@article{fdi:010053150,
  title = {{R}elationships between heavy metals distribution and organic matter cycling in mangrove sediments ({C}onception {B}ay, {N}ew {C}aledonia)},
  author = {{M}archand, {C}yril and {A}llenbach, {M}. and {L}allier-{V}erges, {E}.},
  editor = {},
  language = {{ENG}},
  abstract = {{M}angroves of {N}ew {C}aledonia act as a buffer between a lagoon of more than 20,000 km(2) and the {I}sland, which suffers intense processes of erosion resulting from urbanization and natural resources exploitation. {T}his preliminary study aims at determining how heavy metals are distributed in mangrove sediments and pore-waters in relationship with their organic content. {T}o reach our goal, a series of 50-cm deep cores were collected in the mangrove of {C}onception {B}ay. {T}he various coring sites are representative of live forests ({A}vicennia marina. {R}hizophora stylosa), dead forest, and intertidal unvegetated area. {T}he ranges of concentrations in sediments were the following (mu mol g(-1)): {C}u (0.08 to 0.51), {C}o (0.01 to 0.38), {N}i (0.03 to 3.55), {C}r (0.36 to 3.11), {Z}n (0.68 to 2.36), {M}n (1.13 to 5.0) and {F}e (22.64 to 721.69). {H}eavy metals distribution within sediments and pore-water appear to result from diagenetic processes linked to {OM} decomposition. {B}eneath the dead {A}vicennia forest and in the unvegetated sediments, the higher the organic content, the higher the metal concentration in the solid phase. {B}eneath living mangrove stands, despite a higher organic content, as well as higher sulphur content, heavy metals concentrations were not higher than those measured in the other sampling sites. {B}eneath these forests, redox conditions were mainly controlled by the length of waterlogging and the activity of root system. {W}e suggest that, because of the specificity of the {A}vicennia root system and its position in the intertidal zone, heavy metals are more bioavailable and potentially more mobile than beneath {R}hizophora stand.},
  keywords = {{M}angrove ; {H}eavy metals ; {O}rganic matter ; {R}edox conditions ; {N}ew {C}aledonia},
  booktitle = {},
  journal = {{G}eoderma},
  volume = {160},
  numero = {3-4},
  pages = {444--456},
  ISSN = {0016-7061},
  year = {2011},
  DOI = {10.1016/j.geoderma.2010.10.015},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053150},
}