 Creators:
Battipaglia, Giovanna, Author
Micco, Veronica De, Author
Brand, Willi A.1, Author           
Saurer, Matthias, Author
Aronne, Giovanna, Author
Linke, Petra1, Author           
Cherubini, Paolo, Author
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1Service Facility Stable Isotope, Dr. W. A. Brand, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497772              

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 Abstract: Erica arborea (L) is a widespread Mediterranean species, able to cope with water stress and colonize semiarid environments. The eco-physiological plasticity of this species was evaluated by studying plants growing at two sites with different soil moistures on the island of Elba (Italy), through dendrochronological, wood-anatomical analyses and stable isotopes measurements. Intra-annual density fluctuations (IADFs) were abundant in tree rings, and were identified as the key parameter to understand site-specific plant responses to water stress. Our findings showed that the formation of IADFs is mainly related to the high temperature, precipitation patterns and probably to soil water availability, which differs at the selected study sites. The recorded increase in the 13C-derived intrinsic water use efficiency at the IADFs level was linked to reduced water loss rather than to increasing C assimilation. The variation in vessel size and the different absolute values of δ18O among trees growing at the two study sites underlined possible differences in stomatal control of water loss and possible differences in sources of water uptake. This approach not only helped monitor seasonal environmental differences through tree-ring width, but also added valuable information on E. arborea responses to drought and their ecological implications for Mediterranean vegetation dynamics.

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 Dates: 20132013-08-132014
 Publication Status: Issued
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 Identifiers: Other: BGC1863
DOI: 10.1111/pce.12160
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Title: Plant, Cell and Environment
Source Genre: Journal
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Publ. Info: Oxford, England : Blackwell Science
Pages: - Volume / Issue: 37 (2) Sequence Number: - Start / End Page: 382 - 391 Identifier: ISSN: 0140-7791
CoNE: https://pure.mpg.de/cone/journals/resource/954925471334