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Anne POSTEC |
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2008 |
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408 |
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yes |
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5070 |
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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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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 |
Annell H., Scoates J., Weis D. and Giret A. |
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Title |
Petrology of flodd basalts at the tholeiitic-alkalic transition and phenocryst compositions, Mt Marion Dufresne, Kerguelen Archipelago, Southern Indian Ocean |
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Journal Article |
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Year |
2007 |
Publication |
The Canadian Mineralogist |
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45 |
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444 |
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Bachelor's thesis |
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0008-4476 |
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yes |
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5052 |
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Combined influence of meso-scale circulation and bathymetry on the foraging behaviour of a diving predator, the king penguin (Aptenodytes patagonicus) |
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Year |
2016 |
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Progress in Oceanography |
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141 |
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1-16 |
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394 |
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0079-6611 |
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yes |
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8284 |
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Title |
Cometary dust, present understanding and open questions after the Rosetta mission |
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Peer-reviewed symposium |
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2018 |
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European Planetary Science Congress 2018 |
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12 |
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EPSC2018-479-1 |
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Abstract |
In-situ observation of several comets by spacecraft, the collection and delivery to Earth of dust from a cometary coma, remote sensing of comets, and comparison with the properties of interplanetary dust, some of which is cometary, collected at Earth, have provided many new insights to the composition and structure of cometary dust. These investigations have raised new, more detailed questions, suggesting future directions for comet research. |
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1120 |
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yes |
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7923 |
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Author |
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Title |
Cometary Dust |
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Journal |
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Year |
2018 |
Publication |
Space Science Reviews |
Abbreviated Journal |
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Volume |
214 |
Issue |
3 |
Pages |
64 |
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1120 |
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1572-9672 |
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yes |
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Serial |
7896 |
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Author |
Anouk Charpentier |
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Title |
Etude du Réseau trophique benthique de la baie de Port-aux-Français aux Iles Kerguelen |
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Master 2 |
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Year |
2018 |
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Abbreviated Journal |
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39 |
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Abstract |
Kelp ecosystems which are present throughout the world are biodiversity hot-spots. These ecosystems which are poorly studied especially in antarctic and sub-antarctic regions are however sensitive to climate change. The point of this study is therefore to describe this type of ecosystem. For this, stable isotopes of carbon, nitrogen and sulfur were used and measured for different carbon sources as well as several species of consumers. The contribution of these food sources were then estimated using the mixing model simmr. Two models were studied, the first including values of carbon nitrogen and sulfur and the second including only carbon and nitrogen values. Results showed that the use of sulfur isotopes in association with carbon and nitrogen allows for a better distinction between food sources and therefore a better estimation of their contribution to consumers diets. The results also showed that the kelp Macrocystis pyrifera which is the most abundant carbon source contributes little to primary consumers diets. Indeed, the consumers seem to prefer Ulva sp. and suspended organic matter. |
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1044 |
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yes |
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7130 |
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Title |
Stable Isotope Trajectory Analysis (SITA): A new approach to quantify and visualize dynamics in stable isotope studies |
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Year |
2022 |
Publication |
Ecological Monographs |
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Volume |
92 |
Issue |
2 |
Pages |
e1501 |
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Keywords |
changes composition dynamics food web functioning spatial stable isotope structure temporal trajectories |
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Abstract |
Ecologists working with stable isotopes have to deal with complex datasets including temporal and spatial replication, which makes the analysis and the representation of patterns of change challenging, especially at high resolution. Due to the lack of a commonly accepted conceptual framework in stable isotope ecology, the analysis and the graphical representation of stable isotope spatial and temporal dynamics of stable isotope value at the organism or community scale remained in the past often descriptive and qualitative, impeding the quantitative detection of relevant functional patterns. The recent community trajectory analysis (CTA) framework provides more explicit perspectives for the analysis and the visualization of ecological trajectories. Building on CTA, we developed the Stable Isotope Trajectory Analysis (SITA) framework, to analyze the geometric properties of stable isotope trajectories on n-dimensional (n ? 2) spaces of analysis defined analogously to the traditional multivariate spaces (?) used in community ecology. This approach provides new perspectives into the quantitative analysis of spatio-temporal trajectories in stable isotope spaces (??) and derived structural and functional dynamics (?? space). SITA allows the calculation of a set of trajectory metrics, based on either trajectory distances or directions, and new graphical representation solutions, both easily performable in an R environment. Here, we illustrate the use of our approach by reanalyzing previously published datasets from marine, terrestrial, and freshwater ecosystems. We highlight the insights provided by this new analytic framework at the individual, population, community, and ecosystems levels, and discuss applications, limitations, and development potential. |
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109 |
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1557-7015 |
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yes |
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8401 |
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Author |
Antoine A., Johnson M.; Labrousse S., Goulet P., Chevallay M., Laborie B., Picard B., Guinet C., Nerini D., Charrassin J.-b., Heerah K. |
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Beneath the Antarctic sea-ice: Fine-scale analysis of Weddell seal behavior and predator-prey interactions, using micro-sonar data in Terre Adélie. |
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Peer-reviewed symposium |
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2023 |
Publication |
Scientific commitee on antarctic research symposium 2023, christchurch, new zealand |
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1182 |
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yes |
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8746 |
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Title |
Tracking Five Millennia of Horse Management with Extensive Ancient Genome Time Series |
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Year |
2019 |
Publication |
Cell |
Abbreviated Journal |
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Volume |
177 |
Issue |
6 |
Pages |
1419-1435.e31 |
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Keywords |
ancient DNA animal breeding diversity domestication equestrian civilizations extinct lineages horses management mules selection |
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1038 |
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0092-8674, 1097-4172 |
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8011 |
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