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Author |
Haberle, V. |
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Title |
Automatic Characterisation of Magnetic Indices with Artificial Intelligence |
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Master 2 |
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2020 |
Publication |
Irap, Toulouse |
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139 |
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8098 |
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Author |
Panhelleux Léa &Amp; Lochin Pierre |
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Title |
Télédétection appliquée au suivi des dynamiques de la végétation des îles Kerguelen |
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Master 2 |
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Year |
2020 |
Publication |
Projet professionnel, master 2 Telenvi Université Rennes 2 |
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136 |
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yes |
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8100 |
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Author |
Alexandra Lavrillier |
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Title |
“Spirit-Charged” Humans in Siberia: Interrelations between the Notions of the Individual (“Spirit Charge” and “Active Imprint”) and (Ritual) Action |
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Year |
2020 |
Publication |
Arctic Anthropology |
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Volume |
57 |
Issue |
1 |
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72-99 |
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This paper shows how a society imagines human individuals and their power to act upon spirits both ritually and materially. Based on the author’s fieldwork (from 1994 to 2019), it analyzes the emic concept onnir, which is omnipresent in the daily activities and the past and present collective/individual rituals of Siberian Evenki and Even. Each human owns a specific fluctuating “charge made of spirits” and an “active imprint” that empowers the human to act, perform rituals, develop talents, and create. Even after death, this “imprint” affects everything and everyone a human ever touched. Onnir defines the interrelations between the individual, the spirits of his or her own “charge,” and the spirits of the universe in an “active agent”-“patient” relationship. This paper contributes to studies of the notions of the individual, “playing” as a ritual means, the acceptance/rejection of neoshamans, neorituals, and the (ritual) agency of ordinary individuals. |
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1127 |
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0066-6939, 1933-8139 |
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8079 |
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Author |
Petra Quillfeldt, Henri Weimerskirch, Karine Delord, Yves Cherel |
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Title |
Niche switching and leapfrog foraging: movement ecology of sympatric petrels during the early breeding season |
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Journal |
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Year |
2020 |
Publication |
Movement Ecology |
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8 |
Issue |
1 |
Pages |
23 |
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Keywords |
Breeding schedule Central-place forager Foraging ecology Tracking |
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The timing of events in the early part of the breeding season is crucially important for successful reproduction. Long-lived animals that migrate large distances independently of each other meet at the breeding sites to re-establish their pair bonds and coordinate their breeding duties with their partners. |
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109 |
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2051-3933 |
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8080 |
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Marina Renedo, Paco Bustamante, Yves Cherel, Zoyne Pedrero, Emmanuel Tessier, David Amouroux |
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Title |
A “seabird-eye” on mercury stable isotopes and cycling in the Southern Ocean |
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Journal |
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Year |
2020 |
Publication |
Science of The Total Environment |
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Volume |
742 |
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Pages |
140499 |
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Keywords |
Biogeochemistry Latitude Methylmercury Penguins Skuas |
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Abstract |
Since mercury (Hg) biogeochemistry in the Southern Ocean is minimally documented, we investigated Hg stable isotopes in the blood of seabirds breeding at different latitudes in the Antarctic, Subantarctic and Subtropical zones. Hg isotopic composition was determined in adult penguins (5 species) and skua chicks (2 species) from Adélie Land (66°39′S, Antarctic) to Crozet (46°25′S, Subantarctic) and Amsterdam Island (37°47′S, Subtropical). Mass-dependent (MDF, δ202Hg) and mass-independent (MIF, Δ199Hg) Hg isotopic values separated populations geographically. Antarctic seabirds exhibited lower δ202Hg values (−0.02 to 0.79 ‰, min-max) than Subantarctic (0.88 to 2.12 ‰) and Subtropical (1.44 to 2.37 ‰) seabirds. In contrast, Δ199Hg values varied slightly from Antarctic (1.31 to 1.73 ‰) to Subtropical (1.69 to 2.04 ‰) waters. The extent of methylmercury (MeHg) photodemethylation extrapolated from Δ199Hg values was not significantly different between locations, implying that most of the bioaccumulated MeHg was of mesopelagic origin. The larger increase of MDF between the three latitudes co-varies with MeHg concentrations. This supports an increasing effect of specific biogenic Hg pathways from Antarctic to Subtropical waters, such as Hg biological transformations and accumulations. This “biogenic effect” among different productive southern oceanic regions can also be related to different mixed layer depth dynamics and biological productivity turnover that specifically influence the vertical transport between the mesopelagic and the photic zones. This study shows the first Hg isotopic data of the Southern Ocean at large scale and reveals how regional Southern Ocean dynamics and productivity control marine MeHg biogeochemistry and the exposure of seabirds to Hg contamination. |
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109 |
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0048-9697 |
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8081 |
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Author |
Sittler, B., Lang, J., Gilg, O., Aebischer, A. |
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Title |
Snowy owls in Greenland on the brink? Insights from 32 years of long-term monitoring on Traill Island |
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Peer-reviewed symposium |
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Year |
2020 |
Publication |
5th international snowy owl working group. ISOWG, 9-13 march 2020, Pasvik, Norway |
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1036 |
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8466 |
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Author |
Launay M |
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Title |
Analyse de placettes de recrutement pour le suivi des communautés marines benthiques côtières aux Iles Kerguelen (Terres australes françaises) |
Type |
Master 2 |
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Year |
2020 |
Publication |
Master 2 Systématique, Evolution et Paléontologie, Sorbonne Université / Muséum national d'Histoire naturelle de Paris / Observatoire des Sciences de l'Univers THETA / Université de Bourgogne |
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36 pp |
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1044 |
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yes |
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8066 |
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Author |
Calas A |
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Title |
Image analysis of settlement plates for monitoring marine benthic communities of the Kerguelen Islands |
Type |
Master 2 |
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Year |
2020 |
Publication |
Master 2 IMBRSea (International Master of Science in Marine Biological Resources), Université de Gand / Université de Bourgogne |
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35 pp |
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1044 |
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yes |
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8068 |
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Author |
Yves Cherel |
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Title |
A review of Southern Ocean squids using nets and beaks |
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2020 |
Publication |
Marine Biodiversity |
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50 |
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6 |
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98 |
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This review presents an innovative approach to investigate the teuthofauna from the Southern Ocean by combining two complementary data sets, the literature on cephalopod taxonomy and biogeography, together with predator dietary investigations. Sixty squids were recorded south of the Subtropical Front, including one circumpolar Antarctic (Psychroteuthis glacialis Thiele, 1920), 13 circumpolar Southern Ocean, 20 circumpolar subantarctic, eight regional subantarctic, and 12 occasional subantarctic species. A critical evaluation removed five species from the list, and one species has an unknown taxonomic status. The 42 Southern Ocean squids belong to three large taxonomic units, bathyteuthoids (n = 1 species), myopsids (n = 1), and oegopsids (n = 40). A high level of endemism (21 species, 50%, all oegopsids) characterizes the Southern Ocean teuthofauna. Seventeen families of oegopsids are represented, with three dominating families, onychoteuthids (seven species, five endemics), ommastrephids (six species, three endemics), and cranchiids (five species, three endemics). Recent improvements in beak identification and taxonomy allowed making new correspondence between beak and species names, such as Galiteuthis suhmi (Hoyle 1886), Liguriella podophtalma Issel, 1908, and the recently described Taonius notalia Evans, in prep. Gonatus phoebetriae beaks were synonymized with those of Gonatopsis octopedatus Sasaki, 1920, thus increasing significantly the number of records and detailing the circumpolar distribution of this rarely caught Southern Ocean squid. The review extends considerably the number of species, including endemics, recorded from the Southern Ocean, but it also highlights that the corresponding species to two well-described beaks (Moroteuthopsis sp. B and Psychroteuthis sp. B) are still unknown. |
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109 |
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1867-1624 |
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8072 |
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Author |
Julien Collet, Henri Weimerskirch |
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Title |
Albatrosses can memorize locations of predictable fishing boats but favour natural foraging |
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Journal |
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Year |
2020 |
Publication |
Proceedings of the royal society b: biological sciences |
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287 |
Issue |
1932 |
Pages |
20200958 |
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Keywords |
albatrosses anthropogenic food cognition in the wild fisheries individual consistency resource predictability |
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Human activities generate food attracting many animals worldwide, causing major conservation issues. The spatio-temporal predictability of anthropogenic resources could reduce search costs for animals and mediate their attractiveness. We investigated this through GPS tracking in breeding black-browed albatrosses attracted to fishing boats. We tested for answers to the following questions. (i) Can future boat locations be anticipated from cues available to birds? (ii) Are birds able to appropriately use these cues to increase encounters? (iii) How frequently do birds use these cues? Boats were spatially persistent: birds searching in the direction where they previously attended boats would encounter twice as many boats compared with following a random direction strategy. A large proportion of birds did not use this cue: across pairs of consecutive trips (n = 85), 51% of birds switched their foraging direction irrespective of previous boat encounters. Still, 15 birds (27%) were observed to closely approach (approx. 0.1–1 km) where they previously attended a boat while boats were no longer there. This is less than the distance expected by chance (approx. 10–100 km), based on permutation control procedures accounting for individual-specific spatial consistency, suggesting individuals could memorize where they encountered boats across consecutive trips. We conclude albatrosses were able to exploit predictive cues from recent boat encounters but most favoured alternative resources. |
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8074 |
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