| Records |
Author  |
Vallas B. |
| Title |
Structuration spatiale et temporelle des colonies de manchots royaux (Aptenodytes patagonicus) |
Type |
Thesis |
| Year |
2021 |
Publication |
Mémoires de diplôme de l'EPHE en SVT |
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| Programme |
137 |
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Approved |
yes |
| Call Number |
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Serial |
8717 |
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| Author |
Van Hanja J |
| Title |
Caractérisation des habitats marins benthiques en zones côtières aux Iles Kerguelen par analyse d'images sous-marines |
Type |
Master 1 |
| Year |
2021 |
Publication |
Master 1 Océanographie, Université de Liège |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
10 pp |
| Keywords |
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| Abstract |
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| Programme |
1044 |
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Approved |
yes |
| Call Number |
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Serial |
8062 |
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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 |
Book Chapter |
| Year |
2021 |
Publication |
17émes journées scientifiques du cnfra, 26-27 mai 2021, paris, france |
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| Abstract |
Penguins are sea...birds. These highly evolved marine predators thrive in the oceanic habitat. Yet, they are conflicted – confronted to the duality of a life spent partly at sea, partly on-land. This life style has them subject to a number of very different ecological pressures. The ECONERGY polar project (IPEV #119) seeks to understand how king penguin cope with the constraints they face while living on-land, and the underlying physiological adaptations that allow them to do so. This includes studies dealing with fasting, parasites, predators, aggressive neighbors, climate and human disturbance. I will present some of the advances our project has made over the past decades, and where we will proceed in the years to come with a new project. We aim to understand bird stress from an integrative perspective, building a long-term observatory of penguin physiological responses to a changing world, and determining how breeding performances on land and foraging performances at sea are related. |
| Programme |
119 |
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Thesis |
Bachelor's thesis |
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Approved |
yes |
| Call Number |
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Serial |
8106 |
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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 |
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119 |
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Approved |
yes |
| Call Number |
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Serial |
8484 |
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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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Pages |
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| Abstract |
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| Programme |
1036 |
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yes |
| Call Number |
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Serial |
8450 |
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| Author |
W. J. Sydeman, D. S. Schoeman, S. A. Thompson, B. A. Hoover, M. García-Reyes, F. Daunt, P. Agnew, T. Anker-Nilssen, C. Barbraud, R. Barrett, P. H. Becker, E. Bell, P. D. Boersma, S. Bouwhuis, B. Cannell, R. J. M. Crawford, P. Dann, K. Delord, G. Elliott, K. E. Erikstad, E. Flint, R. W. Furness, M. P. Harris, S. Hatch, K. Hilwig, J. T. Hinke, J. Jahncke, J. A. Mills, T. K. Reiertsen, H. Renner, R. B. Sherley, C. Surman, G. Taylor, J. A. Thayer, P. N. Trathan, E. Velarde, K. Walker, S. Wanless, P. Warzybok, Y. Watanuki |
| Title |
Hemispheric asymmetry in ocean change and the productivity of ecosystem sentinels |
Type |
Journal |
| Year |
2021 |
Publication |
Science |
Abbreviated Journal |
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| Volume |
372 |
Issue |
6545 |
Pages |
980-983 |
| Keywords |
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| Abstract |
Sampling seabirds The vastness of the worlds' oceans makes them difficult to monitor. Seabirds that forage and breed across oceans globally have been recognized as sentinels of ocean health. Sydeman et al. looked across seabird species of both the Northern and Southern Hemispheres and found varying patterns. Northern Hemisphere species exhibited greater signs of stress and reduced breeding success, indicative of low fish resources. Southern Hemisphere species showed less impact on reproductive output, suggesting that the fish populations there have thus far been less disturbed. The differences across hemispheres indicate different strategies for conservation, with active recovery needed in the north and enhanced protection in the south. Science, abf1772, this issue p. 980 Climate change and other human activities are causing profound effects on marine ecosystem productivity. We show that the breeding success of seabirds is tracking hemispheric differences in ocean warming and human impacts, with the strongest effects on fish-eating, surface-foraging species in the north. Hemispheric asymmetry suggests the need for ocean management at hemispheric scales. For the north, tactical, climate-based recovery plans for forage fish resources are needed to recover seabird breeding productivity. In the south, lower-magnitude change in seabird productivity presents opportunities for strategic management approaches such as large marine protected areas to sustain food webs and maintain predator productivity. Global monitoring of seabird productivity enables the detection of ecosystem change in remote regions and contributes to our understanding of marine climate impacts on ecosystems. The breeding success of seabirds is tracking hemispheric differences in ocean warming and human impacts. The breeding success of seabirds is tracking hemispheric differences in ocean warming and human impacts. |
| Programme |
109 |
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0036-8075, 1095-9203 |
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Approved |
yes |
| Call Number |
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Serial |
7980 |
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| Author |
Warren RL. Cairns, Clara Turetta, Niccolò Maffezzoli, Olivier Magand, Beatriz Ferreira Araujo, Hélène Angot, Delia Segato, Paolo Cristofanelli, Francesca Sprovieri, Claudio Scarchilli, Paolo Grigioni, Virginia Ciardini, Carlo Barbante, Aurélien Dommergue, Andrea Spolaor |
| Title |
Mercury in precipitated and surface snow at Dome C and a first estimate of mercury depositional fluxes during the Austral summer on the high Antarctic plateau |
Type |
Journal |
| Year |
2021 |
Publication |
Atmospheric Environment |
Abbreviated Journal |
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| Volume |
262 |
Issue |
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Pages |
118634 |
| Keywords |
Atmospheric conditions High resolution sampling Snow scavenging factor Snow sublimation |
| Abstract |
The role of deposition fluxes on the mercury cycle at Concordia station, on the high Antarctic plateau have been investigated over the Austral summer between December 2017 to January 2018. Wet/frozen deposition was collected daily from specially sited tables, simultaneously with the collection of surface (0–3 cm) and subsurface (3–6 cm) snow and the analysis of Hg0 in the ambient air. Over the course of the experiment the atmospheric Hg0 concentrations ranged from 0.58 ± 0.19 to 1.00 ± 0.33 ng m−3, surface snow Hg concentrations varied between (0–3 cm) 0.006 ± 0.003 to 0.001 ± 0.001 ng cm−3 and subsurface snow (3–6 cm) concentrations varied between 0.001 ± 0.001 to 0.003 ± 0.002 ng cm−3. The maximum daily wet deposition flux was found to be 23 ng m−2 d−1. Despite the low temporal resolution of our measurements combined with their potential errors, the linear regression of the Hg deposition fluxes against the snow accumulation rates allowed us to estimate the mean dry deposition rate from the intercept of the graph as −0.005 +- 0.008 ng m−2 d−1. From this analysis, we conclude that wet deposition accounts for the vast majority of the Hg deposition fluxes at Concordia Station. The number of snow events, together with the continuous GEM measurements have allowed us to make a first estimation of the mean snow scavenging factor at Dome C. Using the slope of the regression of mercury flux on snow accumulation we obtained a snow scavenging factor that ranges from 0.21 to 0.22 ± 0.02 (ngHg/g snow)/(ngHg/m3 air). Our data indicate that the boundary layer height and local meteorological effects influence Hg0 reemission from the top of (0–3 cm) the snowpack into the atmosphere and into the deeper snowpack layer (3–6 cm). These data will help constrain numerical models on the behaviour of mercury in Antarctica. |
| Programme |
1028 |
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Edition |
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| ISSN |
1352-2310 |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
8057 |
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| Author |
William Jouanneau, Don-Jean Léandri-Breton, Alexandre Corbeau, Dorte Herzke, Børge Moe, Vladimir A. Nikiforov, Geir W. Gabrielsen, Olivier Chastel |
| Title |
A Bad Start in Life? Maternal Transfer of Legacy and Emerging Poly- and Perfluoroalkyl Substances to Eggs in an Arctic Seabird |
Type |
Journal |
| Year |
2021 |
Publication |
Environmental Science & Technology |
Abbreviated Journal |
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| Volume |
56 |
Issue |
10 |
Pages |
6091-6102 |
| Keywords |
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| Abstract |
In birds, maternal transfer is a major exposure route for several contaminants, including poly- and perfluoroalkyl substances (PFAS). Little is known, however, about the extent of the transfer of the different PFAS compounds to the eggs, especially for alternative fluorinated compounds. In the present study, we measured legacy and emerging PFAS, including Gen-X, ADONA, and F-53B, in the plasma of prelaying black-legged kittiwake females breeding in Svalbard and the yolk of their eggs. We aimed to (1) describe the contaminant levels and patterns in both females and eggs, and (2) investigate the maternal transfer, that is, biological variables and the relationship between the females and their eggs for each compound. Contamination of both females and eggs were dominated by linPFOS then PFUnA or PFTriA. We notably found 7:3 fluorotelomer carboxylic acid─a precursor of long-chain carboxylates─in 84% of the egg yolks, and provide the first documented finding of ADONA in wildlife. Emerging compounds were all below the detection limit in female plasma. There was a linear association between females and eggs for most of the PFAS. Analyses of maternal transfer ratios in females and eggs suggest that the transfer is increasing with PFAS carbon chain length, therefore the longest chain perfluoroalkyl carboxylic acids (PFCAs) were preferentially transferred to the eggs. The mean ∑PFAS in the second-laid eggs was 73% of that in the first-laid eggs. Additional effort on assessing the outcome of maternal transfers on avian development physiology is essential, especially for PFCAs and emerging fluorinated compounds which are under-represented in experimental studies. |
| Programme |
330 |
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0013-936X |
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Approved |
yes |
| Call Number |
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Serial |
8315 |
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| Author |
Yan Axel Gomez Coutouly |
| Title |
Un peuplement antérieur à 20 000 ans en Amérique ? |
Type |
Book Chapter |
| Year |
2021 |
Publication |
« Et pourtant elle tourne ! » blocages épistémologiques en archéologie. Colloque organisé par Laure Fontana et Sophie A. de Beaune, (Projets collectifs ArScAn), 18-19 novembre 2021, Campus de Nanterre Université, France |
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Issue |
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Pages |
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| Programme |
1217 |
| Campaign |
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| Address |
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Thesis |
Bachelor's thesis |
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Approved |
yes |
| Call Number |
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Serial |
8692 |
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| Author |
Yushiro Fujii, Kenji Satake, Shingo Watada, Tung-Cheng Ho |
| Title |
Re-examination of Slip Distribution of the 2004 Sumatra–Andaman Earthquake (Mw 9.2) by the Inversion of Tsunami Data Using Green’s Functions Corrected for Compressible Seawater Over the Elastic Earth |
Type |
Journal |
| Year |
2021 |
Publication |
Pure and Applied Geophysics |
Abbreviated Journal |
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| Volume |
178 |
Issue |
12 |
Pages |
4777-4796 |
| Keywords |
2004 Sumatra–Andaman earthquake far-field tsunami waveform phase-corrected Green’s function slip distribution tsunami data inversion |
| Abstract |
We re-examined the slip distribution on faults of the 2004 Sumatra–Andaman (M 9.1 according to USGS) earthquake by the inversion of tsunami data with phase-corrected Green’s functions applied to linear long waves. The correction accounts for the effects of compressibility of seawater, elasticity of solid earth, and gravitational potential variation associated with the motion of mass to reproduce the delayed arrivals and the reversed phase of the first tsunami waves. We used sea surface height (SSH) data from satellite altimetry (SA) measurements along five tracks, and the tsunami waveforms recorded at tide gauges (TGs) and ocean bottom pressure gauges (OBPGs) in and around the Indian Ocean. The inversion results for both data sets for different rupture velocities (Vr) show that the reproducibility of the spatiotemporal SSHs and tsunami waveforms is improved by the phase corrections, although the effects are not so significant within the Indian Ocean. The best slip distribution model from joint inversion of SA, TG and OBPG data with Vr of 1.3 km/s shows the largest slips of 16–25 m off Sumatra Island, large slips of 2–11 m off the Nicobar Islands, and moderate slips of 2–6 m in the Andaman Islands. The inversion results reproduce the far-field tsunami waveforms well at distant stations even more than 13,000–25,000 km from the epicenter. The total source length is about 1400 km and the seismic moment is Mw 9.2, longer and larger than that of our previous estimates based on TG records. |
| Programme |
688 |
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Edition |
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| ISSN |
1420-9136 |
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Approved |
yes |
| Call Number |
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8411 |
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