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Elise Brunel |
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6045 |
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BERNARD E., TOLLE F., GRISELIN M., LAFFLY D. et MARLIN Ch., 2010 : |
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1494 |
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LAFFLY D., BERNARD E., FRIEDT JM., MARTIN G., MARLIN Ch. and GRISELIN M. |
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“Snow cover monitoring using combined FORMOSAT satellite imaging and oblique view ground-based pictures (East Loven glacier, Spitsbergen, Svalbard)”
11th International Circumpolar Remote Sensing Symposium, September 20-24, 2010, Cambridge, United Kingdom |
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Conference - International - Communication |
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2010 |
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1226 |
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GRISELIN M., MARLIN Ch., LAFFLY D., BERNARD E., DELANGLE. E. et FRIEDT JM |
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2009 |
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5882 |
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Carole Ferret |
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Conference - National - Communication |
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2007 |
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937 |
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Jouma’a Joffrey, Le Bras Yves, Richard Gaëtan, Vacquié-Garcia Jade, Picard Baptiste, El Ksabi Nory, Guinet Christophe |
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Adjustment of diving behaviour with prey encounters and body condition in a deep diving predator: the Southern Elephant Seal |
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2016 |
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Functional ecology |
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30 |
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4 |
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109 |
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0269-8463 |
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6539 |
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Grémillet, D. & Fort, J. |
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Adaptation et évolution de la biodiversité groenlandaise |
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2016 |
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In: Le Groenland - Climat, Ecologie, Société (Editeurs: Masson-Delmotte, V., Gauthier, E., Grémillet, D., Huctin, JM, Swingedouw, D.). Editions du CNRS |
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388 |
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6526 |
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Pearce, D.A., Alekhina, I.A., Terauds, A., Wilmotte, A., Quesada, A., Edwards, A., Dommergue, A., Sattler, B., Adams, B., Magalhães, C.M., Chu, W.-L., Lau, M., Cary, S.C., Smith, D.J., Wall, D.H., Eguren, G., Matcher, G., Bradley, J., De Vera, J.-P.P., Elster, J., Hughes, K.A., Benning, L.G., Gunde - Cimerman, N., Convey, P., Hong, S.G., Pointing, S.B., Pellizari, V.H., Vincent, W.F., 2016. |
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Aerobiology over Antarctica – a new initiative for atmospheric ecology |
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2016 |
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Frontiers in microbiology |
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1664-302X |
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7 |
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The role of aerial dispersal in shaping patterns of biodiversity remains poorly understood, mainly due to a lack of coordinated efforts in gathering data at appropriate temporal and spatial scales. It has been long known that the rate of dispersal to an ecosystem can significantly influence ecosystem dynamics, and that aerial transport has been identified as an important source of biological input to remote locations. With the considerable effort devoted in recent decades to understanding atmospheric circulation in the south polar region, a unique opportunity has emerged to investigate the atmospheric ecology of Antarctica, from local to continental scales. This concept note identifies key questions in Antarctic microbial biogeography and the need for standardized sampling and analysis protocols to address such questions. A consortium of polar aerobiologists is established to bring together researchers with a common interest in the airborne dispersion of microbes and other propagules in the Antarctic, with opportunities for comparative studies in the Arctic. |
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1028 |
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1664-302X |
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6559 |
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J.C. Aymes, M. Vignon, E. Beall, F. Guéraud, P. Gaudin |
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Age validation of the Kerguelen Islands brown trout, Salmo trutta L.,and selection of the otolith optimal zone for investigating chronological data series |
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2016 |
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Fisheries research |
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176 |
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The selection of an otolith optimal zone where to obtain interpretable chronological data (e.g. chemicaltransect, increment width) and valid age estimation is fundamental if otoliths are to be used as an effectivetool for investigating life history traits or environments experienced by fish. In the remote sub-AntarcticKerguelen Islands (49◦S, 70◦E), introduced brown trout populations are invading the archipelago sincethe 50’s and life histories information is of great interest to understand the invasion dynamics. Unfortu-nately, few studies have used otolith as a tool to estimate brown trout age at these extreme latitudes andlittle is known about otolith growth and annulus formation in these sub-polar conditions. Furthermore,no formal procedure exists at the population level to select an otolith optimal zone where to concomi-tantly extract chronological data aiming at investigating life history traits and growth chronologies. Inthis context, the aims of this study were (1) to validate the otolith age estimation method by the deter-mination of the position of the first annulus and the annual formation of subsequent annuli; (2) to definean optimal zone where chronological data could be coupled to age estimates. A brown trout populationlocated near the Port-au-Franc¸ ais station was studied and sampled repeatedly using mark-recapturemethod and Alizarin Red S marking. After to 2 years of recaptures 53 sagittae were analysed. A compositeindex was created to select an optimal zone where chronological data transects have the maximum prob-abilities to cross readable annuli. Results showed that brown trout forms annuli at the end of September,starting with the first winter after the December hatching. Annulus formation up to 2 years after mark-ing was validated. The area between 80◦and 120◦perpendicular to the rostrum/core axis was optimalfor the positioning of data transect. The proposed formal approach allows distinguishing the zone thatidentifies the best compromise between spatial resolution and precise annulus positioning along otolithchronological series.AcknowledgementsWe thank the French Polar Institute (IPEV, Institut PolairePaul-Emile Victor) for the financial support of the Program 1041SALMEVOL; we thank Jacques Labonne for his management of theprogram from 2008 to 2013.We thank Margaret Lang for providingwriting assistance that lead to the clarity of the English language.We thank Jacques Rives and Franc¸ ois Guéraud for otolith and scaleanalysis. We thank two anonymous reviewers for comments thatlead to substantial improvements in the manuscript. We gratefullyacknowledge the logistical support provided by the TAAF adminis-tration and the Southern French Natural Reserve at Kerguelen. Thefieldwork would not have been possible without the help and sup-port of the IPEV logistics team (Romuald Bellec, Yann Lemeur, NinaMarchand) and all the people involved in the SALMEVOL summercampaign (Stephane Betoulle, Eduardo Vicente Dopico-Rodriguez,Emily Farcy, Franc¸ ois Guéraud, José-Luis Horreo-Escandon, RenaudKaeuffer, Jacques Rives, Thibault Thellier, Julien Tremblay). |
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1041 |
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0165-7836 |
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6533 |
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Nerentorp Mastromonaco, M., Gårdfeldt, K., Jourdain, B., Abrahamsson, K., Granfors, A., Ahnoff, M., Dommergue, A., Méjean, G., Jacobi, H.W. |
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Antarctic winter mercury and ozone depletion events over sea ice. |
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2016 |
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Atmospheric environment |
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129 |
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125-132 |
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During atmospheric mercury and ozone depletion events in the springtime in polar regions gaseous elemental mercury and ozone undergo rapid declines. Mercury is quickly transformed into oxidation products, which are subsequently removed by deposition. Here we show that such events also occur during Antarctic winter over sea ice areas, leading to additional deposition of mercury. Over four months in the Weddell Sea we measured gaseous elemental, oxidized, and particulate-bound mercury, as well as ozone in the troposphere and total and elemental mercury concentrations in snow, demonstrating a series of depletion and deposition events between July and September. The winter depletions in July were characterized by stronger correlations between mercury and ozone and larger formation of particulate-bound mercury in air compared to later spring events. It appears that light at large solar zenith angles is sufficient to initiate the photolytic formation of halogen radicals. We also propose a dark mechanism that could explain observed events in air masses coming from dark regions. Br2 that could be the main actor in dark conditions was possibly formed in high concentrations in the marine boundary layer in the dark. These high concentrations may also have caused the formation of high concentrations of CHBr3 and CH2I2 in the top layers of the Antarctic sea ice observed during winter. These new findings show that the extent of depletion events is larger than previously believed and that winter depletions result in additional deposition of mercury that could be transferred to marine and terrestrial ecosystems. |
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1352-2310 |
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6560 |
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