@article{PAR00002858,
  title = {{O}rigin and diagenesis of lignin and carbohydrates in mangrove sediments of {G}uadeloupe ({F}rench {W}est {I}ndies): evidence for a two-step evolution of organic deposits},
  author = {{L}allier-{V}erg{\`e}s, {E}. and {M}archand, {C}yril and {D}isnar, {J}.{R}. and {L}ottier, {N}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he mangroves of {G}rande {T}erre {I}sland ({G}uadeloupe, {F}rench {W}est {I}ndies) are known to store large amounts of organic carbon, and organic-rich sediments have been described to several meters depth. {T}he purpose of the present work was to precisely determine the molecular composition (carbohydrates and lignin-derived phenols) of these organic deposits in relationship with environmental conditions. {I}t was found that within the upper meter of the cores, geochemical data displayed the classical degradation pattern of organic matter ({OM}) deriving from higher plants. {O}n the one hand, carbohydrates from mangrove tissues underwent fast decomposition, other compounds being simultaneously synthesized by bacteria. {O}n the other hand, lignin phenols were lost rather slowly, i.e. at a similar or lower rate than {TOC}, their distribution with depth evidencing various lignin decomposition pathways depending on redox conditions. {T}he position of the swamp with respect to salt and fresh water tables strongly influenced these conditions. {A}t depth, results revealed an organic-rich layer, which was characterized by surprisingly well-preserved {OM} with regard to sugar and phenol compositions. {W}e speculate that the preservation of these compounds might be explained by a rapid and permanent flooding of the mangrove stands that may have occurred more than a thousand years ago. {W}e suggest that the geodynamic context, i.e. the recurrent seismic activity recorded in {G}uadeloupe, may have induced such a flooding, resulting in the preservation of this {OM}.},
  keywords = {{M}angrove ; {C}arbohydrates ; {L}ignin-derived phenols ; {E}arly diagenesis ; {G}uadeloupe ; {GUADELOUPE}},
  booktitle = {},
  journal = {{C}hemical {G}eology},
  volume = {255},
  numero = {},
  pages = {388--398},
  year = {2008},
  DOI = {10.1016/j.chemgeo.2008.07.009},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00002858},
}