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Author |
E. Crubezy, O. Melnichuk, A. Alexeev |
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Title  |
Archaelogy, genetics and history 15 years of research in Yakutia (2002–2017) |
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Journal |
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Year |
2020 |
Publication |
Vestnik arheologii, antropologii i etnografii |
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Issue |
4 (51) |
Pages |
110-119 |
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Abstract |
For the past 15 years, our research has focused on the evolution of the first Yakut populations, their interaction with local tribes as well as with the Russian population, which marks the beginning of Yakutia's development from the first half of the 17th century. We conducted the excavation of tombs and we analysed the cultural, historical and paleogenetic data uncovered. A review and a synthesis of the main results published in articles and monographs informs our research directions for the future. |
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1038 |
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Bachelor's thesis |
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1811-7465 |
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yes |
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Serial |
7936 |
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Author |
L. Edel, C. Claud, C. Genthon, C. Palerme, N. Wood, T. L’Ecuyer, D. Bromwich |
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Title |
Arctic Snowfall from CloudSat Observations and Reanalyses |
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Journal |
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Year |
2020 |
Publication |
Journal of Climate |
Abbreviated Journal |
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Volume |
33 |
Issue |
6 |
Pages |
2093-2109 |
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Programme |
1013 |
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Bachelor's thesis |
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ISSN |
0894-8755 |
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yes |
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Serial |
7657 |
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Author |
Olivier Gilg, Loïc Bollache, Eve Afonso, Glenn Yannic, Niels Martin Schmidt, Lars Holst Hansen, Jannik Hansen, Benoît Sittler, Johannes Lang, Nicolas Meyer, Brigitte Sabard, Vladimir Gilg, Anita Lang, Mathilde Lebbar, Voitto Haukisalmi, Heikki Henttonen, Jérôme Moreau |
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Title |
Are gastrointestinal parasites associated with the cyclic population dynamics of their arctic lemming hosts? |
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Journal |
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Year |
2020 |
Publication |
International Journal for Parasitology: Parasites and Wildlife |
Abbreviated Journal |
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Volume |
10 |
Issue |
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Pages |
6-12 |
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Keywords |
Cestodes Eimerians Faecal prevalence Greenland Population dynamics Rodent-parasites interactions |
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Abstract |
Many rodents, including most populations of arctic lemmings (genus Dicrostonyx and Lemmus), have cyclic population dynamics. Among the numerous hypotheses which have been proposed and tested to explain this typical characteristic of some terrestrial vertebrate communities, trophic interactions have often been presented as the most likely drivers of these periodic fluctuations. The possible role of parasites has, however, only seldom been assessed. In this study, we genetically measured the prevalence of two endoparasite taxa, eimerians and cestodes, in 372 faecal samples from collared lemmings, over a five year period and across three distant sites in Northeast Greenland. Prevalence of cestodes was low (2.7% over all sites and years) and this taxon was only found at one site (although in 4 out of 5 years) in adult hosts. By contrast, we found high prevalence for eimerians (77.7% over all sites and years), which occurred at all sites, in every year, for both age classes (at the Hochstetter Forland site where both adult and juvenile faeces were collected) and regardless of reproductive and social status inferred from the characteristics of the lemming nests where the samples had been collected. Prevalence of eimerians significantly varied among years (not among sites) and was higher for juvenile than for adult lemmings at the Hochstetter Forland site. However, higher prevalence of eimerians (Pt) was only associated with lower lemming density (Nt) at one of the three sites and we found no delayed density dependence between Nt and Pt+1 to support the parasite hypothesis. Our results show that there is no clear relation between lemming density and eimerian faecal prevalence in Northeast Greenland and hence no evidence that eimerians could be driving the cyclic population dynamics of collared lemmings in this region. |
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1036 |
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Edition |
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ISSN |
2213-2244 |
ISBN |
2213-2244 |
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Approved |
yes |
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Call Number |
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Serial |
7616 |
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Author |
Aymeric. Fromant, C. M. Miskelly, J. P. Y. Arnould, C.-A. Bost |
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Title |
Artificial burrows as a tool for long-term studies of diving petrels |
Type |
Journal |
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Year |
2020 |
Publication |
Polar Biology |
Abbreviated Journal |
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Volume |
43 |
Issue |
5 |
Pages |
435-442 |
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Abstract |
Long-term studies are essential to determine demographic parameters and population trends in seabirds. However, studies to date have focused mainly on the larger and accessible species. While small seabirds (< 200 g) play a major role in marine ecosystems, their nesting habitat, which is typically fragile convoluted burrows, largely preclude long-term surveys. This study evaluated the installation of artificial burrows as a tool to facilitate ongoing long-term research on small burrowing seabirds. We tested the use and acceptance of artificial burrows during the chick-rearing period of common diving petrels (Pelecanoides urinatrix) on Mayes Island, Kerguelen Archipelago, southern Indian Ocean. The growth rate, mass at fledging and fledging rate of chicks were similar between artificial and natural burrows. Similarly, there was no difference in occupancy rate 1 and 2 years after artificial burrows were installed. The installation of artificial burrows during the chick-rearing period of a small burrowing seabird appears to be an effective way to facilitate ongoing monitoring and research and, therefore, we recommend the wider use of artificial burrows to facilitate monitoring and research of other small burrow-nesting procellariiform species. |
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Programme |
109,394 |
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Bachelor's thesis |
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ISSN |
1432-2056 |
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Approved |
yes |
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Call Number |
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Serial |
7658 |
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Author |
Vauglin I. |
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Title |
ASTEP et ASTEP+, les exoplanètes depuis Concordia |
Type |
Peer-reviewed symposium |
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Year |
2020 |
Publication |
16émes journées scientifiques du cnfra, 22-23 septembre 2020, la rochelle, france |
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Issue |
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Pages |
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Abstract |
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Programme |
1066 |
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yes |
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Serial |
8051 |
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Author |
Crouzet, N., Guillot T., Abe L., Mékarnia D., Agabi A., Schmider F.-X., Vauglin I. |
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Title |
Astronomie à Concordia : projets et besoins |
Type |
Book Chapter |
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Year |
2020 |
Publication |
Prospective INSU 2020, 6 février 2020, Paris, France |
Abbreviated Journal |
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Programme |
1066 |
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Thesis |
Bachelor's thesis |
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yes |
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Call Number |
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Serial |
7828 |
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Author |
Houstin A. |
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Title |
At-sea ecology of the Emperor penguin (Aptenodytes forsteri): Foraging strategies and evaluation of methodological and conservation tools /// Ecologie en mer du manchot empereur (Aptenodytes Forsteri) : stratégies spatio-temporelles de prospection et de recherche alimentaire et évaluation des outils méthodologiques et de conservation |
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Thesis |
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Year |
2020 |
Publication |
Phd |
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Issue |
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Pages |
pp 368 |
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137 |
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Approved |
yes |
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Serial |
8495 |
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Author |
Franz Slemr, Lynwill Martin, Casper Labuschagne, Thumeka Mkololo, Hélène Angot, Olivier Magand, Aurélien Dommergue, Philippe Garat, Michel Ramonet, Johannes Bieser |
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Title |
Atmospheric mercury in the Southern Hemisphere – Part 1: Trend and inter-annual variations in atmospheric mercury at Cape Point, South Africa, in 2007–2017, and on Amsterdam Island in 2012–2017 |
Type |
Journal |
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Year |
2020 |
Publication |
Atmospheric Chemistry and Physics |
Abbreviated Journal |
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Volume |
20 |
Issue |
13 |
Pages |
7683-7692 |
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Abstract |
The Minamata Convention On Mercury (Hg) Entered Into Force In 2017, Committing Its 116 Parties (As Of January 2019) To Curb Anthropogenic Emissions. Monitoring Of Atmospheric Concentrations And Trends Is An Important Part Of The Effectiveness Evaluation Of The Convention. A Few Years Ago (In 2017) We Reported An Increasing Trend In Atmospheric Hg Concentrations At The Cape Point Global Atmosphere Watch (Gaw) Station In South Africa (34.3535∘ S, 18.4897∘ E) For The 2007–2015 Period. With 2 More Years Of Measurements At Cape Point And The 2012–2017 Data From Amsterdam Island (37.7983∘ S, 77.5378∘ E) In The Remote Southern Indian Ocean, A More Complex Picture Emerges: At Cape Point The Upward Trend For The 2007–2017 Period Is Still Significant, But No Trend Or A Slightly Downward Trend Was Detected For The Period 2012–2017 At Both Cape Point And Amsterdam Island. The Upward Trend At Cape Point Is Driven Mainly By The Hg Concentration Minimum In 2009 And Maxima In 2014 And 2012. Using Ancillary Data On 222rn, Co, O3, Co2, And Ch4 From Cape Point And Amsterdam Island, The Possible Reasons For The Trend And Its Change Are Investigated. In A Companion Paper This Analysis Is Extended For The Cape Point Station By Calculations Of Source And Sink Regions Using Backward-trajectory Analysis. |
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416,1028 |
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Bachelor's thesis |
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ISSN |
1680-7316 |
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Approved |
yes |
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Serial |
7736 |
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Author |
Haberle, V. |
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Title |
Automatic Characterisation of Magnetic Indices with Artificial Intelligence |
Type |
Master 2 |
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Year |
2020 |
Publication |
Irap, Toulouse |
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Programme |
139 |
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yes |
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Serial |
8098 |
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Author |
Eugénie Tessier, Charles-André Bost |
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Title |
Behavioural adjustments during foraging in two diving seabirds: king and macaroni penguins |
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Journal |
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Year |
2020 |
Publication |
Marine Biology |
Abbreviated Journal |
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Volume |
167 |
Issue |
9 |
Pages |
138 |
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Abstract |
Optimal foraging theory predicts that diving predators should maximise their energy intake while minimizing the costs of their foraging activities at depth. This hypothesis was tested in two breath-hold divers that foraged in the pelagic waters off Kerguelen Island, southern Indian Ocean. Macaroni penguins (Eudyptes chrysolophus) feed predominately on crustaceans at moderate depths (ca. 50 m), while king penguins (Aptenodytes patagonicus) feed on mesopelagic fish at deep depths (ca. 100–150 m). We instrumented 22 penguins with time-depth recorders during the breeding season of the 2014 southern summer, just before they went to sea. Birds were recaptured after one to five foraging trips and the dive data were analysed on the level of single dive cycles and entire dive bouts. Both species adjusted their diving behaviour and modulated their foraging activity in accordance with their experience in their previous dives. Foraging activity during a dive (in terms of number of wiggles per dive) was greater if birds targeted the same depth as the previous dive. The penguins spent less time at the surface between two prey capture attempt dives than when a prey capture attempt dive was preceded by a non-prey capture attempt dive. Dive bout analyses showed that foraging activity increased with bout duration, while transit time during dives decreased with bout duration. Our findings are in general agreement with predictions based on optimal foraging models. The results suggest that penguins anticipated the depth of their next dive based on their encounter of a prey patch in the previous dive and optimized their chances of feeding success by spending minimal time at the surface and in transit to the patch depth. Once penguins detected a prey patch, these behavioural adjustments allowed them to rapidly return to that patch, increasing their chances of feeding again before the prey disperses. |
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Programme |
394 |
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ISSN |
1432-1793 |
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yes |
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Call Number |
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Serial |
7737 |
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