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

Dynamics of particulate organic matter composition in coastal systems: Forcing of spatio-temporal variability at multi-systems scale. Liénart, C., Savoye, N., David, V., Ramond, P., Rodriguez Tress, P., Hanquiez, V., Marieu, V., Aubert, F., Aubin, S., Bichon, S., Boinet, C., Bourasseau, L., Bozec, Y., Bréret, M., Breton, E., Caparros, J., Cariou, T., Claquin, P., Conan, P., Corre, A., Costes, L., Crouvoisier, M., Del Amo, Y., Derriennic, H., Dindinaud, F., Duran, R., Durozier, M., Devesa, J., Ferreira, S., Feunteun, E., Garcia, N., Geslin, S., Grossteffan, E., Gueux, A., Guillaudeau, J., Guillou, G., Jolly, O., Lachaussée, N., Lafont, M., Lagadec, V., Lamoureux, J., Lauga, B., Lebreton, B., Lecuyer, E., Lehodey, J., Leroux, C., L'Helguen, S., Macé, E., Maria, E., Mousseau, L., Nowaczyk, A., Pineau, P., Petit, F., Pujo-Pay, M., Raimbault, P., Rimmelin-Maury, P., Rouaud, V., Sauriau, P., Sultan, E., & Susperregui, N. 162:271–289.

Paper doi abstract bibtex

In costal systems, particulate organic matter (POM) results from a multiplicity of sources having their respective dynamics in terms of production, decomposition, transport and burial. The POM pool experiences thus considerable spatial and temporal variability. In order to better understand this variability, the present study employs statistical multivariate analyses to investigate links between POM composition and environmental forcings for a panel of twelve coastal systems distributed along the three maritime regions of France and monitored weekly to monthly for 1 to 8 years. At multi-system scale, two main gradients of POC composition have been identified: a ‘Continent-Ocean’ gradient associated with hydrodynamics, sedimentary dynamics and depth of the water column, and a gradient of trophic status related to nutrient availability. At local scale, seasonality of POC composition appears to be station-specific but still related to part of the above-mentioned forcings. A typology of systems was established by coupling spatial and temporal variability of POC composition. Four groups were highlighted: (1) the estuarine stations where POC composition is dominated by terrestrial POM and driven by hydrodynamics and sedimentary processes, (2) the oligotrophic systems, characterized by the contribution of diazotrophs due to low nutrient availability, and the marine meso/eutroph systems whose POC composition is (3) either deeply dominated by phytoplankton or (4) dominated by phytoplankton but where the contribution of continental and benthic POC is not negligible and is driven by hydrodynamics, sedimentary processes and the height of the water column. Finally, the present study provides several insights into the different forcings to POM composition and dynamics in temperate coastal systems at local and multi-system scales. This work also presents a methodological approach that establishes statistical links between forcings and POM composition, helping to gain more objectively insight of forcings.

@article{lienart_dynamics_2018,
	title = {Dynamics of particulate organic matter composition in coastal systems: Forcing of spatio-temporal variability at multi-systems scale},
	volume = {162},
	issn = {0079-6611},
	url = {http://www.sciencedirect.com/science/article/pii/S0079661117302100},
	doi = {10.1016/j.pocean.2018.02.026},
	shorttitle = {Dynamics of particulate organic matter composition in coastal systems},
	abstract = {In costal systems, particulate organic matter ({POM}) results from a multiplicity of sources having their respective dynamics in terms of production, decomposition, transport and burial. The {POM} pool experiences thus considerable spatial and temporal variability. In order to better understand this variability, the present study employs statistical multivariate analyses to investigate links between {POM} composition and environmental forcings for a panel of twelve coastal systems distributed along the three maritime regions of France and monitored weekly to monthly for 1 to 8 years. At multi-system scale, two main gradients of {POC} composition have been identified: a ‘Continent-Ocean’ gradient associated with hydrodynamics, sedimentary dynamics and depth of the water column, and a gradient of trophic status related to nutrient availability. At local scale, seasonality of {POC} composition appears to be station-specific but still related to part of the above-mentioned forcings. A typology of systems was established by coupling spatial and temporal variability of {POC} composition. Four groups were highlighted: (1) the estuarine stations where {POC} composition is dominated by terrestrial {POM} and driven by hydrodynamics and sedimentary processes, (2) the oligotrophic systems, characterized by the contribution of diazotrophs due to low nutrient availability, and the marine meso/eutroph systems whose {POC} composition is (3) either deeply dominated by phytoplankton or (4) dominated by phytoplankton but where the contribution of continental and benthic {POC} is not negligible and is driven by hydrodynamics, sedimentary processes and the height of the water column. Finally, the present study provides several insights into the different forcings to {POM} composition and dynamics in temperate coastal systems at local and multi-system scales. This work also presents a methodological approach that establishes statistical links between forcings and {POM} composition, helping to gain more objectively insight of forcings.},
	pages = {271--289},
	journaltitle = {Progress in Oceanography},
	shortjournal = {Progress in Oceanography},
	author = {Liénart, Camilla and Savoye, Nicolas and David, Valérie and Ramond, Pierre and Rodriguez Tress, Paco and Hanquiez, Vincent and Marieu, Vincent and Aubert, Fabien and Aubin, Sébastien and Bichon, Sabrina and Boinet, Christophe and Bourasseau, Line and Bozec, Yann and Bréret, Martine and Breton, Elsa and Caparros, Jocelyne and Cariou, Thierry and Claquin, Pascal and Conan, Pascal and Corre, Anne-Marie and Costes, Laurence and Crouvoisier, Muriel and Del Amo, Yolanda and Derriennic, Hervé and Dindinaud, François and Duran, Robert and Durozier, Maïa and Devesa, Jérémy and Ferreira, Sophie and Feunteun, Eric and Garcia, Nicole and Geslin, Sandrine and Grossteffan, Emilie and Gueux, Aurore and Guillaudeau, Julien and Guillou, Gaël and Jolly, Orianne and Lachaussée, Nicolas and Lafont, Michel and Lagadec, Véronique and Lamoureux, Jézabel and Lauga, Béatrice and Lebreton, Benoît and Lecuyer, Eric and Lehodey, Jean-Paul and Leroux, Cédric and L'Helguen, Stéphane and Macé, Eric and Maria, Eric and Mousseau, Laure and Nowaczyk, Antoine and Pineau, Philippe and Petit, Franck and Pujo-Pay, Mireille and Raimbault, Patrick and Rimmelin-Maury, Peggy and Rouaud, Vanessa and Sauriau, Pierre-Guy and Sultan, Emmanuelle and Susperregui, Nicolas},
	urldate = {2019-12-09},
	date = {2018-03-01},
	langid = {english},
	keywords = {France, Coastal systems, Environmental forcing, Meta-analysis, Particulate organic matter}
}

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