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. (2010).
Abstract: Supervisors Dr Jean Louis Rouanet and Damien Roussel
Programme: 131
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Harrison A.P., Tivey D.R., Clausen T., Duchamp C. & Dauncey M.J. (1996). Role of thyroid hormones in early postnatal development of skeletal muscle and its implicationsfor undernutrition. Br. J. Nutr., 76, 841–855.
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Ashford J.R., Duhamel G. & Purves P. (1998). A protocol for randomised sampling of longlines in the Southern Ocean fishery for Dissostichus eleginoides: system of international scientific observations, CCAMLR. W6. FSA 98/60, , 15.
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Putaud J.P. & Nguyen B.C. (1996). Assessment of Dimethyl sulfide sea-air exchange rate. J. Geophys. Res., 101, 4403–4411.
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Wakefield Ewan D, Phillips Richard A, Trathan Philip N, Arata Javier, Gales Rosemary, Huin Nic, Robertson Graham, Waugh Susan M, Weimerskirch Henri, Matthiopoulos Jason, . (2011). Habitat preference, accessibility, and competition limit the global distribution of breeding Black-browed Albatrosses
. Ecological Monographs, 81(1), 141–167.
Abstract: Telemetry methods and remote sensing now make it possible to record the spatial usage of wide-ranging marine animals and the biophysical characteristics of their pelagic habitats. Furthermore, recent statistical advances mean that such data can be used to test ecological hypotheses and estimate species distributions. Black-browed Albatrosses Thalassarche melanophrys are highly mobile marine predators with a circumpolar breeding and foraging distribution in the Southern Hemisphere. Although they remain relatively abundant, increased fisheries bycatch has led to their listing as endangered by conservation bodies. We satellite-tracked 163 breeding Black-browed Albatrosses and eight closely related Campbell Albatrosses T. impavida from nine colonies. We then quantified habitat usage, and modeled population-level spatial distribution at spatiotemporal scales .50 km and 1 month, as a function of habitat accessibility, habitat preference, and intraspecific competition, using mixed-effects generalized additive models (GAMM). During incubation, birds foraged over a wider area than in the post-brood chick-rearing period, when they are more time constrained. Throughout breeding, the order of habitat preference of Black-browed Albatrosses was for neritic (0500 m), shelf-break and upper shelf-slope (5001000 m), and then oceanic (.1000 m) waters. Black-browed Albatrosses also preferred areas with steeper (.38) bathymetric relief and, in addition, during incubation, warmer sea surface temperatures (peak preference ;168C). Although this suggests specialization in neritic habitats, incubation-stage Black- browed Albatrosses from South Georgia also foraged extensively in oceanic waters, preferring areas with high eddy kinetic energy (.250 cm2/s2), especially the Brazil-Malvinas Confluence, a region of intense mesoscale turbulence. During chick-rearing, this species had a more southerly distribution, and following the seasonal retreat of sea ice, birds from some populations utilized neritic polar waters. Campbell Albatrosses showed similar bathymetric preferences but also preferred positive sea level anomalies. Black-browed Albatross foraging areas were partially spatially segregated with respect to colony and region, with birds preferring locations distant from neighboring colonies, presumably in order to reduce competition between parapatric conspecifics. At the global scale, the greatest concentrations of breeding Black-browed Albatrosses are in southern South American neritic, shelf-break, and shelf-slope waters. These regions also hold large fisheries and should therefore be a priority for introduction of bycatch mitigation measures.
Programme: 109
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Weimerskirch H. (2001). Seabird demography and its relationship with the marine environment. Bachelor's thesis, , .
Abstract: in E.A. Schreiber & J. Burger (Eds) Biology of Marine Birds (CRC Marine Biology), Boca Raton London New York Washington D.C.
Programme: 109
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Charrier Isabelle, Aubin Thierry, Mathevon Nicolas, . (2010). MotherCalf vocal communication in Atlantic walrus: a first field experimental study
. Animal Cognition, 13(3), 471–482 -482.
Keywords: Biomedical and Life Sciences,
Programme: 450
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Henry B. & Plessard C. (1997). New paleomagnetic results from the Kerguelen Islands. Geophysical journal international, 128, 73–83.
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. (2010). Provenance of freshwater pulses in the Gulf of Mexico during the last deglaciation
. Quaternary Research, 74(2), 235–245.
Abstract: During the last deglaciation, the decaying Laurentide Ice Sheet (LIS) delivered huge volumes of meltwater toward the Gulf of Mexico. The present investigation of clay mineralogy and grain-size characteristics of terrigenous sediments deposited in the Orca Basin (Gulf of Mexico) offers a unique opportunity to link the marine record of these meltwater floods with the reconstructed continental glacial history and the modeled drainage patterns. Five peculiar sedimentary levels, characterized by high smectite content and low CaCO3 content, were identified and occurred simultaneously with major meltwater floods. According to recently published clay mineral distribution maps for North America, these results help to pinpoint the southwestern margin of the LIS as a main contributor to most of the meltwater discharges. In addition, the peculiar mineralogical composition (illite and chlorite-rich) of the sediments characterizing the meltwater episode associated with Heinrich event 1 suggests a provenance from the Great Lakes area, supporting the interpretation of destabilization of the LIS southeastern margin during this event. Decreased terrigenous contribution associated with changing provenance of sediments after 12.9 cal ka BP suggests strong modifications of the continental hydrography in relation to Lake Agassiz history and changes in the morphology of Mississippi delta due to rising sea level.
Keywords: Deglaciation, Meltwater pulse, Laurentide Ice Sheet, Clay minerals, Orca Basin, Mississippi River,
Programme: 316
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Genthon Christophe, Town Michael S, Six Delphine, Favier Vincent, Argentini Stefania, Pellegrini Andrea, . (2010). Meteorological atmospheric boundary layer measurements and ECMWF analyses during summer at Dome C, Antarctica
. J. Geophys. Res., 115(D5), D05104–.
Keywords: Antarctica, boundary layer, ECMWF, 3307 Atmospheric Processes: Boundary layer processes, 0798 Cryosphere: Modeling, 0394 Atmospheric Composition and Structure: Instruments and techniques,
Programme: 1013
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