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Shoreface migrations at the shelf edge and sea-level changes around the Last Glacial Maximum (Gulf of Lions, NW Mediterranean) ArchiMer
Jouet, Gwenael; Berne, Serge; Rabineau, Marina; Bassetti, Maria-angela; Bernier, P.; Dennielou, Bernard; Sierro, F.j.; Flores, J.a.; Taviani, M..
The Bourcart–Hérault canyon interfluve in the Gulf of Lions (NW Mediterranean) was the site of very high sedimentation (up to 2.5 m/kyr) around the Last Glacial Maximum, due to the vicinity of major fluvial systems that fed the shelf edge. Shoreface deposits and offshore muds deposited during each glacial/interglacial 100 kyr-cycle, created a repeated motif with high-angle and low-angle clinoforms on seismic profiles. New detailed morphological, sedimentological and paleo-environmental data, constrained by 14C dating, allow us to propose a scenario for the evolution of this critical area between 46 and 15 cal. kyr BP. The major seismic sequence (S5), formed as a forced regression during the overall sea-level fall between MIS-3 and MIS-2, can be sub-divided...
Tipo: Text Palavras-chave: Heinrich events; Western Mediterranean; High resolution sedimentary record; Relative sea level; Last Glacial Maximum.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-2328.pdf
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Trophic relationships in a deep Mediterranean cold-water coral bank (Santa Maria di Leuca, Ionian Sea) ArchiMer
Carlier, A.; Le Guilloux, E.; Olu, Karine; Sarrazin, Jozee; Mastrototaro, F.; Taviani, M.; Clavier, J..
Cold-water corals (CWC) are frequently reported from deep sites with locally accelerated currents that enhance seabed food particle supply. Moreover, zooplankton likely account for ecologically important prey items, but their contribution to CWC diet remains unquantified. We investigated the benthic food web structure of the recently discovered Santa Maria di Leuca (SML) CWC province (300 to 1100 m depth) located in the oligotrophic northern Ionian Sea. We analyzed stable isotopes (delta C-13 and delta N-15) of the main consumers (including ubiquitous CWC species) exhibiting different feeding strategies, zooplankton, suspended particulate organic matter (POM) and sedimented organic matter (SOM). Zooplankton and POM were collected 3 m above the coral...
Tipo: Text Palavras-chave: Particulate organic matter; Zooplankton; Stable isotopes; Food web; Mediterranean Sea; Benthic community; Cold water corals.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-7450.pdf
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