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Author Landais A., Barnola J.M., Awamura K., Caillon N., Delmotte M., Van Ommen T., Dreyfus G., Jouzel J., Masson-Delmotte V., Minster B., Freitag J., Leuenberger M., Schwander J., Huber C., Etheridge D. & Morgan V. doi  openurl
  Title Firn-air d15N in modern polar sites and glacial-interglacial ice: a model-data mismatch during glacial periods in Antarctica? Type Journal Article
  Year 2006 Publication Quaternary science reviews Abbreviated Journal Quat Sci Rev  
  Volume 25 Issue 1-2 Pages 49-62  
  Keywords  
  Abstract The phase lag between atmospheric composition (air bubbles) and temperature (water isotopes) can be quantified from ice cores provided that the age difference between entrapped air and the surrounding air can be correctly estimated. This difference depends on the lock-in depth (LID), when air no longer mixes with the atmosphere. The LID can be estimated from firnification models or from the air isotopic composition (?15N and ?40Ar). Both methods give consistent results for Greenland and one coastal site in Antarctica (Byrd). New firn measurements in Greenland (NorthGRIP) and Antarctica (Berkner Island, BAS depot, Dome C) confirm that firnification models correctly reproduce the present LID over a large range of surface conditions. However, a systematic mismatch is observed for the Last Glacial Maximum (LGM) in East Antarctic sites (Vostok, Dome C, Dome F) questioning the model's validity. Here we use new ?15N measurements from two coastal Antarctic sites (Kohnen Station and Law Dome) providing depth estimates again distinct from firnification model calculations. We show that this discrepancy can be resolved by revising the estimate of past accumulation rates. ?15N measurements can therefore help to constrain past accumulation rate and improve ice core dating.  
  Programme 960  
  Campaign  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0277-3791 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 3002  
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Author Hosie Graham, Koubbi Philippe, Riddle Martin, Ozouf-Costaz Catherine, Moteki Masato, Fukuchi Mitsuo, Ameziane Nadia, Ishimaru Takashi, Goffart Anne, doi  openurl
  Title CEAMARC, the Collaborative East Antarctic Marine Census for the Census of Antarctic Marine Life (IPY # 53): An overview Type Journal Article
  Year 2011 Publication Polar Science Abbreviated Journal  
  Volume 5 Issue 2 Pages 75-87  
  Keywords CEAMARC, CAML, Marine biodiversity, Pelagic, Benthos,  
  Abstract The Census for Antarctic Marine Life (CAML, IPY Project 53) aimed to investigate the distribution and abundance of Antarctic marine biodiversity and how it will be affected by climate change. It was a major ship-based research programme in the austral summer of 20072008 involving scientists from 30 countries and 19 vessels. The Collaborative East Antarctic Marine Census (CEAMARC) was a multinational contribution to CAML involving scientists and students from several nations using three ships from Australia, Japan and France surveying the one area. This collaboration was a highly coordinated and comprehensive survey of the plankton, fish, benthos, oceanography and geophysical conditions of the waters north of Terre Adélie and George V Land of Eastern Antarctica. CEAMARC has provided a robust benchmark of the marine life in this poorly studied sector and will help to establish the monitoring of future changes in this region.  
  Programme 1124;1142  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1873-9652 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 3316  
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Author Lacarra M, Houssais M-N, Sultan E, Rintoul SR, Herbaut C, doi  openurl
  Title Summer hydrography on the shelf off Terre Adélie/George V Land based on the ALBION and CEAMARC observations during the IPY Type Journal Article
  Year 2011 Publication Polar Science Abbreviated Journal  
  Volume 5 Issue 2 Pages 88-103  
  Keywords  
  Abstract  
  Programme 452  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1873-9652 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 3605  
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Author Giraldo Carolina, Cherel Yves, Vallet Carole, Mayzaud Patrick, Tavernier Eric, Moteki Masato, Hosie Graham, Koubbi Philippe, pdf  doi
openurl 
  Title Ontogenic changes in the feeding ecology of the early life stages of the Antarctic silverfish (Pleuragramma antarcticum) documented by stable isotopes and diet analysis in the Dumont dUrville Sea (East Antarctica) Type Journal Article
  Year 2011 Publication Polar Science Abbreviated Journal  
  Volume 5 Issue 2 Pages 252-263  
  Keywords 13C, 15N, Southern Ocean, Trophic relationships, Omnivory,  
  Abstract The feeding ecology of the notothenioid fish Pleuragramma antarcticum was studied in the Dumont dUrville Sea (East Antarctica) near the French Antarctic station. Stable isotopes (13C and 15N) and diet contents were used in order to study dietary shifts between fish larvae and juveniles. All specimens had low 13C values (<24), a main characteristic of high-Antarctic pelagic species. Fish larvae showed differences in both carbon and nitrogen ratios when compared with juveniles. Muscle 15N values showed a difference of one trophic level (3) between larvae (6.7) and juveniles (9.710.0) and a trophic position of tertiary consumers. Diet content analyses (stereomicroscope and scanning electron microscopes) indicated that larvae are omnivorous, feeding on phytoplankton (mainly diatoms) as well as on zooplankton species. A positive relationship between 15N values and size was found and indicated a carnivorous diet for older specimens.  
  Programme 109;1142  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1873-9652 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 3257  
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Author Moteki Masato, Koubbi Philippe, Pruvost Patrice, Tavernier Eric, Hulley Percy-Alexander, doi  openurl
  Title Spatial distribution of pelagic fish off Adélie and George V Land, East Antarctica in the austral summer 2008 Type Journal Article
  Year 2011 Publication Polar Science Abbreviated Journal  
  Volume 5 Issue 2 Pages 211-224  
  Keywords Pelagic fish, Community structure, East Antarctica, Mesopelagic fish, Notothenioids,  
  Abstract Pelagic fish assemblages and community structure were examined along longitudinal and meridian transects off Adélie and George V Land, East Antarctica, in the austral summer 2008. Fish were sampled with an RMT 8 net principally from six discrete depth layers (05010020050010002000 m) in the oceanic zone and from three depth layers (050100200 m) over the continental shelf zone. A total of 20,281 individuals from 27 species were collected. Pleuragramma antarcticum was the most dominant species by number (18,710 inds), followed by Chionodraco hamatus (768), Trematomus newnesi (375), Cyclothone microdon (101), Electrona antarctica (92), Bathylagus antarcticus (51) and Notolepis coatsi (54). Cluster analysis revealed that the fish community was clearly divided at the Antarctic Slope Front into separate oceanic and shelf assemblages, being dominated by mesopelagic fish and notothenioids, respectively. The Southern Boundary of Antarctic Circumpolar Current likely restricted a more northern distribution of notothenioids in the upper 200 m. Mesopelagic fish dominated the large biomass below 500 m and notothenioids dominated that in the upper 100 m. It is considered that mesopelagic fish in the oceanic zone would unlikely be eaten by seabirds because no distinctive diel vertical migration to the surface layer was observed. In the neritic zone, notothenioids (C. hamatus, T. newnesi and P. antarcticum) possibly play an important role as prey items for flying seabirds, penguins and other notothenioids fish especially in the shallow depth stratum (0100 m).  
  Programme 1142  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1873-9652 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 3328  
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Author Koubbi Philippe, O'Brien Colleen, Loots Christophe, Giraldo Carolina, Smith Martina, Tavernier Eric, Vacchi Marino, Vallet Carole, Chevallier Jean, Moteki Masato, doi  openurl
  Title Spatial distribution and inter-annual variations in the size frequency distribution and abundances of Pleuragramma antarcticum larvae in the Dumont dUrville Sea from 2004 to 2010 Type Journal Article
  Year 2011 Publication Polar Science Abbreviated Journal  
  Volume 5 Issue 2 Pages 225-238  
  Keywords Pleuragramma antarcticum, East Antarctic shelf, Fish larvae, Life cycle, Inter-annual variations,  
  Abstract This paper investigates the abundance and distribution of Pleuragramma antarcticum larvae by size class in the Dumont dUrville Sea from 2004 to 2010. Samples were collected between Dumont dUrville station and the Mertz Glacier Tongue onboard the RV lAstrolabe for studying the inter-annual and spatial distribution of fish larvae and the TRV Umitaka Maru for looking at life stages vertical distributions. The seabed depression adjacent to the Mertz Glacier Tongue and in Commonwealth Bay hosted high abundances of small P. antarcticum larvae, while larger larvae were found in lower abundance and further offshore. We found that canyons, sea ice, stability of the water column and temperatures are important features for determining suitable areas for young larvae.  
  Programme 1142  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1873-9652 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 3301  
Permanent link to this record
 

 
Author Cherel Yves, Koubbi Philippe, Giraldo Carolina, Penot Florian, Tavernier Eric, Moteki Masato, Ozouf-Costaz Catherine, Causse Romain, Chartier Amélie, Hosie Graham, pdf  doi
openurl 
  Title Isotopic niches of fishes in coastal, neritic and oceanic waters off Adélie land, Antarctica Type Journal Article
  Year 2011 Publication Polar Science Abbreviated Journal  
  Volume 5 Issue 2 Pages 286-297  
  Keywords Benthic, Ecological niche, Habitat, Pelagic, Southern Ocean, Stable isotopes,  
  Abstract We used the stable isotope method to investigate the ecological niches of Antarctic fishes, with 13C and 15N as proxies of fish habitats and dietary habits, respectively. Muscle isotopic signature was measured for each of 237 delipidated tissue samples from 27 fish species collected offshore Adélie Land, East Antarctica. Overall, 13C values ranged from 25.3 to 18.2, thus allowing characterizing of the fish habitats, with inshore/benthic species having more positive 13C signatures than offshore/pelagic ones. No clear difference in the 13C values of pelagic fishes was found between species living in neritic and oceanic waters. Overall, the 15N signatures of neritic pelagic and epibenthic fishes encompassed 1.0 trophic level (3.1), a higher difference than that (1.4) found within the oceanic assemblage. Fishes with the lowest and highest 15N values are primarily invertebrate- and fish-eaters, respectively. The isotopic niches of fishes illustrate the different mechanisms allowing coexistence, with most fishes segregating at least by one of the two niche axes (13C and 15N). Muscle isotopic values also document interindividual foraging specialization over the long-term in coastal benthic fishes, but not in more offshore pelagic species. Finally, the 15N signatures of fishes overlap with those of penguins and seals, indicating that seabirds and marine mammals share the upper levels of the Antarctic pelagic ecosystem with some large fish species. In conclusion, the concept of isotopic niche is a powerful tool to investigate various aspects of the ecological niche of Antarctic fishes, thus complementing the use of other conventional and non-conventional approaches.  
  Programme 109;1124;1142  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1873-9652 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 3255  
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Author Koubbi Philippe, Ozouf-Costaz Catherine, Goarant Anne, Moteki Masato, Hulley Percy-Alexander, Causse Romain, Dettai Agns, Duhamel Guy, Pruvost Patrice, Tavernier Eric, Post Alexandra L, Beaman Robin J, Rintoul Stephen R, Hirawake Toru, Hirano Daisuke, Ishimaru Takashi, Riddle Martin, Hosie Graham, doi  openurl
  Title Estimating the biodiversity of the East Antarctic shelf and oceanic zone for ecoregionalisation: Example of the ichthyofauna of the CEAMARC (Collaborative East Antarctic Marine Census) CAML surveys Type Journal Article
  Year 2010 Publication Polar Science Abbreviated Journal  
  Volume 4 Issue 2 Pages 115 -133  
  Keywords East Antarctic shelf, Ichthyofauna, Ecoregionalisation, Generalized dissimilarity modeling, Dumont d'Urville Sea,  
  Abstract Ecoregions are defined in terms of community structure as a function of abiotic or even anthropogenic forcing. They are meso-scale structures defined as the potential habitat of a species or the predicted communities geographic extent. We assume that they can be more easily defined for long-lived species, such as benthos or neritic fish, in the marine environment. Uncertainties exist for the pelagic realm because of its higher variability, plus little is known about the meso- and bathypelagic zones. A changing environment and modification of habitats will probably drive new communities from plankton to fish or top predators. We need baseline studies, such as those of the Census of Antarctic Marine Life, and databases like SCAR-MarBIN as tools for integrating all of these observations. Our objective is to understand the biodiversity patterns in the Southern Ocean and how these might change through time.  
  Programme 1124;1142  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1873-9652 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 123  
Permanent link to this record
 

 
Author Camille Moreau, Quentin Jossart, Bruno Danis, Marc Eléaume, Henrik Christiansen, Charlène Guillaumot, Rachel Downey, Thomas Saucède file  doi
openurl 
  Title The high diversity of Southern Ocean sea stars (Asteroidea) reveals original evolutionary pathways Type Journal
  Year 2021 Publication Progress in oceanography Abbreviated Journal  
  Volume 190 Issue Pages 102472  
  Keywords Antarctica Biodiversity COI mtDNA Echinodermata Evolution Phylogeography  
  Abstract Benthic life in the Southern Ocean (SO) features unique life history traits and species assemblages, but the origin and evolution of many of these taxonomic groups is still unclear. Sea stars (Asteroidea) are a diversified and abundant component of benthic ecosystems in the SO, in which they can play key ecological roles. Former studies suggest that the diversity of the entire class is still poorly known and underestimated, hampering the assessment of the origin and evolution of the class in the SO. In the present study, we analyse spatial patterns of SO sea star diversity using an occurrence database of ~14,000 entries. The biogeographic analysis is coupled with the exploration of an extensive molecular phylogeny based on over 4,400 specimen sequences to inform, support and/or question the observed diversity patterns. We show that the current taxonomy of SO asteroids needs revision and that their diversity has generally been overlooked and misinterpreted. Molecular results highlight the recent diversification of most studied taxa, at genus and species levels, which supports an evolutionary scenario referring to successive invasion and exchange events between the SO and adjacent regions, and clade diversification during periods of rapid environmental changes driven by the succession of glacial cycles. Our work advocates for employing, and endorsing the use of extensive genetic barcode libraries for biodiversity studies.  
  Programme 1044,1124  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0079-6611 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 8183  
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Author Claudio A. González-Wevar, Karin Gérard, Sebastian Rosenfeld, Thomas Saucède, Javier Naretto, Angie Díaz, Simon A. Morley, Paul Brickle, Elie Poulin file  doi
isbn  openurl
  Title Cryptic speciation in Southern Ocean Aequiyoldia eightsii (Jay, 1839): Mio-Pliocene trans-Drake Passage separation and diversification Type Journal
  Year 2019 Publication Progress in Oceanography Abbreviated Journal  
  Volume 174 Issue Pages 44-54  
  Keywords Antarctic Peninsula Antarctic-Magellan Connection Biogeography Kerguelen Islands Morphometry Phylogeny South America Southern Ocean Systematics  
  Abstract The species of the genus Aequiyoldia Soot-Ryen, 1951, previously known as Yoldia, are common, soft-substratum, sareptid bivalves. In the Southern Ocean, Aequiyoldia eightsii (Jay, 1839) was originally described from the Antarctic Peninsula and has also been reported in southern South America. The species A. woodwardi (Hanley, 1960) was reported for the Falkland/Malvinas Islands and Tierra del Fuego, but this taxon has been recently synonymised within the broadly distributed A. eightsii. Aequiyoldia has received little attention across its distribution in the Southern Ocean, and although its taxonomy and systematics remain uncertain, all the species have been grouped under a single and broadly distributed unit: A. eightsii. Nevertheless, preliminary mtDNA comparisons demonstrated a marked genetic divergence (>7%) between A. eightsii populations from South America and Antarctic Peninsula. In order to further understand the diversity and biogeography of Aequiyoldia, we analyzed A. eightsii populations from different provinces of the Southern Ocean including South America (SA), the Falkland/Malvinas Islands (FI), the Antarctic Peninsula (AP), and Kerguelen Islands (KI). Individuals were characterized according to typical diagnostic morphological measurements and phylogenetic relationships were reconstructed based on mtDNA (cytochrome c oxidase subunit I). Patterns of genetic divergence of nucDNA intergenic transcribed spacers (ITS1, ITS2) were also estimated. The statistical analysis of external diagnostic characteristics revealed two morphotypes: (1) individuals with the morphology recorded for the nominal FI species, A. woodwardi, and (2) individuals from SA, AP, and KI, with the morphology recorded for A. eightsii. However, phylogenetic reconstructions based on mtDNA and nucDNA suggest the presence of at least five lineages within A. eightsii including: one lineage in Kerguelen Island, two lineages in the Antarctic Peninsula, one lineage in South America, and the last one restricted to the Falkland/Malvinas Islands. Such results are evidence that the Antarctic Polar Front represents an historical biogeographic barrier for this group and that after the separation of these lineages, they followed independent evolutionary pathways in different provinces of the Southern Ocean. Estimates of divergence time suggest that KI separated from other Aequiyoldia lineages close to the middle Miocene. Following this, the separation between the AP and SA lineages occurred at the end of the Miocene around 7.5 Ma. Finally, Aequiyoldia diversified during the Pliocene in Antarctic Peninsula (∼4.5 Ma) and South America (∼3.0 Ma). Individuals from FI exhibited morphological differences, and 4% of divergence from South American individuals, suggesting that A. woordwardi could be revalidated. Similarly, the marked molecular divergence between the KI and the rest of the recorded lineages also support the validity of A. kerguelensis (Thiele, 1931).  
  Programme 1044  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0079-6611 ISBN 0079-6611 Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 7129  
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