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Title |
Seabird Migration Strategies: Flight Budgets, Diel Activity Patterns, and Lunar Influence |
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Journal |
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Year |
2021 |
Publication |
Frontiers in Marine Science |
Abbreviated Journal |
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Volume |
8 |
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Abstract |
Every year, billions of birds undertake extensive migrations between breeding and non-breeding areas, facing challenges that require behavioural adjustments, particularly to flight timing and duration. Such adjustments in daily activity patterns and the influence of extrinsic factors (e.g., environmental conditions, moonlight) have received much more research attention in terrestrial than marine migrants. Taking advantage of the widespread deployment in recent decades of combined light-level geolocator-immersion loggers, we investigated diel organisation and influence of the moon on flight activities during the non-breeding season of 21 migrant seabird species from a wide taxonomic range (6 families, 3 orders). Migrant seabirds regularly stopped (to either feed or rest) during migration, unlike some terrestrial and wetland birds which fly non-stop. We found an overall increase for most seabird species in time in flight and, for several species, also in flight bout duration, during migration compared to when resident at the non-breeding grounds. Additionally, several nocturnal species spent more of the day in flight during migration than at non-breeding areas, and vice versa for diurnal species. Nocturnal time in flight tended to increase during full moon, both during migration and at the non-breeding grounds, depending on species. Our study provides an extensive overview of activity patterns of migrant seabirds, paving the way for further research on the underlying mechanisms and drivers. |
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330,1036 |
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Bachelor's thesis |
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2296-7745 |
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yes |
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8417 |
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Author |
Alain Manceau, Romain Brossier, Sarah E. Janssen, Tylor J. Rosera, David P. Krabbenhoft, Yves Cherel, Paco Bustamante, Brett A. Poulin |
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Title |
Mercury Isotope Fractionation by Internal Demethylation and Biomineralization Reactions in Seabirds: Implications for Environmental Mercury Science |
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Journal |
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Year |
2021 |
Publication |
Environmental Science & Technology |
Abbreviated Journal |
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Volume |
55 |
Issue |
20 |
Pages |
13942-13952 |
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109 |
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0013-936X |
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yes |
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8427 |
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Year |
2021 |
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Geoscientific Model Development |
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Volume |
14 |
Issue |
6 |
Pages |
3487-3510 |
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411 |
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1991-959X |
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yes |
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8428 |
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Title |
Preface to the Focus Section on European Seismic Networks and Associated Services and Products |
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Year |
2021 |
Publication |
Seismological Research Letters |
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Volume |
92 |
Issue |
3 |
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1483-1490 |
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133 |
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0895-0695 |
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yes |
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8429 |
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Author |
Christophe Sauser, Karine Delord, Christophe Barbraud |
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Title |
Sea ice and local weather affect reproductive phenology of a polar seabird with breeding consequences |
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Year |
2021 |
Publication |
Ornithological Applications |
Abbreviated Journal |
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Volume |
123 |
Issue |
4 |
Pages |
duab032 |
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109 |
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0010-5422 |
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yes |
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8431 |
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Title |
Sexual segregation in a sexually dimorphic seabird: a matter of spatial scale |
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Year |
2021 |
Publication |
Peer Community in Ecology |
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Volume |
1 |
Issue |
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Pages |
100025 |
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Abstract |
A recommendation of: Christophe Barbraud, Karine Delord, Akiko Kato, Paco Bustamante, Yves Cherel Sexual segregation in a highly pagophilic and sexually dimorphic marine predator https://doi.org/10.1101/472431 |
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109 |
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2606-4979 |
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yes |
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8434 |
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Title |
The Marine Vegetation of the Kerguelen Islands: History of Scientific Campaigns, Inventory of the Flora and First Analysis of Its Biogeographical Affinities |
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2021 |
Publication |
Cryptogamie, Algologie |
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42 |
Issue |
12 |
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173-216 |
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1044 |
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0181-1568, 1776-0984 |
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yes |
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8440 |
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2021 |
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232 pages |
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388 |
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978-2-330-15652-7 |
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yes |
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8448 |
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Author |
Von Beckerath, X., Eitzinger, B., Sittler, B., Gilg, O., Yannic, G., Klein, A.-M., Benadi, G. |
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Title |
Long-term monitoring reveals topographical features and vegetation explain winter habitat use of an Arctic rodent |
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Peer-reviewed symposium |
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2021 |
Publication |
Annual meeting of the icelandic ecological society. nordic society oikos, reykjavik, iceland, 16-17 april 2021 |
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1036 |
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yes |
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8450 |
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Author |
Garcin N, Viblanc VA, Schull Q, Michaux D, Reichert S, Robin JP, Bize P, Stier A |
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Title |
Naturally equipped to resist stress |
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Peer-reviewed symposium |
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2021 |
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Society for experimental biology annual conference. poster. actes du colloque |
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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. |
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8454 |
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