@article {9214, title = {Diet quality determines blue mussel physiological status: A long-term experimental multi-biomarker approach}, journal = {Journal of Experimental Marine Biology and Ecology}, volume = {563}, year = {2023}, month = {Jan-06-2023}, pages = {151894}, issn = {00220981}, doi = {10.1016/j.jembe.2023.151894}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0022098123000266}, author = {Li{\'e}nart, Camilla and Tedengren, Michael and Garbaras, Andrius and Lim, Hwanmi and Chynel, Mathias and Robinson, Christophe and Tarik Meziane and Karlson, Agnes M.L.} } @article {9215, title = {Sex-specific seasonal variations in the fatty acid and carotenoid composition of sea cucumber gonads and implications for aquaculture}, journal = {Marine Biology}, volume = {170}, year = {2023}, month = {Jan-04-2023}, issn = {0025-3162}, doi = {10.1007/s00227-023-04198-0}, url = {https://link.springer.com/10.1007/s00227-023-04198-0}, author = {Frank David and Herault, Gwen and Ameziane, Nadia and Tarik Meziane and Badou, Aicha and C{\'e}dric Hubas} } @article {8534, title = {Chlordecone-contaminated epilithic biofilms show increased adsorption capacities}, journal = {Science of The Total Environment}, volume = {825}, year = {2022}, month = {Jan-06-2022}, pages = {153942}, issn = {00489697}, doi = {10.1016/j.scitotenv.2022.153942}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0048969722010348}, author = {C{\'e}dric Hubas and Monti, Dominique and Jean-Michel Mortillaro and Augagneur, Sylvie and Carbon, Anne and Duran, Robert and Karama, Solange and Tarik Meziane and Pardon, Patrick and Risser, Th{\'e}o and Tapie, Nathalie and Najet Thiney and Budzinski, H{\'e}l{\`e}ne and Lauga, B{\'e}atrice} } @article {8845, title = {Contrasting organic matter composition in pristine and eutrophicated mangroves revealed by fatty acids and stable isotopes (Rio de Janeiro, Brazil)}, journal = {Estuarine, Coastal and Shelf Science}, year = {2022}, month = {Jan-09-2022}, pages = {108061}, abstract = {Mangrove sediments have a high capacity of carbon storage, as the result of larger organic matter (OM) inputs from mangrove trees (litter fall and fine roots production) than OM microbial degradation and export to coastal waters. Mangrove sediments also act as traps for suspended matter and particulate OM (POM) from surrounding water masses. Fatty acids (FAs) markers, δ13C and δ15N signatures were used here to characterize the OM composition in three mangroves located in three coastal embayments of the Rio de Janeiro state (Brazil) with increasing urbanization from a pristine mangrove M1 to a moderately impacted mangrove M2 and a highly impacted mangrove M3. In these mangroves, the δ15N signature of tree leaves and sediments increases with anthropogenic influence, consistent with a large-scale eutrophication gradient along the three regions. At mangrove M1, predominant OM inputs from mangrove trees are highlighted by high proportions of long-chain fatty acids, particularly in the inland station, where high organic carbon concentrations (126\ {\textpm}\ 108\ mg\ g-1) indicate limited sedimentation of mineral particles and high carbon storage capacities. The sedimentary OM of M3 mangrove was more labile as confirmed by the higher proportions of algal fatty acids, enriched δ13C signature and the C/N ratio 1.6 times lower (p\ \<\ 0.001) than in the pristine mangrove M1. At the M2 mangrove site, high contribution of bacterial FAs (around 20\%) to sedimentary OM and high proportion of poorly biodegradable saturated fatty acids suggest that bacteria degrade algal labile OM in surface sediments but do not mineralize the most refractory fraction of OM. At the eutrophic M3 site, our findings suggest that deposition of labile POM induced an increase of fungal biomass on the sediment, apparently enhancing the microbial loop, and potentially leading to mineralization of refractory OM and carbon losses through a priming effect.}, issn = {02727714}, doi = {10.1016/j.ecss.2022.108061}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0272771422003195}, author = {Chynel, Mathias and Rockomanovic, Sofia and Gwena{\"e}l Abril and Barroso, Glenda and Marotta, Humberto and Machado, Wilson and Sanders, Christian J. and Najet Thiney and Tarik Meziane} } @article {8447, title = {Pull the trigger: interplay between benthic and pelagic cues driving the early recruitment of a natural bivalve assemblage}, journal = {Ecosphere}, volume = {13}, year = {2022}, month = {Jan-01-2022}, abstract = {Larval settlement and recruitment are crucial phases in the benthic-pelagic life cycle of marine benthic invertebrates that controls population dynamic and habitat connectivity. Our study investigated potential triggers driving the settlement of bivalve larvae in a highly dynamic intertidal coarse sand habitat. The early recruitment rate of five dominant bivalve families and abiotic conditions, particulate (\<20 {\textmu}m) organic matter and sediment organic matter, were monitored from May to October 2014. Pelagic particulate organic matter (\<20 {\textmu}m) was dominated by picoplankton throughout the sampling period, with a substantial diatom bloom in spring. Sediment was characterized by fresh organic matter in spring, as suggested by the dominant contribution of polyunsaturated fatty acids, and by a higher proportion of bacterial fatty acid markers during late summer. Different dynamics were also observed in early bivalve recruitment rates, with four different patterns observed over the sampling period. Multiple regression analysis on selected bivalve families showed species-specific responses to trophic settlement triggers. Indeed, the larva recruitment rate of Mytilidae paralleled pelagic concentration of picoeucaryotes, with the peak early recruitment rate occurring in spring. Surprisingly, the early recruitment rate of Mactridae larvae showed a significant relation to bacterial concentration in the surficial sediment at the end of summer. While the Mytilidae results in such a eutrophic system confirmed those of a previous study in oligotrophic lagoons, therefore supporting the trophic settlement trigger hypothesis, more work is needed to understand the potential role of bacteria in the early recruitment of Mactridae. These results highlight for the first-time inter-specific differences in trophic cues that potentially trigger primary settlement in natural bivalve assemblages.}, keywords = {bacteria, bivalves, Chausey Archipelago, early larval recruitment, fatty acids, picoeucaryotes, trophic settlement trigger}, issn = {2150-8925}, doi = {10.1002/ecs2.v13.110.1002/ecs2.3672}, url = {https://onlinelibrary.wiley.com/toc/21508925/13/1}, author = {Androuin, Thibault and Barbier, Pierrick and Foret, Martin and Tarik Meziane and Thomas, Mathilde and Archambault, Philippe and Winkler, Gesche and Tremblay, Rejean and Fr{\'e}d{\'e}ric Olivier} } @article {7211, title = {Links between introduced fish and zooplanktonic and zoobenthic food sources in the food webs of two reservoirs of a semi-arid zone in Algeria}, journal = {African Journal of Aquatic Science}, volume = {46}, year = {2021}, month = {09/2020}, pages = {33- 44}, abstract = {Few studies have focused on the trophic functioning of the reservoirs in Algeria. The study of the gut contents of fish species, as well as the analysis of the stable isotopes of 13C and 15N in the environment, were carried out on samples collected during spring 2010 in two reservoirs: Ghrib and Harreza of the upper Cheliff plain (Algeria) within a semi-arid climate zone. In each of the reservoirs, 13C and 15N were measured in sediments, particulate organic matter (POM), macrophytes, zooplankton, zoobenthos and fish. The isotopic analysis shows that the carbon values that supply both reservoirs, Ghrib and Harreza, were -31.16 {\textpm} 0.05 \< 13C \< -18.01 {\textpm} 0.21{\textperthousand} and -30.82 {\textpm} 0.07 \< 13C \< -17.24 {\textpm} 3.50{\textperthousand}, respectively. The carnivorous fish Sander lucioperca, and Abramis brama, an omnivorous fish, were allocated to the top of the food web in Ghrib and Harreza reservoirs, respectively. In the latter, a reservoir with low hydrodynamism and depth, the food web is simpler with a single fish species, which benefits from both benthic and pelagic sources. In Ghrib, a deeper dam with stronger hydrodynamics, only the riverine crab Potamon algeriense exploits the benthic sources, whereas fish mainly feed on zooplankton}, issn = {1608-5914}, doi = {10.2989/16085914.2020.1787124}, url = {https://www.tandfonline.com/doi/full/10.2989/16085914.2020.1787124}, author = {Djezzar, M and Mortillaro, JM and Doumandji, SE and Tarik Meziane} } @article {8347, title = {Multi-trophic markers illuminate the understanding of the functioning of a remote, low coral cover Marquesan coral reef food web}, journal = {Scientific Reports}, volume = {11}, year = {2021}, month = {Jan-12-2021}, abstract = {We studied the food web structure and functioning of a coral reef ecosystem in the Marquesas Islands, French Polynesia, characterized by low coral cover, high sea surface temperature and meso- to eutrophic waters. The Marquesas constitute a relevant ecosystem to understand the functioning of low diversity reefs that are also subject to global change. A multi-tracer assessment of organic matter pathways was run to delineate ecosystem functioning, using analysis of fatty acids, bulk and compound specific stable isotope analysis and stable isotopes mixing models. Macroalgae and phytoplankton were the two major food sources fueling this food web with, however, some marked seasonal variations. Specifically, zooplankton relied on phytoplankton-derived organic matter and herbivorous fishes on macroalgae-derived organic matter to a much higher extent in summer than in winter (~ 75\%\ vs. ~ 15\%, and ~ 70 to 75\%\ vs. ~ 5 to 15\%, respectively) . Despite remarkably high δ15N values for all trophic compartments, likely due to local dynamics in the nitrogen stock, trophic levels of consumers were similar to those of other coral reef ecosystems. These findings shed light on the functioning of low coral cover systems, which are expected to expand worldwide under global change.}, doi = {10.1038/s41598-021-00348-w}, url = {https://www.nature.com/articles/s41598-021-00348-w}, author = {Fey, Pauline and Parravicini, Valeriano and B{\u a}naru, Daniela and Dierking, Jan and Galzin, Ren{\'e} and Lebreton, Beno{\^\i}t and Tarik Meziane and Polunin, Nicholas V. C. and Zubia, Mayalen and Letourneur, Yves} } @article {7181, title = {Mytilus edulis and Styela clava assimilate picophytoplankton carbon through feces and pseudofeces ingestion}, journal = {Aquaculture}, volume = {531}, year = {2021}, month = {Jan-01-2021}, pages = {735868}, abstract = {Picophytoplankton (PPP) may contribute to the bulk of primary production in nutrient-rich marine ecosystems. In this study, we quantified the capacity of blue mussels (Mytilus edulis) and clubbed tunicates (Styela clava) to exploit PPP. In the water, we introduced PPP cells that were isotopically labelled with\ 13C and using the same enrichment approach, we measured the secondary transfer (recycling) of carbon via the assimilation of pseudofeces and feces. Results show that both\ M. edulis\ and\ S. clava\ assimilate PPP carbon by ingesting PPP cells directly from water. In addition, PPP assimilation rates were similar in both species. Most interesting was our observation that both species assimilated PPP carbon contained in pseudofeces and feces, including large fecal pellets produced by\ S. clava.\ We conclude that within cultured and invasive filter feeders, PPP carbon is recycled via ingestion of feces and pseudofeces among individuals growing in close proximity. In aquaculture settings, cultured bivalves and fouling tunicates may provide an ecological service by removing excess PPP in nutrient-rich systems via direct and secondary ingestion.
Keywords: Picophytoplankton, Isotopic labelling, Aquaculture, Feces, Carbon cycling, Blue mussel, Tunicate
\ }, issn = {00448486}, doi = {10.1016/j.aquaculture.2020.735868}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0044848620305779}, author = {Sonier, R. and Comeau, L.A. and Tremblay, R. and Fr{\'e}d{\'e}ric Olivier and Tarik Meziane and Genard, B.} } @article {7778, title = {Prokaryotic abundance, cell size and extracellular enzymatic activity in a human impacted and mangrove dominated tropical estuary (Can Gio, vietnam)}, journal = {Estuarine, Coastal and Shelf Science}, year = {2021}, month = {Jan-02-2021}, pages = {107253}, abstract = {Extracellular enzymatic activities constitute the first and limiting step of the whole process of organic matter (OM) cycling in aquatic ecosystems. This study aims to identify the factors controlling prokaryotes ability to hydrolyse OM in an Indo-Pacific tropical mangrove ecosystem (Can Gio, Vietnam). Prokaryotic abundance and leucine-aminopeptidase exo-proteolytic activity (EPA) were measured at vertical (from the sea-surface microlayer to bottom waters), spatial (along a transect within the estuary) and seasonal (wet and dry season) scales. Prokaryotic abundance ranged from 1.2 to 5.7\ {\texttimes}\ 109\ cells L-1\ and EPA ranged from 24 to 505\ nmol\ L-1\ h-1\ that was relatively similar to other highly productive ecosystems. The estuary was poorly stratified, most probably because of high water turbulence. Yet, exo-proteolytic activity was significantly higher in bottom waters, where higher loads of suspended particulate matter were measured. Seasonal and spatial differences in EPA suggest that the nature of OM transported by the Can Gio mangrove estuary affect EPA. The latter seems to be increased by two {\textquotedblleft}uncommon{\textquotedblright} situations: the input of fresh and labile OM (e.g.\ shrimp farm effluents) or the lack of labile OM and the need to hydrolyse refractory compounds (e.g.\ during the dry season).}, issn = {02727714}, doi = {10.1016/j.ecss.2021.107253}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0272771421000895}, author = {Frank David and Tarik Meziane and Marchand, Cyril and Rolland, Guillaume and Pham, Aur{\'e}lie and Thanh-Nho, Nguyen and Lamy, Dominique} } @article {7593, title = {Sources, quality and transfers of organic matter in a highly-stratified sub-Arctic coastal system (Saint-Pierre-et-Miquelon, NW Atlantic)}, journal = {Progress in Oceanography}, year = {2021}, month = {Jan-11-2021}, pages = {102483}, abstract = {In response to ongoing global climate change, marine ecosystems in the northwest Atlantic are experiencing one of the most drastic increases in sea surface temperatures in the world. This warming can increase water column stratification and decrease surface nutrient concentrations, in turn impacting primary productivity and phytoplankton assemblages. However, the exact impacts of these changes on sources and quality of organic matter as well as its transfers to the benthic compartment remain uncertain. This survey characterized organic matter sources and quality within a highly-stratified sub-Arctic coastal system (Saint-Pierre and Miquelon) and described its transfer towards a biomass-dominant primary consumer, the sand dollar\ Echinarachnius parma. This study analyzed fatty acid and stable isotope (δ13C and δ15N) composition of surface and bottom Particulate Organic Matter (s-POM and b-POM, respectively), Sedimentary Organic Matter (SOM) and sand dollar tissue along a near shore to offshore gradient during two contrasting seasons associated either with sharp or weak water column stratification (i.e. High\ vs\ Low Stratification Periods). Results revealed high relative abundances of polyunsaturated fatty acids (notably macro- and microalgae markers) in POM during the Low Stratification Period while the High Stratification Period was characterized by elevated relative abundance of saturated fatty acids indicating a higher organic matter degradation state. In addition, strong seasonal differences were also observed in food availability with four-fold higher concentrations in total suspended solids during Low\ vs\ High Stratification Periods. These results suggested thus multiple negative effects of stratification on pelagic-benthic coupling and POM quality. Lower nutrient repletion of surface waters during period of sharp stratification diminishes pelagic-benthic coupling by reducing food availability, POM quality and vertical transfer of organic matter. By contrast, the sediment-based diet of\ E. parma\ showed a low spatiotemporal variability reflecting the homogenous composition of the SOM. This study suggests that intensified water column stratification due to increasing sea surface temperatures may modify the pelagic-benthic coupling and future quality and composition of POM pools.}, issn = {00796611}, doi = {10.1016/j.pocean.2020.102483}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0079661120302184}, author = {Bridier, Guillaume and Tarik Meziane and Grall, Jacques and Chauvaud, Laurent and Donnet, S{\'e}bastien and Lazure, Pascal and Fr{\'e}d{\'e}ric Olivier} } @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 {7122, title = {Laminariales Host Does Impact Lipid Temperature Trajectories of the Fungal Endophyte Paradendryphiella salina (Sutherland.)}, journal = {Marine Drugs}, volume = {18}, year = {2020}, pages = {379}, abstract = {Kelps are colonized by a wide range of microbial symbionts. Among them, endophytic fungi remain poorly studied, but recent studies evidenced yet their high diversity and their central role in algal defense against various pathogens. Thus, studying the metabolic expressions of kelp endophytes under different conditions is important to have a better understanding of their impacts on host performance. In this context, fatty acid composition is essential to a given algae fitness and of interest to food web studies either to measure its nutritional quality or to infer about its contribution to consumers diets. In the present study,\ Paradendryphiella salina, a fungal endophyte was isolated from\ Saccharina latissima\ (L.) and\ Laminaria digitata\ (Hudson.) and its fatty acid composition was assessed at increasing salinity and temperature conditions. Results showed that fungal composition in terms of fatty acids displayed algal-dependent trajectories in response to temperature increase. This highlights that C18 unsaturated fatty acids are key components in the host-dependant acclimation of\ P. salina\ to salinity and temperature changes}, keywords = {fatty acids, fungal endophytes, laminariales, Paradendryphiella salina}, doi = {10.3390/md18080379}, url = {https://www.mdpi.com/1660-3397/18/8/379}, author = {Vallet, Marine and Tarik Meziane and Najet Thiney and Prado, Soizic and C{\'e}dric Hubas} } @article {7545, title = {Public Perceptions of Mangrove Forests Matter for Their Conservation}, journal = {Frontiers in Marine Science}, volume = {7}, year = {2020}, month = {Jul-11-2021}, abstract = {Iconic species and landscapes attract public attention to help reverse the degradation of ecosystems and their biodiversity (Thompson and Rog, 2019); sharing their images on social media can act as a powerful way to influence perceptions and drive positive actions by the public (Wu et al., 2018). Social media platforms such as Twitter, Facebook and Instagram have been used to great effect to communicate the urgency required to halt and reverse tropical forest loss (Lamb et al., 2005) and the plight of coral reefs (Curnock et al., 2019). Ecosystems such as seagrass meadows, mudflats, and mangrove forests receive substantially less media exposure (Duarte et al., 2008). Yet these under-recognized ecosystems are hugely important for local and global societies, providing benefits such as shoreline protection (Barbier, 2016), fisheries (Carrasquilla-Henao and Juanes, 2017), carbon capture and storage (Duarte et al., 2013), alongside supporting rich marine and terrestrial biodiversity (Sievers et al., 2019;\ Thompson and Rog, 2019) (Figure 1). Apart from these important ecosystem functions, goods and services, mangrove forests are home to a huge diversity of organisms with ecologically and evolutionarily unique adaptations to life in the intertidal zone, including vivipary and salt tolerance in trees, air-breathing in crabs and amphibious behavior in fish (mudskippers); this makes mangrove forests a dynamic and fascinating evolutionary laboratory.}, doi = {10.3389/fmars.2020.60365110.3389/fmars.2020.603651.s001}, url = {https://www.frontiersin.org/articles/10.3389/fmars.2020.603651/full}, author = {Dahdouh-Guebas, Farid and Ajonina, Gordon N. and Amir, A. Aldrie and Andradi-Brown, Dominic A. and Aziz, Irfan and Balke, Thorsten and Barbier, Edward B. and Cannicci, Stefano and Cragg, Simon M. and Cunha-Lignon, Mar{\'\i}lia and Curnick, David J. and Duarte, Carlos M. and Duke, Norman C. and Endsor, Charlie and Fratini, Sara and Feller, Ilka C. and Fromard, Fran{\c c}ois and Hug{\'e}, Jean and Huxham, Mark and Kairo, James G. and Kajita, Tadashi and Kathiresan, Kandasamy and Koedam, Nico and Lee, Shing Yip and Lin, Hsing-Juh and Mackenzie, Jock R. and Mangora, Mwita M. and Marchand, Cyril and Tarik Meziane and Minchinton, Todd E. and Pettorelli, Nathalie and Polan{\'\i}a, Jaime and Polgar, Gianluca and Poti, Meenakshi and Primavera, Jurgenne and Quarto, Alfredo and Rog, Stefanie M. and Satyanarayana, Behara and Schaeffer-Novelli, Yara and Spalding, Mark and Van der Stocken, Tom and Wodehouse, Dominic and Yong, Jean W. H. and Zimmer, Martin and Friess, Daniel A.} } @article {6865, title = {Relationship between bacterial compartment and particulate organic matter (POM) in coastal systems: An assessment using fatty acids and stable isotopes}, journal = {Estuarine, Coastal and Shelf Science}, volume = {239}, year = {2020}, month = {Jan-07-2020}, pages = {106720}, issn = {02727714}, doi = {10.1016/j.ecss.2020.106720}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0272771419301593}, author = {Li{\'e}nart, Camilla and Savoye, Nicolas and Conan, Pascal and David, Val{\'e}rie and Barbier, Pierrick and Bichon, Sabrina and Charlier, Karine and Costes, Laurence and Derriennic, Herv{\'e} and Ferreira, Sophie and Gueux, Aurore and C{\'e}dric Hubas and Maria, Eric and Tarik Meziane} } @article {7187, title = {Shells of the bivalve Astarte moerchi give new evidence of a strong pelagic-benthic coupling shift occurring since the late 1970s in the North Water polynya}, journal = {Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences}, volume = {378}, year = {2020}, month = {Feb-10-2020}, pages = {20190353}, abstract = {Climate changes in the Arctic may weaken the currently tight pelagic-benthic coupling. In response to decreasing sea ice cover, arctic marine systems are expected to shift from a {\textquoteleft}sea-ice algae{\textendash}benthos{\textquoteright} to a {\textquoteleft}phytoplankton-zooplankton{\textquoteright} dominance. We used mollusc shells as bioarchives and fatty acid trophic markers to estimate the effects of the reduction of sea ice cover on the food exported to the seafloor. Bathyal bivalve\ Astarte moerchi\ living at 600 m depth in northern Baffin Bay reveals a clear shift in growth variations and Ba/Ca ratios since the late 1970s, which we relate to a change in food availability. Tissue fatty acid compositions show that this species feeds mainly on microalgae exported from the euphotic zone to the seabed. We, therefore, suggest that changes in pelagic-benthic coupling are likely due either to local changes in sea ice dynamics, mediated through bottom-up regulation exerted by sea ice on phytoplankton production, or to a mismatch between phytoplankton bloom and zooplankton grazing due to phenological change. Both possibilities allow a more regular and increased transfer of food to the seabed.

This article is part of the theme issue {\textquoteleft}The changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystem functioning{\textquoteright}.}, issn = {1364-503X}, doi = {10.1098/rsta.2019.0353}, url = {https://royalsocietypublishing.org/doi/10.1098/rsta.2019.0353}, author = {Fr{\'e}d{\'e}ric Olivier and Gaillard, Blandine and Thebault, Julien and Tarik Meziane and Tremblay, Rejean and Dumont, Dany and B{\'e}langer, Simon and Gosselin, Michel and Jolivet, Aur{\'e}lie and Chauvaud, Laurent and Martel, Andr{\'e} L. and Rysgaard, S{\o}ren and Olivier, Anne-H{\'e}l{\`e}ne and Pettr{\'e}, Julien and Mars, J{\'e}r{\^o}me and Gerber, Silvain and Archambault, Philippe} } @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 {5830, title = {Coastal waters freshening and extreme seasonality affect organic matter sources, quality, and transfers in a High Arctic fjord (Young Sound, Greenland)}, journal = {Marine Ecology Progress Series}, volume = {610}, year = {2019}, pages = {15-31}, abstract = {

Arctic benthic ecosystems are expected to experience strong modifications in the dynamics of primary producers and/or benthic-pelagic coupling under climate change. However, lack of knowledge about the influence of physical constraints (e.g. ice-melting associated gradients) on organic matter sources, quality, and transfers in systems such as fjords can impede predictions of the evolution of benthic-pelagic coupling in response to global warming. Here, sources and quality of particulate organic matter (POM) and sedimentary organic matter (SOM) were characterized along an inner-outer gradient in a High Artic fjord (Young Sound, NE Greenland) exposed to extreme seasonal and physical constraints (ice-melting associated gradients). The influence of the seasonal variability of food sources on 2 dominant filter-feeding bivalves (Astarte moerchi and Mya truncata) was also investigated. Results revealed the critical impact of long sea ice/snow cover conditions prevailing in Young Sound corresponding to a period of extremely poor and degraded POM and SOM. Freshwater inputs had a very local impact during summer, with relatively more degraded POM at the surface compared to bottom waters that were less nutritionally depleted but more heterogeneous among the sampled stations. Terrestrial inputs contributed to the SOM composition but showed a large variability along the fjord. Finally, diet analyses underlined the contrasted nutritional conditions, showing much higher lipid reserves in A. moerchi than in M. truncata during winter. Under a scenario with increased freshwater input, such results suggest a decline in organic matter quality and production in Young Sound, with subsequent impacts on benthic food webs.

}, doi = {10.3354/meps12857}, url = {https://www.int-res.com/abstracts/meps/v610/p15-31/}, author = {Bridier, Guillaume and Tarik Meziane and Grall, Jacques and Laurent Chauvaud and Sejr, Mikael K. and Menneteau, Sylvain and Fr{\'e}d{\'e}ric Olivier} } @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 {5984, title = {Short-term changes in the quality of suspended particulate matter in a human impacted and mangrove dominated tropical estuary (Can Gio, Vietnam)}, journal = {Continental Shelf Research }, volume = {178}, year = {2019}, month = {01/05/2019}, pages = {59-67}, abstract = {

Suspended particulate matter (SPM) is a key component of coastal food webs and a key variable of nutrient budgets. Understanding its variability across short time scales in estuaries may help ecologists understand seasonal and diurnal migration of estuarine organisms, and answer how their nutritional requirements are fulfilled. It may also inform biogeochemists regarding the factors that influence import and export of nutrients between terrestrial and coastal ecosystems. This study aimed to link the dynamics of fatty acids, stable isotopes (δ13C and δ15N) and C/N ratios of SPM, revealing organic matter quality, to rapidly varying factors (SPM concentration, salinity and presence of daylight) and comparing this variability to the seasonal variation induced by the alternation of dry and wet seasons in the studied region. Our results revealed that these rapidly varying factors had a strong influence on the bacterial and the phytoplanktonic compartments of SPM. They suggest that tidally resuspended particles are the site of intense heterotrophic activity and that estuarine phytoplankton store lipids during the daytime up to substantially modifying SPM quality. Our study also shows higher freshness of SPM during the wet season. We expect this study to raise the interest of both biologists and biogeochemists to introduce daily variability of SPM in food webs and nutrient budgets modelling.

}, doi = {10.1016/j.csr.2019.03.011}, author = {Frank David and Cyril Marchand and Najet Thiney and Tran-thi, N and Tarik Meziane} } @article {5769, title = {Trophic relationships and basal resource utilisation in the Can Gio Mangrove Biosphere Reserve (Southern Vietnam)}, journal = {Journal of Sea Research}, year = {2019}, abstract = {

Abstract Fatty acid biomarkers and dual stable isotopes (δ13C and δ15N) were used to identify the preferred food sources of consumers in a mangrove tidal creek and nearby unforested (mud bank) and forested areas located in the Can Gio Mangrove Biosphere Reserve (Southern Vietnam). We analysed 15 macro-invertebrates and 1 fish species representing primary consumers and their immediate predators in this area. Specific groups of fatty acids were used to trace the fate of various food sources (i.e., suspended particulate organic matter, mangrove litter and sedimentary organic matter). The δ13C and δ15N of consumers ranged from -26.9 to -18.8{\textperthousand} and from 1.1 to 9.9{\textperthousand}, respectively. The trophic pathway based on mangrove litter, characteristic of mangrove ecosystems, is nutritionally sustaining various crab and snail species. In contrast, it appears that the most mobile species (fish and shrimps), living in the water column and possibly migrating with tides, are mostly feeding on suspended particulate organic matter, suggesting that this trophic pathway is of great importance for connectivity among tropical coastal ecosystems. Our study suggests that snails and crabs mainly act as mineralisers, processing high quantities of detrital material to meet their nutritional needs and thus releasing nutrients through the production of faeces, that are further mineralised by microorganisms, while locally grown phytoplankton reintegrates these compounds into its biomass and feeds migrating species. We highlight here a possible link between mangrove litter and coastal food webs.

}, doi = {10.1016/j.seares.2018.12.006}, url = {https://www.sciencedirect.com/science/article/pii/S1385110118301679}, author = {Frank David and Cyril Marchand and Nguyen, Thanh-Nho and Pierre Taillardat and Tarik Meziane} } @article {5465, title = {Carbon biogeochemistry and CO2 emissions in a human impacted and mangrove dominated tropical estuary (Can Gio, Vietnam)}, journal = {Biogeochemistry}, year = {2018}, month = {27/04/2018}, pages = {1-15}, abstract = {

The quantitative contribution of tropical estuaries to the atmospheric CO2\ budget has large uncertainties, both spatially and seasonally. We investigated the seasonal and spatial variations of carbon biogeochemistry downstream of Ho Chi Minh City (Southern Vietnam). We sampled four sites distributed from downstream of a highly urbanised watershed through mangroves to the South China Sea coast during the dry and wet seasons. Measured partial pressure of CO2(pCO2) ranged from 660 to 3000\ μatm during the dry season, and from 740 to 5000\ μatm during the wet season. High organic load, dissolved oxygen saturation down to 17\%, and pCO2up to 5000\ μatm at the freshwater endmember of the estuary reflected the intense human pressure on this ecosystem. We show that releases from mangrove soils affect the water column pCO2\ in this large tropical estuary (~600\ m wide and 10{\textendash}20\ m deep). This study is among the few to report direct measurements of both water pCO2\ and CO2\ emissions in a Southeast Asian tropical estuary located in a highly urbanised watershed. It shows that the contribution of such estuaries may have been previously underestimated, with CO2\ emissions ranging from 74 to 876\ mmol\ m-2\ day-1\ at low current velocity (\<\ 0.2\ m\ s-1). Corresponding gas transfer velocities k600,\ ranging from 1.7 to 11.0\ m\ day-1,\ were about 2 to 4 times of k600\ estimated using published literature equations.

}, doi = {https://doi.org/10.1007/s10533-018-0444-z}, author = {Frank David and Tarik Meziane and Tran-thi, N and Truong Van, V and Th{\`a}nh-Nho, N and Pierre Taillardat and Cyril Marchand} } @article {5315, title = {Cultured eastern oysters (Crassostrea virginica): retention and assimilation of picophytoplankton using a multi-biomarker approach}, journal = {Aquatic Living Resources}, volume = {30}, year = {2018}, month = {08/2018}, type = {Article}, abstract = {

{In this study, we investigated the food sources of eastern oysters Crassostrea virginica cultivated in Atlantic Canada. Stable isotopes (C-13 and N-15) and fatty acid biomarkers were used to identify these sources under in situ conditions for suspended (similar to 0.5 m below surface) and bottom(similar to 2 m) culture stocks. It was found that particulate organic matter represented the main food source, with major contributions from live phytoplankton. Higher lipid contents were detected in the digestive glands of suspended oysters compared to bottom oysters (p \< 0.05). Bottom oysters did not show significant preference for detrital or bacterial organic matter. Near-surface waters contained an elevated picophytoplankton biomass (PPP, 0.2-2 mu m, 1.93 +/- 0.16mg l(-1), mean +/- SEM) compared to nanophytoplankton biomass (NPP, \> 2 mu m, 1.05 +/- 0.15 mu g l(-1), mean +/- SEM). To determine whether the small size PPP was captured and assimilated by C. virginica, feeding trials were conducted in the laboratory using three PPP/NPP diets (20\%, 50\%, and 80\% PPP), consisting of isotopically-labelled (delta C-13) PPP cells (Nannochloropsis oculata) and non-labelled NPP cells (Tisochrysis lutea). An isotopically-labelled fatty acids analysis indicated PPP assimilation in various tissues (digestive gland, gills, mantle, and abductor muscle), including from oysters fed the reduced (20\%) PPP diet. Isotopic enrichment (C-13) in the FA 22:2 (non-methylene-interrupted or NMI) showed that precursors of NMIs utilized PPP carbon in its biosynthesis process. In conclusion, C. virginica assimilated primarily particulate organic matter (POM), including PPP, which dominated the phytoplankton community in near surface waters. C. virginica can exploit PPP carbon during fatty acid production and further biosynthesis.}

}, keywords = {Aquaculture, fatty acids, Picophytoplankton, Shellfish}, Stable isotopes, {Crassostrea virginica}, issn = {{0990-7440}}, doi = {{10.1051/alr/2017031}}, author = {R{\'e}mi Sonier and R{\'e}jean Tremblay and Fr{\'e}d{\'e}ric Olivier and Tarik Meziane and Comeau, Luc Andre} } @article {5310, title = {Nutritional composition of suspended particulate matter in a tropical mangrove creek during a tidal cycle (Can Gio, Vietnam)}, journal = {Estuarine, Coastal and Shelf Science}, volume = {200}, year = {2018}, pages = {126-130}, doi = {10.1016/j.ecss.2017.10.017}, url = {https://doi.org/10.1016/j.ecss.2017.10.017}, author = {Frank David and Cyril Marchand and Pierre Taillardat and Th{\`a}nh-Nho, N and Tarik Meziane} } @article {8982, title = {Trophic cues promote secondary migrations of bivalve recruits in a highly dynamic temperate intertidal system}, journal = {Ecosphere}, volume = {9}, year = {2018}, month = {Apr-12-2018}, pages = {e02510}, issn = {2150-8925}, doi = {10.1002/ecs2.2018.9.issue-1210.1002/ecs2.2510}, url = {https://onlinelibrary.wiley.com/toc/21508925/9/12}, author = {Foret, Martin and Barbier, Pierrick and Tremblay, Rejean and Tarik Meziane and Neumeier, Urs and Duvieilbourg, Eric and Olivier, Fr{\'e}d{\'e}ric} } @article {5210, title = {Cultured eastern oysters (Crassostrea virginica): retention and assimilation of picophytoplankton using a multi-biomarker approach}, journal = {Aquatic Living Ressources}, volume = {30}, year = {2017}, month = {08/2017}, pages = {1-13}, doi = {doi.org/10.1051/alr/2017031}, url = {https://www.alr-journal.org/articles/alr/abs/2017/01/alr170056/alr170056.html}, author = {R{\'e}mi Sonier and R{\'e}jean Tremblay and Fr{\'e}d{\'e}ric Olivier and Tarik Meziane and Comeau, L. A.} } @article {4801, title = {Dietary plasticity in the bivalve Astarte moerchi revealed by a multimarker study in two Arctic fjords}, journal = {Marine Ecology Progress Series}, volume = {567}, year = {2017}, pages = {157-172}, abstract = {

ABSTRACT: Arctic coastal ecosystems are likely to be strongly affected by predicted environmental changes such as sea-ice decline and increase in freshwater input and turbidity. These changes are expected to impact primary production dynamics and consequently benthic consumers. The trophic relationship between primary producers and benthic primary consumers were compared in 2 Arctic fjords with different seasonal ice-cover: Young Sound (NE Greenland, a high-Arctic fjord) and Kongsfjorden (Svalbard Archipelago, a sub-Arctic fjord). For comparison, we selected the filter-feeding bivalve Astarte moerchi (belonging to the complex A. borealis), which has a broad geographical distribution in the Arctic. The bivalve digestive glands and food sources were characterized with fatty acids (FAs), bulk stable isotopes, and compound-specific stable isotopes of individual FAs. Our results suggest that diatoms of pelagic and/or benthic origin are the main contributors to the A. moerchi diet in Young Sound and make up a less important fraction of the diet in the Kongsfjorden population. A contribution by sympagic diatoms is clearly excluded in the sub-Arctic fjord and needs to be further assessed in the Arctic fjord. The A. moerchi diet in sub-Arctic Kongsfjorden is more diversified, varies with season, and has contributions from dinoflagellates and macroalgal detritus. These results, together with higher concentrations of total FAs in the Young Sound population, demonstrated and characterized the trophic plasticity of this bivalve species. Based on these results, we discuss potential effects of environmental factors (shifts in trophic resources, increase in turbidity) for A. moerchi populations in changing Arctic ecosystems.

}, author = {De Cesare, S and Tarik Meziane and Laurent Chauvaud and Richard, J and Sejr, M K and Th{\'e}bault, J and Winkler, G and Fr{\'e}d{\'e}ric Olivier} } @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 {5026, title = {The impact of suspended oyster farming on nitrogen cycling and nitrous oxide production in a sub-tropical Australian estuary}, journal = {Estuarine, Coastal and Shelf Science}, volume = {192}, year = {2017}, pages = {117 - 127}, abstract = {

In this study we quantified nitrate (NO3-) reduction (denitrification, anammox and DNRA) and N2O production in sediments and epibiont communities associated with Sydney Rock Oyster (Saccostrea glomerata) farming. In sediments beneath an active suspended oyster farm, DNRA accounted for 98\% of NO3- reduction with rates of up to 169\ {\textpm}\ 45\ μmol\ N m-2 h-1. Much of this DNRA was fuelled by NO3- derived from nitrification. Reference sediments had significantly lower DNRA rates of 83.8\ {\textpm}\ 28.2\ μmol\ N m-2 h-1, however this constituted 96\% of the sites total NO3- reduction. Fatty acid analysis showed that sediment organic matter was more labile in the oyster impacted sediments, facilitating subtle shifts in sediment oxygen demand which increased the Fe2+ availability with respect to the reference sediments. The difference in DNRA rate between the sites was attributed to autotrophic oxidation of soluble Fe2+ in sediments underlying the oyster cultures. DNRA was absent in the oyster shell epibiont communities and rates of anammox and denitrification were lower than in the sediments. Production of NH4+ from the oysters and their associated epibionts was larger than DNRA and reached a rate of 206.2\ μmol\ N m-2 h-1. Nitrous oxide production rates were generally low compared to other aquaculture systems and the net flux of N2O for the combined oyster cultivation system (i.e. sediments plus epibionts) was negative, i.e. there was N2O consumption in the sediments beneath the oysters. Overall, subtropical suspended oyster farming systems favour inorganic N retention over N loss.

}, keywords = {Dissimilatory nitrate reduction to ammonium}, issn = {0272-7714}, doi = {http://dx.doi.org/10.1016/j.ecss.2017.05.007}, url = {http://www.sciencedirect.com/science/article/pii/S0272771417301592}, author = {Dirk V. Erler and David T. Welsh and William W. Bennet and Tarik Meziane and C{\'e}dric Hubas and Daniele Nizzoli and Angus J.P. Ferguson} } @article {4724, title = {Multi-approach analysis to assess diet of harbour porpoises Phocoena phocoena in the southern North Sea}, journal = {Marine Ecology and Progress Series}, volume = {563}, year = {2017}, month = {01/2017}, pages = {249-259}, abstract = {

Over the past decade, the distribution of harbour porpoises Phocoena phocoena has undergone a southward shift in the North Sea, which has led to an increase in the number of stranded porpoises in its southern part. Since the changes in distribution and relative abundance of porpoises may be linked to the changes in prey availability, the aim of the present work was to investigate whether any changes in the feeding habits of harbour porpoises along the North Sea occurred in the past decade. The diet of harbour porpoises stranded along the southern North Sea (northern France and Belgian coast) was assessed through 3 complementary methods: stomach content analysis, stable isotopes (carbon and nitrogen) analysis determined from muscle samples, and fatty acids analysis determined from blubber samples. Fatty acid patterns and stable isotope values from 52 porpoises were compared to 14 potential prey species collected from the southern North Sea. Our results showed that the diet of porpoises along the southern North Sea comprises fish species that are among the most abundant and widely distributed in the area, except for the sardine Sardina pilchardus that appeared to be a new potential prey. Moreover, our results suggested that the decline in sandeel (Ammodytidae) in the northern parts of the North Sea along with the re-invasion of the southern North Sea by sardine species might affect the distribution of harbour porpoises.

}, author = {Mahfouz, C and Tarik Meziane and Henry, F and Abi-Ghanem, C and Spitz, J and Jauniaux, T and Bouveroux, T and Khalef, G} } @article {4725, title = {Nursery function of coastal temperate benthic habitats: New insight from the bivalve recruitment perspective}, journal = {Journal of Sea Research}, volume = {121}, year = {2017}, pages = {11-23}, abstract = {


Marine habitat function has been typically investigated in terms of biogeochemical regulation but rarely in terms of population renewal, which is mainly controlled by recruitment dynamics. The recruitment phase is crucial for
organisms with a bentho-pelagic life cycle, such as bivalves, and it regulates the population renewal success. This study provides new insight on the role of temperate benthic habitats on bivalve recruitment, as a function of
nursery areas. Six dominant benthic habitats of the Chausey archipelago (Normandy, France) were studied. In each habitat, bivalve recruit assemblages were described at the end of two reproductive seasons. Furthermore, Ostrea edulis
juveniles were immerged on each habitat during two months to compare growth performances and feeding status, estimated by fatty acid composition. Recruit assemblages differ from each habitat according to sediment grain-size composition and bathymetrical levels. Subtidal habitats, and especially Crepidula fornicata banks and Glycymeris glycymeris coarse sands, supported the highest species abundance and richness of recruits. All O. edulis juveniles fed on the same trophic resources but digestive glands of juveniles from C. fornicata banks were more concentrated in total fatty acids than those from subtidal G. glycymeris coarse sands and maerl banks. Our results depict the key role of subtidal and structured habitats, composed of ecosystem engineers, in enhancing bivalve recruitment and extending the bivalve population renewal. This study suggests that the crucial role of
these habitats as bivalve nurseries must be integrated in management perspectives

}, author = {Pierrick Barbier and Tarik Meziane and For{\^e}t, M and R{\'e}jean Tremblay and Robert, R 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 {4226, title = {Geographic variation in stable isotopic and fatty acid composition of anguilliform leptocephali and particulate organic matter in the South Pacific}, journal = {Marine Ecology and Progress Series}, volume = {544}, year = {2016}, pages = {225-241}, abstract = {

The feeding ecology of leptocephali has remained poorly understood because they apparently feed on particulate organic matter (POM), which varies in composition, and it is unclear which components of the POM they assimilate. The δ13C and δ15N stable isotope (SI) and fatty acid (FA) compositions of 3 families of leptocephali and POM were compared in 3 latitudinal current zones of the western South Pacific. The δ15N signatures of leptocephali and POM overlapped, with both having their lowest values in the southern current zone. POM in general (across all zones) contained 38 FAs and was rich in saturated FAs (SFA) (16:0, 18:0, 14:0), while leptocephali contained 50 FAs, with high proportions of 16:0, and higher contributions of 22:6ω3, 20:5ω3, 18:1ω9, 16:1ω7 and other FAs than found in the POM. Serrivomeridae leptocephali in the north had higher δ15N signatures and were also distinguished from Nemichthyidae and Muraenidae larvae by their FA compositions (higher SFAs, lower 22:6ω3 and 20:5ω3). Although SI signatures of the Serrivomeridae larvae did not clearly vary with size, 16:0 and 18:0 FA proportions decreased with increasing larval size, and 22:6ω3 and 16:1ω7 increased in larger larvae. Correspondences between the latitudinal variations in nitrogen SI signatures and FA compositions of POM with those of leptocephali and the presence of FA markers of both autotrophic and heterotrophic organisms were consistent with leptocephali feeding on POM. POM can contain various materials from primary producers and heterotrophic microorganisms, but differences in the SI signatures and FA compositions in leptocephali remain to be explained through further research.

}, keywords = {Leptocephali {\textperiodcentered} Fatty acids {\textperiodcentered} Stable isotopes {\textperiodcentered} Biomarkers {\textperiodcentered} Trophic ecology {\textperiodcentered} Oceanic currents}, isbn = {doi:10.3354/meps11575 }, author = {Li{\'e}nart, Camilla and Eric Feunteun and Miller, M J and Aoyama, J and Jean-Michel Mortillaro and C{\'e}dric Hubas and Kuroki, M and Watanabe, S and Christine Dupuy and Alexandre Carpentier and Otake, T and Tsukamoto, K and Tarik Meziane} } @article {4269, title = {Influence of intertidal recreational fisheries and {\textquoteleft}bouchot{\textquoteright} mussel culture on bivalve recruitment}, journal = {Marine Environmental Research}, volume = {117}, year = {2016}, pages = {1 - 12}, abstract = {

Abstract In coastal environments, fishing and aquaculture may be important sources of disturbance to ecosystem functioning, the quantification of which must be assessed to make them more sustainable. In the Chausey Archipelago, France, recreational fishing and commercial shellfish farming are the only two evident anthropogenic activities, dominated by bivalve hand-raking and {\textquoteleft}bouchot{\textquoteright} mussel culture, respectively. This study evaluates the impact of both activities on bivalve recruitment dynamics by comparing primary recruitment intensity (short-term effect) and recruitment efficiency (medium-term effect) by sampling bivalves in reference (undisturbed) and disturbed (i.e. subjected to hand-raking or in {\textquoteleft}bouchot{\textquoteright} mussel culture areas) parcels throughout and at the end of the recruitment season, respectively. Specific hypotheses evaluated were that (H1) bivalve hand-raking negatively affects bivalve recruitment and that (H2) {\textquoteleft}bouchot{\textquoteright} mussel culture promotes bivalve recruitment. Patterns in bivalve community structure in reference parcels (i.e. natural pattern) differed between initial and final recruitment, underlining the great importance of early post-settlement processes, particularly secondary dispersal. Primary recruitment intensity was inhibited in hand-raking parcels whereas it was promoted in {\textquoteleft}bouchot{\textquoteright} mussel culture parcels, but the effect on recruitment efficiency was muted for both activities due to post-settlement processes. Nevertheless, the importance of effects that occur during the first step of recruitment should not be ignored as they may affect bivalve communities and induce immediate consequences on the trophic web through a cascade effect. Finally, it is highlighted that hand-raking damages all life stages of the common cockle Cerastoderma edule, one of the major target species, suggesting that this activity should be managed with greater caution than is currently done.

}, keywords = {{\textquoteleft}Bouchot{\textquoteright}}, issn = {0141-1136}, doi = {http://dx.doi.org/10.1016/j.marenvres.2016.03.006}, url = {http://www.sciencedirect.com/science/article/pii/S0141113616300319}, author = {Nicolas Toupoint and Pierrick Barbier and R{\'e}jean Tremblay and P Archambault and Christopher W. McKindsey and Gesche Winkler and Tarik Meziane and Fr{\'e}d{\'e}ric Olivier} } @article {4396, title = {Meiofauna distribution in a mangrove forest exposed to shrimp farm effluents (New Caledonia)}, journal = {Marine Environmental Research}, volume = {119}, year = {2016}, pages = {100 - 113}, abstract = {

Abstract Meiofauna abundance, biomass and individual size were studied in mangrove sediments subjected to shrimp farm effluents in New Caledonia. Two strategies were developed: i) meiofauna examination during the active (AP) and the non-active (NAP) periods of the farm in five mangrove stands characteristics of the mangrove zonation along this coastline, ii) meiofauna examination every two months during one year in the stand the closest to the pond (i.e. Avicennia marina). Thirteen taxonomic groups of meiofauna were identified, with nematodes and copepods being the most abundant ones. Meiofauna abundance and biomass increased from the land side to the sea side of the mangrove probably as a result of the increased length of tidal immersion. Abundance of total meiofauna was not significantly different before and after the rearing period. However, the effluent-receiving mangrove presented twice the meiofauna abundance and biomass than the control one. Among rare taxa, mites appeared extremely sensitive to this perturbation.

}, keywords = {New Caledonia}, issn = {0141-1136}, doi = {http://dx.doi.org/10.1016/j.marenvres.2016.05.028}, url = {http://www.sciencedirect.com/science/article/pii/S0141113616300976}, author = {L. Della Patrona and Cyril Marchand and C{\'e}dric Hubas and Nathalie Molnar and J. Deborde and Tarik Meziane} } @article {4261, title = {Picophytoplankton contribution to Mytilus edulis growth in an intensive culture environment}, journal = {Marine Biology}, volume = {163}, year = {2016}, pages = {1{\textendash}15}, issn = {1432-1793}, doi = {10.1007/s00227-016-2845-7}, url = {http://dx.doi.org/10.1007/s00227-016-2845-7}, author = {R{\'e}mi Sonier and Filgueira, R. and Guyondet, T. and R{\'e}jean Tremblay and Fr{\'e}d{\'e}ric Olivier and Tarik Meziane and Starr, M. and LeBlanc, A. R. and Comeau, L. A.} } @article {4176, title = {Spatial and seasonal contrasts of sedimentary organic matter in floodplain lakes of the central Amazon basin}, journal = {Biogeosciences}, volume = {13}, year = {2016}, type = {original}, abstract = {


In this study, we investigated the seasonal and spatial pattern of sedimentary organic matter (SOM) in five floodplain lakes of the central Amazon basin (Cabaliana, Janauaca, Cana{\c c}ari, Mirituba and Curuai) which have different morphologies, hydrodynamics and vegetation coverages. Surface sediments were collected in four hydrological seasons: low water (LW), rising water (RW), high water (HW) and falling water (FW) in 2009 and 2010. We inves-tigated commonly used bulk geochemical tracers such as the C/N ratio and the stable isotopic composition of organic carbon (13Cor). These results were compared with lignin phenol parameters as an indicator of vascular plant detritus and branched glycerol dialkyl glycerol tetraethers (brGDGTs) to trace the input of soil organic matter (OM) from land to the aquatic settings. We also applied the crenarchaeol as an indi- cator of aquatic (rivers and lakes) OM. Our data showed that during the RW and FW seasons, the surface sediments were enriched in lignin and brGDGTs in comparison to other seasons. Our study also indicated that floodplain lake sediments primarily consisted of allochthonous, C3 plant-derived OM. However, a downstream increase in C4 macrophyte-derivedOM contribution was observed along the gradient of increas-ing open waters {\textendash} i.e., from upstream to downstream. Accordingly, we attribute the temporal and spatial difference in SOM composition to the hydrological dynamics between the floodplain lakes and the surrounding flooded forests.

}, author = {Sobrinho, R L and Bernardes, Marcelo C and Gwena{\"e}l Abril and Kim, J-H and Zell, C and Jean-Michel Mortillaro and Tarik Meziane and Moreira-Turcq, P and J S Sinningh Damst{\'e}} } @article {4260, title = {Spatial and temporal dynamics of nano- and pico-size particulate organic matter (POM) in a coastal megatidal marine system}, journal = {Limnology and Oceanography}, volume = {61}, year = {2016}, month = {05/2016}, pages = {1087-1100}, abstract = {

Surface water samples of size-selected seston (0.7{\textendash}20 μm) were collected from April 2013 to September 2013 at three similar coarse-sand benthic habitats. Additionally, seston sampling was performed at a fixed location throughout a complete tidal cycle (2014). A combination of fatty acid (FA), isotope, and flow cytometry analyses were used to determine the quality and quantity of nano- and pico-sized particulate organic matter (POM). High variability was found between fatty acid replicate samples. Similar temporal patterns were observed at two sheltered sites, while the exposed site displayed less pronounced seasonal changes. Lower concentrations of 16C and 18C polyunsaturated fatty acids were found during low tide sampling. Globally, POM was dominated by picoeukaryotes, with concentrations exceeding 50,000 cells mL-1, and (16:4ω3 + 18:3ω3)/Σω3 is proposed as novel biomarker of picoeukaryotes in this region.

}, issn = {1939-5590}, doi = {10.1002/lno.10276}, url = {http://dx.doi.org/10.1002/lno.10276}, author = {Moynihan, Molly A. and Pierrick Barbier and Fr{\'e}d{\'e}ric Olivier and Nicolas Toupoint and Tarik Meziane} } @article {3559, title = {Concentrations and Fractionation of Carbon, Iron, Sulfur, Nitrogen and Phosphorus in Mangrove Sediments Along an Intertidal Gradient (Semi-Arid Climate, New Caledonia)}, journal = {J. Mar. Sci. Eng.}, year = {2015}, month = {02/2015}, pages = {52-57}, type = {OPEN ACCESS}, abstract = {

In mangrove ecosystems, strong reciprocal interactions exist between plant and substrate. Under semi-arid climate, Rhizophora spp. are usually predominant, colonizing the seashore, and Avicennia marina develops at the edge of salt-flats, which is the highest zone in the intertidal range. Along this zonation, distribution and speciation of C, Fe, S, N, and P in sediments and pore-waters were investigated. From the land-side to the sea-side of the mangrove, sediments were characterized by I/ increase in: (i) water content; (ii) TOC; (iii) mangrove-derived OM; II/ and decrease in: (i) salinity; (ii) redox; (iii) pH; (iv) solid Fe and solid P. Beneath Avicennia and Rhizophora, TS accumulated at depth, probably as a result of reduction of iron oxides and sulfate. The loss of total Fe observed towards the sea-side may be related to sulfur oxidation and to more intense tidal flushing of dissolved components. Except the organic forms, dissolved N and P concentrations were very low beneath Avicennia and Rhizophora stands, probably as a result of their uptake by the root systems. However, in the unvegetated salt-flat, NH4+ can accumulate in organic rich and anoxic layers. This study shows: (i) the evolution of mangrove sediment biogeochemistry along the intertidal zone as a result of the different duration of tidal inundation and organic enrichment; and (ii) the strong links between the distribution and speciation of the different elements.

}, keywords = {biogeochemistry, Mangrove, New Caledonia, zonation}, issn = {2077-1312}, author = {Jonhatan Deborde and Cyril Marchand and Nathalie Molnar and Luc Della-Patrona and Tarik Meziane} } @article {3982, title = {Dietary tracers in Bathyarca glacialis from contrasting trophic regions in the Canadian Arctic}, journal = {Marine Ecology Progress Series}, volume = {536}, year = {2015}, month = {09/2015}, pages = {175-186}, keywords = {Bathyarca glacialis, Bivalve, Canadian Arctic Archipelago, FATMs, Fatty acid trophic markers, Non-methylene-interrupted fatty acid, Pelagic {\textendash} benthic coupling}, author = {Gaillard, B and Tarik Meziane and R{\'e}jean Tremblay and P Archambault and Layton, KKS and Martel, AL and Fr{\'e}d{\'e}ric Olivier} } @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 {3383, title = {Seasonal variations of the composition of microbial biofilms in sandy tidal flats: Focus of fatty acids, pigments and exopolymers}, journal = {Estuarine, Coastal and Shelf Science}, volume = {153}, year = {2015}, pages = {29 - 37}, abstract = {

Abstract Biofilms, or microbial mats, are common associations of microorganisms in tidal flats; they generally consist of a large diversity of organisms embedded in a matrix of Extracellular Polymeric Substances (EPS). These molecules are mainly composed of carbohydrates and proteins, but their detailed monomer compositions and seasonal variations are currently unknown. Yet this composition determines the numerous roles of biofilms in these systems. This study investigated the changes in composition of carbohydrates in intertidal microbial mats over a year to decipher seasonal variations in biofilms and in varying hydrodynamic conditions. This work also aimed to assess how these compositions are related to microbial assemblages. In this context, natural biofilms whose development was influenced or not by artificial structures mimicking polychaete tubes were sampled monthly for over a year in intertidal flats of the Chausey archipelago. Biofilms were compared through the analysis of their fatty acid and pigment contents, and the monosaccharide composition of their \{EPS\} carbohydrates. Carbohydrates from both colloidal and bound \{EPS\} contained mainly glucose and, to a lower extent, galactose and mannose but they showed significant differences in their detailed monosaccharide compositions. These two fractions displayed different seasonal evolution, even if glucose accumulated in both fractions in summer; bound \{EPS\} only were affected by artificial biogenic structures. Sediment composition in fatty acids and pigments showed that microbial communities were dominated by diatoms and heterotrophic bacteria. Their relative proportions, as well as those of other groups like cryptophytes, changed between times and treatments. The changes in \{EPS\} composition were not fully explained by modifications of microbial assemblages but also depended on the processes taking place in sediments and on environmental conditions. These variations of \{EPS\} compositions are likely to alter different ecosystem processes such as biostabilisation or pollutants trapping.

}, keywords = {biofilms, biogenic structures, EPS, fatty acids, monosaccharide composition, pigments}, issn = {0272-7714}, doi = {http://dx.doi.org/10.1016/j.ecss.2014.11.013}, url = {http://www.sciencedirect.com/science/article/pii/S0272771414003412}, author = {Passarelli, C and Tarik Meziane and Najet Thiney and Dominique Boeuf and B Jesus and Mickael Ruivo and Christian Jeanthon and C{\'e}dric Hubas} } @article {3941, title = {Spatial changes in fatty acids signatures of the great scallop Pecten maximus across the Bay of Biscay continental shelf}, journal = {Continental Shelf Research}, volume = {109}, year = {2015}, month = {15/10/2015}, pages = {1-9}, abstract = {

The spatial variability of food resources along continental margins can strongly influence the physiology and ecology of benthic bivalves. We explored the variability of food sources of the great scallop Pecten maximus, by determining their fatty acid (FA) composition along an inshore{\textendash}offshore gradient in the Bay of Biscay (from 15 to 190\ m depth). The FA composition of the digestive gland showed strong differences between shallow and deep-water habitats. This trend was mainly driven by their content in diatom-characteristic fatty acids, which are abundant near the coast. Scallops collected from the middle of the continental shelf were characterized by higher contents of flagellate markers than scallops from shallow habitats. This could be related to a permanent vertical stratification in the water column, which reduced vertical mixing of waters, thereby enhancing organic matter recycling through the microbial loop. In the deeper water station (190\ m), FA compositions were close to the compositions found in scallops from shallow areas, which suggest that scallops could have access to the same resources (i.e. diatoms). Muscle FA composition was more indicative of the physiological state of scallops over this depth range, revealing contrasting reproductive strategies among the two coastal sites and metabolic or physiological adaptation at greater depth (e.g. structural and functional adjustments of membrane composition). This study therefore revealed contrasted patterns between shallow and deeper habitats for both P. maximus muscle and digestive gland tissues. This emphasizes the variability in the diet of this species along its distribution range, and stresses the importance of analyzing different tissues for their FA composition in order to better understand their physiology and ecology.

}, keywords = {Depth gradient, fatty acids, Metabolism, Pecten maximus, Trophic markers}, author = {Nerot, C and Tarik Meziane and Gauthier Schaal and Grall, J and Lorrain, A and Paullet, Y-M and Kraffe, E} } @article {3522, title = {Spatio-temporal variations in the composition of organic matter in surface sediments of a mangrove receiving shrimp farm effluents (New Caledonia)}, journal = {Science of The Total Environment}, volume = {512{\textendash}513}, year = {2015}, pages = {296 - 307}, abstract = {

In order to investigate spatio-temporal variations in the composition and origin of the benthic organic matter (OM) at the sediment surface in mangrove receiving shrimp farm effluents, fatty acid (FA) biomarkers, natural stable isotopes (δ13C and δ15N), C:N ratios and chlorophyll-a (chl-a) concentrations were determined during the active and the non-active period of the farm. Fatty acid compositions in surface sediments within the mangrove forest indicated that organic matter inputs varied along the year as a result of farm activity. Effluents were the source of fresh particulate organic matter for the mangrove, as evidenced by the unsaturated fatty acid (UFA) distribution. The anthropogenic \{MUFA\} 18:1ω9 was not only accumulated at the sediment surface in some parts of the mangrove, but was also exported to the seafront. Direct release of bacteria and enhanced in situ production of fungi, as revealed by specific FAs, stimulated mangrove litter decomposition under effluent runoff condition. Also, microalgae released from ponds contributed to maintain high benthic chl-a concentrations in mangrove sediments in winter and to a shift in microphytobenthic community assemblage. Primary production was high whether the farm released effluent or not which questioned the temporary effect of shrimp farm effluent on benthic microalgae dynamic. This study outlined that mangrove benthic organic matter was qualitatively and quantitatively affected by shrimp farm effluent release and that responses to environmental condition changes likely depended on mangrove stand characteristics.

}, keywords = {Chlorophyll-a, fatty acids, Mangrove, Organic matter, Shrimp farming, Stable isotopes}, issn = {0048-9697}, doi = {http://dx.doi.org/10.1016/j.scitotenv.2014.12.082}, url = {http://www.sciencedirect.com/science/article/pii/S0048969714017938}, author = {Ad{\'e}laide Aschenbroich and Cyril Marchand and Nathalie Molnar and Jonhatan Deborde and C{\'e}dric Hubas and Herv{\'e} Rybarczyk and Tarik Meziane} } @article {4679, title = {Trophic opportunism of central Amazon floodplain fish}, journal = {Freshwater Biology}, volume = {60}, year = {2015}, pages = {1659{\textendash}1670}, author = {Jean-Michel Mortillaro and Marc Pouilly and Wach, M and Carlos E.C. Freitas and Gwena{\"e}l Abril and Tarik Meziane} } @article {Abril2014, title = {{Amazon River carbon dioxide outgassing fuelled by wetlands}}, journal = {Nature}, volume = {505}, year = {2014}, pages = {395-398}, publisher = {Nature}, doi = {10.1038/nature12797}, author = {Gwena{\"e}l Abril and Martinez, Jean Michel and Luis Felipe Artigas and Moreira-Turcq, Patricia and Marc F Benedetti and Vidal, Luciana and Tarik Meziane and Kim, Jung-Hyun and Bernardes, Marcelo C and Savoye, Nicolas and Deborde, Jonathan and Lima Souza, Edivaldo and Alb{\'e}ric, Patrick and Fernandes, Marcelo and de Souza, Landim and Roland, Fabio} } @article {Passarelli2013, title = {{Organisms as cooperative ecosystem engineers in intertidal flats}}, journal = {Journal of Sea Research}, volume = {92}, year = {2014}, month = {09/2014}, pages = {92-101}, abstract = {

The importance of facilitative interactions and organismal ecosystem engineering for establishing the structure of communities is increasingly being recognised for many different ecosystems. For example, soft-bottom tidal flats host a wide range of ecosystem engineers, probably because the harsh physico-chemical environmental conditions render these species of particular importance for community structure and function. These environments are therefore interesting when focusing on how ecosystem engineers interact and the consequences of these interactions on community dynamics. In this review, we initially detail the influence on benthic systems of two kinds of ecosystem engineers that are particularly common in tidal flats. Firstly, we examine species providing biogenic structures, which are often the only source of habitat complexity in these environments. Secondly, we focus on species whose activities alter sediment stability, which is a crucial feature structuring the dynamics of communities in tidal flats. The impacts of these engineers on both environment and communities were assessed but in addition the interaction between ecosystem engineers was examined. Habitat cascades occur when one engineer favours the development of another, which in turn creates or modifies and improves habitat for other species. Non-hierarchical interactions have often been shown to display non-additive effects, so that the effects of the association cannot be predicted from the effects of individual organisms. Here we propose the term of {\textquotedblleft}cooperative ecosystem engineering{\textquotedblright} when two species interact in a way which enhances habitat suitability as a result of a combined engineering effect. Finally, we conclude by describing the potential threats for ecosystem engineers in intertidal areas, potential effects on their interactions and their influence on communities and ecosystem function.

}, keywords = {Biogenic Structure, Cooperative Ecosystem Engineers, Habitat Cascade, Sediment stability, tidal flats}, doi = {10.1016/j.seares.2013.07.010}, author = {Passarelli, C and Fr{\'e}d{\'e}ric Olivier and Paterson, D M and Tarik Meziane and C{\'e}dric Hubas} } @article {3994, title = {Seasonal Pattern of the Biogeochemical Properties of Mangrove Sediments Receiving Shrimp Farm Effluents (New Caledonia)}, journal = {Journal of acquaculture research \& development}, volume = {05}, year = {2014}, issn = { 2155-9546}, author = {Cyril Marchand and Molnar, N and Deborde, J and Patrona, LC and Tarik Meziane} } @article {7331, title = {Highly Dynamic Cellular-Level Response of Symbiotic Coral to a Sudden Increase in Environmental NitrogenABSTRACT}, journal = {mBio}, volume = {4}, year = {2013}, month = {Jan-07-2013}, doi = {10.1128/mBio.00052-13}, url = {https://mbio.asm.org/content/4/3/e00052-13}, author = {Kopp, C. and Pernice, M. and Domart-Coulon, I. and Djediat, C. and Spangenberg, J. E. and Alexander, D. T. L. and Hignette, M. and Tarik Meziane and Meibom, A.}, editor = {Orphan, Victoria and McFall-Ngai, Margaret J.} } @article {7333, title = {Impacts of shrimp farm effluent on water quality, benthic metabolism and~N-dynamics in a mangrove forest (New Caledonia)}, journal = {Estuarine, Coastal and Shelf Science}, volume = {117}, year = {2013}, month = {Jan-01-2013}, pages = {12 - 21}, issn = {02727714}, doi = {10.1016/j.ecss.2012.07.012}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0272771412002739}, author = {Molnar, Nathalie and Welsh, David T. and Marchand, Cyril and Deborde, Jonathan and Tarik Meziane} } @article {7356, title = {Seasonal Variations in Maternal Provisioning of Crepidula fornicata (Gastropoda): Fatty Acid Composition of Females, Embryos and Larvae}, journal = {PLoS ONE}, volume = {8}, year = {2013}, month = {Dec-09-2014}, pages = {e75316}, doi = {10.1371/journal.pone.007531610.137}, url = {https://dx.plos.org/10.1371/journal.pone.0075316}, author = {Leroy, Fanny and Tarik Meziane and Riera, Pascal and Comtet, Thierry}, editor = {Anil, Arga~Chandrashekar} } @article {7340, title = {Trophic resources of the bivalve, Venus verrucosa , in the Chausey archipelago (Normandy, France) determined by stable isotopes and fatty acids}, journal = {Aquatic Living Resources}, volume = {26}, year = {2013}, month = {Jan-01-2013}, pages = {229 - 239}, issn = {0990-7440}, doi = {10.1051/alr/2013058}, url = {http://www.alr-journal.org/10.1051/alr/2013058}, author = {Perez, V{\'e}ronique and Fr{\'e}d{\'e}ric Olivier and Tremblay, Rejean and Neumeier, Urs and Thebault, Julien and Chauvaud, Laurent and Tarik Meziane} } @article {7355, title = {New 2-Methyl-13-Icosenoic Acid from the Temperate Calcisponge Leuconia johnstoni}, journal = {Lipids}, volume = {47}, year = {2012}, month = {Jan-04-2012}, pages = {345 - 353}, issn = {0024-4201}, doi = {10.1007/s11745-011-3631-4}, url = {http://doi.wiley.com/10.1007/s11745-011-3631-4}, author = {Qu{\'e}vrain, Elodie and Barnathan, Gilles and Tarik Meziane and Domart-Coulon, Isabelle and Rabesaotra, Vony and Bourguet-Kondracki, Marie-Lise} } @article {7339, title = {Ontogenetic change in the lipid and fatty acid composition of scleractinian coral larvae}, journal = {Coral Reefs}, volume = {31}, year = {2012}, month = {Jan-06-2012}, pages = {613 - 619}, issn = {0722-4028}, doi = {10.1007/s00338-012-0874-3}, url = {http://link.springer.com/10.1007/s00338-012-0874-3}, author = {Figueiredo, J. and Baird, A. H. and Cohen, M. F. and Flot, J.-F. and Kamiki, T. and Tarik Meziane and Tsuchiya, M. and Yamasaki, H.} } @article {7341, title = {Responses of juvenile sea bass, Dicentrarchus labrax, exposed to acute concentrations of crude oil, as assessed by molecular and physiological biomarkers}, journal = {Chemosphere}, volume = {87}, year = {2012}, month = {Jan-05-2012}, pages = {692 - 702}, issn = {00456535}, doi = {10.1016/j.chemosphere.2011.12.059}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0045653511014287}, author = {Kerambrun, E. and Le Floch, S. and Sanchez, W. and Thomas Guyon, H. and Tarik Meziane and Henry, F. and Amara, R.} } @article {7351, title = {Surface adhesion of microphytobenthic biofilms is enhanced under Hediste diversicolor (O.F. M{\"u}ller) trophic pressure}, journal = {Journal of Experimental Marine Biology and Ecology}, volume = {438}, year = {2012}, month = {Jan-12-2012}, pages = {52 - 60}, issn = {00220981}, doi = {10.1016/j.jembe.2012.10.005}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0022098112003577}, author = {Passarelli, Claire and C{\'e}dric Hubas and Nicolas Segui, Audrey and Grange, Julie and Tarik Meziane} } @article {7343, title = {There{\textquoteright}s more to the picture than meets the eye: Sampling microphytobenthos in a heterogeneous environment}, journal = {Estuarine, Coastal and Shelf Science}, volume = {95}, year = {2011}, month = {Jan-12-2011}, pages = {470 - 476}, issn = {02727714}, doi = {10.1016/j.ecss.2011.10.021}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0272771411004434}, author = {Spilmont, Nicolas and Seuront, Laurent and Tarik Meziane and Welsh, David T.} } @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 {7344, title = {Identification of the food sources of sympatric ghost shrimp ( Trypaea australiensis ) and soldier crab ( Mictyris longicarpus ) populations using a lipid biomarker, dual stable isotope approach}, journal = {Austral Ecology}, volume = {34}, year = {2009}, month = {Jan-12-2009}, pages = {878 - 888}, issn = {14429985}, doi = {10.1111/aec.2009.34.issue-810.1111/j.1442-9993.2009.01994.x}, url = {http://blackwell-synergy.com/doi/abs/10.1111/aec.2009.34.issue-8}, author = {Spilmont, Nicolas and Tarik Meziane and Seuront, Laurent and Welsh, David T.} } @article {7345, title = {Oxygen and nutrient dynamics of the upside down jellyfish (Cassiopea sp.) and its influence on benthic nutrient exchanges and primary production}, journal = {Hydrobiologia}, volume = {635}, year = {2009}, month = {Jan-11-2009}, pages = {351 - 362}, issn = {0018-8158}, doi = {10.1007/s10750-009-9928-0}, url = {http://link.springer.com/10.1007/s10750-009-9928-0}, author = {Welsh, David T. and Dunn, Ryan J. K. and Tarik Meziane} } @article {7346, title = {Role of grapsid crabs, Parasesarma erythrodactyla, in entry of mangrove leaves into an estuarine food web: a mesocosm study}, journal = {Marine Biology}, volume = {156}, year = {2009}, month = {Jan-10-2009}, pages = {2343 - 2352}, issn = {0025-3162}, doi = {10.1007/s00227-009-1262-6}, url = {http://link.springer.com/10.1007/s00227-009-1262-6}, author = {Nerot, Caroline and Tarik Meziane and Provost-Govrich, Anais and Rybarczyk, Herv{\'e} and Lee, S. Yip} } @article {7342, title = {Opportunistic predation by small fishes on epibiota of jetty pilings in urban waterways}, journal = {Journal of Fish Biology}, volume = {72}, year = {2008}, month = {Jan-01-2008}, pages = {205 - 217}, doi = {10.1111/j.1095-8649.2007.01705.x}, url = {http://doi.wiley.com/10.1111/j.1095-8649.2007.01705.x}, author = {Moreau, S. and P{\'e}ron, C. and Pitt, K. A. and Connolly, R. M. and Lee, S. Y. and Tarik Meziane} } @article {7325, title = {Growth and condition indices in juvenile sole Solea solea measured to assess the quality of essential fish habitat}, journal = {Marine Ecology Progress Series}, volume = {351}, year = {2007}, month = {Jun-12-2007}, pages = {201 - 208}, issn = {0171-8630}, doi = {10.3354/meps07154}, url = {http://www.int-res.com/abstracts/meps/v351/p201-208/}, author = {Amara, R and Tarik Meziane and Gilliers, C and Hermel, G and Laffargue, P} } @article {7337, title = {Inter-specific and geographical variations in the fatty acid composition of mangrove leaves: implications for using fatty acids as a taxonomic tool and tracers of organic matter}, journal = {Marine Biology}, volume = {150}, year = {2007}, month = {Jan-03-2007}, pages = {1103 - 1113}, issn = {0025-3162}, doi = {10.1007/s00227-006-0424-z}, url = {http://link.springer.com/10.1007/s00227-006-0424-z}, author = {Tarik Meziane and Lee, S. Y. and Mfilinge, P. L. and Shin, P. K. S. and Lam, M. H. W. and Tsuchiya, M.} } @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 {7330, title = {Litter dynamics and particulate organic matter outwelling from a subtropical mangrove in Okinawa Island, South Japan}, journal = {Estuarine, Coastal and Shelf Science}, volume = {63}, year = {2005}, month = {Jan-04-2005}, pages = {301 - 313}, issn = {02727714}, doi = {10.1016/j.ecss.2004.11.022}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0272771404003543}, author = {Mfilinge, Prosper L. and Tarik Meziane and Bachok, Zainudin and Tsuchiya, Makoto} } @article {7349, title = {Total Lipid and Fatty Acid Classes in Decomposing Mangrove Leaves of Bruguiera gymnorrhiza and Kandelia candel: Significance with respect to Lipid Input}, journal = {Journal of Oceanography}, volume = {61}, year = {2005}, month = {Jan-06-2005}, pages = {613 - 622}, issn = {0916-8370}, doi = {10.1007/s10872-005-0069-4}, url = {http://link.springer.com/10.1007/s10872-005-0069-4}, author = {Mfilinge, Prosper L. and Tarik Meziane and Bachok, Zainudin and Tsuchiya, Makoto} } @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 {7334, title = {Croissance de juv{\'e}niles de Nereis diversicolor nourris avec des d{\'e}tritus d{\textquoteright}halophytes}, journal = {Oceanologica Acta}, volume = {25}, year = {2002}, month = {Jan-05-2002}, pages = {119 - 124}, issn = {03991784}, doi = {10.1016/S0399-1784(02)01187-8}, url = {https://linkinghub.elsevier.com/retrieve/pii/S0399178402011878}, author = {Tarik Meziane and Retiere, Christian} } @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 {7326, title = {Organic matter in a subtropical mangrove-estuary subjected to wastewater discharge: Origin and utilisation by two macrozoobenthic species}, journal = {Journal of Sea Research}, volume = {47}, year = {2002}, month = {Jan-02-2002}, pages = {1 - 11}, issn = {13851101}, doi = {10.1016/S1385-1101(01)00092-2}, url = {https://linkinghub.elsevier.com/retrieve/pii/S1385110101000922}, author = {Tarik Meziane and Tsuchiya, Makoto} } @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} } @article {7329, title = {The use of lipid markers to define sources of organic matter in sediment and food web of the intertidal salt-marsh-flat ecosystem of Mont-Saint-Michel Bay, France}, journal = {Journal of Sea Research}, volume = {38}, year = {1997}, month = {Jan-12-1997}, pages = {47 - 58}, issn = {13851101}, doi = {10.1016/S1385-1101(97)00035-X}, url = {https://linkinghub.elsevier.com/retrieve/pii/S138511019700035X}, author = {Tarik Meziane and Bodineau, Laurent and Retiere, Christian and Thoumelin, Guy} }