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T Saucède, C De Ridder, P Dubois, C Marschal, G Marty, S Motreuil, L Michel, P-y Pascal, E Poulin, J-p Féral. (2018). Ecological monitoring of sub-Antarctic coastal marine biodiversity. Implementation of a submarine observatory in the Kerguelen Islands (French Southern Territories).
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Charlène Guillaumot, Alexis Martin, Marc Eléaume, Thomas Saucède. (2018). Benthic species of the Kerguelen plateau modelled distributions in a fast-changing environment..
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Hodgson, D., et al.,. (2017). Centennial-Scale Relationship Between the Southern Hemisphere Westerly Winds and Temperature.
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Ahadi F, Delpech G, Gautheron C, Nomade S, Pinna-jamme R, Ponthus L, Guillaume D. (2016). Morphological modifications of the Kerguelen Islands (South Indian Ocean) in response to Neogene climate change: evidence from 40Ar/39Ar and (U-Th)/He thermochronology..
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Veilleux S., Bhiry N., Decaulne A., Sæmundsson &Thorn;. (2017). Slope processes and associated risks to local residents and tourists in the Tasiapik Valley in Umiujaq, Nunavik. Arctic Change 2017, Quebec City, Canada, 11-15 December 2017.
Abstract:
Programme: 1148
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Lesur, V., Chambodut, Maury, V. (2018). Digital Object Identifier (DOI) for the BCMT definitive data set.
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Pauthenet E., Roquet F., Madec G., Guinet C., Hindell M., Mcmahon C., Harcourt R., Nerini D. (2017). Instrumented seals help refining the frontal mapping of the Southern Indian Ocean.
Abstract: Study conducted as part of the SO-MEMO
The Kerguelen Plateau obstructs the eastward flowing Antarctic Circumpolar Current (ACC) in the Indian sector of the Southern Ocean strongly interacting with the frontal structure. While the Subantarctic Front (SAF) lies north of the plateau and the Southern ACC Front (SACCF) is deflected southward by the Fawn Trough, the position and structure of the Polar Front (PF) in the Kerguelen region remains ambiguous given the intense current-topography interaction and the paucity of oceanographic observations. Since 2004 southern elephant seals, instrumented with CTD data loggers, have provided new temperature-salinity profiles, especially over the Kerguelen Plateau at unprecedented spatial and temporal resolution (MEOP database, 261 tags and >76000 profiles in the Indian sector). These observations are used here to resolve the uncertainty around the PF definition. We propose to define objectively the ocean zonation by analyzing the shape of temperature and salinity profiles up to 300m using a functional Principal Component Analysis (PCA). This statistical method decomposes the thermohaline structure and describes 95% of the variance with two modes only. These two modes present circumpolar patterns that can be closely related with standard frontal definitions. The method is applied on the MEOP database combined with profiles of the World Ocean Database and model outputs (e.g. SOSE, GLORYS) adding more insight on the spatio-temporal variations of the fronts over and near the plateau. It is found that the PF tends to meander seasonally by up to 5 degrees of latitude west of the Kerguelen Plateau, before it becomes steered by the southeastern edge of the Kerguelen Islands.
Programme: 1201
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O'Toole M., Sergi S., Cotté C., Bost C.A., Guinet C., Weimerskirch H., Hindell M.A., d'Ovidio F. (2017). Tracking ecological hotspots in the Southern Ocean: Antarctic Circumpolar Current as a space-time-trophic conveyer belt.
Abstract: Satellite data analysis has showed that the environment of the open ocean – uniform and homogeneous to our naked eyes – is in fact populated by strongly contrasted physical features, whose lifetime occurs on ecologically relevant spatial and temporal scales. This dynamical landscape has a primary structuring role on marine ecosystems in particular in the pelagic regions. Pinpointing which physical features are the most ecologically relevant, tracking them, and estimating their lifetime and inter-annual variability are a major challenge for ecologists. Here, we combine bio-logging data and advanced multi-satellite diagnostic tools to track pelagic ecological hotspots in the Indian sector of the Southern Ocean. By clustering predator foraging sites according to diet, we identify five regional hotspots. We interpret these regions by pathways of iron and ageing of the ecosystem from primary production to higher trophic organisms. These results are a first step for the scientific basis of a marine protected area (MPA) proposal to the Convention for the Conservation of Antarctic Marine Living Resources (CCAMLR). (PDF) . Available from: TrackingecologicalhotspotsintheSouthernOceanAntarcticCircumpolarCurrentasaspace-time-trophicconveyerbelt”>https://www.researchgate.net/publication/320510489TrackingecologicalhotspotsintheSouthernOceanAntarcticCircumpolarCurrentasaspace-time-trophicconveyerbelt [accessed Sep 01 2018].
Programme: 1201
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Jacobi, H.-W., F. Baladima, C. Rogeaux, M.A. Wolff, K. Isaksen, R. Brækkan, E. Førland, H.M. Gjelten, A.V. Urazgildeeva, P.N. Sviashchennikov, B.V. Ivanov, E. ?upikasza, M. Osuch, and T. Wawrzyniak. (2017). How to get reliable precipitation data in the Arctic?.
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Gallet, J.-C., C. Larose, H.-W. Jacobi, C.A. Pedersen, R. Neuber, and P. Morin. (2017). Monitoring of snow physics, chemistry and biology at Ny-Ålesund: Coordinated measurements at Gruvebadet.
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