@article{fdi:010064666,
  title = {{S}hallow methylmercury production in the marginal sea ice zone of the central {A}rctic {O}cean},
  author = {{H}eimburger, {L}. {E}. and {S}onke, {J}. {E}. and {C}ossa, {D}. and {P}oint, {D}avid and {L}agane, {C}hristelle and {L}affont, {L}. and {G}alfond, {B}. {T}. and {N}icolaus, {M}. and {R}abe, {B}. and van der {L}oeff, {M}. {R}.},
  editor = {},
  language = {{ENG}},
  abstract = {{M}ethylmercury ({M}e{H}g) is a neurotoxic compound that threatens wildlife and human health across the {A}rctic region. {T}hough much is known about the source and dynamics of its inorganic mercury ({H}g) precursor, the exact origin of the high {M}e{H}g concentrations in {A}rctic biota remains uncertain. {A}rctic coastal sediments, coastal marine waters and surface snow are known sites for {M}e{H}g production. {O}bservations on marine {H}g dynamics, however, have been restricted to the {C}anadian {A}rchipelago and the {B}eaufort {S}ea (<79 degrees {N}). {H}ere we present the first central {A}rctic {O}cean (79-90 degrees {N}) profiles for total mercury (t{H}g) and {M}e{H}g. {W}e find elevated t{H}g and {M}e{H}g concentrations in the marginal sea ice zone (81-85 degrees {N}). {S}imilar to other open ocean basins, {A}rctic {M}e{H}g concentration maxima also occur in the pycnocline waters, but at much shallower depths (150-200 m). {T}he shallow {M}e{H}g maxima just below the productive surface layer possibly result in enhanced biological uptake at the base of the {A}rctic marine food web and may explain the elevated {M}e{H}g concentrations in {A}rctic biota. {W}e suggest that {A}rctic warming, through thinning sea ice, extension of the seasonal sea ice zone, intensified surface ocean stratification and shifts in plankton ecodynamics, will likely lead to higher marine {M}e{H}g production.},
  keywords = {{ARCTIQUE}},
  booktitle = {},
  journal = {{S}cientific {R}eports},
  volume = {5},
  numero = {},
  pages = {art. 10318 [6 p.]},
  ISSN = {2045-2322},
  year = {2015},
  DOI = {10.1038/srep10318},
  URL = {https://www.documentation.ird.fr/hor/fdi:010064666},
}