@article{fdi:010083184,
  title = {{M}ercury stable isotopes constrain atmospheric sources to the ocean},
  author = {{J}iskra, {M}. and {H}eimburger-{B}oavida, {L}. {E}. and {D}esgranges, {M}. {M}. and {P}etrova, {M}. {V}. and {D}ufour, {A}. and {F}erreira-{A}raujo, {B}. and {M}asbou, {J}. and {C}hmeleff, {J}. and {T}hyssen, {M}. and {P}oint, {D}avid and {S}onke, {J}. {E}.},
  editor = {},
  language = {{ENG}},
  abstract = {{H}uman exposure to toxic mercury ({H}g) is dominated by the consumption of seafood(1,2). {E}arth system models suggest that {H}g in marine ecosystems is supplied by atmospheric wet and dry {H}g(ii) deposition, with a three times smaller contribution from gaseous {H}g(0) uptake(3,4). {O}bservations of marine {H}g(ii) deposition and {H}g(0) gas exchange are sparse, however(5), leaving the suggested importance of {H}g(ii) deposition(6) ill-constrained. {H}ere we present the first {H}g stable isotope measurements of total {H}g (t{H}g) in surface and deep {A}tlantic and {M}editerranean seawater and use them to quantify atmospheric {H}g deposition pathways. {W}e observe overall similar t{H}g isotope compositions, with median {D}elta {H}g-200 signatures of 0.02 parts per thousand, lying in between atmospheric {H}g(0) and {H}g(ii) deposition end-members. {W}e use a {D}elta {H}g-200 isotope mass balance to estimate that seawater t{H}g can be explained by the mixing of 42% (median; interquartile range, 24-50%) atmospheric {H}g(ii) gross deposition and 58% (50-76%) {H}g(0) gross uptake. {W}e measure and compile additional, global marine {H}g isotope data including particulate {H}g, sediments and biota and observe a latitudinal {D}elta {H}g-200 gradient that indicates larger ocean {H}g(0) uptake at high latitudes. {O}ur findings suggest that global atmospheric {H}g(0) uptake by the oceans is equal to {H}g(ii) deposition, which has implications for our understanding of atmospheric {H}g dispersal and marine ecosystem recovery. {M}ercury deposition pathways from the atmosphere to the ocean remain uncertain, but mercury stable isotope measurements from the {A}tlantic and {M}editerranean show that ocean uptake of gaseous elemental mercury is more important than previously thought.},
  keywords = {{ATLANTIQUE} ; {MEDITERRANEE}},
  booktitle = {},
  journal = {{N}ature},
  volume = {597},
  numero = {7878},
  pages = {678--682 + 13 p.},
  ISSN = {0028-0836},
  year = {2021},
  DOI = {10.1038/s41586-021-03859-8},
  URL = {https://www.documentation.ird.fr/hor/fdi:010083184},
}