@article{fdi:010077889,
  title = {{I}mpact of inorganic particles of sedimentary origin on global dissolved iron and phytoplankton distribution},
  author = {{B}eghoura, {H}. and {G}orgues, {T}homas and {A}umont, {O}livier and {P}lanquette, {H}. {F}. and {T}agliabue, {A}. and {A}uger, {P}ierre-{A}ma{\¨e}l},
  editor = {},
  language = {{ENG}},
  abstract = {{I}ron is known to be the limiting nutrient for the phytoplankton growth over similar to 40% of the global ocean and to impact the structure of marine ecosystems. {D}issolved iron ({DF}e) is assumed to be the only form available to phytoplankton while particulate iron ({PF}e) has mostly been considered for its role in the biogenic iron remineralization and induced scavenging. {T}herefore, most studies focused on the nature of {DF}e external sources to the ocean (i.e., eolian dust, riverine fluxes, hydrothermal sources, and sediment) and their quantification, which still remain uncertain. {A}mong these external sources, the sedimentary sources have been shown to be underestimated. {M}oreover, the iron supply from sediments has been documented to be often larger in the particle fraction. {H}ere we test the impacts of an iron sediment source of inorganic particulate iron ({PF}e{I}norg) on global {DF}e and phytoplankton distribution. {W}e use experimentally acquired knowledge to test a parameterization of a {PF}e{I}norg pool in a global biogeochemical model and compare with published indirect estimation. {D}epending on the parameterization of its dissolution and sinking speed, the {PF}e{I}norg can noticeably enrich water masses in {DF}e during its transport from the sediment to the open ocean, notably in regions not usually accessible to external {DF}e inputs. {I}ndeed, the fact that {DF}e is prone to scavenging reduces the impact of equivalent {F}e inputs from sediments in the dissolved form in those regions far from the sediment sources. {PF}e{I}norg thereby has the potential to fuel the phytoplankton growth in offshore regions impacting the coastal-offshore chlorophyll gradient.},
  keywords = {},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch : {O}ceans},
  volume = {124},
  numero = {12},
  pages = {8626--8646},
  ISSN = {2169-9275},
  year = {2019},
  DOI = {10.1029/2019jc015119},
  URL = {https://www.documentation.ird.fr/hor/fdi:010077889},
}