Articles | Volume 20, issue 3
https://doi.org/10.5194/bg-20-619-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-20-619-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
06 Feb 2023
Research article |
| 06 Feb 2023
| 06 Feb 2023
Seasonal variation of mercury concentration of ancient olive groves of Lebanon
Nagham Tabaja
University of Montpellier, UMR 5554 CNRS/IRD/EPHE, CC061 Montpellier, France
Faculty of Agronomy, Plant Production Department, The Lebanese
University, Dekwaneh, Lebanon
Plateforme de Recherche et d'Analyses en Sciences de
l'Environnement (PRASE), Ecole Doctorale de Sciences et Technologie,
Université Libanaise, Hadath, Lebanon
David Amouroux
Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM), Université de Pau et des Pays de l'Adour, E2S/UPPA, CNRS, PAU, France
Lamis Chalak
Faculty of Agronomy, Plant Production Department, The Lebanese
University, Dekwaneh, Lebanon
François Fourel
UMR CNRS 5023 LEHNA, Université Claude Bernard Lyon 1,
Villeubanne, France
Emmanuel Tessier
Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM), Université de Pau et des Pays de l'Adour, E2S/UPPA, CNRS, PAU, France
Ihab Jomaa
Department of Irrigation and Agrometeorology, Lebanese Agricultural
Research Institute (LARI), P.O. Box 287, Zahle, Lebanon
Milad El Riachy
Department of Olive and Olive Oil, Lebanese Agricultural Research
Institute (LARI), P.O. Box 287, Zahle, Lebanon
Ilham Bentaleb
CORRESPONDING AUTHOR
University of Montpellier, UMR 5554 CNRS/IRD/EPHE, CC061 Montpellier, France
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Biogeosciences, 19, 2671–2681, https://doi.org/10.5194/bg-19-2671-2022, https://doi.org/10.5194/bg-19-2671-2022, 2022
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We analysed the oxygen isotope composition of bones and teeth of four marine species possessing regional heterothermies. We observed a consistent link between oxygen isotope composition and temperature heterogeneities recorded by classical methods. This opens up new perspectives on the determination of the thermoregulatory strategies of extant marine vertebrates where conventional methods are difficult to apply, but also allows us to investigate thermophysiologies of extinct vertebrates.
Christoph Lécuyer, François Atrops, François Fourel, Jean-Pierre Flandrois, Gilles Pinay, and Philippe Davy
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Located in the French Southern Alps, the Cerveyrette valley constitutes a watershed of about 100 km2. Cyclicality in the stable isotope compositions of the river waters recorded over two years allowed us to estimate a time lag of three to four months between precipitations and their sampling at the discharge point of the watershed. We thus show that the transfer time from mountain-accumulated snow toward the low-altitude areas is a sensitive variable responding to the current climate warming.
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Short summary
This study investigates the seasonality of the mercury (Hg) concentration of olive trees. Hg concentrations of foliage, stems, soil surface, and litter were analyzed on a monthly basis in ancient olive trees growing in two groves in Lebanon. Our study draws an adequate baseline for the eastern Mediterranean and for the region with similar climatic inventories on Hg vegetation uptake in addition to being a baseline for new studies on olive trees in the Mediterranean.
This study investigates the seasonality of the mercury (Hg) concentration of olive trees. Hg...
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