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Desoubeaux G., Boulinier T., Jorry T., Bocquet C., Lemonnier C., Robin J-p., Bize P., Baron J., Chesnay A., Bailly E., Stier A., Viblanc V.A |
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Fungal contamination in the environment of penguin communities in the French Southern Territories |
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Peer-reviewed symposium |
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2023 |
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11th International Penguin Conference, 4-9 September 2023, Viña del Mar, Chile |
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119 |
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8729 |
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Lemonnier C., Bize P., Stier A., Cillard A., Montblanc M., Robin J-p., Handrich Y., Bost C-a., Viblanc V. |
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Title |
Compensating for harsh conditions at sea: plasticity of king penguin foraging strategies facing an experimental increase in workload |
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Peer-reviewed symposium |
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2023 |
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11th International Penguin Conference., 4-9 September 2023., Viña del Mar., Chile |
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8730 |
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Lemonnier C., Schull Q., Stier A., Boonstra R., Delahanty B., Lefol E., Durand L., Pardonnet S., Robin Jp., Criscuolo F., Bize P., Viblanc Va |
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Title |
Adaptive phenotypic programming to social density in king penguins |
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Peer-reviewed symposium |
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Year |
2023 |
Publication |
11th international penguin conference., 4-9 september 2023., viña del mar., chile |
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119 |
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8731 |
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Baltzer A., Gourillon L., Lacombe V., Guilhermic C., Nardelli P., Howa H., Pillet V., Nicolas J., Tafflet A., Verdun J. |
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Le projet KONBHAS : Kongsfjorden New Benthic Habitats |
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Peer-reviewed symposium |
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2023 |
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19émes journées scientifiques du CNFRA, 03-05 mai 2023, Paris France |
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Communication n°469 |
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1223 |
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yes |
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8665 |
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Stier A., Viblanc V., Kauffmann M., Pardonnet S., Gineste B., Robin Jp. & Bize P. |
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Title |
‘Ticks in paradise’ : effets de l’éradication des ectoparasites chez le manchot royal durant la reproduction à terre |
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Peer-reviewed symposium |
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2023 |
Publication |
19émes journées scientifiques du cnfra, 03-05 mai 2023, paris france |
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Communication n°476 |
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Les milieux polaires et subpolaires ne sont pas dépourvus de parasites. Chez les manchots royaux, les ectoparasites tels que les tiques (Ixodes uriae) sont suspectés d’avoir des effets marqués sur la santé et le succès reproducteur des adultes. En utilisant un traitement expérimental réduisant drastiquement l’abondance d’ectoparasites chez des adultes reproducteurs, nous avons pu démontrer que l’infestation par les ectoparasites induit une augmentation du stress physiologique caractérisé par des taux élevés de corticostérone (glucocorticoïde) et une situation de stress oxydant. Bien que l’éradication des ectoparasites n’ait pas d’influence notable sur le succès d’éclosion des œufs ou la survie des poussins durant l’élevage, le traitement améliore visiblement la croissance des poussins jusqu’à l’émancipation, avec des effets positifs probables sur leur survie future. Il semble donc que les ectoparasites exercent une pression de sélection naturelle non-négligeable chez le manchot royal. |
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119 |
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yes |
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8666 |
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Noiret A., Viblanc V., Bocquet C., Lemmonier C., Lewden A., Robin Jp., Bize P. &Amp; Stier A. |
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Title |
HotPenguin: stress thermique et agressivité soutiennent l’hypothèse température-agression chez le manchot royal en période de reproduction |
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Peer-reviewed symposium |
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Year |
2023 |
Publication |
19émes journées scientifiques du CNFRA, 03-05 mai 2023, Paris France |
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Les endothermes polaires et subpolaires, adaptés à un climat froid, pourraient se révéler particulièrement sensibles au stress thermique dans un contexte de réchauffement global. L'hypothèse température-agression – qui propose un lien causal entre températures ambiantes élevées et motivation agressive – pourrait accentuer le stress thermique. Essentiellement étudiée pour des raisons socio-économiques, l’hypothèse est peu investiguée chez les espèces sauvages. L’étude de manchots royaux en période de reproduction (n= 85, Crozet), a permis de mettre en évidence des relations positives entre paramètres climatiques (température, radiation solaire), température sous-cutanée, indicateurs comportementaux de stress thermique (halètement, écartement des ailerons) et agressivité envers les congénères. Nos résultats ouvrent de nouvelles perspectives écologiques pour l'hypothèse température-agression, et encouragent l'étude du stress thermique dans les écosystèmes polaires. |
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119 |
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yes |
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8667 |
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Author |
Hennion Françoise, Binet Françoise |
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Title |
Adaptation des plantes subantarctiques au changement climatique et dynamique et trajectoires sol-plante |
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Peer-reviewed symposium |
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Year |
2023 |
Publication |
19émes journées scientifiques du cnfra, 03-05 mai 2023, paris france |
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Communication n°468 |
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Les îles subantarctiques de Kerguelen sont soumises à un changement climatique rapide et intense. Ces îles abritent des espèces végétales endémiques de grand intérêt dans l’hémisphère sud. La flore comporte peu d’espèces et leurs interactions sont mal connues. De tels systèmes pourraient être particulièrement fragiles, et a contrario leur résilience dépendre plus fortement des interactions biotiques entre espèces. Le projet PlantADAPT vise à évaluer et suivre la réponse des espèces de plantes endémiques des îles Kerguelen au changement climatique, en prenant en compte le système plante-sol intégré et les interactions biotiques (plante holobionte). Dans l’objectif d’évaluer les parts respectives de la plasticité phénotypique et de l’adaptation locale dans la variation phénotypique, l’expérience en Jardins Communs est un dispositif déterminant. Nous développons aussi des approches d’écologie fonctionnelle des communautés microbiennes et du système sol associé. |
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1116 |
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8668 |
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Le Bris T., Barruol, G., Gimbert F., Le Meur E., Zigone, D. |
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Cryosismicité du glacier de l’Astrolabe : glissement basal, fracturation et modulation tidale |
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Peer-reviewed symposium |
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2023 |
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19émes journées scientifiques du cnfra, 03-05 mai 2023, paris france |
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Communication n°466 |
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1214 |
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8669 |
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Armynot du Chatelet E. |
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La valorisation scientifique passe par la médiation |
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2023 |
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19émes journées scientifiques du cnfra, 03-05 mai 2023, paris france |
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Communication n°451 |
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1200 |
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8670 |
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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 |
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Peer-reviewed symposium |
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2023 |
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19émes journées scientifiques du cnfra, 03-05 mai 2023, paris france |
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Communication n°433 |
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139 |
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8671 |
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