Dynamics of particulate organic matter composition in coastal systems: A spatio-temporal study at multi-systems scale

Liénart, Camilla; Savoye, Nicolas; Bozec, Yann; Breton, Elsa; Conan, Pascal; David, Valérie; Feunteun, Éric; Grangeré, Karine; Kerhervé, Philippe; Lebreton, Benoît; Lefebvre, Sébastien; L’Helguen, Stéphane; Mousseau, Laure; Raimbault, Patrick; Richard, Pierre; Riera, Pascal; Sauriau, Pierre-Guy; Schaal, Gauthier; Aubert, Fabien; Aubin, Sébastien; Bichon, Sabrina; Boinet, Christophe; Bourasseau, L.; Bréret, Martine; Caparros, Jocelyne; Cariou, Thierry; Charlier, Karine; Claquin, Pascal; Cornille, Vincent; Corre, Anne-Marie; Costes, Laurence; Crispi, Olivier; Crouvoisier, Muriel; Czamanski, Marie; Amo, Yolanda Del; Derriennic, Hervé; Dindinaud, François; Durozier, Maïa; Hanquiez, Vincent; Nowaczyk, Antoine; Devesa, Jérémy; Ferreira, Sophie; Fornier, M.; Garcia, Fabrice; Garcia, Nicole; Geslin, Sandrine; Grossteffan, Emilie; Gueux, Aurore; Guillaudeau, Julien; Guillou, Gaël; Joly, Orianne; Lachaussée, Nicolas; Lafont, M.; Lamoureux, Jézabel; Lécuyer, Éric; Lehodey, Jean-Paul; Lemeille, David; Leroux, Cédric; Macé, Éric; Maria, Eric; Pineau, Philippe; Petit, Franck; Pujo‐Pay, Mireille; Rimelin-Maury, Peggy; Sultan, Émmanuelle

doi:10.1016/j.pocean.2017.03.001

Cited by 64 publications

(50 citation statements)

References 101 publications

(198 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Indeed, the fixation of atmospheric N 2 by diazotrophic organisms (e.g., cyanobacteria) in offshore and oligotrophic waters is well documented to lower the δ 15 N values of the residual NO 3 pool available for primary producers in these areas (see review by Montoya, 2007). Diazotrophic organisms were demonstrated to be preponderant in the GoL (Kerhervé et al, 2001; Le Moal and Biegala, 2009;Liénart et al, 2017), thus resulting in low δ 15 N values in consumers at all trophic levels (especially when compared to their counterparts in the BoB waters, for instance), from mesozooplankton (Chouvelon et al, 2012(Chouvelon et al, , 2014bEspinasse et al, 2014;Bănaru et al, 2014) and suspension-feeders like bivalves (Cresson et al, 2016;Briant et al, 2018) to deep-sea fish and crustaceans (present study;…”

Section: General Trends and Differences Between Systemsmentioning

confidence: 99%

“…Indeed, the NE Atlantic shelves (such as the Bay of Biscay) and the Mediterranean Sea are considered distinct biogeochemical provinces for a long time (e.g., Longhurst, 1998Longhurst, , 2007Reygondeau et al, 2013). Moreover, the more oligotrophic character of the Mediterranean system compared to the Atlantic one has been previously documented, especially from the composition of the organic matter (e.g., presence of diazotrophic organisms) sustaining food webs (Kerhervé et al, 2001;Liénart et al, 2017). Nonetheless, a number of species can be found in both ecosystems, allowing direct comparisons.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Oligotrophy as a major driver of mercury bioaccumulation in medium-to high-trophic level consumers: A marine ecosystem-comparative study

Chouvelon

Cresson

Bouchoucha

et al. 2018

Environmental Pollution

View full text Add to dashboard Cite

Mercury (Hg) is a global contaminant of environmental concern. Numerous factors influencing its bioaccumulation in marine organisms have already been described at both individual and species levels (e.g., size or age, habitat, trophic level). However, few studies have compared the trophic characteristics of ecosystems to explain underlying mechanisms of differences in Hg bioaccumulation and biomagnification among food webs and systems. The present study aimed at investigating the potential primary role of the trophic status of systems on Hg bioaccumulation and biomagnification in temperate marine food webs, as shown by their medium-to high-trophic level consumers. It used data from samples collected at the shelf-edge (i.e. offshore organisms) in two contrasted ecosystems: the Bay of Biscay in the North-East Atlantic Ocean and the Gulf of Lion in the North-West Mediterranean Sea. Seven species including crustaceans, sharks and teleost fish, previously analysed for their total mercury (T-Hg) concentrations and their stable carbon and nitrogen isotope compositions, were considered for a meta-analysis. In addition, methylated mercury forms (or methyl-mercury, Me-Hg) were analysed. Mediterranean organisms presented systematically lower sizes than Atlantic ones, and lower δC and δN values, the latter values especially highlighting the more oligotrophic character of Mediterranean waters. Mediterranean individuals also showed significantly higher T-Hg and Me-Hg concentrations. Conversely, Me-Hg/T-Hg ratios were higher than 85% for all species, and quite similar between systems. Finally, the biomagnification power of Hg was different between systems when considering T-Hg, but not when considering Me-Hg, and was not different between the Hg forms within a given system. Overall, the different parameters showed the crucial role of the low primary productivity and its effects rippling through the compared ecosystems in the higher Hg bioaccumulation seen in organisms from oligotrophic Mediterranean waters.

show abstract

Section: General Trends and Differences Between Systemsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Oligotrophy as a major driver of mercury bioaccumulation in medium-to high-trophic level consumers: A marine ecosystem-comparative study

Chouvelon

Cresson

Bouchoucha

et al. 2018

Environmental Pollution

View full text Add to dashboard Cite

show abstract

“…These two ecosystems have been chosen for their differences in terms of trophic status (i.e. mesotrophy vs. oligotrophy; (Liénart et al, 2017) but also in terms of probable contamination, since the BoB is open onto the Atlantic Ocean while the GoL is part of the Mediterranean semi-enclosed sea. In addition, both ecosystems are major areas for fisheries, for which trace metal concentrations in commercial species may be of concern.…”

mentioning

confidence: 99%

Trace metal concentrations in the muscle of seven marine species: Comparison between the Gulf of Lions (North-West Mediterranean Sea) and the Bay of Biscay (North-East Atlantic Ocean)

Mille

Cresson

Chouvelon

et al. 2018

Marine Pollution Bulletin

View full text Add to dashboard Cite

Concentrations of 6 trace metals (Ag, Cd, Cu, Ni, Pb, Zn) in the muscle of 2 sharks (Galeus melastomus and Scyliorhinus canicula), 4 teleosts (Helicolenus dactylopterus, Lepidorhombus boscii, Micromesistius poutassou and Phycis blennoides) and 1 crustacean (Nephrops norvegicus) were compared between the Bay of Biscay (Atlantic Ocean) and the Gulf of Lions (Mediterranean Sea). Although average concentrations and the trace element pollution index were generally higher in the Gulf of Lions, significant differences between the two ecosystems were only found for Zn for Helicolenus dactylopterus, and for Ag and Cu for the crustacean N. norvegicus. Moreover, some relationships between trophic level or size and metal concentrations were found for these two species. The absence of clear pattern may result from the blurring effect of contamination and excretion that may act differentially for all species and all elements. Highlights► Low concentrations of trace metals in the muscle tissue for all studied marine species ► Absence of clear patterns for all studied species and elements ► Metal concentrations were mainly higher in the Gulf of Lions than in the Bay of Biscay.

show abstract

“…A study (Liénart et al, 2017(Liénart et al, , 2018 dedicated to the origin and composition of particulate organic matter (POM) highlighted the high dominance of phytoplankton in the POM composition in the SOMLIT ecosystems, except in the Gironde estuary in which POM is mainly of terrestrial origin. Two main gradients were revealed.…”

Section: Some Key Scientific Resultsmentioning

confidence: 99%

Coastal Ocean and Nearshore Observation: A French Case Study

et al. 2019

Self Cite

View full text Add to dashboard Cite

To understand and predict the physical, chemical, and biological processes at play in coastal and nearshore marine areas requires an integrated, interdisciplinary approach. The case study of the French structuration of coastal ocean and nearshore observing systems provides an original overview on a federative research infrastructure named ILICO. It is a notable example of national structuration and pan-institution efforts to investigate the forefront of knowledge on the processes at work within the critical coastal zone. ILICO comprises, in a pluridisciplinary approach, eight distributed networksystems of observation and data analysis that are accredited and financially supported by French research institutions and the French Ministry for Higher Education, Research, and Innovation. ILICO observation points are implemented along metropolitan and overseas French coasts, where coastline dynamics, sea level evolution, physical and biogeochemical water properties, coastal water dynamics, phytoplankton composition, and health of coral reefs are monitored in order to address a wide range of scientific questions. To give an overview of the diversity and potential of the observations carried out, this paper offers a detailed presentation of three constituting networks: Service Observation en Milieu LITtoral (SOMLIT), with homogeneous sampling strategies, DYNALIT, with heterogeneous sampling strategies adapted to different environments, and Mediterranean Ocean Observing System for the Environment (MOOSE), an integrated, pluri-disciplinary coastal/offshore regional observatory in the northwestern Mediterranean Sea. ILICO was conceived using a European framework. It addresses the great challenges of the next decade in terms of sustainability, cost-efficiency, interoperability, and innovation. This paper emphasizes the added-value of federating these systems, and highlights some recommendations for the future.

show abstract

Dynamics of particulate organic matter composition in coastal systems: A spatio-temporal study at multi-systems scale

Abstract: Please note that this is an author-produced PDF of an article accepted for publication following peer review. The definitive publisher-authenticated version is available on the publisher Web site.

Cited by 64 publications

References 101 publications

Oligotrophy as a major driver of mercury bioaccumulation in medium-to high-trophic level consumers: A marine ecosystem-comparative study

Oligotrophy as a major driver of mercury bioaccumulation in medium-to high-trophic level consumers: A marine ecosystem-comparative study

Trace metal concentrations in the muscle of seven marine species: Comparison between the Gulf of Lions (North-West Mediterranean Sea) and the Bay of Biscay (North-East Atlantic Ocean)

Coastal Ocean and Nearshore Observation: A French Case Study

Contact Info

Product

Resources

About