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| Valdés, Valentina; Carlotti, François; Escribano, Ruben; Donoso, Katty; Pagano, Marc; Molina, Veronica; Fernandez, Camila. |
| Zooplankton play a key role in the regeneration of nitrogen and phosphorus in the ocean through grazing and metabolism. This study investigates the role of the organic and inorganic nitrogen and phosphorus compounds released by copepods on biogeochemical processes and on the microbial community composition during the OUTPACE cruise (18 February–3 April 2015) at three long duration stations (LD). Two LD stations were located in the Melanesian Archipelago region (MA; LD A and LD B) and one in the South Pacific Gyre (SG; LD C), which represent oligotrophic and ultraoligotrophic regions respectively. At each station, microcosm onboard experiments were performed with locally sampled organisms, comprising a mix of epipelagic copepods fed with their natural food... |
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| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00422/53391/54253.pdf |
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| Berline, Léa; Doglioli, Andrea Michelangelo; Petrenko, Anne; Barrillon, Stéphanie; Espinasse, Boris; Le Moigne, Frederic A. C.; Simon-bot, François; Thyssen, Melilotus; Carlotti, François. |
| In the upper layers of the Ionian Sea, young Mediterranean Atlantic Waters (MAW) flowing eastward from the Sicily channel meet old MAW. In May 2017, during the PEACETIME cruise, fluorescence and particle content sampled at high resolution revealed unexpected heterogeneity in the central Ionian. Surface salinity measurements, together with altimetry-derived and hull-mounted ADCP currents, describe a zonal pathway of AW entering the Ionian Sea, consistent with the so-called cyclonic mode in the North Ionian Gyre. The ION-Tr transect, located ~19–20° E–~36° N turned out to be at the crossroad of three water masses, mostly coming from the west, north and from an isolated anticyclonic eddy northeast of ION-Tr. Using Lagrangian numerical simulations, we suggest... |
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| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00677/78886/81182.pdf |
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| Lomnard, Fabien; Boss, Emmanuel; Waite, Anya M.; Vogt, Meike; Uitz, Julia; Stemman, Lars; Sosik, Heidi M.; Schulz, Jan; Romagnan, Jean-baptiste; Picheral, Marc; Pearlman, Jay; Ohman, Mark D; Niehoff, Barbara; Möller, Klas O; Miloslavich, Patricia; Lara-lpez, Ana; Kudela, Raphael; Lopes, Ribens M; Kiko, Rainer; Karp-boss, Lee; Jaffe, Jules S; Iversen, Morten H; Irisson, Jean-olivier; Fennel, Katja; Hauss, Helena; Guidi, Lionel; Gorsky, Gaby; Giering, Sarah L.c.; Gaube, Peter; Gallager, Scott; Dubelaar, George; Cowen, Robert K; Carlotti, François; Briseno-avena, Christian; Berline, Léo; Benoit-bird, Kelly; Bax, Nicholas; Batten, Sonia; Ayata, Sakina Dorothée; Artigas, Luis Felipe; Appeltans, Ward. |
| In this paper we review the technologies available to make globally quantitative observations of particles in general—and plankton in particular—in the world oceans, and for sizes varying from sub-microns to centimeters. Some of these technologies have been available for years while others have only recently emerged. Use of these technologies is critical to improve understanding of the processes that control abundances, distributions and composition of plankton, provide data necessary to constrain and improve ecosystem and biogeochemical models, and forecast changes in marine ecosystems in light of climate change. In this paper we begin by providing the motivation for plankton observations, quantification and diversity qualification on a global scale. We... |
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Palavras-chave: Plankton; Imaging; OceanObs; Autonomous platforms; Global observing; EOVs; ECVs. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00490/60217/63585.pdf |
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| Carlotti, François; Tronczynski, Jacek; Tedetti, Marc; Pagano, Marc; Garnier, Cédric. |
| Recent research on the bioaccumulation of organic and trace element contaminants along trophic food webs suggests that plankton plays a central role as a 'biological pump' for pollutants. The MERITE-HIPPOCAMPE project (oceanographic cruise in April- May 2019) aims at studying the interactions between plankton and contaminants (metallic, organic plastics) at atmosphere/water/biota interfaces via a North-South trans-Mediterranean approach in contrasted areas (primary production, fishing zones, ecoregions, polluted bays). The target contaminants are on the lists of priority pollutants and substances of Regional Conventions (OSPAR) and EU directives (WFD, MSF). The expected results are to provide a better understanding of the transfer processes of contaminants... |
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Palavras-chave: Trace elements; Pcb; Pah; Plankton; Mediterranean Sea. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00599/71132/69447.pdf |
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| Feliú, Guillermo; Pagano, Marc; Hidalgo, Pamela; Carlotti, François. |
| The PEACETIME cruise (May–June 2017) was a basin-scale survey covering the Provencal, Algerian, Tyrrhenian, and Ionian basins during the post-spring bloom period and was dedicated to tracking the impact of Saharan dust deposition events on the Mediterranean Sea pelagic ecosystem. Two such events occurred during this period, and the cruise strategy allowed for the study of the initial phase of the ecosystem response to one dust event in the Algerian Basin (during 5 d at the so-called “FAST long-duration station”) as well as the study of a latter response to another dust event in the Tyrrhenian Basin (by sampling from 5 to 12 d after the deposition). This paper documents the structural and functional patterns of the zooplankton component during this survey,... |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00659/77062/78363.pdf |
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| Carlotti, François; Pagano, Marc; Guilloux, Loïc; Donoso, Katty; Valdés, Valentina; Grosso, Olivier; Hunt, Brian P. V.. |
| This paper presents results on the spatial and temporal distribution patterns of mesozooplankton in the western tropical South Pacific along the 20 °S south visited during austral summer (February–April 2015). By contributing to the interdisciplinary OUTPACE (Oligotrophy to UlTra-oligotrophy PACific Experiment) project (Moutin et al., 2017), the specific aims of this study dedicated to mesozooplankton observations were (1) to document the responses of zooplankton in terms of species diversity, density and biomass along the transect, and (2) to characterize the trophic pathways from primary production to large mesozooplanktonic organisms. Along a West-East transect of 4000 km from New Caledonia to the French Polynesia, 15 short-duration stations (SD-1 to... |
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| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00435/54683/56101.pdf |
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