@article{fdi:010066996,
  title = {{T}race metal geochemistry in mangrove sediments and their transfer to mangrove plants ({N}ew {C}aledonia)},
  author = {{M}archand, {C}yril and {F}ernandez, {J}. {M}. and {M}oreton, {B}.},
  editor = {},
  language = {{ENG}},
  abstract = {{B}ecause of their physico-chemical inherent properties, mangrove sediments may act as a sink for pollutants coming from catchments. {T}he main objective of this study was to assess the distribution of some trace metals in the tissues of various mangrove plants developing downstream highly weathered ferralsols, taking into account metals partitioning in the sediment. {I}n {N}ew {C}aledonia, mangroves act as a buffer between open-cast mines and the world's largest lagoon. {A}s a result of the erosion of lateritic soils, {N}i and {F}e concentrations in the sediment were substantially higher than the world average. {W}hatever the mangrove stand and despite low bioaccumulation and translocations factors, {F}e and {N}i were also the most abundant metals in the different plant tissues. {T}his low bioaccumulation may be explained by: i) the low availability of metals, which were mainly present in the form of oxides or sulfur minerals, and ii) the root systems acting as barriers towards the transfer of metals to the plant. {C}onversely, {C}u and {Z}n metals had a greater mobility in the plant, and were characterized by high bioconcentration and translocation factors compared to the other metals. {C}u and {Z}n were also more mobile in the sediment as a result of their association with organic matter. {W}hatever the metal, a strong decrease of trace metal stock was observed from the landside to the seaside of the mangrove, probably as a result of the increased reactivity of the sediment due to {OM} enrichment. {T}his reactivity lead to higher dissolution of bearing phases, and thus to the export of dissolved trace metals trough the tidal action. {C}u and {Z}n were the less concerned by the phenomenon probably as a result of higher plant uptake and their restitution to the sediment with litter fall in stands where tidal flushing is limited.},
  keywords = {{M}angrove ; {T}race metals ; {P}artitioning ; {B}ioaccumulation ; {N}ew {C}aledonia ; {NOUVELLE} {CALDEONIE}},
  booktitle = {},
  journal = {{S}cience of the {T}otal {E}nvironment},
  volume = {562},
  numero = {},
  pages = {216--227},
  ISSN = {0048-9697},
  year = {2016},
  DOI = {10.1016/j.scitotenv.2016.03.206},
  URL = {https://www.documentation.ird.fr/hor/fdi:010066996},
}