Articles | Volume 18, issue 24
https://doi.org/10.5194/bg-18-6377-2021
© Author(s) 2021. 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-18-6377-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Long-distance particle transport to the central Ionian Sea
Léo Berline
CORRESPONDING AUTHOR
Aix Marseille Université, Université de Toulon, CNRS, IRD,
Mediterranean Institute of Oceanography (MIO), 13288, Marseille, France
Andrea Michelangelo Doglioli
Aix Marseille Université, Université de Toulon, CNRS, IRD,
Mediterranean Institute of Oceanography (MIO), 13288, Marseille, France
Anne Petrenko
Aix Marseille Université, Université de Toulon, CNRS, IRD,
Mediterranean Institute of Oceanography (MIO), 13288, Marseille, France
Stéphanie Barrillon
Aix Marseille Université, Université de Toulon, CNRS, IRD,
Mediterranean Institute of Oceanography (MIO), 13288, Marseille, France
Boris Espinasse
Department of Arctic and Marine Biology, UiT The Arctic University of
Norway, Tromsø, Norway
Frederic A. C. Le Moigne
Aix Marseille Université, Université de Toulon, CNRS, IRD,
Mediterranean Institute of Oceanography (MIO), 13288, Marseille, France
François Simon-Bot
Aix Marseille Université, Université de Toulon, CNRS, IRD,
Mediterranean Institute of Oceanography (MIO), 13288, Marseille, France
Melilotus Thyssen
Aix Marseille Université, Université de Toulon, CNRS, IRD,
Mediterranean Institute of Oceanography (MIO), 13288, Marseille, France
François Carlotti
Aix Marseille Université, Université de Toulon, CNRS, IRD,
Mediterranean Institute of Oceanography (MIO), 13288, Marseille, France
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In order to improve Sargassum drift forecasting in the Caribbean area, drift models can be forced by higher-resolution ocean currents. To this goal a 3 km resolution regional ocean model has been developed. Its assessment is presented with a particular focus on the reproduction of fine structures representing key features of the Caribbean region dynamics and Sargassum transport. The simulated propagation of a North Brazil Current eddy and its dissipation was found to be quite realistic.
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Rainer Kiko, Marc Picheral, David Antoine, Marcel Babin, Léo Berline, Tristan Biard, Emmanuel Boss, Peter Brandt, Francois Carlotti, Svenja Christiansen, Laurent Coppola, Leandro de la Cruz, Emilie Diamond-Riquier, Xavier Durrieu de Madron, Amanda Elineau, Gabriel Gorsky, Lionel Guidi, Helena Hauss, Jean-Olivier Irisson, Lee Karp-Boss, Johannes Karstensen, Dong-gyun Kim, Rachel M. Lekanoff, Fabien Lombard, Rubens M. Lopes, Claudie Marec, Andrew M. P. McDonnell, Daniela Niemeyer, Margaux Noyon, Stephanie H. O'Daly, Mark D. Ohman, Jessica L. Pretty, Andreas Rogge, Sarah Searson, Masashi Shibata, Yuji Tanaka, Toste Tanhua, Jan Taucher, Emilia Trudnowska, Jessica S. Turner, Anya Waite, and Lars Stemmann
Earth Syst. Sci. Data, 14, 4315–4337, https://doi.org/10.5194/essd-14-4315-2022, https://doi.org/10.5194/essd-14-4315-2022, 2022
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The term
marine particlescomprises detrital aggregates; fecal pellets; bacterioplankton, phytoplankton and zooplankton; and even fish. Here, we present a global dataset that contains 8805 vertical particle size distribution profiles obtained with Underwater Vision Profiler 5 (UVP5) camera systems. These data are valuable to the scientific community, as they can be used to constrain important biogeochemical processes in the ocean, such as the flux of carbon to the deep sea.
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
Biogeosciences, 18, 6455–6477, https://doi.org/10.5194/bg-18-6455-2021, https://doi.org/10.5194/bg-18-6455-2021, 2021
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This work analyzes an original high-resolution data set collected in the Mediterranean Sea. The major result is the impact of a fine-scale frontal structure on the distribution of phytoplankton groups, in an area of moderate energy with oligotrophic conditions. Our results provide an in situ confirmation of the findings obtained by previous modeling studies and remote sensing about the structuring effect of the fine-scale ocean dynamics on the structure of the phytoplankton community.
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.
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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Julien Jouanno, Rachid Benshila, Léo Berline, Antonin Soulié, Marie-Hélène Radenac, Guillaume Morvan, Frédéric Diaz, Julio Sheinbaum, Cristele Chevalier, Thierry Thibaut, Thomas Changeux, Frédéric Menard, Sarah Berthet, Olivier Aumont, Christian Ethé, Pierre Nabat, and Marc Mallet
Geosci. Model Dev., 14, 4069–4086, https://doi.org/10.5194/gmd-14-4069-2021, https://doi.org/10.5194/gmd-14-4069-2021, 2021
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The tropical Atlantic has been facing a massive proliferation of Sargassum since 2011, with severe environmental and socioeconomic impacts. We developed a modeling framework based on the NEMO ocean model, which integrates transport by currents and waves, and physiology of Sargassum with varying internal nutrient quota, and considers stranding at the coast. Results demonstrate the ability of the model to reproduce and forecast the seasonal cycle and large-scale distribution of Sargassum biomass.
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.
Jonathan V. Trueblood, Alessia Nicosia, Anja Engel, Birthe Zäncker, Matteo Rinaldi, Evelyn Freney, Melilotus Thyssen, Ingrid Obernosterer, Julie Dinasquet, Franco Belosi, Antonio Tovar-Sánchez, Araceli Rodriguez-Romero, Gianni Santachiara, Cécile Guieu, and Karine Sellegri
Atmos. Chem. Phys., 21, 4659–4676, https://doi.org/10.5194/acp-21-4659-2021, https://doi.org/10.5194/acp-21-4659-2021, 2021
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Sea spray aerosols (SSAs) can be an important source of ice-nucleating particles (INPs) that impact cloud properties over the oceans. In the Mediterranean Sea, we found that the INPs in the seawater surface microlayer increased by an order of magnitude after a rain dust event that impacted iron and bacterial abundances. The INP properties of SSA (INPSSA) increased after a 3 d delay. Outside this event, INPSSA could be parameterized as a function of the seawater biogeochemistry.
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.
Guillermo Feliú, Marc Pagano, Pamela Hidalgo, and François Carlotti
Biogeosciences, 17, 5417–5441, https://doi.org/10.5194/bg-17-5417-2020, https://doi.org/10.5194/bg-17-5417-2020, 2020
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The impact of Saharan dust deposition events on the Mediterranean Sea ecosystem was studied during a basin-scale survey (PEACETIME cruise, May–June 2017). Short-term responses of the zooplankton community were observed after episodic dust deposition events, highlighting the impact of these events on productivity up to the zooplankton level in the poorly fertilized pelagic ecosystems of the southern Mediterranean Sea.
Ruifang C. Xie, Frédéric A. C. Le Moigne, Insa Rapp, Jan Lüdke, Beat Gasser, Marcus Dengler, Volker Liebetrau, and Eric P. Achterberg
Biogeosciences, 17, 4919–4936, https://doi.org/10.5194/bg-17-4919-2020, https://doi.org/10.5194/bg-17-4919-2020, 2020
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Thorium-234 (234Th) is widely used to study carbon fluxes from the surface ocean to depth. But few studies stress the relevance of oceanic advection and diffusion on the downward 234Th fluxes in nearshore environments. Our study in offshore Peru showed strong temporal variations in both the importance of physical processes on 234Th flux estimates and the oceanic residence time of 234Th, whereas salinity-derived seawater 238U activities accounted for up to 40 % errors in 234Th flux estimates.
Alexandra N. Loginova, Andrew W. Dale, Frédéric A. C. Le Moigne, Sören Thomsen, Stefan Sommer, David Clemens, Klaus Wallmann, and Anja Engel
Biogeosciences, 17, 4663–4679, https://doi.org/10.5194/bg-17-4663-2020, https://doi.org/10.5194/bg-17-4663-2020, 2020
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We measured dissolved organic carbon (DOC), nitrogen (DON) and matter (DOM) optical properties in pore waters and near-bottom waters of the eastern tropical South Pacific off Peru. The difference between diffusion-driven and net fluxes of DOC and DON and qualitative changes in DOM optical properties suggested active microbial utilisation of the released DOM at the sediment–water interface. Our results suggest that the sediment release of DOM contributes to microbial processes in the area.
Cited articles
Barrillon, S., Rousselet, L., Petrenko, A. A., and Doglioli, A.: Lagrangian study of the water masses dynamics at the stations of the PEACETIME cruise in the Mediterranean Sea, 7th LAPCOD
Meeting, Venice, Italy, 17-21 June 2019.
Barbieux, M., Uitz, J., Mignot, A., Roesler, C., Claustre, H., Gentili, B., Taillandier, V., D'Ortenzio, F., Loisel, H., Poteau, A., Leymarie, E., Penkerc'h, C., Schmechtig, C., and Bricaud, A.: Biological production in two contrasted regions of the Mediterranean Sea during the oligotrophic period: An estimate based on the diel cycle of optical properties measured by BGC-Argo profiling floats, Biogeosciences Discuss. [preprint], https://doi.org/10.5194/bg-2021-123, in review, 2021.
Berline, L., Rammou, A.-M., Doglioli, A., Molcard, A., and Petrenko, A.: A Connectivity-Based Eco-Regionalization Method of the Mediterranean Sea, PLoS ONE, 9,
e111978, https://doi.org/10.1371/journal.pone.0111978, 2014.
Blanke, B. and Raynaud, S.: Kinematics of the Pacific equatorial
undercurrent: An Eulerian and Lagrangian approach from GCM results, J. Phys. Oceanogr.,
27, 1038–1053, 1997.
Boldrin, A., Miserocchi, S., Rabitti, S., Turchetto, M. M., Balboni, V.,
and Socal, G.: Particulate matter in the southern Adriatic and Ionian Sea:
characterisation and downward fluxes, J. Mar. Syst., 33, 389–410, 2002.
Briggs, N. T., Slade, W. H., Boss, E., and Perry, M. J.: Method for
estimating mean particle size from high-frequency fluctuations in beam
attenuation or scattering measurements, Appl. Opt., 52, 6710, https://doi.org/10.1364/AO.52.006710, 2013.
Briggs, N., Dall'Olmo, G., and Claustre, H.: Major role of particle
fragmentation in regulating biological sequestration of CO2 by the oceans,
Science, 367, 791–793, https://doi.org/10.1126/science.aay1790, 2020.
Casotti, R., Landolfi, A., Brunet, C., D'Ortenzio, F., Mangoni, O.,
d'Alcalà, M. R., and Denis, M.: Composition and dynamics of the
phytoplankton of the Ionian Sea (eastern Mediterranean), J. Geophys. Res.-Oceans, 108, C9, https://doi.org/10.1029/2002JC001541, 2003.
Celentano, P., Falco, P., and Zambianchi, E.: Surface connection between the
Ionian Sea and different areas of the Mediterranean derived from drifter
data, Deep-Sea Res. Pt. I, 166, 103431, https://doi.org/10.1016/j.dsr.2020.103431, 2020.
Chronis, G., Lykousis, V., Georgopoulos, D., Zervakis, V., Stavrakakis, S.,
and Poulos, S.: Suspended particulate matter and nepheloid layers over the
southern margin of the Cretan Sea (NE Mediterranean): seasonal distribution
and dynamics, Prog. Oceanogr., 46, 163–185,
https://doi.org/10.1016/S0079-6611(00)00017-3, 2000.
Civitarese, G., Gačić, M., Lipizer, M., and Eusebi Borzelli, G. L.: On the impact of the Bimodal Oscillating System (BiOS) on the biogeochemistry and biology of the Adriatic and Ionian Seas (Eastern Mediterranean), Biogeosciences, 7, 3987–3997, https://doi.org/10.5194/bg-7-3987-2010, 2010.
Feliú, G., Pagano, M., Hidalgo, P., and Carlotti, F.: Structure and function of epipelagic mesozooplankton and their response to dust deposition events during the spring PEACETIME cruise in the Mediterranean Sea, Biogeosciences, 17, 5417–5441, https://doi.org/10.5194/bg-17-5417-2020, 2020.
Doglioli, A. M., Nencioli, F., Petrenko, A. A., Fuda, J.-L.,
Rougier, G., and Grima, N.: A software package and hardware tools for in situ experiments in a Lagrangian reference frame, J. Atmos. Ocean. Tech., https://doi.org/10.1175/JTECH-D-12-00183.1, 2013.
D'Ortenzio, F. and Ribera d'Alcalà, M.: On the trophic regimes of the Mediterranean Sea: a satellite analysis, Biogeosciences, 6, 139–148, https://doi.org/10.5194/bg-6-139-2009, 2009.
d'Ovidio, F., Fernández, V., Hernández-García, E., and
López, C.: Mixing structures in the Mediterranean Sea from finite-size
Lyapunov exponents, Geophys. Res. Lett., 31, L17203,
https://doi.org/10.1029/2004GL020328, 2004.
d'Ovidio, F., Della Penna, A., Trull, T. W., Nencioli, F., Pujol, M.-I., Rio, M.-H., Park, Y.-H., Cotté, C., Zhou, M., and Blain, S.: The biogeochemical structuring role of horizontal stirring: Lagrangian perspectives on iron delivery downstream of the Kerguelen Plateau, Biogeosciences, 12, 5567–5581, https://doi.org/10.5194/bg-12-5567-2015, 2015.
Engel, A.: Distribution of transparent exopolymer particles (TEP) in
the northeast Atlantic Ocean and their potential significance for
aggregation processes, Deep Sea Res. Pt. I, 51, 83–92, 2004.
Espinasse, B., Carlotti, F., Zhou, M., and Devenon, J. L.: Defining
zooplankton habitats in the Gulf of Lion (NW Mediterranean Sea) using size
structure and environmental conditions, Mar. Ecol. Prog. Ser., 506, 31–46, 2014.
Espinasse, B., Basedow, S., Schultes, S., Zhou, M., Berline, L., and Carlotti, F.: Conditions for assessing zooplankton abundance with LOPC in
coastal waters, Prog. Oceanogr., 163, 260–270, 2018.
Gačić, M., Borzelli, G. E., Civitarese, G., Cardin, V., and Yari,
S.: Can internal processes sustain reversals of the ocean upper circulation?
The Ionian Sea example, Geophys. Res. Lett., 37, 2010.
Gačić, M., Civitarese, G., Eusebi Borzelli, G. L., Kovačević, V.,
Poulain, P.-M., Theocharis, A., Menna, M., Catucci, A., and
Zarokanellos, N.:
On the relationship between the decadal oscillations of the
northern Ionian Sea and the salinity distributions in the eastern
Mediterranean, J. Geophys. Res., 116, C12002, https://doi.org/10.1029/2011JC007280, 2011.
Guidi, L., Stemmann, L., Jackson, G. A., Ibanez, F., Claustre, H., Legendre,
L., and Gorsky, G.: Effects of phytoplankton community on production,
size, and export of large aggregates: A world-ocean analysis, Limnol. Oceanogr., 54,
1951–1963, 2009.
Guieu, C., D'Ortenzio, F., Dulac, F., Taillandier, V., Doglioli, A., Petrenko, A., Barrillon, S., Mallet, M., Nabat, P., and Desboeufs, K.: Introduction: Process studies at the air–sea interface after atmospheric deposition in the Mediterranean Sea – objectives and strategy of the PEACETIME oceanographic campaign (May–June 2017), Biogeosciences, 17, 5563–5585, https://doi.org/10.5194/bg-17-5563-2020, 2020a.
Guieu, C., Desboeufs, K., Albani, S., Alliouane, S., Aumont, O., Barbieux, M., Barrillon, S., Baudoux, A.-C., Berline, L., Bhairy, N., Bigeard, E., Bloss, M., Bressac, M., et al.: BIOGEOCHEMICAL dataset collected during the PEACETIME cruise, SEANOE [data set], https://doi.org/10.17882/75747, 2020b.
Henson, S. A., Sanders, R., Madsen, E., Morris, P. J., Le Moigne, F., and Quartly, G. D.: A reduced estimate of the strength of the ocean's
biological carbon pump, Geophys. Res. Lett., 38, https://doi.org/10.1029/2011GL046735, 2011.
Herman, A. W., Beanlands, B., and Phillips, E. F.: The next generation of Optical
Plankton Counter: the Laser-OPC, J. Plankton Res., 26, 1135–1145, 2004.
Herman, A. W. and Harvey, M.: Application of normalized biomass size spectra to
laser optical plankton counter net intercomparisons of zooplankton
distributions, J. Geophys. Res., 111, 1–9, 2006.
Karageorgis, A. P., Gardner, W. D., Georgopoulos, D., Mishonov, A. V.,
Krasakopoulou, E., and Anagnostou, C.: Particle dynamics in the Eastern
Mediterranean Sea: A synthesis based on light transmission, PMC, and POC
archives (1991–2001), Deep-Sea Res. Pt. I, 55, 177–202, 2008.
Karageorgis, A. P., Georgopoulos, D., Kanellopoulos, T. D., Mikkelsen, O. A.,
Pagou, K., Kontoyiannis, H., Kontoyianni, A., and Anagnostou, C.: Spatial and
seasonal variability of particulate matter optical and size properties in
the eastern mediterranean sea, J. Mar. Syst., 105, 123–134, 2012.
Kiko, R.: Marine particle size distribution dataset obtained with
the Underwater Vision Profiler 5 – Part 1 (2008–2010),
https://doi.pangaea.de/10.1594/PANGAEA.924374, 2020.
Laurenceau-Cornec, E. C., Le Moigne, F. A. C., Gallinari, M., Moriceau, B.,
Toullec, J., Iversen, M. H., Engel, A., and De La Rocha, C. L.: New guidelines
for the application of Stokes' models to the sinking velocity of marine
aggregates, Limnol. Oceanogr., 65, https://doi.org/10.1002/lno.11388, 2019.
Laurenceau-Cornec, E. C., Trull, T. W., Davies, D. M., Bray, S. G., Doran, J., Planchon, F., Carlotti, F., Jouandet, M.-P., Cavagna, A.-J., Waite, A. M., and Blain, S.: The relative importance of phytoplankton aggregates and zooplankton fecal pellets to carbon export: insights from free-drifting sediment trap deployments in naturally iron-fertilised waters near the Kerguelen Plateau, Biogeosciences, 12, 1007–1027, https://doi.org/10.5194/bg-12-1007-2015, 2015.
Lavigne, H., Civitarese, G., Gačić, M., and D'Ortenzio, F.: Impact of decadal reversals of the north Ionian circulation on phytoplankton phenology, Biogeosciences, 15, 4431–4445, https://doi.org/10.5194/bg-15-4431-2018, 2018.
Le Bot, P., Kermabon, C., Lherminier, P., and Gaillard, F.: Rapport technique
OPS/LPO 11-01. Ifremer, Centre de Brest, France,
https://www.umr-lops.fr/en/Technology/Software/CASCADE-7.2 (last access: 10 June 2020), 2011.
Le Moigne, F. A. C.: Pathways of organic carbon downward transport by the
oceanic biological carbon pump, Front. Mar. Sci., 6, 634, https://doi.org/10.3389/fmars.2019.00634, 2019.
Le Moigne, F. A. C., Gallinari, M., Laurenceau, E., and De La Rocha, C. L.: Enhanced rates of particulate organic matter remineralization by microzooplankton are diminished by added ballast minerals, Biogeosciences, 10, 5755–5765, https://doi.org/10.5194/bg-10-5755-2013, 2013.
MacIntyre, S., Alldredge, A. L., and Gotschalk, C. C.: Accumulation of Marine Snow
at Density Discontinuities in the Water Column, Limnol. Oceanogr., 40, 449–468, 1995.
Malanotte-Rizzoli, P., Manca, B. B., d'Alcalà, M. R., Theocharis, A.,
Bergamasco, A., Bregant, D., and Sansone, E.: A synthesis of the
Ionian Sea hydrography, circulation and water mass pathways during
POEM-Phase I, Prog. Oceanogr., 39, 153–204, 1997.
Marañón, E., Van Wambeke, F., Uitz, J., Boss, E. S., Dimier, C., Dinasquet, J., Engel, A., Haëntjens, N., Pérez-Lorenzo, M., Taillandier, V., and Zäncker, B.: Deep maxima of phytoplankton biomass, primary production and bacterial production in the Mediterranean Sea, Biogeosciences, 18, 1749–1767, https://doi.org/10.5194/bg-18-1749-2021, 2021.
Martin, P., Lampitt, R., Perry, M. J., Sanders, R., Lee, C., and D'asaro, E.:
Export and mesopelagic particle flux during a North Atlantic spring diatom
bloom, Deep-Sea Res. Pt. I, 58, 338–349, 2011.
Mazzocchi, M. G., Nervegna, D., D'elia, G., Di Capua, I., Aguzzi, L., and Boldrin, A.: Spring mesozooplankton communities in the epipelagic Ionian Sea
in relation to the Eastern Mediterranean Transient, J. Geophys. Res.-Oceans, 108, https://doi.org/10.1029/2002JC001640, 2003.
McDonnell, A. M., Lam, P. J., Lamborg, C. H., Buesseler, K. O., Sanders, R.,
Riley, J. S., and Bishop, J. K.: The oceanographic toolbox for
the collection of sinking and suspended marine particles, Prog. Oceanogr., 133, 17–31, 2015.
Menna, M., Suarez, N. R., Civitarese, G., Gačić, M., Rubino, A.,
and Poulain, P. M.: Decadal variations of circulation in the Central
Mediterranean and its interactions with mesoscale gyres, Deep-Sea Res. Pt. II, 164, 14–24, 2019.
Moutin, T., Doglioli, A. M., de Verneil, A., and Bonnet, S.: Preface: The Oligotrophy to the UlTra-oligotrophy PACific Experiment (OUTPACE cruise, 18 February to 3 April 2015), Biogeosciences, 14, 3207–3220, https://doi.org/10.5194/bg-14-3207-2017, 2017.
Nardelli, B. B., Tronconi, C., Pisano, A., and Santoleri, R.: High and
Ultra-High resolution processing of satellite Sea Surface Temperature data
over Southern European Seas in the framework of MyOcean project, Remote Sens. Environ., 129, 1–16,
2013.
Petrenko, A., Doglioli, A. M., Nencioli, F., Kersalé, M., Hu, Z.,
d'Ovidio, F.: A review of the LATEX project: mesoscale to submesoscale processes in a coastal environment, Ocean Dynam., 67, 513–533, https://doi.org/10.1007/s10236-017-1040-9, 2017.
Picheral, M., Guidi, L., Stemmann, L., Karl, D. M., Iddaoud, G., and Gorsky, G.: The Underwater Vision Profiler 5: An advanced instrument
for high spatial resolution studies of particle size spectra and
zooplankton, Limnol. Oceanogr.-Meth., 8, 462–473, 2010.
Pinardi, N., Zavatarelli, M., Adani, M., Coppini, G., Fratianni, C., Oddo,
P., and Bonaduce, A.: Mediterranean Sea large-scale
low-frequency ocean variability and water mass formation rates from 1987 to
2007: A retrospective analysis, Prog. Oceanogr., 132, 318–332, 2015.
Pisano, A., Nardelli, B. B., Tronconi, C., and Santoleri, R.: The new
Mediterranean optimally interpolated pathfinder AVHRR SST Dataset
(1982–2012), Remote Sens. Environ., 176, 107–116, 2016.
Prairie, J. C., Ziervogel, K., Camassa, R., McLaughlin, R. M., White, B. L.,
Dewald, C., and Arnosti, C.: Delayed settling of marine snow: Effects of
density gradient and particle properties and implications for carbon
cycling, Mar. Chem., 175, 28–38, 2015.
Ramondenc, S., Madeleine, G., Lombard, F., Santinelli, C., Stemmann, L.,
Gorsky, G., and Guidi, L.: An initial carbon export assessment in the
Mediterranean Sea based on drifting sediment traps and the Underwater Vision
Profiler data sets, Deep-Sea Res. Pt. I, 117, 107–119, 2016.
Richardson, T. L. and Jackson, G. A.: Small phytoplankton and carbon export from
the surface ocean, Science, 315, 838–840,
https://doi.org/10.1126/science.1133471, 2007.
Riley, J., Sanders, R., Marsay, C., Le Moigne, F. A. C., Achterberg, E.,
and Poulton, A.: The relative contribution of fast and slow sinking particles to
ocean carbon export, Global Biogeochem. Cy., 26,
https://doi.org/10.1029/2011GB004085, 2012.
Rousselet, L., Doglioli, A. M., de Verneil, A., Pietri, A., Della Penna, A.,
Berline, L., and Petrenko, A.: Vertical motions and their
effects on a biogeochemical tracer in a cyclonic structure finely observed
in the Ligurian Sea, J. Geophys. Res.-Oceans, 124, 3561–3574, 2019.
Stange, P., Bach, L., Le Moigne, F. A. C., Taucher, J., Boxhammer, T.,
and Riebesell, U.: Quantifying the time lag between organic matter production
and export in the surface ocean: Implications for estimates of export
efficiency, Geophys. Res. Lett., 44, 268–276, https://doi.org/10.1002/2016GL070875, 2017.
Stemmann, L., Jackson, G., and Gorsky, G.: A vertical model of particle size
distributions and fluxes in the midwater column that includes biological
and physical processes, II. Application to a three year survey in the NW
Mediterranean Sea, Deep-Sea Res. Pt. I, 51, 865–884, 2004.
Short summary
While the Ionian Sea is considered a nutrient-depleted and low-phytoplankton biomass area, it is a crossroad for water mass circulation. In the central Ionian Sea, we observed a strong contrast in particle distribution across a ~100 km long transect. Using remote sensing and Lagrangian simulations, we suggest that this contrast finds its origin in the long-distance transport of particles from the north, west and east of the Ionian Sea, where phytoplankton production was more intense.
While the Ionian Sea is considered a nutrient-depleted and low-phytoplankton biomass area, it is...
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