L. Labrousse, S. Elvevold, C. Lepvrier, P. Agard. (2008). Structural analysis of high-pressure metamorphic rocks of Svalbard: Reconstructing the early stages of the Caledonian orogeny (Vol. 27).
Keywords: blueschists Caledonian orogeny structural analysis Svalbard
Programme: 398
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Karlin C., Chesnokov Y.V., David F. & Diachenko V.I. (1997). Techniques et culture, 30, 25–62.
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. (2015). Techniques et Culture, 63, 92–109.
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Paul Tixier, Nicolas Gasco, Jared R. Towers, Christophe Guinet. (2021). Killer whales of the Crozet Archipelago and adjacent waters: photo-identification catalogue, population status and distribution in 2020.
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. (2022). Autonomous Optical Sensor to Study the Evolution of Snow Density in Polar Environment (Vol. Proceedings of Imaging and Applied Optics Congress).
Abstract: A system to study the evolution of snow density is presented here with an emphasis on the system itself and on the efforts to make a robust system for harsh environments. The metric to deduce the density of the snow is the measurement of the concentration of ambient air oxygen using a tunable diode laser spectroscopy technique: the first harmonic phase angle wavelength modulation spectroscopy. For greater robustness, the system is equipped with an embedded calibration system and is built for a smart power consumption.
Programme: 1042
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Marina Renedo, Paco Bustamante, Emmanuel Tessier, Zoyne Pedrero, Yves Cherel, David Amouroux. (2017). Assessment of mercury speciation in feathers using species-specific isotope dilution analysis (Vol. 174).
Abstract: Seabirds are considered as effective sentinels of environmental marine contamination and their feathers are extensively used as non-lethal samples for contaminant biomonitoring. This tissue represents the main route for mercury (Hg) elimination in seabirds and contains predominantly methylmercury (MeHg). In this work, we developed a robust analytical technique for precise and accurate simultaneous quantification of MeHg, inorganic Hg (iHg) and consequently total Hg (THg), in feathers by gas-chromatography (GC)-ICPMS analyses using species-specific isotope dilution technique. An optimisation of the extraction method was carried out by testing different extraction systems, reagents and spiking procedures using an internal reference feather sample. The procedure was validated for MeHg and THg concentrations with a human hair certified reference material. Microwave nitric acid extraction with spike addition before the extraction provided the best recovery and was chosen as the most appropriate species simultaneous extraction method (SSE). An additional assessment was performed by comparison of our developed extraction method and a MeHg specific extraction technique (MSE) classically used for Hg speciation studies on feathers. The developed method was applied to feather samples from a large number of seabirds from the Southern Ocean (penguins, albatrosses, petrels and skuas) to investigate the variability of Hg speciation across a large range of Hg exposure conditions and concentrations. In all cases, MeHg accounted for > 90% of THg, thus verifying the predominance of organic Hg over iHg in feathers.
Keywords: GC-ICPMS Inorganic mercury Inter-species transformations Keratin Methylmercury Seabirds Southern Ocean
Programme: 109
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Marina Renedo, Paco Bustamante, Emmanuel Tessier, Zoyne Pedrero, Yves Cherel, David Amouroux. (2017). Assessment of mercury speciation in feathers using species-specific isotope dilution analysis (Vol. 174).
Abstract: Seabirds are considered as effective sentinels of environmental marine contamination and their feathers are extensively used as non-lethal samples for contaminant biomonitoring. This tissue represents the main route for mercury (Hg) elimination in seabirds and contains predominantly methylmercury (MeHg). In this work, we developed a robust analytical technique for precise and accurate simultaneous quantification of MeHg, inorganic Hg (iHg) and consequently total Hg (THg), in feathers by gas-chromatography (GC)-ICPMS analyses using species-specific isotope dilution technique. An optimisation of the extraction method was carried out by testing different extraction systems, reagents and spiking procedures using an internal reference feather sample. The procedure was validated for MeHg and THg concentrations with a human hair certified reference material. Microwave nitric acid extraction with spike addition before the extraction provided the best recovery and was chosen as the most appropriate species simultaneous extraction method (SSE). An additional assessment was performed by comparison of our developed extraction method and a MeHg specific extraction technique (MSE) classically used for Hg speciation studies on feathers. The developed method was applied to feather samples from a large number of seabirds from the Southern Ocean (penguins, albatrosses, petrels and skuas) to investigate the variability of Hg speciation across a large range of Hg exposure conditions and concentrations. In all cases, MeHg accounted for > 90% of THg, thus verifying the predominance of organic Hg over iHg in feathers.
Keywords: GC-ICPMS Inorganic mercury Inter-species transformations Keratin Methylmercury Seabirds Southern Ocean
Programme: 109
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Armelle Decaulne, Najat Bhiry, Fabienne Joliet, Laine Chanteloup, Thora Martina Herrmann, Bruno Persat, Daniel Germain, Orsane Rousset. (2021). TAKUJUQ: Where Art and Science meet in Nunavik.
Abstract: The TUKISIK (Tukisigasuaqatigit: Understanding together) is a scientific program, ongoing since 2014, concerning human-environment interactions, reinforcing links between scientists and several communities.
Programme: 1148
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Cazes G. & Bachelard C. (1998). T.A.A.F./I.F.R.T.P., .
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Pisanu B. & Bain O. (1999). Aonchotheca musimon n.sp. (Nematoda: Capillariinae) from the mouflon Ovis musimon in the sub-Antarctic Kerguelen archipelago, with comments on the relationships with A. bilobata (Bhalero, 1933) Moravec, 1982 and other species of the genus. Syst. Parasitol., 43, 17–24.
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