Articles | Volume 17, issue 24
https://doi.org/10.5194/bg-17-6271-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-17-6271-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
14 Dec 2020
Research article |
| 14 Dec 2020
| 14 Dec 2020
Potential bioavailability of organic matter from atmospheric particles to marine heterotrophic bacteria
Kahina Djaoudi
CORRESPONDING AUTHOR
Aix-Marseille Univ., Université de Toulon, CNRS, IRD, MIO UM 110,
13288, Marseille, France
Molecular and Cellular Biology, The University of Arizona, Tucson,
USA
France Van Wambeke
Aix-Marseille Univ., Université de Toulon, CNRS, IRD, MIO UM 110,
13288, Marseille, France
Aude Barani
Aix-Marseille Univ., Université de Toulon, CNRS, IRD, MIO UM 110,
13288, Marseille, France
Nagib Bhairy
Aix-Marseille Univ., Université de Toulon, CNRS, IRD, MIO UM 110,
13288, Marseille, France
Servanne Chevaillier
LISA, UMR7583, Université de Paris, Université
Paris-Est-Créteil, Institut Pierre Simon Laplace (IPSL), Créteil,
France
Karine Desboeufs
LISA, UMR7583, Université de Paris, Université
Paris-Est-Créteil, Institut Pierre Simon Laplace (IPSL), Créteil,
France
Sandra Nunige
Aix-Marseille Univ., Université de Toulon, CNRS, IRD, MIO UM 110,
13288, Marseille, France
Mohamed Labiadh
IRA (Institut des Régions Arides) de Médenine, El
Fjé4119, Médenine, Tunisia
Thierry Henry des Tureaux
iEES Paris (Institut d'Ecologie et des Sciences de l'Environnement
de Paris), UMR IRD 242, Université Paris Est Créteil–Sorbonne
Université–CNRS–INRA–Université de Paris, 93143 Bondy,
France
Dominique Lefèvre
Aix-Marseille Univ., Université de Toulon, CNRS, IRD, MIO UM 110,
13288, Marseille, France
Amel Nouara
Aix-Marseille Univ., Université de Toulon, CNRS, IRD, MIO UM 110,
13288, Marseille, France
Christos Panagiotopoulos
Aix-Marseille Univ., Université de Toulon, CNRS, IRD, MIO UM 110,
13288, Marseille, France
Marc Tedetti
Aix-Marseille Univ., Université de Toulon, CNRS, IRD, MIO UM 110,
13288, Marseille, France
Elvira Pulido-Villena
Aix-Marseille Univ., Université de Toulon, CNRS, IRD, MIO UM 110,
13288, Marseille, France
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Céline Ridame, Julie Dinasquet, Søren Hallstrøm, Estelle Bigeard, Lasse Riemann, France Van Wambeke, Matthieu Bressac, Elvira Pulido-Villena, Vincent Taillandier, Fréderic Gazeau, Antonio Tovar-Sanchez, Anne-Claire Baudoux, and Cécile Guieu
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Roxane Tzortzis, Andrea M. Doglioli, Stéphanie Barrillon, Anne A. Petrenko, Francesco d'Ovidio, Lloyd Izard, Melilotus Thyssen, Ananda Pascual, Bàrbara Barceló-Llull, Frédéric Cyr, Marc Tedetti, Nagib Bhairy, Pierre Garreau, Franck Dumas, and Gérald Gregori
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Matthieu Bressac, Thibaut Wagener, Nathalie Leblond, Antonio Tovar-Sánchez, Céline Ridame, Vincent Taillandier, Samuel Albani, Sophie Guasco, Aurélie Dufour, Stéphanie H. M. Jacquet, François Dulac, Karine Desboeufs, and Cécile Guieu
Biogeosciences, 18, 6435–6453, https://doi.org/10.5194/bg-18-6435-2021, https://doi.org/10.5194/bg-18-6435-2021, 2021
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Yangjunjie Xu-Yang, Rémi Losno, Fabrice Monna, Jean-Louis Rajot, Mohamed Labiadh, Gilles Bergametti, and Béatrice Marticorena
Atmos. Meas. Tech., 14, 7657–7680, https://doi.org/10.5194/amt-14-7657-2021, https://doi.org/10.5194/amt-14-7657-2021, 2021
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Stéphanie H. M. Jacquet, Christian Tamburini, Marc Garel, Aurélie Dufour, France Van Vambeke, Frédéric A. C. Le Moigne, Nagib Bhairy, and Sophie Guasco
Biogeosciences, 18, 5891–5902, https://doi.org/10.5194/bg-18-5891-2021, https://doi.org/10.5194/bg-18-5891-2021, 2021
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We compared carbon remineralization rates (MRs) in the western and central Mediterranean Sea in late spring during the PEACETIME cruise, as assessed using the barium tracer. We reported higher and deeper (up to 1000 m depth) MRs in the western basin, potentially sustained by an additional particle export event driven by deep convection. The central basin is the site of a mosaic of blooming and non-blooming water masses and showed lower MRs that were restricted to the upper mesopelagic layer.
Elvira Pulido-Villena, Karine Desboeufs, Kahina Djaoudi, France Van Wambeke, Stéphanie Barrillon, Andrea Doglioli, Anne Petrenko, Vincent Taillandier, Franck Fu, Tiphanie Gaillard, Sophie Guasco, Sandra Nunige, Sylvain Triquet, and Cécile Guieu
Biogeosciences, 18, 5871–5889, https://doi.org/10.5194/bg-18-5871-2021, https://doi.org/10.5194/bg-18-5871-2021, 2021
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We report on phosphorus dynamics in the surface layer of the Mediterranean Sea. Highly sensitive phosphate measurements revealed vertical gradients above the phosphacline. The relative contribution of diapycnal fluxes to total external supply of phosphate to the mixed layer decreased towards the east, where atmospheric deposition dominated. Taken together, external sources of phosphate contributed little to total supply, which was mainly sustained by enzymatic hydrolysis of organic phosphorus.
France Van Wambeke, Vincent Taillandier, Karine Desboeufs, Elvira Pulido-Villena, Julie Dinasquet, Anja Engel, Emilio Marañón, Céline Ridame, and Cécile Guieu
Biogeosciences, 18, 5699–5717, https://doi.org/10.5194/bg-18-5699-2021, https://doi.org/10.5194/bg-18-5699-2021, 2021
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Simultaneous in situ measurements of (dry and wet) atmospheric deposition and biogeochemical stocks and fluxes in the sunlit waters of the open Mediterranean Sea revealed complex physical and biological processes occurring within the mixed layer. Nitrogen (N) budgets were computed to compare the sources and sinks of N in the mixed layer. The transitory effect observed after a wet dust deposition impacted the microbial food web down to the deep chlorophyll maximum.
Frédéric Gazeau, France Van Wambeke, Emilio Marañón, Maria Pérez-Lorenzo, Samir Alliouane, Christian Stolpe, Thierry Blasco, Nathalie Leblond, Birthe Zäncker, Anja Engel, Barbara Marie, Julie Dinasquet, and Cécile Guieu
Biogeosciences, 18, 5423–5446, https://doi.org/10.5194/bg-18-5423-2021, https://doi.org/10.5194/bg-18-5423-2021, 2021
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Our study shows that the impact of dust deposition on primary production depends on the initial composition and metabolic state of the tested community and is constrained by the amount of nutrients added, to sustain both the fast response of heterotrophic prokaryotes and the delayed one of phytoplankton. Under future environmental conditions, heterotrophic metabolism will be more impacted than primary production, therefore reducing the capacity of surface waters to sequester anthropogenic CO2.
Frédéric Gazeau, Céline Ridame, France Van Wambeke, Samir Alliouane, Christian Stolpe, Jean-Olivier Irisson, Sophie Marro, Jean-Michel Grisoni, Guillaume De Liège, Sandra Nunige, Kahina Djaoudi, Elvira Pulido-Villena, Julie Dinasquet, Ingrid Obernosterer, Philippe Catala, and Cécile Guieu
Biogeosciences, 18, 5011–5034, https://doi.org/10.5194/bg-18-5011-2021, https://doi.org/10.5194/bg-18-5011-2021, 2021
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This paper shows that the impacts of Saharan dust deposition in different Mediterranean basins are as strong as those observed in coastal waters but differed substantially between the three tested stations, differences attributed to variable initial metabolic states. A stronger impact of warming and acidification on mineralization suggests a decreased capacity of Mediterranean surface communities to sequester CO2 following the deposition of atmospheric particles in the coming decades.
Evelyn Freney, Karine Sellegri, Alessia Nicosia, Leah R. Williams, Matteo Rinaldi, Jonathan T. Trueblood, André S. H. Prévôt, Melilotus Thyssen, Gérald Grégori, Nils Haëntjens, Julie Dinasquet, Ingrid Obernosterer, France Van Wambeke, Anja Engel, Birthe Zäncker, Karine Desboeufs, Eija Asmi, Hilkka Timonen, and Cécile Guieu
Atmos. Chem. Phys., 21, 10625–10641, https://doi.org/10.5194/acp-21-10625-2021, https://doi.org/10.5194/acp-21-10625-2021, 2021
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In this work, we present observations of the organic aerosol content in primary sea spray aerosols (SSAs) continuously generated along a 5-week cruise in the Mediterranean. This information is combined with seawater biogeochemical properties also measured continuously along the ship track to develop a number of parametrizations that can be used in models to determine SSA organic content in oligotrophic waters that represent 60 % of the oceans from commonly measured seawater variables.
Matthieu Roy-Barman, Lorna Foliot, Eric Douville, Nathalie Leblond, Fréderic Gazeau, Matthieu Bressac, Thibaut Wagener, Céline Ridame, Karine Desboeufs, and Cécile Guieu
Biogeosciences, 18, 2663–2678, https://doi.org/10.5194/bg-18-2663-2021, https://doi.org/10.5194/bg-18-2663-2021, 2021
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The release of insoluble elements such as aluminum (Al), iron (Fe), rare earth elements (REEs), thorium (Th) and protactinium (Pa) when Saharan dust falls over the Mediterranean Sea was studied during tank experiments under present and future climate conditions. Each element exhibited different dissolution kinetics and dissolution fractions (always lower than a few percent). Changes in temperature and/or pH under greenhouse conditions lead to a lower Th release and a higher light REE release.
Philippe Massicotte, Rainer M. W. Amon, David Antoine, Philippe Archambault, Sergio Balzano, Simon Bélanger, Ronald Benner, Dominique Boeuf, Annick Bricaud, Flavienne Bruyant, Gwenaëlle Chaillou, Malik Chami, Bruno Charrière, Jing Chen, Hervé Claustre, Pierre Coupel, Nicole Delsaut, David Doxaran, Jens Ehn, Cédric Fichot, Marie-Hélène Forget, Pingqing Fu, Jonathan Gagnon, Nicole Garcia, Beat Gasser, Jean-François Ghiglione, Gaby Gorsky, Michel Gosselin, Priscillia Gourvil, Yves Gratton, Pascal Guillot, Hermann J. Heipieper, Serge Heussner, Stanford B. Hooker, Yannick Huot, Christian Jeanthon, Wade Jeffrey, Fabien Joux, Kimitaka Kawamura, Bruno Lansard, Edouard Leymarie, Heike Link, Connie Lovejoy, Claudie Marec, Dominique Marie, Johannie Martin, Jacobo Martín, Guillaume Massé, Atsushi Matsuoka, Vanessa McKague, Alexandre Mignot, William L. Miller, Juan-Carlos Miquel, Alfonso Mucci, Kaori Ono, Eva Ortega-Retuerta, Christos Panagiotopoulos, Tim Papakyriakou, Marc Picheral, Louis Prieur, Patrick Raimbault, Joséphine Ras, Rick A. Reynolds, André Rochon, Jean-François Rontani, Catherine Schmechtig, Sabine Schmidt, Richard Sempéré, Yuan Shen, Guisheng Song, Dariusz Stramski, Eri Tachibana, Alexandre Thirouard, Imma Tolosa, Jean-Éric Tremblay, Mickael Vaïtilingom, Daniel Vaulot, Frédéric Vaultier, John K. Volkman, Huixiang Xie, Guangming Zheng, and Marcel Babin
Earth Syst. Sci. Data, 13, 1561–1592, https://doi.org/10.5194/essd-13-1561-2021, https://doi.org/10.5194/essd-13-1561-2021, 2021
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The MALINA oceanographic expedition was conducted in the Mackenzie River and the Beaufort Sea systems. The sampling was performed across seven shelf–basin transects to capture the meridional gradient between the estuary and the open ocean. The main goal of this research program was to better understand how processes such as primary production are influencing the fate of organic matter originating from the surrounding terrestrial landscape during its transition toward the Arctic Ocean.
France Van Wambeke, Elvira Pulido, Philippe Catala, Julie Dinasquet, Kahina Djaoudi, Anja Engel, Marc Garel, Sophie Guasco, Barbara Marie, Sandra Nunige, Vincent Taillandier, Birthe Zäncker, and Christian Tamburini
Biogeosciences, 18, 2301–2323, https://doi.org/10.5194/bg-18-2301-2021, https://doi.org/10.5194/bg-18-2301-2021, 2021
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Michaelis–Menten kinetics were determined for alkaline phosphatase, aminopeptidase and β-glucosidase in the Mediterranean Sea. Although the ectoenzymatic-hydrolysis contribution to heterotrophic prokaryotic needs was high in terms of N, it was low in terms of C. This study points out the biases in interpretation of the relative differences in activities among the three tested enzymes in regard to the choice of added concentrations of fluorogenic substrates.
Stéphanie H. M. Jacquet, Dominique Lefèvre, Christian Tamburini, Marc Garel, Frédéric A. C. Le Moigne, Nagib Bhairy, and Sophie Guasco
Biogeosciences, 18, 2205–2212, https://doi.org/10.5194/bg-18-2205-2021, https://doi.org/10.5194/bg-18-2205-2021, 2021
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We present new data concerning the relation between biogenic barium (Baxs, a tracer of carbon remineralization at mesopelagic depths), O2 consumption and prokaryotic heterotrophic production (PHP) in the Mediterranean Sea. The purpose of this paper is to improve our understanding of the relation between Baxs, PHP and O2 and to test the validity of the Dehairs transfer function in the Mediterranean Sea. This relation has never been tested in the Mediterranean Sea.
Emilio Marañón, France Van Wambeke, Julia Uitz, Emmanuel S. Boss, Céline Dimier, Julie Dinasquet, Anja Engel, Nils Haëntjens, María Pérez-Lorenzo, Vincent Taillandier, and Birthe Zäncker
Biogeosciences, 18, 1749–1767, https://doi.org/10.5194/bg-18-1749-2021, https://doi.org/10.5194/bg-18-1749-2021, 2021
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The concentration of chlorophyll is commonly used as an indicator of the abundance of photosynthetic plankton (phytoplankton) in lakes and oceans. Our study investigates why a deep chlorophyll maximum, located near the bottom of the upper, illuminated layer develops in the Mediterranean Sea. We find that the acclimation of cells to low light is the main mechanism involved and that this deep maximum represents also a maximum in the biomass and carbon fixation activity of phytoplankton.
Caroline Ulses, Claude Estournel, Marine Fourrier, Laurent Coppola, Fayçal Kessouri, Dominique Lefèvre, and Patrick Marsaleix
Biogeosciences, 18, 937–960, https://doi.org/10.5194/bg-18-937-2021, https://doi.org/10.5194/bg-18-937-2021, 2021
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We analyse the seasonal cycle of O2 and estimate an annual O2 budget in the north-western Mediterranean deep-convection region, using a numerical model. We show that this region acts as a large sink of atmospheric O2 and as a major source of O2 for the western Mediterranean Sea. The decrease in the deep convection intensity predicted in recent projections may have important consequences on the overall uptake of O2 in the Mediterranean Sea and on the O2 exchanges with the Atlantic Ocean.
Katixa Lajaunie-Salla, Frédéric Diaz, Cathy Wimart-Rousseau, Thibaut Wagener, Dominique Lefèvre, Christophe Yohia, Irène Xueref-Remy, Brian Nathan, Alexandre Armengaud, and Christel Pinazo
Geosci. Model Dev., 14, 295–321, https://doi.org/10.5194/gmd-14-295-2021, https://doi.org/10.5194/gmd-14-295-2021, 2021
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A biogeochemical model of planktonic food webs including a carbonate balance module is applied in the Bay of Marseille (France) to represent the carbon marine cycle expected to change in the future owing to significant increases in anthropogenic emissions of CO2. The model correctly simulates the ranges and seasonal dynamics of most variables of the carbonate system (pH). This study shows that external physical forcings have an important impact on the carbonate equilibrium in this coastal area.
Danitza Klopper, Paola Formenti, Andreas Namwoonde, Mathieu Cazaunau, Servanne Chevaillier, Anaïs Feron, Cécile Gaimoz, Patrick Hease, Fadi Lahmidi, Cécile Mirande-Bret, Sylvain Triquet, Zirui Zeng, and Stuart J. Piketh
Atmos. Chem. Phys., 20, 15811–15833, https://doi.org/10.5194/acp-20-15811-2020, https://doi.org/10.5194/acp-20-15811-2020, 2020
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The chemical composition of aerosol particles is very important as it determines to which extent they can affect the Earth's climate by acting with solar light and modifying the properties of clouds. The South Atlantic region is a remote and under-explored region to date where these effects could be important. The measurements presented in this paper consist in the analysis of samples collected at a coastal site in Namibia. The first long-term source apportionment is presented and discussed.
Cécile Guieu, Fabrizio D'Ortenzio, François Dulac, Vincent Taillandier, Andrea Doglioli, Anne Petrenko, Stéphanie Barrillon, Marc Mallet, Pierre Nabat, and Karine Desboeufs
Biogeosciences, 17, 5563–5585, https://doi.org/10.5194/bg-17-5563-2020, https://doi.org/10.5194/bg-17-5563-2020, 2020
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We describe here the objectives and strategy of the PEACETIME project and cruise, dedicated to dust deposition and its impacts in the Mediterranean Sea. Our strategy to go a step further forward than in previous approaches in understanding these impacts by catching a real deposition event at sea is detailed. We summarize the work performed at sea, the type of data acquired and their valorization in the papers published in the special issue.
Clarissa Baldo, Paola Formenti, Sophie Nowak, Servanne Chevaillier, Mathieu Cazaunau, Edouard Pangui, Claudia Di Biagio, Jean-Francois Doussin, Konstantin Ignatyev, Pavla Dagsson-Waldhauserova, Olafur Arnalds, A. Robert MacKenzie, and Zongbo Shi
Atmos. Chem. Phys., 20, 13521–13539, https://doi.org/10.5194/acp-20-13521-2020, https://doi.org/10.5194/acp-20-13521-2020, 2020
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We showed that Icelandic dust has a fundamentally different chemical and mineralogical composition from low-latitude dust. In particular, magnetite is as high as 1 %–2 % of the total dust mass. Our results suggest that Icelandic dust may have an important impact on the radiation balance in the subpolar and polar regions.
Cited articles
Anderson, T. R. and Turley, C. M.: Low bacterial growth efficiency in the oligotrophic eastern Mediterranean Sea: a modelling analysis, J. Plankton Res., 25, 1011–1019, https://doi.org/10.1093/plankt/25.9.1011, 2003.
Alves, C., Vicente, A., Pio, C., Kiss, G., Hoffer, A., Decesari, S.,
Prevôt, A. S., Minguillón, M. C., Querol, X., and Hillamo, R.:
Organic compounds in aerosols from selected European sites – Biogenic versus
anthropogenic sources, Atmos. Environ., 59, 243–255, 2012.
Amato, F., Alastuey, A., Karanasiou, A., Lucarelli, F., Nava, S., Calzolai, G., Severi, M., Becagli, S., Gianelle, V. L., Colombi, C., Alves, C., Custódio, D., Nunes, T., Cerqueira, M., Pio, C., Eleftheriadis, K., Diapouli, E., Reche, C., Minguillón, M. C., Manousakas, M.-I., Maggos, T., Vratolis, S., Harrison, R. M., and Querol, X.: AIRUSE-LIFE+: a harmonized PM speciation and source apportionment in five southern European cities, Atmos. Chem. Phys., 16, 3289–3309, https://doi.org/10.5194/acp-16-3289-2016, 2016.
Ammermann, J. W., Furhman, J. A., Hagström, A., and Azam, F.:
Bacterioplankton growth in sea water: I. Growth kinetics and cellular
characteristics in sea water cultures, Mar. Ecol.-Prog. Ser., 18, 31–39,
1984.
Aminot, A. and Kerouel., R.: Dosage automatique des nutriments dans les eaux marines. Méthodes en flux continu, MEDD Editions Quae, Brest, 188 pp., 2007.
Azam, F.: Microbial Control of Oceanic Carbon Flux: The Plot Thickens,
Science, 280, 694–696, https://doi.org/10.1126/science.280.5364.694, 1998.
Azam, F., Fenchel, T., Field, J. G., Gray, J., Meyer-Reil, L., and
Thingstad, F.: The ecological role of water-column microbes in the sea,
Mar. Ecol.-Prog. Ser., 10, 257–263, 1983.
Barhoumi, B., Castro-Jiménez, J., Guigue, C., Goutx, M.,
Sempéré, R., Derouiche, A., Achour, A., Touil, S., Driss, M. R., and
Tedetti, M.: Levels and risk assessment of hydrocarbons and organochlorines
in aerosols from a North African coastal city (Bizerte, Tunisia),
Environ. Pollut., 240, 422–431, 2018.
Biddanda, B., Opsahl, S., and Benner, R.: Plankton respiration and carbon
flux through bacterioplankton on the Louisiana shelf, Limnol. Oceanogr., 39,
1259–1275, 1994.
Browning, T. J., Achterberg, E. P., Yong, J. C., Rapp, I., Utermann, C.,
Engel, A., and Moore, C. M.: Iron limitation of microbial phosphorus
acquisition in the tropical North Atlantic, Nat. Commun., 8, 15465,
https://doi.org/10.1038/ncomms15465, 2017.
Bif, M. B., Hansell, D. A., and Popendorf, K. J.: Controls on the fate of
dissolved organic carbon under contrasting upwelling conditions, Front. Mar. Sci., 5, 463, https://doi.org/10.3389/Fmars.2018.00463, 2018.
Bunse, C. and Pinhassi, J.: Marine bacterioplankton seasonal succession
dynamics, Trends Microbiol., 25, 494–505, 2017.
Carlson, A.: Production and Removal Processes, in: Biogeochemistry of dissolved organic matter, 1st Edn., Hansell, D. and Carlson, A., Academic Press, London, 91–151, 2002.
Carlson, C. A. and Ducklow, H. W.: Growth of bacterioplankton and
consumption of dissolved organic carbon in the Sargasso Sea, Aquat.
Microb. Ecol., 10, 69–85, 1996.
Carlson, C. A., Ducklow, H. W., and Michaels, A. F.: annual flux of
dissolved organic-carbon from the euphotic zone in the northwestern Sargasso
Sea, Nature, 371, 405–408, https://doi.org/10.1038/371405a0, 1994.
Cavalli, F., Viana, M., Yttri, K. E., Genberg, J., and Putaud, J.-P.: Toward a standardised thermal-optical protocol for measuring atmospheric organic and elemental carbon: the EUSAAR protocol, Atmos. Meas. Tech., 3, 79–89, https://doi.org/10.5194/amt-3-79-2010, 2010.
Conen, F., Morris, C. E., Leifeld, J., Yakutin, M. V., and Alewell, C.: Biological residues define the ice nucleation properties of soil dust, Atmos. Chem. Phys., 11, 9643–9648, https://doi.org/10.5194/acp-11-9643-2011, 2011.
Dall'Osto, M., Harrison, R. M., Highwood, E. J., O'Dowd, C., Ceburnis, D.,
Querol, X., and Achterberg, E. P.: Variation of the mixing state of Saharan
dust particles with atmospheric transport, Atmos. Environ., 44,
3135–3146, 2010.
De Leeuw, G., Guieu, C., Arneth, A., Bellouin, N., Bopp, L., Boyd, P. W., van der Gon, H. A. D., Desboeufs, K. V., Dulac, F., and Facchini, M. C.: Ocean–atmosphere interactions of particles, in: Ocean-Atmosphere Interactions of Gases and Particles, Springer, Berlin, 171–246, 2014.
del Giorgio, P. A. and Cole, J. J.: Bacterial growth efficiency in natural
aquatic systems, Annu. Rev. Ecol. Syst., 29, 503–541,
https://doi.org/10.1146/annurev.ecolsys.29.1.503, 1998.
del Giorgio, P. A., Cole, J. J., and Cimbleris, A.: Respiration rates in
bacteria exceed phytoplankton production in unproductive aquatic systems,
Nature, 385, 148–151, 1997.
Djaoudi, K., Van Wambeke, F., Barani, A., Hélias-Nunige, S., Sempere,
R., and Pulido-Villena, E.: Atmospheric fluxes of soluble organic C, N, and
P to the Mediterranean Sea: Potential biogeochemical implications in the
surface layer, Prog. Oceanogr., 163, 59–69, 2018.
Duce, R. A., Liss, P. S., Merrill, J. T., Atlas, E. L., Buat-Menard, P., Hicks, B. B., Miller, J. M., Prospero, J. M., Arimoto, R., Church, T. M., Ellis, W., Galloway, J. N., Hansen, L., Jickells, T. D., Knap, A. H., Reinhardt, K. H., Schneider, B., Soudine, A., Tokos, J. J., Tsunogai, S., Wollast, R., and Zhou, M.: The atmospheric input of trace species to the world ocean, Global Biogeochem. Cy., 5, 193–259, https://doi.org/10.1029/91GB01778, 1991.
Duce, R. A., LaRoche, J., Altieri, K., Arrigo, K. R., Baker, A. R., Capone,
D. G., Cornell, S., Dentener, F., Galloway, J., Ganeshram, R. S., Geider, R.
J., Jickells, T., Kuypers, M. M., Langlois, R., Liss, P. S., Liu, S. M.,
Middelburg, J. J., Moore, C. M., Nickovic, S., Oschlies, A., Pedersen, T.,
Prospero, J., Schlitzer, R., Seitzinger, S., Sorensen, L. L., Uematsu, M.,
Ulloa, O., Voss, M., Ward, B., and Zamora, L.: Impacts of atmospheric
anthropogenic nitrogen on the open ocean, Science, 320, 893–897,
https://doi.org/10.1126/science.1150369, 2008.
Eglinton, T. I., Eglinton, G., Dupont, L., Sholkovitz, E., Montluçon,
D., and Reddy, C.: Composition, age, and provenance of organic matter in NW
African dust over the Atlantic Ocean, Geochem. Geophy. Geosy.,
3, 1–27, 2002.
Falkovich, A. H., Schkolnik, G., Ganor, E., and Rudich, Y.: Adsorption of
organic compounds pertinent to urban environments onto mineral dust
particles, J. Geophys. Res.-Atmos., 109, D02208,
https://doi.org/10.1029/2003jd003919, 2004.
Fenchel, T. and Blackburn, T. H.: Bacteria and mineral cycling, Academic
Press, Inc. (London) Ltd., 1979.
Fuhrman, J.: Bacterioplankton Roles in Cycling of Organic Matter: The Microbial Food Web, in: Primary Productivity and Biogeochemical Cycles in the Sea, edited by: Falkowski, P. G., Woodhead, A. D., and Vivirito, K., Environmental Science Research, Vol. 43, Springer, Boston, MA, https://doi.org/10.1007/978-1-4899-0762-2_20, 1992.
Galletti, Y., Becagli, S., di Sarra, A., Gonnelli, M., Pulido-Villena, E., Sferlazzo, D. M., Traversi, R., Vestri, S., and Santinelli, C.: Atmospheric deposition of organic matter at a remote site in the central Mediterranean Sea: implications for the marine ecosystem, Biogeosciences, 17, 3669–3684, https://doi.org/10.5194/bg-17-3669-2020, 2020.
Gasol, J. M. and Kirchman, D. L.: The evolution of microbial ecology of the ocean, in: Microbial ecology of the oceans, edited by: Gasol, J. M., Kirchman, D. L., 4rd Edn., John Wiley & Sons, Hoboken, NJ, USA, 528 pp., 2018.
Goldman, J. C., Caron, D. A., and Dennett, M. R.: Regulation of gross growth efficiency and ammonium regeneration in bacteria by substrate C : N ratio 1, Limnol. Oceanogr., 32, 1239–1252, 1987.
Guieu, C., Aumont, O., Paytan, A., Bopp, L., Law, C. S., Mahowald, N.,
Achterberg, E. P., Maranon, E., Salihoglu, B., Crise, A., Wagener, T.,
Herut, B., Desboeufs, K., Kanakidou, M., Olgun, N., Peters, F.,
Pulido-Villena, E., Tovar-Sanchez, A., and Volker, C.: The significance of
the episodic nature of atmospheric deposition to Low Nutrient Low
Chlorophyll regions, Global Biogeochem. Cy., 28, 1179–1198,
https://doi.org/10.1002/2014gb004852, 2014.
Guyennon, A., Baklouti, M., Diaz, F., Palmieri, J., Beuvier, J., Lebaupin-Brossier, C., Arsouze, T., Béranger, K., Dutay, J.-C., and Moutin, T.: New insights into the organic carbon export in the Mediterranean Sea from 3-D modeling, Biogeosciences, 12, 7025–7046, https://doi.org/10.5194/bg-12-7025-2015, 2015.
Hansell, D. A.: Dissolved organic carbon reference material program, EOS
T. Am. Geophys. Un., 86, 318–318, 2005.
Hansell, D. A., Carlson, C. A., Repeta, D. J., and Schlitzer, R.: Dissolved
organic matter in the ocean a controversy stimulates new insights,
Oceanography, 22, 202–211, 2009.
Herut, B., Rahav, E., Tsagaraki, T. M., Giannakourou, A., Tsiola, A.,
Psarra, S., Lagaria, A., Papageorgiou, N., Mihalopoulos, N., Theodosi, C.
N., Violaki, K., Stathopoulou, E., Scoullos, M., Krom, M. D., Stockdale, A.,
Shi, Z., Berman-Frank, I., Meador, T. B., Tanaka, T., and Paraskevi, P.: The
Potential Impact of Saharan Dust and Polluted Aerosols on Microbial
Populations in the East Mediterranean Sea, an Overview of a Mesocosm
Experimental Approach, Front. Mar. Sci., 3, 226,
https://doi.org/10.3389/fmars.2016.00226, 2016.
Hoppe, H.-G.: Significance of exoenzymatic activities in the ecology of
brackish water: measurements by means of methylumbelliferyl-substrates,
Mar. Ecol.-Prog. Ser., 11, 299–308, 1983.
Jaffrezo, J.-L., Aymoz, G., Delaval, C., and Cozic, J.: Seasonal variations of the water soluble organic carbon mass fraction of aerosol in two valleys of the French Alps, Atmos. Chem. Phys., 5, 2809–2821, https://doi.org/10.5194/acp-5-2809-2005, 2005.
Jiao, N., Herndl, G. J., Hansell, D. A., Benner, R., Kattner, G., Wilhelm,
S. W., Kirchman, D. L., Weinbauer, M. G., Luo, T. W., Chen, F., and Azam,
F.: Microbial production of recalcitrant dissolved organic matter: long-term
carbon storage in the global ocean, Nat. Rev. Microbiol., 8, 593–599,
https://doi.org/10.1038/nrmicro2386, 2010.
Jickells, T. D., An, Z. S., Andersen, K. K., Baker, A. R., Bergametti, G.,
Brooks, N., Cao, J. J., Boyd, P. W., Duce, R. A., Hunter, K. A., Kawahata,
H., Kubilay, N., laRoche, J., Liss, P. S., Mahowald, N., Prospero, J. M.,
Ridgwell, A. J., Tegen, I., and Torres, R.: Global Iron Connections Between
Desert Dust, Ocean Biogeochemistry, and Climate, Science, 308, 67–71,
https://doi.org/10.1126/science.1105959, 2005.
Jordi, A., Basterretxea, G., Tovar-Sanchez, A., Alastuey, A., and Querol,
X.: Copper aerosols inhibit phytoplankton growth in the Mediterranean Sea,
P. Natl. Acad. Sci. USA, 109, 21246–21249, https://doi.org/10.1073/pnas.1207567110,
2012.
Kanakidou, M., Duce, R. A., Prospero, J. M., Baker, A. R., Benitez-Nelson,
C., Dentener, F. J., Hunter, K. A., Liss, P. S., Mahowald, N., Okin, G. S.,
Sarin, M., Tsigaridis, K., Uematsu, M., Zamora, L. M., and Zhu, T.:
Atmospheric fluxes of organic N and P to the global ocean, Global
Biogeochem. Cy., 26, GB3026, https://doi.org/10.1029/2011gb004277, 2012.
Kanakidou, M., Myriokefalitakis, S., and Tsigaridis, K.: Aerosols in
atmospheric chemistry and biogeochemical cycles of nutrients, Environ.
Res. Lett., 13, 063004, https://doi.org/10.1088/1748-9326/Aabcdb, 2018.
Kirchman, D. L.: Processes in Microbial Ecology, 2nd Edn., Vol. 1,
Oxford University Press, Oxford, UK, https://doi.org/10.1093/oso/9780198789406.001.0001,
2018.
Kirchman, D. L., Ducklow, H. W., and Mitchell, R.: Estimates of bacterial
growth from changes in uptake rates and biomass, Appl. Environ. Microb.,
44, 1296–1307, 1982.
Kirchman, D. L., Keil, R. G., Simon, M., and Welschmeyer, N. A.: Biomass and
production of heterotrophic bacterioplancton in the oceanic Sub-Arctic
Pacific, Deep-Sea Res. Pt. I, 40,
967–988, https://doi.org/10.1016/0967-0637(93)90084-g, 1993.
Leaitch, W. R., Macdonald, A. M., Anlauf, K. G., Liu, P. S. K., Toom-Sauntry, D., Li, S.-M., Liggio, J., Hayden, K., Wasey, M. A., Russell, L. M., Takahama, S., Liu, S., van Donkelaar, A., Duck, T., Martin, R. V., Zhang, Q., Sun, Y., McKendry, I., Shantz, N. C., and Cubison, M.: Evidence for Asian dust effects from aerosol plume measurements during INTEX-B 2006 near Whistler, BC, Atmos. Chem. Phys., 9, 3523–3546, https://doi.org/10.5194/acp-9-3523-2009, 2009.
Lechtenfeld, O. J., Hertkorn, N., Shen, Y., Witt, M., and Benner, R.: Marine
sequestration of carbon in bacterial metabolites, Nat. Commun., 6, 6711,
https://doi.org/10.1038/ncomms7711, 2015.
Letelier, R. M., Björkman, K. M., Church, M. J., Hamilton, D. S.,
Mahowald, N. M., Scanza, R. A., Schneider, N., White, A. E., and Karl, D.
M.: Climate-driven oscillation of phosphorus and iron limitation in the
North Pacific Subtropical Gyre, P. Natl. Acad.
Sci. USA, 116, 12720–12728, 2019.
Letscher, R. T. and Moore, J. K.: Preferential remineralization of
dissolved organic phosphorus and non-Redfield DOM dynamics in the global
ocean: Impacts on marine productivity, nitrogen fixation, and carbon export,
Global Biogeochem. Cy., 29, 325–340, https://doi.org/10.1002/2014gb004904, 2015.
Li, C.-T., Zhuang, H.-K., Hsieh, L.-T., Lee, W.-J., and Tsao, M.-C.: PAH
emission from the incineration of three plastic wastes, Environ.
Int., 27, 61–67, 2001.
Lønborg, C. and Álvarez-Salgado, X. A.: Recycling versus export of
bioavailable dissolved organic matter in the coastal ocean and efficiency of
the continental shelf pump, Global Biogeochem. Cy., 26, GB3018, https://doi.org/10.1029/2012GB004353, 2012.
López-Sandoval, D. C., Fernández, A., and Marañón, E.: Dissolved and particulate primary production along a longitudinal gradient in the Mediterranean Sea, Biogeosciences, 8, 815–825, https://doi.org/10.5194/bg-8-815-2011, 2011.
Marañón, E., Fernández, A., Mouriño-Carballido, B.,
Martínez-GarcÍa, S., Teira, E., Cermeño, P., Chouciño, P.,
Huete-Ortega, M., Fernández, E., Calvo-DÍaz, A., Morán, X. A.
G., Bode, A., Moreno-Ostos, E., Varela, M. M., Patey, M. D., and Achterberg,
E. P.: Degree of oligotrophy controls the response of microbial plankton to
Saharan dust, Limnol. Oceanogr., 55, 2339–2352, https://doi.org/10.4319/lo.2010.55.6.2339,
2010.
Marañón, E., Van Wambeke, F., Uitz, J., Boss, E. S., Pérez-Lorenzo, M., Dinasquet, J., Haëntjens, N., Dimier, C., and Taillandier, V.: Deep maxima of phytoplankton biomass, primary production and bacterial production in the Mediterranean Sea during late spring, Biogeosciences Discuss., https://doi.org/10.5194/bg-2020-261, in review, 2020.
Marie, D., Simon, N., Guillou, L., Partensky, F., and Vaulot,
D.: DNA/RNA analysis of phytoplankton by flow cytometry,
in: Current protocols in cytometry, edited by: Robinson, J. P., Darzynkiewicz, Z., Dean, P. N., Dressler, L. G., Rabinovitch, P. S., Stewart, C. C., Tanke, H. J., Wheeless, L. L., John Wiley & Sons, New York, 11–12, https://doi.org/10.1002/0471142956.cy1112s11, 2002.
Marín, I., Nunes, S., Sánchez-Pérez, E. D., Txurruka, E., Antequera, C., Sala, M. M., Marrasé, C., and Peters, F.: Coastal bacterioplankton metabolism is stimulated stronger by anthropogenic aerosols than saharan dust, Front. Mmicrobiol., 8, 2215, https://doi.org/10.3389/fmicb.2017.02215, 2017a.
Marín, I., Nunes, S., Sánchez-Pérez, E. D., Aparicio, F.,
Estrada, M., Marrasé, C., Moreno, T., Wagener, T., Querol, X., and
Peters, F.: Anthropogenic versus mineral aerosols in the stimulation of
microbial planktonic communities in coastal waters of the northwestern
Mediterranean Sea, Sci. Total Environ., 574, 553–568, 2017b.
Markaki, Z., Loye-Pilot, M. D., Violaki, K., Benyahya, L., and Mihalopoulos, N.:
Variability of atmospheric deposition of dissolved nitrogen and phosphorus in the
Mediterranean and possible link to the anomalous seawater N∕P ratio, Mar.
Chem., 120, 187–194, https://doi.org/10.1016/j.marchem.2008.10.005, 2010.
Moran, M. A., Kujawinski, E. B., Stubbins, A., Fatland, R., Aluwihare, L.
I., Buchan, A., Crump, B. C., Dorrestein, P. C., Dyhrman, S. T., and Hess,
N. J.: Deciphering ocean carbon in a changing world, P.
Natl. Acad. Sci. USA, 113, 3143–3151, 2016.
Omar, N. Y. M., Mon, T. C., Rahman, N. A., and Abas, M. R. B.: Distributions
and health risks of polycyclic aromatic hydrocarbons (PAHs) in atmospheric
aerosols of Kuala Lumpur, Malaysia, Sci. Total Environ., 369,
76–81, 2006.
Paris, R., Desboeufs, K. V., Formenti, P., Nava, S., and Chou, C.: Chemical characterisation of iron in dust and biomass burning aerosols during AMMA-SOP0/DABEX: implication for iron solubility, Atmos. Chem. Phys., 10, 4273––4282, https://doi.org/10.5194/acp-10-4273-2010, 2010.
Paytan, A., Mackey, K. R. M., Chen, Y., Lima, I. D., Doney, S. C., Mahowald,
N., Labiosa, R., and Postf, A. F.: Toxicity of atmospheric aerosols on
marine phytoplankton, Proc. Natl. Acad. Sci. USA, 106, 4601–4605,
https://doi.org/10.1073/pnas.0811486106, 2009.
Prospero, J. M., Bullard, J. E., and Hodgkins, R.: High-Latitude Dust Over
the North Atlantic: Inputs from Icelandic Proglacial Dust Storms, Science,
335, 1078–1082, https://doi.org/10.1126/science.1217447, 2012.
Pujo-Pay, M. and Raimbault, P.: Improvement of the wet-oxidation procedure
for simultaneous determination of particulate organic nitrogen and
phosphorus collected on filters, Mar. Ecol.-Prog. Ser., 105,
203–203, 1994.
Pulido-Villena, E., Wagener, T., and Guieu, C.: Bacterial response to dust
pulses in the western Mediterranean: Implications for carbon cycling in the
oligotrophic ocean, Global Biogeochem. Cy., 22, 1–5,
https://doi.org/10.1029/2007GB003091, 2008.
Pulido-Villena, E., Rerolle, V., and Guieu, C.: Transient fertilizing effect
of dust in P-deficient LNLC surface ocean, Geophys. Res. Lett., 37,
1–5, https://doi.org/10.1029/2009gl041415, 2010.
Romera-Castillo, C., Letscher, R. T., and Hansell, D. A.: New nutrients
exert fundamental control on dissolved organic carbon accumulation in the
surface Atlantic Ocean, P. Natl. Acad. Sci. USA,
113, 10497–10502, 2016.
Roshan, S. and DeVries, T.: Efficient dissolved organic carbon production
and export in the oligotrophic ocean, Nat. Commun., 8, 1–8, 2017.
Salma, I., Mészáros, T., and Maenhaut, W.: Mass size distribution of
carbon in atmospheric humic-like substances and water-soluble organic carbon
for an urban environment, J. Aerosol Sci., 56, 53–60, 2013.
Sannigrahi, P., Sullivan, A. P., Weber, R. J., and Ingall, E. D.:
Characterization of water-soluble organic carbon in urban atmospheric
aerosols using solid-state 13C NMR spectroscopy, Environ. Sci.
Technol., 40, 666–672, 2006.
Sipler, R. E. and Bronk, D. A.: Dynamics of dissolved organic nitrogen, in: Biogeochemistry of marine dissolved organic matter, edited by: Hansell, D. and Carlson, A., 2nd Edn., Elsevier, London, 127–232, 2015.
Smith, D. C. and Azam, F.: A simple, economical method for measuring
bacterial protein synthesis rates in seawater using 3H-leucine, Mar. Microb.
Food Webs, 6, 107–114, 1992.
Sullivan, R. C. and Prather, K. A.: Investigations of the diurnal cycle and
mixing state of oxalic acid in individual particles in Asian aerosol
outflow, Environ. Sci. Technol., 41, 8062–8069, 2007.
Theodosi, C., Panagiotopoulos, C., Nouara, A., Zarmpas, P., Nicolaou, P.,
Violaki, K., Kanakidou, M., Sempéré, R., and Mihalopoulos, N.:
Sugars in atmospheric aerosols over the Eastern Mediterranean, Prog.
Oceanogr., 163, 70–81, https://doi.org/10.1016/j.pocean.2017.09.001, 2018.
Tsagaraki, T. M., Herut, B., Rahav, E., Frank, I. R. B., Tsiola, A., Tsapakis, M., Giannakourou, A., Gogou, A., Panagiotopoulos, C., Violaki, K., Psarra, S., Lagaria, A., Christou, E. D., Papageorgiou, N., Zervoudaki, S., de Puelles, M. L. F., Nikolioudakis, N., Meador, T. B., Tanaka, T., Pedrotti, M. L., Krom, M. D., and Pitta, P.: Atmospheric Deposition Effects on Plankton Communities in the Eastern Mediterranean: A Mesocosm Experimental Approach, Front. Mar. Sci., 4, 210,
https://doi.org/10.3389/Fmars.2017.00210, 2017.
Twining, B. S., Baines, S. B., and Fisher, N. S.: Element stoichiometries of
individual plankton cells collected during the Southern Ocean Iron
Experiment (SOFeX), Limnol. Oceanogr., 49, 2115–2128, 2004.
Van Wambeke, F., Christaki, U., and Gaudy, R.: Carbon fluxes from the
microbial food web to mesozooplankton. An approach in the surface layer of a
pelagic area (NW Mediterranean Sea), Oceanol. Acta, 19, 57–66, 1996.
Van Wambeke, F., Pulido, E., Dinasquet, J., Djaoudi, K., Engel, A., Garel, M., Guasco, S., Nunige, S., Taillandier, V., Zäncker, B., and Tamburini, C.: Spatial patterns of biphasic ectoenzymatic kinetics related to biogeochemical properties in the Mediterranean Sea, Biogeosciences Discuss., https://doi.org/10.5194/bg-2020-253, in review, 2020.
Vila-Costa, M., Sebastián, M., Pizarro, M., Cerro-Gálvez, E.,
Lundin, D., Gasol, J. M., and Dachs, J.: Microbial consumption of
organophosphate esters in seawater under phosphorus limited conditions,
Sci. Rep.-UK, 9, 1–11, 2019.
Violaki, K., Bourrin, F., Aubert, D., Kouvarakis, G., Delsaut, N., and
Mihalopoulos, N.: Organic Phosphorus in atmospheric deposition over
Mediterranean Sea: An important missing piece of the P cycle, Prog.
Oceanogr., 163, 50–58, 2018.
Voliotis, A., Prokeš, R., Lammel, G., and Samara, C.: New insights on
humic-like substances associated with wintertime urban aerosols from central
and southern Europe: size-resolved chemical characterization and optical
properties, Atmos. Enviro., 166, 286–299, 2017.
Wu, J. F., Sunda, W., Boyle, E. A., and Karl, D. M.: Phosphate depletion in
the western North Atlantic Ocean, Science, 289, 759–762,
https://doi.org/10.1126/science.289.5480.759, 2000.
Zheng, G., He, K., Duan, F., Cheng, Y., and Ma, Y.: Measurement of humic-like substances in aerosols: A review, Environ. Pollut., 181, 301–314, 2013.
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