Sources, sinks, and cycling of dissolved organic copper binding ligands in the ocean

Autor: Angel Ruacho, Camille Richon, Hannah Whitby, Randelle M. Bundy

Publikováno v: Communications Earth & Environment, Vol 3, Iss 1, Pp 1-19 (2022)

Margin sediments and rivers are the most significant sources of copper binding ligands in the ocean while sedimentation, microbial uptake and photochemical degradation are the major sinks, suggests a synthesis of research on the cycling of copper lig

Externí odkaz: https://doaj.org/article/8f591959d3e343feb996a24c8a6d83d6

Influence of shallow hydrothermal fluid release on the functioning of phytoplankton communities

Autor: Chloé Tilliette, Frédéric Gazeau, Gemma Portlock, Mar Benavides, Sophie Bonnet, Catherine Guigue, Nathalie Leblond, Caroline Lory, Dominique Marie, Maryline Montanes, Elvira Pulido-Villena, Géraldine Sarthou, Marc Tedetti, Maria-Elena Vorrath, Hannah Whitby, Cécile Guieu

Publikováno v: Frontiers in Marine Science, Vol 10 (2023)

In the Western Tropical South Pacific (WTSP) Ocean, a hotspot of dinitrogen fixation has been identified. The survival of diazotrophs depends, among others, on the availability of dissolved iron (DFe) largely originating, as recently revealed, from s

Externí odkaz: https://doaj.org/article/78c106a3572e4d51bd5b1695461cf395

Processes Driving Iron and Manganese Dispersal From the TAG Hydrothermal Plume (Mid-Atlantic Ridge): Results From a GEOTRACES Process Study

Autor: David González-Santana, Hélène Planquette, Marie Cheize, Hannah Whitby, Arthur Gourain, Thomas Holmes, Vivien Guyader, Cécile Cathalot, Ewan Pelleter, Yves Fouquet, Géraldine Sarthou

Publikováno v: Frontiers in Marine Science, Vol 7 (2020)

Hydrothermal vents are a recognized source of trace elements to the ocean inventory. Nevertheless, the contribution of slow-spreading ridges remains poorly resolved. To address this, high-resolution dissolved (

Externí odkaz: https://doaj.org/article/efdd2ccd24534bf4a736246fc7f3ab17

Dissolved concentrations and organic speciation of copper in the Amazon River estuary and mixing plume

Autor: Pablo Lodeiro, Michael Seidel, Andrea Koschinsky, Adrienne Patricia Hollister, Hannah Whitby, Martha Gledhill

Publikováno v: Marine Chemistry
Marine Chemistry, Elsevier, 2021, 234, pp.104005. ⟨10.1016/j.marchem.2021.104005⟩

International audience; The Amazon is Earth's largest river by volume output, making it an important source of trace metals and dissolved organic matter (DOM) to the Atlantic Ocean. Despite major recent anthropogenic disruptions to the Amazon catchme

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::54c1e82e967177449b0366f3028d9425
https://hal.univ-brest.fr/hal-03326537

Contribution of Electroactive Humic Substances to the Iron‐Binding Ligands Released During Microbial Remineralization of Sinking Particles

Autor: Philip W. Boyd, Cécile Guieu, Matthieu Bressac, Géraldine Sarthou, Hannah Whitby, Michael J. Ellwood

Publikováno v: Geophysical Research Letters
Geophysical Research Letters, American Geophysical Union, 2020, 47 (7), pp.e2019GL086685. ⟨10.1029/2019GL086685⟩
Geophysical Research Letters (0094-8276) (American Geophysical Union (AGU)), 2020-04, Vol. 47, N. 7, P. e2019GL086685 (11p.)
Geophysical Research Letters, 2020, 47 (7), pp.e2019GL086685. ⟨10.1029/2019GL086685⟩

International audience; Iron is a key micronutrient in seawater, but concentrations would be negligible without the presence of organic ligands. The processes influencing the ligand pool composition are poorly constrained, limiting our understanding

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24577e20604d9a9a98967871dd09cc00
https://hal.archives-ouvertes.fr/hal-02638892