@article {7000, title = {Sources of organic matter in an atypical phytoplankton rich coral ecosystem, Marquesas Islands: composition and properties}, journal = {Marine Biology}, volume = {167}, year = {2020}, month = {Jan-07-2020}, abstract = {The purpose of this work is to characterize several potential sources of organic matter (OM) in the Marquesas Islands, French Polynesia, and to understand how these sources contribute to OM pools. Stable isotope (δ13C and δ15N) and fatty acid (FA) compositions of OM potential sources (algal turf, benthic macroalgae, detrital terrestrial plants (DTP), phytoplankton) and OM pools (sediment (SOM) and particulate organic matter (POM)) were studied in coastal areas in Nuku Hiva Island. Isotope compositions of marine POM (δ13C = -22.5 {\textpm} 0.8 {\textperthousand}; δ15N = 12.1 {\textpm} 1.1 {\textperthousand}) and SOM (δ13C = -19.1 {\textpm} 0.9 {\textperthousand}; δ15N = 14.4 {\textpm} 0.5 {\textperthousand}) highlighted that OM sources at the base of the local food web had unusually high δ15N values. Potential FA markers of diatoms and/or cyanobacteria (20:5ω3 and 16:1ω7) were found in these two OM pools. In addition, coastal SOM also displayed FA markers of bacteria, macroalgae and terrestrial plants. Formarine POM, potential macroalgae FA markers were recorded (18:2ω6 and 16:2ω4). The stable isotope mixing model highlighted the major contribution of phyto-plankton to the coastal SOM (62\%), followed by benthic macroalgae (32\%), whereas marine POM was mainly composed of a mixture of algal turf and phytoplankton in similar averaged proportions (38\%) but presenting wide variations. Our results as a whole strongly suggest that pelagic-benthic coupled processes drive the characteristics and properties of OM sources.}, issn = {0025-3162}, doi = {10.1007/s00227-020-03703-z}, url = {http://link.springer.com/10.1007/s00227-020-03703-z}, author = {Fey, P. and Parravicini, V. and Lebreton, B. and Tarik Meziane and Ren{\'e} Galzin and Zubia, M. and Bӑnaru, D. and Letourneur, Y.} } @article {6041, title = {Phylog{\'e}ographie de Neritina stumpffi Boettger, 1890 et Neritina canalis Sowerby, 1825 (Gastropoda, Cycloneritida, Neritidae)}, journal = {Zoosystema}, volume = {41}, year = {2019}, pages = {237-248}, abstract = {

The population genetic structure of Neritina stumpffi Boettger, 1890 in the Indo-Pacific and Neritina canalis Sowerby, 1825 in the Pacific Ocean were investigated using a fragment of the mitochondrial COI gene. The haplotype network of N. stumpffi showed a genetic structuration between the two oceans, with shared haplotypes. Concerning N. canalis, western Pacific and central Pacific populations are genetically structured, without shared haplotypes. The Coral Triangle appears to have played a filtering barrier role for N. stumpffi, whose presence in both oceans could be explained by the flow of the south-equatorial current. A barrier to the dispersal of N. canalis between the western and the central Pacific may also exist.

}, keywords = {COI gene, Indian Ocean, larval dispersion, Pacific Ocean, Phylogeography}, author = {Ahmed Abdou and Clara Lord and Philippe Keith and Ren{\'e} Galzin} } @article {7512, title = {Revision of the species complex{\textquoteright}Neritina pulligera{\textquoteright}(Gastropoda, Cyclonetimorpha: Neritidae) using taxonomy and barcoding}, journal = {Vie et Milieu / Life \& Environment}, volume = {67}, year = {2017}, month = {2017}, pages = {149-161}, author = {Ahmed Abdou and Ren{\'e} Galzin and Clara Lord and Denys, Ga{\"e}l PJ and Philippe Keith} } @article {4355, title = {Freshwater neritids (Mollusca: Gastropoda) of tropical islands, amphidromy as a life cycle, a review}, journal = {Revue d{\textquoteright}{\'e}cologie (Terre et Vie)}, volume = {70}, year = {2015}, pages = {387-397}, author = {Ahmed Abdou and Philippe Keith and Ren{\'e} Galzin} }