@article{fdi:010073162,
  title = {{I}ron from a submarine source impacts the productive layer of the {W}estern {T}ropical {S}outh {P}acific ({WTSP})},
  author = {{G}uieu, {C}. and {B}onnet, {S}ophie and {P}etrenko, {A}. and {M}enk{\`e}s, {C}hristophe and {C}havagnac, {V}. and {D}esboeufs, {K}. and {M}aes, {C}hristophe and {M}outin, {T}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n the {W}estern {T}ropical {S}outh {P}acific, patches of high chlorophyll concentrations linked to the occurrence of {N}-2-fixing organisms are found in the vicinity of volcanic islands. {T}he survival of these organisms relies on a high bioavailable iron supply whose origin and fluxes remain unknown. {H}ere, we measured high dissolved iron ({DF}e) concentrations (up to 66 n{M}) in the euphotic layer, extending zonally over 10 degrees longitude (174 {E}-175 {W}) at similar to 20 degrees {S} latitude. {DF}e atmospheric fluxes were at the lower end of reported values of the remote ocean and could not explain the high {DF}e concentrations measured in the water column in the vicinity of {T}onga. {W}e argue that the high {DF}e concentrations may be sustained by a submarine source, also characterized by freshwater input and recorded as salinity anomalies by {A}rgo float in situ measurements and atlas data. {T}he observed negative salinity anomalies are reproduced by simulations from a general ocean circulation model. {S}ubmarine iron sources reaching the euphotic layer may impact nitrogen fixation across the whole region.},
  keywords = {{PACIFIQUE} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{S}cientific {R}eports - {N}ature},
  volume = {8},
  numero = {},
  pages = {art. 9075 [9 p.]},
  ISSN = {2045-2322},
  year = {2018},
  DOI = {10.1038/s41598-018-27407-z},
  URL = {https://www.documentation.ird.fr/hor/fdi:010073162},
}