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Bethany L. Clark, Ana PB Carneiro, Elizabeth J. Pearmain, Marie-Morgane Rouyer, Thomas A. Clay, Win Cowger, Richard A. Phillips, Andrea Manica, Carolina Hazin, Marcus Eriksen, Jacob González-Solís, Josh Adams, Yuri V. Albores-Barajas, Joanna Alfaro-Shigueto, Maria Saldanha Alho, Deusa Teixeira Araujo, José Manuel Arcos, John PY Arnould, Nadito JP Barbosa, Christophe Barbraud, Annalea M. Beard, Jessie Beck, Elizabeth A. Bell, Della G. Bennet, Maud Berlincourt, Manuel Biscoito, Oskar K. Bjørnstad, Mark Bolton, Katherine A. Booth Jones, John J. Borg, Karen Bourgeois, Vincent Bretagnolle, Joël Bried, James V. Briskie, M. de L. Brooke, Katherine C. Brownlie, Leandro Bugoni, Licia Calabrese, Letizia Campioni, Mark J. Carey, Ryan D. Carle, Nicholas Carlile, Ana R. Carreiro, Paulo Catry, Teresa Catry, Jacopo G. Cecere, Filipe R. Ceia, Yves Cherel, Chang-Yong Choi, Marco Cianchetti-Benedetti, Rohan H. Clarke, Jaimie B. Cleeland, Valentina Colodro, Bradley C. Congdon, Jóhannis Danielsen, Federico De Pascalis, Zoe Deakin, Nina Dehnhard, Giacomo Dell'Omo, Karine Delord, Sébastien Descamps, Ben J. Dilley, Herculano A. Dinis, Jerome Dubos, Brendon J. Dunphy, Louise M. Emmerson, Ana Isabel Fagundes, Annette L. Fayet, Jonathan J. Felis, Johannes H. Fischer, Amanda ND Freeman, Aymeric Fromant, Giorgia Gaibani, David García, Carina Gjerdrum, Ivandra Soeli Gonçalves Correia Gomes, Manuela G. Forero, José P. Granadeiro, W. James Grecian, David Grémillet, Tim Guilford, Gunnar Thor Hallgrimsson, Luke R. Halpin, Erpur Snær Hansen, April Hedd, Morten Helberg, Halfdan H. Helgason, Leeann M. Henry, Hannah FR Hereward, Marcos Hernandez-Montero, Mark A. Hindell, Peter J. Hodum, Simona Imperio, Audrey Jaeger, Mark Jessopp, Patrick GR Jodice, Carl G. Jones, Christopher W. Jones, Jón Einar Jónsson, Adam Kane, Sven Kapelj, Yuna Kim, Holly Kirk, Yann Kolbeinsson, Philipp L. Kraemer, Lucas Krüger, Paulo Lago, Todd J. Landers, Jennifer L. Lavers, Matthieu Le Corre, Andreia Leal, Maite Louzao, Jeremy Madeiros, Maria Magalhães, Mark L. Mallory, Juan F. Masello, Bruno Massa, Sakiko Matsumoto, Fiona McDuie, Laura McFarlane Tranquilla, Fernando Medrano, Benjamin J. Metzger, Teresa Militão, William A. Montevecchi, Rosalinda C. Montone, Leia Navarro-Herrero, Verónica C. Neves, David G. Nicholls, Malcolm AC Nicoll, Ken Norris, Steffen Oppel, Daniel Oro, Ellie Owen, Oliver Padget, Vítor H. Paiva, David Pala, Jorge M. Pereira, Clara Péron, Maria V. Petry, Admilton de Pina, Ariete T. Moreira Pina, Patrick Pinet, Pierre A. Pistorius, Ingrid L. Pollet, Benjamin J. Porter, Timothée A. Poupart, Christopher DL Powell, Carolina B. Proaño, Júlia Pujol-Casado, Petra Quillfeldt, John L. Quinn, Andre F. Raine, Helen Raine, Iván Ramírez, Jaime A. Ramos, Raül Ramos, Andreas Ravache, Matt J. Rayner, Timothy A. Reid, Gregory J. Robertson, Gerard J. Rocamora, Dominic P. Rollinson, Robert A. Ronconi, Andreu Rotger, Diego Rubolini, Kevin Ruhomaun, Asunción Ruiz, James C. Russell, Peter G. Ryan, Sarah Saldanha, Ana Sanz-Aguilar, Mariona Sardà-Serra, Yvan G. Satgé, Katsufumi Sato, Wiebke C. Schäfer, Stefan Schoombie, Scott A. Shaffer, Nirmal Shah, Akiko Shoji, Dave Shutler, Ingvar A. Sigurðsson, Mónica C. Silva, Alison E. Small, Cecilia Soldatini, Hallvard Strøm, Christopher A. Surman, Akinori Takahashi, Vikash RV Tatayah, Graeme A. Taylor, Robert J. Thomas, David R. Thompson, Paul M. Thompson, Thorkell L. Thórarinsson, Diego Vicente-Sastre, Eric Vidal, Ewan D. Wakefield, Susan M. Waugh, Henri Weimerskirch, Heiko U. Wittmer, Takashi Yamamoto, Ken Yoda, Carlos B. Zavalaga, Francis J. Zino, Maria P. Dias |
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Title |
Global assessment of marine plastic exposure risk for oceanic birds. |
Type |
Journal |
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Year  |
2023 |
Publication |
Nature communications |
Abbreviated Journal |
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Volume |
14 |
Issue |
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Pages |
3665 |
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Abstract |
Plastic pollution is distributed patchily around the world's oceans. Likewise, marine organisms that are vulnerable to plastic ingestion or entanglement have uneven distributions. Understanding where wildlife encounters plastic is crucial for targeting research and mitigation. Oceanic seabirds, particularly petrels, frequently ingest plastic, are highly threatened, and cover vast distances during foraging and migration. However, the spatial overlap between petrels and plastics is poorly understood. Here we combine marine plastic density estimates with individual movement data for 7137 birds of 77 petrel species to estimate relative exposure risk. We identify high exposure risk areas in the Mediterranean and Black seas, and the northeast Pacific, northwest Pacific, South Atlantic and southwest Indian oceans. Plastic exposure risk varies greatly among species and populations, and between breeding and non-breeding seasons. Exposure risk is disproportionately high for Threatened species. Outside the Mediterranean and Black seas, exposure risk is highest in the high seas and Exclusive Economic Zones (EEZs) of the USA, Japan, and the UK. Birds generally had higher plastic exposure risk outside the EEZ of the country where they breed. We identify conservation and research priorities, and highlight that international collaboration is key to addressing the impacts of marine plastic on wide-ranging species. |
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388 |
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ISSN |
2041-1723 |
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yes |
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Serial |
8681 |
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Author |
C. Sauser, F. Angelier, P. Blévin, O. Chastel, G.W. Gabrielsen, W. Jouanneau, A. Kato, B. Moe, F. Ramírez, S. Tartu, S. Descamps |
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Title |
Demographic responses of Arctic seabirds to spring sea-ice variations |
Type |
Journal |
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Year |
2023 |
Publication |
Frontiers in Ecology and Evolution |
Abbreviated Journal |
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Volume |
11 |
Issue |
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Pages |
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Abstract |
The Arctic experiences a rapid retreat of sea-ice, particularly in spring and summer, which may dramatically affect pagophilic species. In recent years, the decline of many Arctic seabird populations has raised concerns about the potential role of sea-ice habitats on their demography. Spring sea-ice drives the dynamics of phytoplankton blooms, the basis of Arctic food webs, and changes in spring sea-ice have the potential to affect the demographic parameters of seabirds through bottom-up processes. To better understand the effects of spring sea-ice on Arctic seabirds, we investigated the influence of spring sea-ice concentration on the survival and breeding success of three seabird species with contrasted foraging strategies in two Svalbard fjords in the high Arctic. We examined these relationships using long-term demographic data (2005–2021) from black-legged kittiwakes (Rissa tridactyla), Brünnich guillemots (Uria lomvia), and little auks (Alle alle). Spring sea-ice concentration was positively related to both the survival and breeding success of little auks, suggesting a higher sensitivity of this species to spring sea-ice. By contrast, the two other species were not particularly sensitive to changes in spring sea-ice, even though a potentially spurious negative effect on the breeding success of black-legged kittiwakes was observed. Overall, the study suggests that spring sea-ice may be involved in the demography of Arctic seabirds, but probably does not play a major role. |
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Programme |
330 |
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ISSN |
2296-701X |
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yes |
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Call Number |
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Serial |
8533 |
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Author |
Cara-Paige Green, David B. Green, Norman Ratcliffe, David Thompson, Mary-Anne Lea, Alastair M. M. Baylis, Alexander L. Bond, Charles-André Bost, Sarah Crofts, Richard J. Cuthbert, Jacob González-Solís, Kyle W. Morrison, Maud Poisbleau, Klemens Pütz, Andrea Raya Rey, Peter G. Ryan, Paul M. Sagar, Antje Steinfurth, Jean-Baptiste Thiebot, Megan Tierney, Thomas Otto Whitehead, Simon Wotherspoon, Mark A. Hindell |
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Title |
Potential for redistribution of post-moult habitat for Eudyptes penguins in the Southern Ocean under future climate conditions |
Type |
Journal |
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Year |
2023 |
Publication |
Global Change Biology |
Abbreviated Journal |
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Volume |
29 |
Issue |
3 |
Pages |
648-667 |
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Keywords |
climate change habitat preference models migration overwinter species redistributions Subantarctic penguins |
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Abstract |
Anthropogenic climate change is resulting in spatial redistributions of many species. We assessed the potential effects of climate change on an abundant and widely distributed group of diving birds, Eudyptes penguins, which are the main avian consumers in the Southern Ocean in terms of biomass consumption. Despite their abundance, several of these species have undergone population declines over the past century, potentially due to changing oceanography and prey availability over the important winter months. We used light-based geolocation tracking data for 485 individuals deployed between 2006 and 2020 across 10 of the major breeding locations for five taxa of Eudyptes penguins. We used boosted regression tree modelling to quantify post-moult habitat preference for southern rockhopper (E. chrysocome), eastern rockhopper (E. filholi), northern rockhopper (E. moseleyi) and macaroni/royal (E. chrysolophus and E. schlegeli) penguins. We then modelled their redistribution under two climate change scenarios, representative concentration pathways RCP4.5 and RCP8.5 (for the end of the century, 2071–2100). As climate forcings differ regionally, we quantified redistribution in the Atlantic, Central Indian, East Indian, West Pacific and East Pacific regions. We found sea surface temperature and sea surface height to be the most important predictors of current habitat for these penguins; physical features that are changing rapidly in the Southern Ocean. Our results indicated that the less severe RCP4.5 would lead to less habitat loss than the more severe RCP8.5. The five taxa of penguin may experience a general poleward redistribution of their preferred habitat, but with contrasting effects in the (i) change in total area of preferred habitat under climate change (ii) according to geographic region and (iii) the species (macaroni/royal vs. rockhopper populations). Our results provide further understanding on the regional impacts and vulnerability of species to climate change. |
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Programme |
394 |
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ISSN |
1365-2486 |
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yes |
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Call Number |
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Serial |
8696 |
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Author |
Chambodut A., Bernard A. |
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Title |
Influence des émissions radio-amateurs sur les données des observatoires magnétiques |
Type |
Peer-reviewed symposium |
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Year |
2023 |
Publication |
19émes journées scientifiques du cnfra, 03-05 mai 2023, paris france |
Abbreviated Journal |
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Volume |
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Issue |
Communication n°433 |
Pages |
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Keywords |
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Abstract |
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Programme |
139 |
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Approved |
yes |
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Call Number |
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Serial |
8671 |
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| Permanent link to this record |
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Author |
Charlotte Bruland, Celine Hadziioannou |
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Title |
Gliding tremors associated with the 26 second microseism in the Gulf of Guinea |
Type |
Journal |
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Year |
2023 |
Publication |
Communications Earth & Environment |
Abbreviated Journal |
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Volume |
4 |
Issue |
1 |
Pages |
1-9 |
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Keywords |
Geophysics Seismology Volcanology |
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Abstract |
A location in the Gulf of Guinea, which emits monochromatic seismic waves at 26-second period, seemingly continuously, was identified in the 1960s. However, the origin of these seismic waves remains enigmatic to date. Here we use three-component data from two seismic arrays in Africa, as well as additional seismic data compiled from around the world, to investigate the tremors. We identify frequency glides accompanying the previously known 26 s microseism which start at the same frequency and originate in the same, fixed location in the Gulf of Guinea. The stable characteristics of the tremors, their low frequency range, the implied large spatial scale, and the decades-long timescales where this phenomenon seems to have been active, all point towards a gap in our understanding of long period oceanic and volcanic signals. Since tremor is an important tool to monitor volcanoes, understanding this phenomenon may affect future forecasting of volcanic activity. |
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Programme |
133 |
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ISSN |
2662-4435 |
ISBN |
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Approved |
yes |
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Call Number |
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Serial |
8536 |
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Author |
Christoph Keuschnig, Timothy M. Vogel, Elena Barbaro, Andrea Spolaor, Krystyna Koziol, Mats P. Björkman, Christian Zdanowicz, Jean-Charles Gallet, Bartłomiej Luks, Rose Layton, Catherine Larose |
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Title |
Selection processes of Arctic seasonal glacier snowpack bacterial communities |
Type |
Journal |
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Year |
2023 |
Publication |
Microbiome |
Abbreviated Journal |
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Volume |
11 |
Issue |
1 |
Pages |
35 |
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Keywords |
Arctic Microbial ecology Neutral processes Niche-based selection Snow |
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Abstract |
Arctic snowpack microbial communities are continually subject to dynamic chemical and microbial input from the atmosphere. As such, the factors that contribute to structuring their microbial communities are complex and have yet to be completely resolved. These snowpack communities can be used to evaluate whether they fit niche-based or neutral assembly theories. |
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1192 |
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ISSN |
2049-2618 |
ISBN |
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yes |
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Call Number |
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Serial |
8639 |
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| Permanent link to this record |
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Author |
Christophe Barbraud, Dominique Joubert, Karine Delord |
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Title |
The demography of the White-headed Petrel at Mayes Island, Kerguelen |
Type |
Journal |
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Year |
2023 |
Publication |
Journal of Ornithology |
Abbreviated Journal |
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Issue |
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Pages |
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Keywords |
Adult survival Breeding Capture-mark-recapture Population growth rate Pterodroma lessonii Seabird |
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Abstract |
The demography and factors affecting the population dynamics of gadfly petrels (Pterodroma spp.) remain poorly known, although they constitute the most diverse genus of Procellariiformes and many species are threaten. Using a long-term individual monitoring dataset over 35 years, this study provides estimates of state-specific demographic parameters of the White-headed Petrel (Pterodroma lessonii) from Mayes Island, Kerguelen archipelago, and tests for the effects of environmental factors. Age at first breeding was 8.7 ± 2.6 years and apparent adult annual survival was 0.941 ± 0.058. Annual breeding probability was 0.356 ± 0.036 for successful breeders and 0.988 ± 0.054 for individuals that took a sabbatical year after a successful breeding event. Successful breeders that bred during two consecutive years had a lower breeding success (0.574 ± 0.048) that individuals that bred after a sabbatical year (0.655 ± 0.036). The realized population growth rate (1.073 ± 0.011) suggested that the population is increasing. There was a slight evidence for a positive effect of the Southern Annular Mode on the breeding probability of successful breeders, but no effect of sea surface temperature, chlorophyll a or wind was detected on demographic parameters. This study revealed that White-headed Petrels had a particularly high adult survival coherent with a quasi-biennial strategy and late age at first breeding. According to life history theory, populations of White-headed Petrel are thus likely to be very sensitive to small variations in adult survival, and anthropogenic factors causing additive mortality such as introduced predators will constitute serious threats for this species. |
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Programme |
109 |
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ISSN |
2193-7206 |
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yes |
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Call Number |
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Serial |
8554 |
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| Permanent link to this record |
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Author |
Christophe Leroy-Dos Santos, Elise Fourré, Cécile Agosta, Mathieu Casado, Alexandre Cauquoin, Martin Werner, Benedicte Minster, Frederic Prié, Olivier Jossoud, Leila Petit, Amaëlle Landais |
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Title |
From atmospheric water isotopes measurement to firn core interpretation in Adelie Land: A case study for isotope-enabled atmospheric models in Antarctica |
Type |
Journal |
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Year |
2023 |
Publication |
EGUsphere |
Abbreviated Journal |
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Volume |
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Issue |
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Pages |
1-20 |
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Keywords |
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Abstract |
In a context of global warming and sea level rise acceleration, it is key to estimate the evolution of the atmospheric hydrological cycle and temperature in the polar regions, which directly influence the surface mass balance of the Arctic and Antarctic ice sheets. Direct observations are available from satellite data for the last 40 years and a few weather data since the 50’s in Antarctica. One of the best ways to access longer records is to use climate proxies in firn or ice cores. The water isotopic composition in these cores is widely used to reconstruct past temperature variations. In order to progress in our understanding of the influence of the atmospheric hydrological cycle on the water isotopic composition, we first present a 2-year long time series of vapor and precipitation isotopic composition measurement at Dumont d’Urville station, in Adélie Land. We characterize diurnal variations of meteorological parameters (temperature, humidity and δ18O) for the different seasons and to determine the evolution of key relationships (δ18O versus temperature or humidity) along the year: we found mean annual slopes of 0.5 and 0.4 ‰ °C−1 for the relationship of δ18O vs. temperature in the water vapor and in the precipitation respectively. Then, this data set is used to evaluate the Atmospheric General Circulation Model ECHAM6-wiso (model version with embedded water stable isotopes) in a region where local conditions are controlled by strong katabatic winds which directly impact the isotopic signal. We show that a combination of continental (79 %) and oceanic (21 %) grid cells leads model outputs (temperature, humidity and δ18O) to nicely fit the observations, even winter extreme synoptic events are represented in the model. Therefore we demonstrate the added value of long-term water vapor isotopic composition records. Then, as a clear link is found between water vapor and precipitation isotopic composition, we evaluate how isotopic enabled models can help interpreting short firn cores. |
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Programme |
1110 |
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Approved |
yes |
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Call Number |
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Serial |
8629 |
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| Permanent link to this record |
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Author |
Christophe Leroy-Dos Santos, Elise Fourré, Cécile Agosta, Mathieu Casado, Alexandre Cauquoin, Martin Werner, Benedicte Minster, Frédéric Prié, Olivier Jossoud, Leila Petit, Amaëlle Landais |
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Title |
From atmospheric water isotopes measurement to firn core interpretation in Adélie Land: a case study for isotope-enabled atmospheric models in Antarctica |
Type |
Journal |
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Year |
2023 |
Publication |
The Cryosphere |
Abbreviated Journal |
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Volume |
17 |
Issue |
12 |
Pages |
5241-5254 |
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Abstract |
In a context of global warming and sea level rise acceleration, it is key to estimate the evolution of the atmospheric hydrological cycle and temperature in polar regions, which directly influence the surface mass balance of the Arctic and Antarctic ice sheets. Direct observations are available from satellite data for the last 40 years and a few weather data since the 1950s in Antarctica. One of the best ways to access longer records is to use climate proxies in firn or ice cores. The water isotopic composition in these cores is widely used to reconstruct past temperature variations. We need to progress in our understanding of the influence of the atmospheric hydrological cycle on the water isotopic composition of ice cores. First, we present a 2-year-long time series of vapor and precipitation isotopic composition measurement at Dumont d’Urville Station, in Adélie Land. We characterize diurnal variations of meteorological parameters (temperature, atmospheric water mixing ratio (hereafter humidity) and δ18O) for the different seasons and determine the evolution of key relationships (δ18O versus temperature or humidity) throughout the year: we find that the temperature vs. δ18O relationship is dependent on synoptic events dynamics in winter contrary to summer. Then, this data set is used to evaluate the atmospheric general circulation model ECHAM6-wiso (model version with embedded water stable isotopes) in a coastal region of Adélie Land where local conditions are controlled by strong katabatic winds which directly impact the isotopic signal. We show that a combination of continental (79 %) and oceanic (21 %) grid cells leads model outputs (temperature, humidity and δ18O) to nicely fit the observations, at different timescales (i.e., seasonal to synoptic). Therefore we demonstrate the added value of long-term water vapor isotopic composition records for model evaluation. Then, as a clear link is found between the isotopic composition of water vapor and precipitation, we assess how isotopic models can help interpret short firn cores. In fact, a virtual firn core built from ECHAM-wiso outputs explains much more of the variability observed in S1C1 isotopic record than a virtual firn core built from temperature only. Yet, deposition and post-deposition effects strongly affect the firn isotopic signal and probably account for most of the remaining misfits between archived firn signal and virtual firn core based on atmospheric modeling. |
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1110,1205 |
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Bachelor's thesis |
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1994-0416 |
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yes |
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8699 |
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Author |
Christophe Sauser, Karine Delord, Christophe Barbraud |
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Title |
Demography of cape petrels in response to environmental changes |
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Year |
2023 |
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Population Ecology |
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65 |
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1 |
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25-37 |
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Keywords |
cape petrel capture–mark–recapture population dynamics sea surface temperature southern annular mode |
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Predicting the responses of populations in changing environments is an important task for ecologists. Understanding the population dynamics of high-latitude breeding species is critical given the particularly rapid environmental changes that occur in these regions. Using long-term mark–resighting data acquired over 53-years in Pointe Géologie, Terre Adélie, Antarctica, we estimated age-specific demographic parameters and evaluated the effect of the environment on survival of a poorly known species, the cape petrel Daption capense. We then modeled the dynamics of this population using a life-history model and performed prospective and retrospective analyses to estimate the sensitivity of the population growth rate to demographic parameters, and to quantify their relative contribution. Survival of cape petrel increased with age, being 0.610 (±0.193) for juveniles, 0.739 (±0.158) for individuals from 2 to 4, and 0.920 (±0.031) for older individuals. Minimum age at first reproduction was 3 years old, the age at which all birds were recruited was 14 years, and mean age at first reproduction was 9.05 (±2.06) years. Adult survival increased over time and was positively correlated with the southern annular mode (SAM). The stochastic population growth rate was estimated at 1.019, and adult survival over age 5 made the largest contribution to variance of the population growth rate. Sensitivity analyses revealed that population regulation was mainly driven by the SAM. Our results suggest that despite the decrease in breeding success, the population of cape petrels at Pointe Géologie increased due to the increase in immature and adult survival. |
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109 |
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1438-390X |
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yes |
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8626 |
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