@incollection{fdi:010070550,
  title = {{B}iogeochemical functionning of {A}mazonian floodplains : the caso of {L}ago {G}rande de {C}uruai},
  author = {{B}onnet, {M}arie-{P}ierre and {G}arnier, {J}. and {B}arroux, {G}. and {B}oaventura, {G}.{R}. and {S}eyler, {P}atrick},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he large floodplains associated with the {A}mazon {R}iver and its main tributaries affect water transport, influence sediment and chemical budgets and support highly diverse ecosystems and productive fi sheries. {A}pproximately 25% of the {A}mazon {R}iver discharge is routed through these systems along a 2,000 km reach between {S}ao {P}aulo de {O}liven{\c{c}}a and {O}bidos ({R}iche y et al., 1989), with an extension of over 100,000 km2 ({M}elack and {H}ess, 2010). {A} major challenge in understanding the {A}mazon fluvial system is evaluating how and to what extent biogeochemical floodplain processes influence the hydrological, chemical and biological dynamics of the {A}mazon {R}iver. {W}e focus our study on one of the largest floodplain systems of the {A}mazon, "{L}ago {G}rande de {C}uruai", which is representative of the central and lower reaches of the {A}mazon basin. {A} ten-year study of the "{V}arzea do {L}ago {G}rande de {C}uruai" floodplain allowed us to obtain a comprehensive understanding of how hydrological and geochemical processes occurring in floodplains alter the dissolved and particulate flux of the {A}mazon {R}iver. {I}n terms of internal hydrological functioning, we demonstrated that floodplain water balances are influenced by direct rainfall, local runoff and seepage as weil as flooding from the river and that the relative importance of different inputs varies seasonally. {R}egarding the sediment and particulate carbon budget of the {C}uruai floodplain, the annual volume of sediment trapped in the floodplain was of the same order of magnitude as the mean annual sediment fluxes outflowing from the floodplain into the {A}mazon {R}iver, and the floodplains act as an important source of particulate and dissolved organic carbon. {T}he water passing through the floodplains undergoes important biogeochemical transformations under the influence of biotic processes, sorption and redox reactions. {F}loodplains also play an important role in the organic carbon balance of the {A}mazon basin. {C}oupling the hydrological model with the database of elemental concentrations, we discuss the conservativity or non-conservativity of certain selected elements and present the mass balance of these elements between the floodplain and the main stream.},
  keywords = {{PLAINE} {INONDABLE} ; {BILAN} {HYDRIQUE} ; {PRECIPITATION} ; {RUISSELLEMENT} ; {INFILTRATION} ; {INONDATION} ; {COURS} {D}'{EAU} ; {METHODOLOGIE} ; {ECHANTILLON} ; {MODELE} {HYDROLOGIQUE} ; {CYCLE} {BIOGEOCHIMIQUE} ; {SEDIMENT} ; {ELEMENT} {CHIMIQUE} {MAJEUR} ; {MATIERE} {ORGANIQUE} {PARTICULEE} ; {MATIERE} {EN} {SOLUTION} ; {CARBONE} {ORGANIQUE} ; {VARIATION} ; {HYDRODYNAMIQUE} ; {EVALUATION} ; {HETEROGENEITE} ; {BRESIL} ; {AMAZONIE} ; {AMAZONE} {COURS} {D}'{EAU} ; {LAGO} {GRANDE} {DE} {CURUAI}},
  booktitle = {{R}iparian zones : charateristics, management practices and ecological impacts},
  numero = {},
  pages = {77--98},
  address = {{N}ew {Y}ork},
  publisher = {{N}ova {P}ubl.},
  series = {{E}nvironmental {R}esearch {A}dvances},
  year = {2016},
  ISBN = {978-1-63484-613-4},
  URL = {https://www.documentation.ird.fr/hor/fdi:010070550},
}