TONGA 2019

Type Oceanographic cruise
Ship L'Atalante
Ship owner Ifremer
Dates 31/10/2019 - 05/12/2019
Chief scientist(s) GUIEU Cécile , BONNET Sophie


181 chemin du Lazaret

06230 Villefranche-sur-Mer

DOI 10.17600/18000884

The objectives of the cruise were to investigate at least 2 active volcanoes where shallow (< 500 m) hydrothermal sites could release chemical elements both able to fertilize and/or bring toxicity to the planktonic food web. More specifically, the task 1 of the TONGA cruise was to characterize chemically and optically the hydrothermal fluids and to compare the source from below (shallow hydrothermal fluids) with the source from above (atmospheric deposition); the task 2 was related to the dynamical dispersion of the fluids at small and regional scale; the third task was to investigate the impact of the shallow hydrothermal sources on the biological activity and diversity, and the feedback to the atmosphere via the oceanic emissions of primary and secondary aerosols.

An important objective was to communicate about the campaign mainly by the feed of a Tweeter account ( The outreach component of the campaign was done in collaboration with the adopt-a-float project and two floats have been `adopted' by kids from two schools (one in Nouméa and one in Abu Dhabi).

The position of the sampling station has been constantly re evaluated during the campaign to fulfill the objectives: a long west to east (up to the blue waters of the gyre) transect allowed to characterize the different biogeochemical provinces crossed and a focus in the region of the Lau Basin allowed to investigate the impact of shallow hydrothermal sources.

A series of short and long stations allowed to fully characterizing the stocks and the fluxes in the different provinces. Short-term (up to 10 days) processes studies have been conducted (drifting moorings and minicosms experiments). A fixed mooring deployed in the Lau Basin will allow to study the carbon/metals export at the annual time scale. In addition to the team embarked on board the R/V Atalante, several scientists assisted us on land to advice on the potential active sites that we could visit, the dynamic condition of the targeted area and also specifically on the interpretation of acoustic survey above volcanoes.


Published data

Guieu Cécile, Bonnet Sophie, Abadou Fatima, Alliouane Samir, Arnaud-Haond Sophie, Arnone Veronica, Baudoux Anne-Claire, Baumas Chloe, Beillard Lucie, Benavides Mar, Berman-Frank Ilana, Bhairy Nagib, Bigeard Estelle, Boulart Cedric, Bouruet-Aubertot Pascale, Boyd Philip, Bressac Matthieu, Camps Mercedes, Chaffron Samuel, Chavagnac Valérie, Chevaillier Servanne, Collot Julien, Cuypers Yannis, de Liège Guillaume, de Saint Léger Emmanuel, de Vargas Colomban, Desboeufs Karine, Desgranges Marie-Maelle, Destrigneville Christine, Dimier Céline, Diruit Wendy, Dissard Delphine, Doussin Jean-François, Dufour Aurélie, Dulaquais Gabriel, Fernandez Jean-Michel, Feron Anaïs, Ferrieux Mathilde, Filella Alba, Forrer Heather, Fourrier Pierre, Gac Jean-Philippe, Gachenot Martin, Gaimoz Cécile, Garczarek Laurence, Gazeau Frédéric, Gonzalez Aridane, Gonzalez Santana David, Gorgues Thomas, Grima Nicolas, Grisoni Jean-Michel, Grosso Olivier, Guigue Catherine, Habasque Jeremie, Heimbürger-Boavida Lars-Eric, Jeandel Catherine, Jeanthon Christian, Journet Emilie, Knapp Angela, Lacan François, Le Gall Florence, Le Moal Pierre, Le Moigne Frédéric, Leblanc Karine, Leblond Nathalie, Lebourges-Dhaussy Anne, Leconte Jade, Lefèvre Dominique, Lombard Fabien, Lorrain Anne, Lory Caroline, Maes Christophe, Mahieu Léo, Marie Dominique, Mazoyer Camille, Menkes Christophe, Michoud Vincent, Montanes Maryline, Not Fabrice, Nunige Sandra, Paparella Francesco, Patriat Martin, Pelletier Bernard, Petrenko Anne, Planquette Helene, Point David, Portlock Gemma, Probert Ian, Pulido-Villena Elvira, Ratin Morgane, Ratnarajah Lavenia, Riso Ricardo, Rizzo Andrea, Salaun Pascal, Sarthou Geraldine, Schmechtig Catherine, Sellegri Karine, Simon Nathalie, Tagliabue Alessandro, Taillandier Vincent, Tamburini Christian, Tedetti Marc, Thibon Fanny, Tilliette Chloé, Torres Rodriguez Natalia, Triquet Sylvain, Uitz Julia, Van [...] (2022). BIOGEOCHEMICAL dataset collected during the TONGA cruise.

Data managed by SISMER



Bonnet Sophie, Benavides Mar, Le Moigne Frédéric A. C., Camps Mercedes, Torremocha Antoine, Grosso Olivier, Dimier Céline, Spungin Dina, Berman-Frank Ilana, Garczarek Laurence, Cornejo-Castillo Francisco M. (2023). Diazotrophs are overlooked contributors to carbon and nitrogen export to the deep ocean. Isme Journal, 17(1), 47-58. Publisher's official version : , Open Access version :

Fuchs Robin, Baumas Chloé M. J., Garel Marc, Nerini David, Le Moigne Frédéric A. C., Tamburini Christian (2023). A RUpture‐Based detection method for the Active mesopeLagIc Zone (RUBALIZ): A crucial step toward rigorous carbon budget assessments. Limnology and Oceanography: Methods, 21(1), 24-39. Publisher's official version : , Open Access version :

Lory C., Van Wambeke F., Fourquez M., Barani A., Guieu C., Tilliette C., Marie D., Nunige S., Berman-Frank I., Bonnet Sophie (2022). Assessing the contribution of diazotrophs to microbial Fe uptake using a group specific approach in the Western Tropical South Pacific Ocean. ISME Communications, 2(1), 41 (11p.). Publisher's official version : , Open Access version :

Fourrier Pierre, Dulaquais Gabriel, Riso Ricardo (2022). Influence of the conservation mode of seawater for dissolved organic carbon analysis. Marine Environmental Research, 181, 105754 (7p.).

Benavides Mar, Bonnet Sophie, Le Moigne Frédéric A. C., Armin Gabrielle, Inomura Keisuke, Hallstrøm Søren, Riemann Lasse, Berman-Frank Ilana, Poletti Emilie, Garel Marc, Grosso Olivier, Leblanc Karine, Guigue Catherine, Tedetti Marc, Dupouy Cécile (2022). Sinking Trichodesmium fixes nitrogen in the dark ocean. Isme Journal, 16(10), 2398-2405.

Tilliette C., Taillandier V., Bouruet‐aubertot P., Grima Nicolas, Maes Christophe, Montanes M., Sarthou Geraldine, Vorrath M‐e., Arnone V., Bressac M., González‐santana D., Gazeau F., Guieu C. (2022). Dissolved iron patterns impacted by shallow hydrothermal sources along a transect through the Tonga‐Kermadec arc. Global Biogeochemical Cycles, 36(7), e2022GB007363 (27p.). Publisher's official version : , Open Access version :

Fourrier P., Dulaquais Gabriel, Guigue C., Giamarchi P., Sarthou Geraldine, Whitby H., Riso Ricardo (2022). Characterization of the vertical size distribution, composition and chemical properties of dissolved organic matter in the (ultra)oligotrophic Pacific Ocean through a multi-detection approach. Marine Chemistry, 240, 104068 (15p.). Publisher's official version : , Open Access version :

Benavides Mar, Conradt Louis, Bonnet Sophie, Berman-Frank Ilana, Barrillon Stéphanie, Petrenko Anne, Doglioli Andrea (2021). Fine-scale sampling unveils diazotroph patchiness in the South Pacific Ocean. ISME Communications, 1(1), 3 (3p.). Publisher's official version : , Open Access version :