| Records |
| Author |
Delord Karine, Gasco Nicolas, Barbraud Christophe, Weimerskirch Henri, |
| Title |
Multivariate effects on seabird bycatch in the legal Patagonian toothfish longline fishery around Crozet and Kerguelen Islands
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Type |
Journal Article |
| Year |
2010 |
Publication |
Polar Biology |
Abbreviated Journal |
Polar Biol. |
| Volume |
33 |
Issue |
3 |
Pages |
367-378 |
| Keywords |
Biomedical and Life Sciences, |
| Abstract |
The effects of temporal, spatial, environmental and operational effects on seabird incidental mortality in the legal Patagonian toothfish longline fishery operating, between 2003 and 2006, in French exclusive economic zones of Crozet and Kerguelen Islands were analysed. During the study period, the mean bycatch rate varied from 0.05 to 0.12 birds per 1,000 hooks. Two species were concerned by incidental mortality: white-chinned petrels (88%) and grey petrels (11.5%). Males of white-chinned petrel seemed more at a risk than females. Logbooks data tended to underreport mortality when compared with dedicated fishery observers. The results indicate that temporal (season or phenology) and spatial (area) factors reflecting mortality risk for seabirds played the most significant role in the incidental mortality of the two species. Operational (integrated weight mainline, number of scaring lines and number of hooks hauled) and environmental factors (wind/vessel angle, moon brightness) were also influential, although less significantly, in increasing this mortality risk. Our two steps analyses by separately modelling the probability of presence and the abundance given presence suggest that the decrease in seabird bycatch over the period was mainly due to an important decrease in probability (occurrence) of mortality. |
| Programme |
109 |
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| Publisher |
Springer Berlin / Heidelberg |
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| ISSN |
0722-4060 |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial  |
341 |
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| Author |
Bernatowitcz T.J., Nichols R.H., Hohenberg C.M. & Maurette M. |
| Title |
Vapor deposits in the lunar regolith. |
Type |
Journal Article |
| Year |
1994 |
Publication |
Science |
Abbreviated Journal |
Science |
| Volume |
264 |
Issue |
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Pages |
1779 |
| Keywords |
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| Programme |
226 |
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| ISSN |
0036-8075 |
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Approved |
yes |
| Call Number |
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Serial |
342 |
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| Author |
Fourati H., Afilal L., Manamanni N. & Y. Handrich |
| Title |
Fusion de mesures inertielles pour l’estimation de l’attitude et des accélérations propres. Actes 3ièmes Journées Doctorales/Nationales MACS (JD-JN MACS). Angers. France. 17-18 mars 2009 |
Type |
Conference - International - Article with Reading Comitee |
| Year |
2009 |
Publication |
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Issue |
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Pages |
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| Abstract |
Ce travail traite du double problème de l’estimation d’attitude représentée sous forme de quaternion ainsi que de la reconstruction de l’accélération linéaire d’un corps rigide en mouvement. L’objectif étant d’appliquer l’approche proposée dans le domaine de l’écophysiologie animale (localisation et monitoring des activités de l’animal sauvage ‘Bio-logging’). Généralement pour ce type d’application, les mesures d'attitude sont obtenues en utilisant des capteurs inertiels à base de microsystèmes électromécaniques (M.E.M.S.) tels que les accéléromètres et les magnétomètres, mais à basses fréquences. Dans cet article, l’estimation est basée sur la fusion non linéaire de données inertielles provenant d’une triade orthogonale composée d’un accéléromètre triaxial, un magnétomètre triaxial, et un gyromètre triaxial. Nous proposons une approche qui combine un observateur non linéaire et un Algorithme des Moindres Carrés Itératifs (A.M.C.I.) pour estimer la meilleure attitude et les accélérations propres du corps rigide. Au cours de cette estimation, les mesures gyromètriques sont corrigées de leur dérive intrinsèque puis réutilisées dans la phase d’estimation. Une étape de correction est introduite pour corriger l'effet de l’accélération subi par le corps rigide. Finalement, quelques simulations et résultats expérimentaux préliminaires sont fournis pour montrer l'efficacité de l'algorithme proposé. |
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394 |
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Approved |
yes |
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Serial |
343 |
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| Author |
Gauthier Gilles, Milot Emmanuel, Weimerskirch Henri, |
| Title |
Small-scale dispersal and survival in a long-lived seabird, the wandering albatross
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Type |
Journal Article |
| Year |
2010 |
Publication |
Journal of Animal Ecology |
Abbreviated Journal |
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| Volume |
79 |
Issue |
4 |
Pages |
879 -887 |
| Keywords |
colony size, conspecific attraction, fidelity to colony, philopatry, |
| Abstract |
Summary 1.Dispersal is a fundamental but still poorly known process in population dynamics and several hypotheses have been proposed to explain its patterns. We studied natal and breeding dispersal and survival in a long-lived seabird, the wandering albatross (Diomedea exulans L.), and examined several hypotheses concerning dispersal patterns in birds. 2.We applied multi-state capturerecapture models to a 36-year data set (19692004) collected at three albatross colonies on Île de Possession, Crozet Islands. Because the species has biennial reproduction, we introduced unobservable states in the model to account for the absence of individuals in those years. 3.Adults were highly faithful to their nesting colony but colony fidelity, as well as survival rate, differed slightly among colonies (fidelity ranged from 0·957 to 0·977). Breeding fidelity was highest in the colony where survival was lowest and individuals were not more likely to change colony following a failed breeding attempt than after a successful one. The colony that attracted most dispersers had the lowest density of nesting birds. 4.Philopatry (the probability that young return to breed at a birth site) was generally high but variable among colonies (ranging from 0·70 to 0·92), and survival of young differed little. Philopatry was highest in the largest colony, where the availability of potential mates was presumably greatest. However, among dispersing individuals, the colony that had the lowest density of nesting individuals, not the largest colony, attracted the most recruits. 5.Although size of the colony influenced the decision to stay or to leave in young, density was most influential in the selection of a new colony among both adult and young dispersers. Our results support the hypothesis that philopatry is the strategy favoured by most recruits and that conspecific attraction can explain variation in the level of philopatry among colonies but not settlement patterns among dispersing individuals.
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| Programme |
109 |
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| Publisher |
Blackwell Publishing Ltd |
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Edition |
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| ISSN |
1365-2656 |
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| Notes |
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Approved |
yes |
| Call Number |
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Serial |
344 |
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| Author |
Jaeger A, Connan M, Richard P, Cherel Y, |
| Title |
Use of stable isotopes to quantify seasonal changes of trophic niche and levels of population and individual specialisation in seabirds
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Type |
Journal Article |
| Year |
2010 |
Publication |
Mar Ecol Prog Ser |
Abbreviated Journal |
Mar. Ecol. Prog. Ser. |
| Volume |
401 |
Issue |
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Pages |
269 -277 |
| Keywords |
Procellariiform · Inter-nesting period · Body feather · Specialist · Generalist · Southern Ocean |
| Abstract |
Niche variation is a widespread phenomenon that has important implications for ecological interactions and conservation biology, but few studies have quantified the trophic niche width (TNW) and its within- and between-individual components. We used stable isotopes of body feathers to investigate (1) seasonal isotopic niche changes of 4 southern procellariiforms and, (2) the level to which individuals are specialised relative to their population within each season. (1) δ13C and δ15N values of chicks and adults indicated a well-defined trophic segregation within the seabird assemblage during both the breeding and poorly known moulting (inter-nesting) periods, and they underlined marked species-specific seasonal changes. One species (light-mantled sooty albatross) remained within the Southern Ocean both during breeding and body feather moult, while the 3 others migrated either to oceanic subtropical waters (wandering and sooty albatrosses) or high isotopic marine areas (e.g. productive neritic waters; white-chinned petrel) during the moulting period. (2) Isotopic variances and TNW were generally low, indicating that birds belong to isotopic specialist populations within a given period. Variances and TNW were larger for white-chinned petrel chicks and light-mantled sooty albatross adults, respectively, indicating isotopic generalist populations and revealing 2 new foraging behaviours. Individual white-chinned petrel chicks segregated by their feather isotopic signatures, thus indicating individual/pair specialisation of parent birds during the chick-rearing period. The light-mantled sooty albatross population included mostly isotopic generalist individuals during the moulting period, with individuals using different habitats and diets. The study highlights the utility of feather isotopic signature for determining TNW and points out the necessity to develop such new approaches to better depict niche variations at both population and individual levels. |
| Programme |
109 |
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| ISSN |
0171-8630 |
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Approved |
yes |
| Call Number |
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Serial |
345 |
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| Author |
Fourati H., Manamanni N., Afilal L., & Y. Handrich
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| Title |
Nonlinear attitude estimation based on fusion of inertial and magnetic sensors: Bio-logging application.” 2nd IFAC International Conference on Intelligent Control Systems and Signal Processing, (ICONS). Istanbul. Turquie, 21-23 septembre 2009. |
Type |
Conference - International - Communication |
| Year |
2009 |
Publication |
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Pages |
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394 |
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Approved |
yes |
| Call Number |
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Serial |
346 |
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| Author |
Fourati H., Manamanni N., Afilal L., & Y. Handrich 7th . |
| Title |
Rigid Body Motions Estimation Using Inertial Sensors: Bio-Logging Application.IFAC Symposium on Modelling and Control in Biomedical Systems (MCBMS’09), Aalborg. Danemark, 12-14 août 2009. |
Type |
Conference - International - Communication |
| Year |
2009 |
Publication |
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Abbreviated Journal |
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394 |
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Approved |
yes |
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Serial |
347 |
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| Author |
Robisson P. |
| Title |
Vocalizations in Aptenodytes penguins: application of the two-voice theory. |
Type |
Journal Article |
| Year |
1992 |
Publication |
Auk |
Abbreviated Journal |
Auk |
| Volume |
109 |
Issue |
3 |
Pages |
654-658 |
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109 |
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0004-8038 |
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Approved |
yes |
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Serial |
348 |
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| Author |
Goutail F., Pommereau J.P., Lateltin E., Portafaix T. & Sarkissian A. |
| Title |
Perturbation of latitudinal distribution of NO2 and ozone after the eruption of pinatubo. |
Type |
Conference - International - Article without Reading Comitee |
| Year |
1995 |
Publication |
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Pages |
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int. Conf. on Stratospheric Ozone, Halkidiki |
| Programme |
209 |
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Approved |
yes |
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Serial |
349 |
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| Author |
Kurat G., Koeberl C., Presper T., Brandstätter F. & Maurette M. |
| Title |
Petrology and geochemistry of Antarctic micrometeorites. |
Type |
Journal Article |
| Year |
1994 |
Publication |
Geochimica et cosmochimica acta |
Abbreviated Journal |
Geochim. Cosmochim. Acta |
| Volume |
58 |
Issue |
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Pages |
3879-3904 |
| Keywords |
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226 |
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0016-7037 |
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Approved |
yes |
| Call Number |
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Serial |
350 |
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