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Your search keyword '"Pringault, Olivier"' showing total 319 results
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319 results on '"Pringault, Olivier"'

1. Chapter Status of water quality and impact of dredging activities in four ports of the gulf of Aigues Mortes (France)

Author

Chouba, Cyrine, Causse, Léa, Marie, Mylène, DELPOUX, Sophie, FREYDIER, Rémi, Toubiana, Mylene, MONFORT, Patrick, Pringault, Olivier, and MONTIGNY, Chrystelle

Subjects
Marina, Dredging, Trace metal, thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment
Abstract

Marinas located at the land-sea interface, are both subject to autochthonous sources of pollution and form a receptacle for terrigenous inputs from upstream areas resulting in the qualitative degradation. The objective of this project is to carry out a diagnosis of the chemical and microbiological contamination of the waters of the 4 ports located in the Gulf of Aigues Mortes (France) concerning a mutualized dredging operation. The originality of the results lies in the fact that they will allow not only to compare the chemical and microbiological qualities of the waters of the marinas, but also to determine the impact of the same type of dredging on the resuspension of contaminants in the water column

Published
2022
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4. Contamination of planktonic food webs in the Mediterranean Sea: Setting the frame for the MERITE-HIPPOCAMPE oceanographic cruise (spring 2019)

Author

Tedetti, Marc, Tronczynski, Jacek, Carlotti, François, Pagano, Marc, Ismail, Sana Ben, Sammari, Cherif, Hassen, Malika Bel, Desboeufs, Karine, Poindron, Charlotte, Chifflet, Sandrine, Zouari, Amel Bellaaj, Abdennadher, Moufida, Amri, Sirine, Bănaru, Daniela, Abdallah, Lotfi Ben, Bhairy, Nagib, Boudriga, Ismail, Bourin, Aude, Brach-Papa, Christophe, Briant, Nicolas, Cabrol, Léa, Chevalier, Cristele, Chouba, Lassaad, Coudray, Sylvain, Yahia, Mohamed Nejib Daly, de Garidel-Thoron, Thibault, Dufour, Aurélie, Dutay, Jean-Claude, Espinasse, Boris, Fierro-González, Pamela, Fornier, Michel, Garcia, Nicole, Giner, Franck, Guigue, Catherine, Guilloux, Loïc, Hamza, Asma, Heimbürger-Boavida, Lars-Eric, Jacquet, Stéphanie, Knoery, Joel, Lajnef, Rim, Belkahia, Nouha Makhlouf, Malengros, Deny, Martinot, Pauline L., Bosse, Anthony, Mazur, Jean-Charles, Meddeb, Marouan, Misson, Benjamin, Pringault, Olivier, Quéméneur, Marianne, Radakovitch, Olivier, Raimbault, Patrick, Ravel, Christophe, Rossi, Vincent, Rwawi, Chaimaa, Hlaili, Asma Sakka, Tesán-Onrubia, Javier Angel, Thomas, Bastien, Thyssen, Melilotus, Zaaboub, Noureddine, and Garnier, Cédric

Published
2023
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18. Corrigendum to “Assessing the bioavailability of black carbon-derived dissolved organic matter for marine heterotrophic prokaryotes” [Sci. Total Environ. 901 (2023) 165802]

Author

Martinot, Pauline L., primary, Guigue, Catherine, additional, Chifflet, Sandrine, additional, Cuny, Philippe, additional, Barani, Aude, additional, Didry, Morgane, additional, Dignan, Clara, additional, Guyomarc'h, Léa, additional, Pradel, Nathalie, additional, Pringault, Olivier, additional, Van Wambeke, France, additional, Vu, Cam Tu, additional, Mari, Xavier, additional, and Tedetti, Marc, additional

Published
2023
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19. Effects of copper and butyltin compounds on the growth, photosynthetic activity and toxin production of two HAB dinoflagellates: The planktonic Alexandrium catenella and the benthic Ostreopsis cf. ovata

Author

Couet, Douglas, Pringault, Olivier, Bancon-Montigny, Chrystelle, Briant, Nicolas, Elbaz Poulichet, Françoise, Delpoux, Sophie, Kefi-Daly Yahia, Ons, Hela, BenGharbia, Charaf, M’Rabet, Hervé, Fabienne, Rovillon, Georges, Amzil, Zouher, and Laabir, Mohamed

Published
2018
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27. Added Value of Water Column Spatiotemporal Monitoring to Assess Variability of Trace Metal Elements and Organotin Compounds in Mediterranean Harbours.

Author

Chouba, Cyrine, Pringault, Olivier, Domeau, Aurélien, Delpoux, Sophie, Causse, Léa, Marie, Mylène, Freydier, Rémi, and Montigny, Chrystelle

Subjects
TRACE metals, ORGANOTIN compounds, TRACE elements, HARBORS, COPPER, OCHRATOXINS
Abstract

Marinas are semi-enclosed environments characterised by reduced hydrodynamic energy, high sedimentation rates, and reduced oxygen levels. The ongoing development of activities and infrastructure construction are leading to deterioration in the quality of coastal aquatic environments, creating environmental risks. Trace metal elements (TMEs) and organotins are significant contaminants, prompting this study to evaluate the added value of spatiotemporal monitoring compared to one-time sediment assessments. Two Mediterranean harbours, Port Camargue (PC) and Port Carnon (C), differing in morphology and size, were monitored for a year with regular water sampling, focusing on TMEs and organotins. Sediment contamination, notably in the technical zone, revealed concentrations of Cu (309 and 1210 mg kg−1 for C and PC, respectively), Zn (242 and 425 mg kg−1 for C and PC, respectively), and tributyltin (TBT) (198 and 4678 µg (Sn) kg−1 for C and PC, respectively) surpassing the effect range medium (ERM), while other marina stations generally stayed below this threshold. Spatiotemporal water monitoring highlighted concentrations above environmental quality standards (EQS) at all stations of the larger marina. This exceedance was systematic for Cu and Zn in all samples, ranging respectively between 2.54 and 37.56 µg (Sn) L−1 and 0.63 and 33.48 µg (Sn) L−1. A notable temporal dynamic for TBT and Cu was also observed. Conversely, the open marina, connected to the open sea, rarely exhibited concentrations above EQS in water, despite sediment concentrations occasionally exceeding ERM values. This underscores that risk assessment in these ecosystems cannot rely solely on sediment characterisation. [ABSTRACT FROM AUTHOR]

Published
2024
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49. Capacity of the potentially toxic diatoms Pseudo-nitzschia mannii and Pseudo-nitzschia hasleana to tolerate polycyclic aromatic hydrocarbons

Author

Ben Garali, Sondes Melliti, Sahraoui, Ines, Ben Othman, Hiba, Kouki, Abdessalem, De La Iglesia, Pablo, Diogene, Jorge, Lafabrie, Celine, Andree, Karl B., Fernandez-tejedor, Margarita, Mejri, Kaouther, Meddeb, Marouan, Pringault, Olivier, Hlaili, Asma Sakka, Ben Garali, Sondes Melliti, Sahraoui, Ines, Ben Othman, Hiba, Kouki, Abdessalem, De La Iglesia, Pablo, Diogene, Jorge, Lafabrie, Celine, Andree, Karl B., Fernandez-tejedor, Margarita, Mejri, Kaouther, Meddeb, Marouan, Pringault, Olivier, and Hlaili, Asma Sakka

Abstract

This study investigates the effects of polycyclic aromatic hydrocarbons (PAHs) on two potentially toxic Pseudonitzschia hasleana and P. mannii, isolated from a PAH contaminated marine environment. Both species, maintained in non-axenic cultures, have been exposed during 144 h to increasing concentrations of a 15 PAHs mixture. Analysis of the domoic acid, showed very low concentrations. Dose?response curves for growth and photosynthesis inhibition were determined. Both species have maintained their growth until the end of incubation even at the highest concentration tested (120 ?g l-1), Nevertheless, P mannii showed faster growth and seemed to be more tolerant than P. hasleana. To reduce PAH toxicity, both species have enhanced their biovolume, with a higher increase for P. mannii relative to P hasleana. Both species were also capable of bioconcentrating PAHs and were able to degrade them probably in synergy with their associated bacteria. The highest biodegradation was observed for P. mannii, which could harbored more efficient hydrocarbon-degrading bacteria. This study provides the first evidence that PAHs can control the growth and physiology of potentially toxic diatoms. Future studies should investigate the bacterial community associated with Pseudo-nitzschia species, as responses to pollutants or to other environmental stressors could be strongly influence by associated bacteria.

Published
2021
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50. Transient effect of bisphenol A (BPA) and di-(2-ethylhexyl) phthalate (DEHP) on the cosmopolitan marine diatom Chaetoceros decipiens-lorenzianus

Author

M’rabet, Charaf, Kéfi–daly Yahia, Ons, Chomerat, Nicolas, Zentz, Frederic, Bilien, Gwenael, Pringault, Olivier, M’rabet, Charaf, Kéfi–daly Yahia, Ons, Chomerat, Nicolas, Zentz, Frederic, Bilien, Gwenael, and Pringault, Olivier

Abstract

Incubation under controlled laboratory conditions were performed to assess the toxic effects of two plastic derived chemicals, bisphenol A (BPA) and di-(2-ethylhexyl) phthalate (DEHP), on the growth, photosynthetic efficiency and photosynthetic activity of the cosmopolitan diatom Chaetoceros decipiens-lorenzianus. Non-axenic diatom cells were exposed to concentrations of BPA and DEHP (separately and in mixture), mimicking concentrations observed in contaminated marine ecosystems, for seven days. Upon short-term exposure (i.e., during the first 48 h), BPA and DEHP induced a slight but significant stimulation of biomass and photosynthetic activity relative to the control, whereas, no significant impact was observed on the photosynthetic efficiency. Nevertheless, this pattern was transient. The stimulation was followed by a return to control conditions for all treatments at the end of incubation. These results showed that the cosmopolitan diatom Chaetoceros was not impacted by representative in situ concentrations of plastic derivatives, thus confirming its ability to thrive in coastal anthropogenic environments.

Published
2021
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