@article {7323, title = {Fatty acid compositions of four benthic species along the salinity gradient of a human impacted and mangrove dominated tropical estuary (Can Gio, Vietnam)}, journal = {Journal of Sea Research}, year = {2020}, month = {Jan-09-2020}, pages = {101955}, abstract = {Tropical estuaries are characterised by high spatial and temporal variability in the conditions they provide for living organisms, which in turn may affect their biochemical composition. Anthropogenic contaminants such as nutrients, antibiotics, pesticides and trace metals may also affect the biochemical composition of these coastal organisms, notably with regard to fatty acids (FA), of which optimal species-specific polyunsaturated FA ratios are required to maintain living species in healthy conditions. The objective of this study was to evidence changes in the FA profile of four ubiquist benthic species in relation to the salinity gradient of a human impacted and mangrove dominated tropical estuary (Can Gio, Southern Vietnam). Among the four benthic species studied, two exhibited spatial and seasonal changes in their FA composition: the varunid crab\ Metaplax elegans\ and the predatory mangrove murex snail\ Chicoreus capucinus. Proportions of the FA 16:1ω7, proportions of highly unsaturated FA and ratios of eicosapentanoic acid/arachidonic acid in the tissues of both species seemed related to upstream inputs. Different relative abundances of benthic microalgae affected both claw muscle and hepatopancreas FA composition of\ M. elegans, while the FA composition of\ C. capucinus\ shows that the influence of prey{\textquoteright}s diet might be transferred within trophic chains. Finally, some species, such as\ Nerita balteata\ and\ Metapenaeus ensis\ might have more adaptive capacities, because of their mobility, or because of their specific metabolic pathways, minimizing the potential impact of spatial and/or temporal changes in food resources quality. A starvation experiment involving\ N. balteata\ actually revealed the metabolic synthesis of non-methylene interrupted FA that may confer cell membranes a higher resistance to external stressors than common polyunsaturated FA. Our study highlights the future possibility of using the FA composition of sentinel organisms (i.e. feeding on specific food resources and/or especially subject to environmental stresses) as a bioindicator tool to assess mangrove ecosystems health.}, issn = {13851101}, doi = {10.1016/j.seares.2020.101955}, url = {https://linkinghub.elsevier.com/retrieve/pii/S1385110120301556}, author = {Frank David and Marchand, Cyril and Van, Vinh Truong and Taillardat, Pierre and Thanh-Nho, Nguyen and Tarik Meziane} } @article {7385, title = {Functional diversity of microboring Ostreobium algae isolated from corals}, journal = {Environmental Microbiology}, year = {2020}, month = {Dec-10-2020}, abstract = {The filamentous chlorophyte\ Ostreobium\ sp. dominates shallow marine carbonate microboring communities, and is one of the major agents of reef bioerosion. While its large genetic diversity has emerged, its physiology remains little known, with unexplored relationship between genotypes and phenotypes (endolithic\ versus\ free-living growth forms). Here, we isolated nine strains affiliated to two lineages of\ Ostreobium\ (\>8\% sequence divergence of the plastid gene\ rbcL), one of which was assigned to the family Odoaceae, from the fast-growing coral host\ Pocillopora acuta\ Lamarck 1816. Free-living isolates maintained their bioerosive potential, colonizing pre-bleached coral carbonate skeletons. We compared phenotypes, highlighting shifts in pigment and fatty acid compositions, carbon to nitrogen ratios and stable isotope compositions (δ13C and δ15N). Our data show a pattern of higher chlorophyll\ b\ and lower arachidonic acid (20:4ω6) content in endolithic\ versus\ free-living\ Ostreobium. Photosynthetic carbon fixation and nitrate uptake, quantified via 8 h pulse-labeling with\ 13C-bicarbonate and\ 15N-nitrate, showed lower isotopic enrichment in endolithic compared to free-living filaments. Our results highlight the functional plasticity of\ Ostreobium\ phenotypes. The isotope tracer approach opens the way to further study the biogeochemical cycling and trophic ecology of these cryptic algae at coral holobiont and reef scales.}, issn = {1462-2912}, doi = {10.1111/1462-2920.15256}, url = {https://onlinelibrary.wiley.com/doi/10.1111/1462-2920.15256}, author = {Mass{\'e}, Ana{\"\i}s and Tribollet, Aline and Tarik Meziane and Bourguet-Kondracki, Marie-Lise and Y{\'e}pr{\'e}mian, Claude and S{\`e}ve, Charlotte and Thiney, Najet and Longeon, Arlette and Cout{\'e}, Alain and Domart-Coulon, Isabelle} } @article {6869, title = {Fatty acids, C and N dynamics and stable isotope ratios during experimental degradation of shrimp pond effluents in mangrove water}, journal = {Marine Environmental Research}, volume = {150}, year = {2019}, month = {Jan-09-2019}, pages = {104751}, issn = {01411136}, doi = {10.1016/j.marenvres.2019.104751}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0141113619301953}, author = {Vivier, Baptiste and Frank David and Cyril Marchand and Thanh-Nho, Nguyen and Tarik Meziane} } @article {4800, title = {Food resources of the bivalve Astarte elliptica in a sub-Arctic fjord: a multi-biomarker approach}, journal = {Marine Ecology Progress Series}, volume = {567}, year = {2017}, pages = {139-156}, abstract = {

ABSTRACT: It is generally agreed that pelagic-benthic coupling is tight on Arctic shelves, i.e. that organic matter produced in the surface layers supports the seafloor and benthos. However, this paradigm is mainly based on the assumption that phytoplankton and ice algae are the main sources of carbon for the benthic communities. Climate change is expected to alter the relative contribution of food sources for benthic organisms. Macroalgal biomass is predicted to increase in near-shore systems in response to increased temperature and reduced sea ice cover. Thus, a better understanding of the relative contribution of benthic and pelagic components in benthic food webs in the Arctic is needed. In this study, a multi-biomarker approach (stable isotopes, fatty acid trophic markers, and compound-specific stable isotope analysis) was applied to link potential sources of carbon, including particulate organic matter from subsurface and bottom waters, sediment organic matter, and 6 macroalgal species to the diet of the bivalve Astarte elliptica collected below the euphotic zone in a sub-Arctic fjord (Kobbefjord, Greenland). Results showed that A. elliptica feeds on particulate and sediment organic matter and that brown macroalgae significantly support the Arctic benthic food web. Multi-biomarker approaches can be used to determine the diet of benthic organisms and track temporal variability in sources of food. It therefore appears to be an interesting method to study food regime strategies in response to changing primary production dynamics.

}, author = {Gaillard, B and Tarik Meziane and R{\'e}jean Tremblay and P Archambault and Blicher, M E and Laurent Chauvaud and Rysgaard, S and Fr{\'e}d{\'e}ric Olivier} } @article {4340, title = {The fate of C4 and C3 macrophyte carbon in central Amazon floodplain waters: Insights from a batch experiment}, journal = {Limnologica - Ecology and Management of Inland Waters}, volume = {59}, year = {2016}, pages = {90-98}, abstract = {

The central Amazon floodplains are particularly productive ecosystems, where a large diversity of organic carbon sources are available for aquatic organisms. Despite the fact that C4 macrophytes generally produce larger biomasses than C3 macrophytes, food webs in the central Amazon floodplains appear dominantly based on a C3 carbon source.

In order to investigate the respective fate and degradation patterns of C4 and C3 aquatic plant-derived material in central Amazon floodplains, we developed a 23-days batch experiment. Fatty acid and carbon concentrations as well as stable isotope compositions were monitored over time in 60\ L tanks. These tanks contained Amazon water, with different biomasses of C3 and C4 macrophyte, representative of in situ densities occurring in central Amazon floodplains.

In the C4Paspalum repens treatments, organic (POC, DOC) and inorganic carbon (DIC) got rapidly enriched in 13C, whereas in the C3Salvinia auriculata treatments, POC and DOC showed little change in concentration and isotopic composition, and DIC got depleted in 13C. The contribution of P. repens to POC and DOC was estimated to reach up to 94.2 and 70.7\%, respectively. In contrast, no differences were reported between the C3S. auriculata and control treatments, an observation attributed to the lower C3 biomass encountered in the field, to a slower degradation rate of C3 compared to C4 compounds, and to similar isotopic compositions for river POC and DOC, and C3 compounds.

The 13C enrichments of POC, DOC, and DIC from P. repens treatments were attributed to an enhanced bacterially-mediated hydrolysis and mineralization of C4 material. Evolutions of bacterial abundance and branched fatty acid concentrations confirmed the role of heterotrophic microbial communities in the high P. repens decomposition rate. Our experiment highlights the predominant role of C4 aquatic plants, as a large source of almost entirely biodegradable organic matter available for heterotrophic activity and CO2 outgassing to the atmosphere.

}, keywords = {Central amazon, Degradation, fatty acids, Floodplains, Macrophytes, Stables isotopes}, doi = {doi:10.1016/j.limno.2016.03.008}, author = {Jean-Michel Mortillaro and Passarelli, C and Gwena{\"e}l Abril and C{\'e}dric Hubas and Luis Felipe Artigas and Marc F Benedetti and Najet Thiney and Moreira-Turcq, P and P{\'e}rez, M A and Vidal, L and Tarik Meziane} } @article {4637, title = {First record of Siganus randalli (Teleost, Siganidae) in New Caledonia, and comments on its diet}, journal = {Marine Biodiversity Records}, volume = {9}, year = {2016}, month = {11/2016}, pages = {1-5}, abstract = {

Background: Most of the 29 Siganidae species are widely distributed through the Indo-Pacific area. In New
Caledonia, these family was represented by 12 species. The present report is the first record of Siganus randalli in New
Caledonian waters and provide information on its diet.
Methods: Three specimens of Siganus randalli were caught in shallow mangrove waters of the southern part of New
Caledonia. Their stomach contents and isotopic signatures (carbon and nitrogen) were analyzed and compared to
others siganids species.
Results and conclusion: This note provides the most southerly record of the rabbitfish Siganus randalli, which extends
its distribution range by 1200 km southward and 1300 km southwest. The data on its diet, when compared with other
co-occurring or more reef-associated siganid species, provide information on feeding processes and ecological
functions associated with its mangrove habitat.
Keywords: Variegated rabbitfish, Diet, Stomach content, Isotope, SW pacific
Abbreviations: ADECAL, Agence de d{\'e}veloppement {\'e}conomique de la Nouvelle-Cal{\'e}donie; ARR, Arr{\^e}t{\'e};
C, Carbon; DENV, Direction de l{\textquoteright}environnement; G, grams; IRI, Index of relative importance; LIVE, Laboratoire
insulaire du vivant et de l{\textquoteright}environnement; MM, millimeter; N, Nitrogen; SD, standard deviation; TL, Total length;
UNC, Universit{\'e} de la Nouvelle-Cal{\'e}donie

}, doi = {DOI 10.1186/s41200-016-0082-x}, author = {Thibaud Moleana and Luc Della-Patrona and Tarik Meziane and Yves Letourneur} } @article {3663, title = {Foraminiferal assemblages as bioindicators to assess potential pollution in mangroves used as a natural biofilter for shrimp farm effluents (New Caledonia)}, journal = {Marine Pollution Bulletin}, volume = {93}, year = {2015}, month = {15 April 2015}, pages = {103-120}, type = {Research}, abstract = {

In New Caledonia, semi-intensive shrimp farms release untreated effluents into the mangrove. Foraminiferal assemblages were analyzed for assessing the impact of effluent release on the benthic compartment. Comparison was made between samples collected (1) in an effluent receiving mangrove before and after the rearing cycle, and (2) for one-year monitoring an effluent receiving and a control mangrove. The distribution of foraminiferal assemblages was primarily driven by the gradient between\ Rhizophora\ stands and salt-flats, related to salinity and tidal elevation, and by seasonal cycles. The potential impact of effluent release was due to the combined effects of normal-saline effluents on surface salinity, and of nutrient input and microbial stimulation on food availability. Foraminiferal assemblages did not indicate a substantial impact of farm effluents and suggest that semi-intensive shrimp farming using mangrove for effluent discharge may appear as a sustainable solution in New Caledonia, when considering only the impact on the mangrove itself.

}, keywords = {Effluents, fatty acids, Foraminifera, Mangrove, Shrimp farming, SW Pacific}, doi = {10.1016/j.marpolbul.2015.02.009}, author = {Debenay, J-P and Cyril Marchand and Nathalie Molnar and Ad{\'e}laide Aschenbroich and Tarik Meziane} } @article {7352, title = {Fatty acid markers as an indicator for temporal changes in food sources of the bivalve Quidnipagus palatum}, journal = {Aquatic Ecosystem Health \& Management}, volume = {12}, year = {2009}, month = {Jun-11-2011}, pages = {390 - 400}, issn = {1463-4988}, doi = {10.1080/14634980903347589}, url = {http://www.tandfonline.com/doi/abs/10.1080/14634980903347589}, author = {Bachok, Zainudin and Tarik Meziane and Mfilinge, Prosper L. and Tsuchiya, Makoto} } @article {7358, title = {Fate of mangrove organic matter along a subtropical estuary: small-scale exportation and contribution to the food of crab communities}, journal = {Marine Ecology Progress Series}, volume = {312}, year = {2006}, month = {Dec-04-2007}, pages = {15 - 27}, issn = {0171-8630}, doi = {10.3354/meps312015}, url = {http://www.int-res.com/abstracts/meps/v312/p15-27/}, author = {Tarik Meziane and d’Agata, F and Lee, SY} } @article {7328, title = {Fatty acids as trophic tracers in an experimental estuarine food chain: Tracer transfer}, journal = {Journal of Experimental Marine Biology and Ecology}, volume = {336}, year = {2006}, month = {Jan-08-2006}, pages = {42 - 53}, issn = {00220981}, doi = {10.1016/j.jembe.2006.04.004}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0022098106002012}, author = {Hall, David and Lee, S.Y. and Tarik Meziane} } @article {7336, title = {Fatty acids in decomposing mangrove leaves: microbial activity, decay and nutritional quality}, journal = {Marine Ecology Progress Series}, volume = {265}, year = {2003}, month = {Jan-01-2003}, pages = {97 - 105}, issn = {0171-8630}, doi = {10.3354/meps265097}, url = {http://www.int-res.com/abstracts/meps/v265/p97-105/}, author = {Mfilinge, PL and Tarik Meziane and Bachok, Z and Tsuchiya, M} } @article {7347, title = {Feeding deterrence of Azolla in relation to deoxyanthocyanin and fatty acid composition}, journal = {Aquatic Botany}, volume = {74}, year = {2002}, month = {Jan-10-2002}, pages = {181 - 187}, issn = {03043770}, doi = {10.1016/S0304-3770(02)00077-3}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0304377002000773}, author = {Cohen, Michael F and Tarik Meziane and Tsuchiya, Makoto and Yamasaki, Hideo} } @article {7357, title = {Fatty acids as tracers of organic matter in the sediment and food web of a mangrove/intertidal flat ecosystem, Okinawa, Japan}, journal = {Marine Ecology Progress Series}, volume = {200}, year = {2000}, month = {Jan-01-2000}, pages = {49 - 57}, issn = {0171-8630}, doi = {10.3354/meps200049}, url = {http://www.int-res.com/abstracts/meps/v200/p49-57/}, author = {Tarik Meziane and Tsuchiya, M} }