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Lemonnier C, Schull Q, Stier A, Boonstra R, Delahanty B, Lefol E, Durand L, Robin J-p, Criscuolo F, Bize P &Amp; Va Viblanc |
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Coping with socially stressful environment in colonial seabirds: a test of adaptive phenotype programming in king penguins |
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Peer-reviewed symposium |
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2021 |
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119 |
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8337 |
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Author |
Lemonnier C, Schull Q, Stier A, Boonstra R, Delahanty B, Lefol E, Durand L, Robin Jp, Criscuolo F, Bize P, Viblanc Va |
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Title |
Coping with socially stressful environments in colonial seabirds: a test of adaptive phenotype programming in king penguins |
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Peer-reviewed symposium |
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2021 |
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Coloniality is associated with various benefits and costs for animals affecting their fitness. Breeding colonies are heterogeneous both in terms of physical and social parameters, thus, breeding territories are of different quality relative to their location within the colony. In king penguins, increased conspecific density has been correlated with increased stress level in individual birds, suggesting a cost of colonial breeding. We used a cross-fostering approach to question the relationship linking breeding location, phenotype and reproduction success. We crossfostered eggs shortly after laying within and between high-and low-density colony areas. This design allowed us to unravel the influences of early genetic and maternal effects together with rearing environments on chick growth trajectories, stress physiology and survival. We tested whether chick phenotype is determined at birth to match their early environment or if higher social density conferred an advantage for reproduction. |
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119 |
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8105 |
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Author |
Lisa-Marie Mazzolo |
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Master 2 |
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2021 |
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337 |
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8357 |
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Author |
Lucia Gualtieri, Etienne Bachmann, Frederik J Simons, Jeroen Tromp |
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Title |
Generation of secondary microseism Love waves: effects of bathymetry, 3-D structure and source seasonality |
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2021 |
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Geophysical Journal International |
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226 |
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1 |
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192-219 |
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133 |
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0956-540X |
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yes |
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8016 |
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Author |
Lucie Aulus-Giacosa |
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2021 |
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1041 |
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yes |
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8354 |
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Author |
Lucien Goulet |
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Type |
Master 1 |
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Year |
2021 |
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Abbreviated Journal |
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23 |
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Dans un contexte de changement climatique, il est important de déterminer avec précision l’évolution actuelle et future des processus environnementaux pouvant avoir un impact sur les populations. Ainsi, connaitre l’évolution saisonnière du couvert neigeux s’avère crucial car c’est une composante du cycle de l’eau, jouant un rôle de stockage au printemps. La télédétection spatiale joue un rôle important pour le suivi de l’évolution du manteau neigeux aux échelles continentale et régionale. Des études ont déjà mis en avant certains avantages du radar en bande X (notamment son signal de phase). L’analyse du lien entre la réponse de plusieurs paramètres polarimétriques (K0, K3, K4, K7, CCOH et le CPD) et des données météorologiques (dont l’épaisseur du manteau), a permis de conforter l’utilité de la bande X pour la cible neige. On note un intérêt pour l’intensité totale (K0) qui s’avère être intéressante pour l’étude de la hauteur totale de neige. La différence de phase (CPD), ne s’avère pas concluante pour retracer l’épaisseur totale du manteau neigeux dans notre cas d’application. En revanche, elle offre un bon diagnostic des chutes de neige fraiche et pour la cartographie du métamorphisme de la neige. |
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1126 |
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8756 |
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Title |
The ? Pictoris b Hill sphere transit campaign – I. Photometric limits to dust and rings |
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Journal |
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Year |
2021 |
Publication |
Astronomy & Astrophysics |
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Volume |
648 |
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A15 |
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1066 |
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0004-6361, 1432-0746 |
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yes |
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8195 |
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Journal |
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2021 |
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Communications Earth & Environment |
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2 |
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1 |
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1-8 |
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Keywords |
Physical oceanography |
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688 |
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2662-4435 |
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8387 |
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Author |
M. Legrand, R. Weller, S. Preunkert, B. Jourdain |
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Title |
Ammonium in Antarctic Aerosol: Marine Biological Activity Versus Long-Range Transport of Biomass Burning |
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Year |
2021 |
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Geophysical Research Letters |
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Volume |
48 |
Issue |
11 |
Pages |
e2021GL092826 |
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Keywords |
aerosol black carbon ammonium Antarctic biomass burning et marine biota oxalate potassium |
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Abstract |
Year-round records of the ionic composition of Antarctic aerosol were obtained at the inland Dome C (DC) and coastal Neumayer (NM) sites, with additional observations of black carbon (BC) at NM. Discussions focus on the origin of ammonium in Antarctica. This first Antarctic atmospheric study of several species emitted by biomass burning (BB) indicates that BC and oxalate reach a maximum in October in relation to BB activity in the southern hemisphere. Ammonium reaches a maximum 2 months later, suggesting that BB remains a minor ammonium source there. The ammonium maximum in December coincides with the occurrence of diatom blooms in the austral ocean, suggesting that oceanic ammonia emissions are the main source of ammonium in Antarctica. The ammonium to sulfur-derived biogenic species molar ratio of 0.15 in summer suggests far lower ammonia emissions from the Antarctic oceans than midlatitude southern oceans. |
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1944-8007 |
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8252 |
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2021 |
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Marine pollution bulletin |
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Volume |
169 |
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112559 |
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At-sea survey Frontal system Garbage patch Plastic litter Southern Indian Ocean |
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109 |
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Bachelor's thesis |
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0025-326X |
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7939 |
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