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| Lecointre, Guillaume; Ameziane, Nadia; Boisselier, Marie-catherine; Bonillo, Celine; Busson, Frederic; Causse, Romain; Chenuil, Anne; Couloux, Arnaud; Coutanceau, Jean-pierre; Cruaud, Corinne; D'Udekem D'Acoz, Cedric; De Ridder, Chantal; Denys, Gael; Dettai, Agnes; Duhamel, Guy; Eleaume, Marc; Feral, Jean-pierre; Gallut, Cyril; Havermans, Charlotte; Held, Christoph; Hemery, Lenaig; Lautredou, Anne-claire; Martin, Patrick; Ozouf-costaz, Catherine; Pierrat, Benjamin; Pruvost, Patrice; Puillandre, Nicolas; Samadi, Sarah; Saucede, Thomas; Schubart, Christoph; David, Bruno. |
| There has been a significant body of literature on species flock definition but not so much about practical means to appraise them. We here apply the five criteria of Eastman and McCune for detecting species flocks in four taxonomic components of the benthic fauna of the Antarctic shelf: teleost fishes, crinoids (feather stars), echinoids (sea urchins) and crustacean arthropods. Practical limitations led us to prioritize the three historical criteria (endemicity, monophyly, species richness) over the two ecological ones (ecological diversity and habitat dominance). We propose a new protocol which includes an iterative fine-tuning of the monophyly and endemicity criteria in order to discover unsuspected flocks. As a result nine "full" species flocks... |
| Tipo: Text |
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| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00296/40754/39754.pdf |
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| Michel, Loic; Danis, Bruno; Dubois, Philippe; Eleaume, Marc; Fournier, Jerome; Gallut, Cyril; Jane, Philip; Lepoint, Gilles. |
| In recent years, sea ice cover along coasts of East Antarctica has tended to increase. To understand ecological implications of these environmental changes, we studied benthic food web structure on the coasts of Adélie Land during an event of unusually high sea ice cover (i.e. two successive austral summers without seasonal breakup). We used integrative trophic markers (stable isotope ratios of carbon, nitrogen and sulfur) to build ecological models and explored feeding habits of macroinvertebrates. In total, 28 taxa spanning most present animal groups and functional guilds were investigated. Our results indicate that the absence of seasonal sea ice breakup deeply influenced benthic food webs. Sympagic algae dominated the diet of many key consumers, and... |
| Tipo: Text |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00500/61194/64726.pdf |
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| Hemery, Lenaig G.; Ameziane, Nadia; Eleaume, Marc. |
| This circumpolar dataset of the comatulid (Echinodermata: Crinoidea) Promachocrinus kerguelensis (Carpenter, 1888) from the Southern Ocean, documents biodiversity associated with the specimens sequenced in Hemery et al. (2012). The aim of Hemery et al. (2012) paper was to use phylogeographic and phylogenetic tools to assess the genetic diversity, demographic history and evolutionary relationships of this very common and abundant comatulid, in the context of the glacial history of the Antarctic and Sub-Antarctic shelves (Thatje et al. 2005, 2008). Over one thousand three hundred specimens (1307) used in this study were collected during seventeen cruises from 1996 to 2010, in eight regions of the Southern Ocean: Kerguelen Plateau, Davis Sea, Dumont d'Urville... |
| Tipo: Text |
Palavras-chave: Antarctica; Crinoidea; Cytochrome Oxydase subunit I; Echinodermata; Phylogeography; Promachocrinus; Southern Ocean; Sub-Antarctic. |
| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00296/40758/39749.pdf |
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