World Library  

Add to Book Shelf
Flag as Inappropriate
Email this Book

Fluorescence and Absorption Properties of Chromophoric Dissolved Organic Matter (Cdom) in Coastal Surface Waters of the Northwestern Mediterranean Sea (Bay of Marseilles, France) : Volume 7, Issue 4 (22/07/2010)

By Para, J.

Click here to view

Book Id: WPLBN0004005547
Format Type: PDF Article :
File Size: Pages 44
Reproduction Date: 2015

Title: Fluorescence and Absorption Properties of Chromophoric Dissolved Organic Matter (Cdom) in Coastal Surface Waters of the Northwestern Mediterranean Sea (Bay of Marseilles, France) : Volume 7, Issue 4 (22/07/2010)  
Author: Para, J.
Volume: Vol. 7, Issue 4
Language: English
Subject: Science, Biogeosciences, Discussions
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


APA MLA Chicago

Tedetti, M., Sempéré, R., Charrière, B., Fontana, C., Para, J., & Coble, P. G. (2010). Fluorescence and Absorption Properties of Chromophoric Dissolved Organic Matter (Cdom) in Coastal Surface Waters of the Northwestern Mediterranean Sea (Bay of Marseilles, France) : Volume 7, Issue 4 (22/07/2010). Retrieved from

Description: Université de la Méditerranée, LMGEM, Centre d'Océanologie de Marseille, UMR 6117, Case 901, 13288 Marseille Cedex 9, France. Seawater samples were collected in surface waters (2 and 5 m depths) of the Bay of Marseilles (Northwestern Mediterranean Sea; 5°17′30′′ E, 43°14′30′′ N) during one year from November 2007 to December 2008 and studied for total organic carbon (TOC) as well as chromophoric dissolved organic matter (CDOM) optical properties (absorbance and fluorescence). The annual mean value of surface CDOM absorption coefficient at 350 nm [aCDOM(350)] was very low (0.10 ± 0.02 m−1) with in comparison to values usually found in coastal waters, and no significant seasonal trend in aCDOM(350) could be determined. By contrast, the spectral slope of CDOM absorption (SCDOM) was significantly higher (0.023 ± 0.003 nm−1) in summer than in fall and winter periods (0.017 ± 0.002 nm−1), reflecting either CDOM photobleaching or production in surface waters during stratified sunny periods. The CDOM fluorescence, assessed through excitation emission matrices (EEMs), was dominated by protein-like component (peak T; 1.30–21.94 QSU) and marine humic-like component (peak M; 0.55–5.82 QSU), while terrestrial humic-like fluorescence (peak C; 0.34–2.99 QSU) remained very low. This reflected a dominance of relatively fresh material from biological origin within the CDOM fluorescent pool. At the end of summer, surface CDOM fluorescence was very low and strongly blue shifted, reinforcing the hypothesis of CDOM photobleaching. Our results suggested that unusual Rhône River plume eastward intrusion events may reach Marseilles Bay within 2–3 days and induce local phytoplankton blooms and subsequent fluorescent CDOM production (peaks M and T) without adding terrestrial fluorescence signatures (peak C). Besides Rhône River plumes, mixing events of the entire water column injected humic (peaks C and M) CDOM from the bottom into the surface and thus appeared also as an important source of CDOM in surface waters of the Marseilles Bay. Therefore, the assessment of CDOM optical properties, within the hydrological context, pointed out several biotic (in situ biological production, biological production within Rhône River plumes) and abiotic (photobleaching, mixing) factors controlling CDOM transport, production and removal in this highly urbanized coastal area.

Fluorescence and absorption properties of chromophoric dissolved organic matter (CDOM) in coastal surface waters of the Northwestern Mediterranean Sea (Bay of Marseilles, France)

Arnoux-Chiavassa, S., Rey, V., and Fraunié, P.: Modeling 3-D Rhone River plume using a higher order advection scheme, Oceanol. Acta, 26, 299–309, 2003.; Azam, F., Fenchel, T., Field, J. G., Gray, J. S., Meyer-Reil, L. A., and Thingstad, F.: The ecological role of water-column microbes in the sea, Mar. Ecol.-Prog. Ser., 10, 257–263, 1983.; Coble, P. G.: Marine optical biogeochemistry: the chemistry of ocean color, Chem. Rev., 107, 402–418, 2007.; Babin, M., Stramski, D., Ferrari, G. M., Claustre, H., Bricaud, A., Obolensky, G., and Hoepffner, N.: Variations in the light absorption coefficients of phytoplankton, non-algal particles, and dissolved organic matter in coastal waters around Europe, J. Geophys. Res., 108(C7), 3211, 2003.; Belzile, C., Roesler, C. S., Christensen, J. P., Shakhova, N., and Semiletov, I.: Fluorescence measured using the WETStar DOM fluorometer as a proxy for dissolved matter absorption, Estuar. Coast. Shelf S., 67, 441–449, 2006.; Blough, N. V., Zafiriou, O. C., and Bonilla, J.: Optical absorption spectra of water from the Orinoco River outflow: terrestrial input of colored organic matter to the Caribbean, J. Geophys. Res., 98(C2), 2271–2278, 1993.; Blough, N. V. and Del Vecchio, R.: Chromophoric DOM in the coastal environment, in: Biogeochemistry of Marine Dissolved Organic Matter, edited by: Hansell, D. A. and Carlson, C. A., Academic Press, San Diego, 509–540, 2002.; Brasseur, P., Beckers, J. M., Brankart, J. M., and Schoenauen, R.: Seasonal temperature and salinity fields in the Mediterranean Sea: climatological analyses of a historical data set, Deep-Sea Res. Pt. I, 43, 159–192, 1996.; Bricaud, A., Morel, A., and Prieur, L.: Absorption by dissolved organic matter of the sea (yellow substance) in the UV and visible domains, Limnol. Oceanogr., 26, 43–53, 1981.; Broche, P., Devenon, J. L., Forget, P., De Maistre, J. C., Naudin, J. J., and Cauwet, G.: Experimental study of the Rhone plume. Part I: physics and dynamics, Oceanol. Acta, 21, 725–738, 1998.; Coble, P. G., Green, S. A., Blough, N. V., and Gagosian, R. B.: Characterisation of dissolved organic matter in the Black Sea by fluorescence spectroscopy, Nature, 348, 432–435, 1990.; Coble, P. G.: Characterization of marine and terrestrial DOM in seawater using excitation emission matrix spectroscopy, Mar. Chem., 51, 325–346, 1996.; Coble, P. G., Schultz, C. A., and Mopper, K.: Fluorescence contouring analysis of DOC intercalibration experiments samples: a comparison of techniques, Mar. Chem., 41, 173–178, 1993.; Coble, P. G., Del Castillo, C. E., and Avril, B.: Distribution and optical properties of CDOM in the Arabian Sea during the 1995 southwest monsoon, Deep-Sea Res. Pt. II, 45, 2195–2223, 1998.; Cristofanelli, P. and Bonasoni, P.: Background ozone in the Southern Europe and Mediterranean area: influence of the transport processes, Environ. Pollut., 157, 1399–1406, 2009.; Cruzado, A. and Velasquez, Z. R.: Nutrients and phytoplankton in the Gulf of Lions, Cont. Shelf. Res., 10, 931–942, 1990.; D'Sa, E. J., Steward, R. G., Vodacek, A., Blough, N. V., and Ph


Click To View

Additional Books

  • Causal Relationships Vs. Emergent Patter... (by )
  • Dynamics of Nutrients, Total Organic Car... (by )
  • Two Thresholds Determine Climatic Contro... (by )
  • Observation-based Modelling of Permafros... (by )
  • Mass, Nutrients and Oxygen Budgets for t... (by )
  • Seasonality of Co2 in Coastal Oceans Alt... (by )
  • Geophysical and Geochemical Signatures o... (by )
  • Rapid Accretion of Dissolved Organic Car... (by )
  • Root Growth of Lotus Corniculatus Intera... (by )
  • Relationships Between Burned Area, Fores... (by )
  • Lunar Periodicity in the Shell Flux of S... (by )
  • Carbon Exchange Between the Atmosphere a... (by )
Scroll Left
Scroll Right


Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.