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Author |
Guillot T. |
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Title ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
Science of temperate exoplanets: The lessons from Juno |
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Book Chapter |
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Year |
2021 |
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1066 |
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Bachelor's thesis |
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yes |
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7827 |
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Title ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
Scouring by rafted ice and cryogenic patterned ground preserved in a Palaeoproterozoic equatorial proglacial lagoon succession, eastern India, Nuna supercontinent |
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Journal |
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Year |
2021 |
Publication |
Marine and Petroleum Geology |
Abbreviated Journal |
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Volume |
123 |
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Pages |
104766 |
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Keywords |
Ice-rafted debris Iceberg scouring India Palaeoproterozoic Permafrost Proglacial Reticulate ice |
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316 |
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0264-8172 |
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yes |
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6471 |
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Author |
Christophe Sauser, Karine Delord, Christophe Barbraud |
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Title ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
Sea ice and local weather affect reproductive phenology of a polar seabird with breeding consequences |
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Journal |
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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 ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
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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Call Number |
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8417 |
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Title ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
Seabird population changes following mammal eradication at oceanic Saint-Paul Island, Indian Ocean |
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Journal |
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Year |
2021 |
Publication |
Journal for Nature Conservation |
Abbreviated Journal |
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Volume |
63 |
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Pages |
126049 |
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Keywords |
Island restoration Petrels Population growth rate Rats Shearwaters Terns |
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109 |
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ISSN |
1617-1381 |
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yes |
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Serial |
8459 |
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Author |
Anzhou Cao, Zheng Guo, Xiaoyu Qi, Peiliang Li, Hailun He |
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Title ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
Seasonal and nodal variations of predominant tidal constituents in the global ocean |
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Journal |
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Year |
2021 |
Publication |
Continental Shelf Research |
Abbreviated Journal |
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Volume |
217 |
Issue |
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Pages |
104372 |
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Keywords |
Fitting Modified two-step harmonic analysis Nodal modulation Seasonal variation Tide gauge Tides |
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Abstract |
Tides are one of the basic types of ocean water motions. Previous studies have reported that the M2 constituent exhibits seasonal variations (annual cycles) in some regions. However, based on the newly proposed method of modified two-step harmonic analysis (HA) and its application at 240 global tide gauges, we find that the M2 constituent as well as the S2 and K1 do not have significant seasonal variations at these tide gauges. The seasonal variations of the M2 constituent reported in previous studies are caused by its satellites, the H1 and H2 constituents, which are not resolved in these studies due to the short time window (one month or three months) used in HA. Because the frequency of the H1 (H2) constituent is equal to that of the M2 minus (plus) the frequency of annual cycles, the superposition of the M2, H1 and H2 constituents with constant amplitudes is equivalent to the M2 constituent with seasonally varying amplitudes. Compared with the new method, some adaptations to traditional HA aiming to capture variations in amplitudes and phase lags of constituents have some limitations, because they either neglect some satellites of the major constitutes or introduce spurious fluctuations resulting from an unreasonably large number of independent points. The nodal modulations of predominant constituents are also explored in this study. On the global scale, the nodal modulations of the M2, K1 and O1 constituents agree with the theoretical predictions, except a cold spot region with reduced nodal modulation in the Gulf of Maine and a hot spot region with enhanced nodal modulation in the South China Sea for the M2. Nodal modulation is also found for the S2 constituent (in theory, the S2 has no nodal modulation), which is 0.8% averaged at 164 tide gauges where the S2 is not too weak. |
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688 |
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0278-4343 |
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yes |
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8032 |
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Title ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
Seasonal variation of mercury contamination in Arctic seabirds: A pan-Arctic assessment |
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Journal |
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Year |
2021 |
Publication |
Science of The Total Environment |
Abbreviated Journal |
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Volume |
750 |
Issue |
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Pages |
142201 |
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Keywords |
Feathers Metal Polar Seasonal variation Top predators |
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Abstract |
Mercury (Hg) is a natural trace element found in high concentrations in top predators, including Arctic seabirds. Most current knowledge about Hg concentrations in Arctic seabirds relates to exposure during the summer breeding period when researchers can easily access seabirds at colonies. However, the few studies focused on winter have shown higher Hg concentrations during the non-breeding period than breeding period in several tissues. Hence, improving knowledge about Hg exposure during the non-breeding period is crucial to understanding the threats and risks encountered by these species year-round. We used feathers of nine migratory alcid species occurring at high latitudes to study bird Hg exposure during both the breeding and non-breeding periods. Overall, Hg concentrations during the non-breeding period were ~3 times higher than during the breeding period. In addition, spatial differences were apparent within and between the Atlantic and Pacific regions. While Hg concentrations during the non-breeding period were ~9 times and ~3 times higher than during the breeding period for the West and East Atlantic respectively, Hg concentrations in the Pacific during the non-breeding period were only ~1.7 times higher than during the breeding period. In addition, individual Hg concentrations during the non-breeding period for most of the seabird colonies were above 5 ?g g?1 dry weight (dw), which is considered to be the threshold at which deleterious effects are observed, suggesting that some breeding populations might be vulnerable to non-breeding Hg exposure. Since wintering area locations, and migration routes may influence seasonal Hg concentrations, it is crucial to improve our knowledge about spatial ecotoxicology to fully understand the risks associated with Hg contamination in Arctic seabirds. |
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388 |
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0048-9697 |
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yes |
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8026 |
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Author |
Christophe Barbraud, Karine Delord |
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Title ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
Selection against immigrants in wild seabird populations |
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Journal |
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Year |
2021 |
Publication |
Ecology Letters |
Abbreviated Journal |
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24 |
Issue |
1 |
Pages |
84-93 |
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Dispersal fitness immigrant seabirds sex-biased dispersal |
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109 |
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1461-0248 |
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8418 |
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Author |
Mike Lockwood, Carl Haines, Luke A. Barnard, Mathew J. Owens, Chris J. Scott, Aude Chambodut, Kathryn A. McWilliams |
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Title ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
Semi-annual, annual and Universal Time variations in the magnetosphere and in geomagnetic activity: 4. Polar Cap motions and origins of the Universal Time effect |
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Journal |
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Year |
2021 |
Publication |
Journal of Space Weather and Space Climate |
Abbreviated Journal |
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Volume |
11 |
Issue |
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Pages |
15 |
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139 |
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2115-7251 |
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8076 |
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Title ![sorted by Title field, ascending order (up)](img/sort_asc.gif) |
Sexual segregation in a sexually dimorphic seabird: a matter of spatial scale |
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Journal |
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Year |
2021 |
Publication |
Peer Community in Ecology |
Abbreviated Journal |
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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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Call Number |
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8434 |
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