| Records |
| Author |
Guillaume Hubert |
| Title |
Analyses of the Secondary Cosmic Ray using CCD camera in high-altitude observatories and Antarctica stations |
Type  |
Peer-reviewed symposium |
| Year |
2021 |
Publication |
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Abbreviated Journal |
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| Volume |
395 |
Issue |
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Pages |
1238 |
| Keywords |
Array Pixel Sensors (APS) Charge-Coupled Device (CCD) |
| Abstract |
Charge-Coupled Device (CCD) and Array Pixel Sensors (APS) can be used to image radiation-induced energy deposition. The high sensitivity of depleted silicon to ionizing radiation constitutes an opportunity to investigate radiation effects while it is a nuisance to astronomer activities. CCD and APS provide a better combination of spatial and intensity resolution for radiation events than other available types of detector. This paper proposes to analyze radiation events observed in the CCD camera and more specifically analyses of charge deposition spectra and spatially extensive events. Measurements were performed in the Pic du Midi from 2011 to 2015 and in the Concordia Antarctica station since 2018. Coupled transport models (i.e. particle transport and charge transport in semiconductors) allow investigating contributions to charge collection spectra as a function of the particle nature, i.e. neutron, proton and muon. Coupled measurements and simulations allow to access to the detected secondary CR flux and the charge deposition pattern. Results showed that high charge level events seen on atmospheric sites can be considered as hadronic component (mainly neutrons and protons) while low charge levels and punctual events are induced by muons which are able to generate up to 3 fC in the CCD camera. Hence, thanks to double level of measurement sites, muon discrimination from other secondary particles has been investigated. Cross-comparison analyses based on CCD and neutron spectrometers operated in both station/observatory investigate secondary CR dynamic. |
| Programme |
1112 |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8325 |
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| Author |
Chastel O., Blévin P., Humann‑Guilleminot S., Helfenstein F., Tartu S., Angelier F., Sebastiano M., Costantini D., Shaffer S., Bustamante P., Labadie P., Budzinski H., Herzke D., Moe B., Bustnes J.O., Gabrielsen G.W. |
| Title |
Contaminants of growing concern: Poly- and Perfluoroalkylated Substances (PFAS) and their physiological consequences in seabirds |
Type |
Peer-reviewed symposium |
| Year |
2021 |
Publication |
World seabird conference virtual meeting, October 4-8, 2021 |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
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| Keywords |
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| Abstract |
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| Programme |
330 |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8334 |
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| Author |
Lemonnier C, Schull Q, Stier A, Boonstra R, Delahanty B, Lefol E, Durand L, Robin J-p, Criscuolo F, Bize P &Amp; Va Viblanc |
| Title |
Coping with socially stressful environment in colonial seabirds: a test of adaptive phenotype programming in king penguins |
Type |
Peer-reviewed symposium |
| Year |
2021 |
Publication |
CEPA 5, Colloque d’Ecophysiologie Animale, 5ème édition, Montpellier, 2-4 novembre 2021. Poster. Actes du colloque |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
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| Abstract |
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| Programme |
119 |
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Approved |
yes |
| Call Number |
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Serial |
8337 |
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| Author |
Von Beckerath, X., Eitzinger, B., Sittler, B., Gilg, O., Yannic, G., Klein, A.-M., Benadi, G. |
| Title |
Long-term monitoring reveals topographical features and vegetation explain winter habitat use of an Arctic rodent |
Type |
Peer-reviewed symposium |
| Year |
2021 |
Publication |
Annual meeting of the icelandic ecological society. nordic society oikos, reykjavik, iceland, 16-17 april 2021 |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
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| Keywords |
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| Abstract |
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| Programme |
1036 |
| Campaign |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8450 |
| Permanent link to this record |
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| Author |
Garcin N, Viblanc VA, Schull Q, Michaux D, Reichert S, Robin JP, Bize P, Stier A |
| Title |
Naturally equipped to resist stress |
Type |
Peer-reviewed symposium |
| Year |
2021 |
Publication |
Society for experimental biology annual conference. poster. actes du colloque |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
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| Keywords |
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| Abstract |
Stress exposure and stress response are likely to vary according to life history strategies and environmental contexts. Although the acute release of glucocorticoids in response to unpredictable environmental conditions may lead to adaptative behavioral and physiological responses, exposure to high glucocorticoid levels on the long-term usually leads to deleterious cascading effects on animal’s physiology, behavior and fitness. Yet, some species may be more adapted to cope with challenging events than others and might naturally possess protective mechanisms limiting the adverse consequences of prolonged exposure to high glucocorticoid levels. King penguin chicks being naturally exposed to harsh weather, prolonged fasting and constant predation pressure, we investigated the life-history, behavioral and physiological consequences of an experimental increase in corticosterone levels on the medium and long-term (after removing implants), predicting to find relatively few costs associated with such treatment. Although non-significant, CORT-treated chicks were slightly larger, fledged slightly earlier and had slightly higher survival chances than placebo chicks. CORT-treated chicks were significantly more aggressive and displayed lower corticosterone response to acute stress on the medium term, while their physical activity and whole-body energetics were not significantly affected. While mitochondrial density was not significantly affected by the CORT treatment, CORT-treated chicks had lower oxidative stress levels on the long-term than placebo ones, and no significant impact was observed on telomere shortening. Finally, the expression of several genes (i.e. CORT receptor, HSP90, mTOR, NRF2 and TERF2) was up regulated in treated chicks, which could potentially mediate the apparent ‘stress’ resistance we observed at the phenotypic level. |
| Programme |
119 |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8454 |
| Permanent link to this record |
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| Author |
Viblanc Va, Stier A, Bize P, Schull Q, Criscuolo F, Groscolas R, Robin Jp |
| Title |
The ecophysiology of king penguins: responses to a fluctuating environment |
Type |
Peer-reviewed symposium |
| Year |
2021 |
Publication |
1ier webinaire franco-argentin sur l’antarctique: opportunités et défis scientifiques soixante ans après l'entrée en vigueur du traité sur l'antarctique (coorganisé par l’institut polaire français ipev, l’institut antarctique argentin et l’ambassade de fr |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
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| Keywords |
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| Abstract |
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| Programme |
119 |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8484 |
| Permanent link to this record |
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| Author |
Jouanneau W.; Léandri-breton D-j.; Herzke D.; Moe B.; Nikiforov V. A.; Pallud M.; Parenteau C.; Gabrielsen G. W.; Chastel O. |
| Title |
Maternal transfer of contaminants and endocrine disruption in an Arctic seabird |
Type |
Peer-reviewed symposium |
| Year |
2021 |
Publication |
5th animal ecophysiology seminar “cepa5” 2021 – november 2-4 – montpellier, france |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
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| Keywords |
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| Abstract |
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| Programme |
330 |
| Campaign |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8655 |
| Permanent link to this record |
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| Author |
Julien Jumelet, Florent Tencé, Alain Sarkissian, Slimane Bekki, Philippe Keckhut |
| Title |
10 years of Polar Stratospheric Clouds lidar measurements at the French antarctic station Dumont d'Urville |
Type |
Peer-reviewed symposium |
| Year |
2021 |
Publication |
EGU General Assembly 2021 |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
EGU21 |
| Keywords |
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| Abstract |
Polar Stratospheric Clouds (PSCs) play a primary role in polar stratospheric ozone depletion processes. Aside from recent improvements in both spaceborne monitoring as well as investigations on microphysics and modeling, there are still caveats on building a comprehensive picture of the PSC particle population, especially considering the fine optical signatures of some particles. In that regard, groundbased instruments provide fine and long term reference measurements that complement the global spaceborne coverage. Operated at the French antarctic station Dumont d’Urville (DDU) in the frame of the international Network for the Detection of Atmospheric Composition Change (NDACC), the Rayleigh/Mie/Raman lidar provides over the years a solid dataset to feed both process and classification studies, by monitoring cloud and aerosol occurrences in the upper troposphere and lower stratosphere. Located on antarctic shore (66°S – 140°E), the station has a privileged access to polar vortex dynamics. Measurements are weather-dependent with a yearly average of 130 nights of monitoring. Expected PSC formation temperatures are used to evaluate the whole PSC season occurrence statistics. We hereby present a consolidated dataset from 10 years of lidar measurements using the 532nm backscatter ratio, the aerosol depolarisation and local atmospheric conditions to help in building an aerosol/cloud classification. Overall, the DDU PSC pattern is very consistent with expected typical temperature controlled thresholds. Supercooled Ternary Solution (STS) particles are the most observed particle type, closely followed by Nitric Acid Trihydrate (NAT). ICE clouds are more rarely observed. The measurements also feature significant and detailed signatures of various aerosols events having reached the polar antarctic stratosphere, like the Calbuco eruption (2015) or the 2 australian wildfires episodes (2009 and 2019). We aim at refining the identification of those aerosols to include their impact in the scope of the scientific questions studied at DDU. |
| Programme |
209 |
| Campaign |
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Thesis |
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ISBN |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8725 |
| Permanent link to this record |
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| Author |
Pauline Goulet, Yan Roper-Coudert, Christophe Guinet |
| Title |
Using on-animal sensors to study the Ocean and its inhabitants |
Type |
Peer-reviewed symposium |
| Year |
2021 |
Publication |
1ère édition des Journées Drones et Capteurs Embarqués, 28-30 septembre 2023, La Vieille Perrotine, Ile d'Oléron, France |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
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| Keywords |
Animal Distribution Bio-logger Bio-logging Drones & Cap' |
| Abstract |
Bio-logging is a methodological approach in which miniature data recording devices are temporarily attached to free-ranging animals to monitor their movement, behaviour and physiology, as well as the physical parameters of the environment directly surrounding the animals, turning them into bio-plateformes. Unsurprisingly bio-logging emerged from marine and polar studies where the monitoring of individuals in these harsh and remote places cannot be done using traditional approaches. Miniaturization and technological advances has meant that the range of species that can be instrumented, as well as the diversity of the questions that can be sought through bio-logging, are expanding fast. New sensors are constantly being developed, pushing further the limits of this field. Instrumented animals deliver information not only on their activities but also on the physical characteristics of the environments they go through. For instance, over the last two decades, loggers attached to deep diving seals have supplemented physical oceanographic measurements with hydrographic profiles from CTD loggers but also with new series of biological measurements. For examples, fluorescence and light sensors provided information on the concentration of phytoplankton in the euphotic layer; miniature echo sounders together with high sensitivity and fast responding light sensor to detect bioluminescence, brought considerable progress in detecting small size particles (>1-2 mm) such as marine snow, zooplankton, but also fish and squids and estimate their abundance. |
| Programme |
1201 |
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ISBN |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8739 |
| Permanent link to this record |
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| Author |
Meudec L. |
| Title |
Analyse de la diversité des astéries du Plateau des Kerguelen par approches génétique et morphologique et modélisation des habitats |
Type |
Master 2 |
| Year |
2021 |
Publication |
Master 2 Sciences de la Mer, Sorbonne Universités |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
50 pp |
| Keywords |
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| Abstract |
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| Programme |
1044 |
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ISBN |
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Expedition |
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Conference |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8063 |
| Permanent link to this record |
