@article{fdi:010076849,
  title = {{S}easonal oxygen isotope variations in freshwater bivalve shells as recorders of {A}mazonian rivers hydrogeochemistry},
  author = {{G}aillard, {B}. and {L}azareth, {C}laire and {L}estrelin, {G}. and {D}ufour, {E}. and {S}antos, {R}.{V}. and {F}reitas, {C}.{E}.{C}. and {P}ouilly, {M}arc},
  editor = {},
  language = {{ENG}},
  abstract = {{F}reshwater bivalve shell oxygen isotope values (delta {O}-18({S})) may act as a recorder of river delta {O}-18 variations that can then be interpreted in terms of hydrology (e.g. precipitation-evaporation balance, precipitation and river discharge patterns). {W}e investigated the potential of this proxy measured across the hinge of {S}outh {A}merican unionid shells: {A}nodontites elongatus collected in {P}eru and {A}. trapesialis in {B}razil. {T}he isotopic signatures were reproducible between individuals of the same species. {A}. trapesialis clearly showed a strong delta {O}-18({S}) cyclicity in accordance with its growth patterns while {A}. elongatus presented less clear delta {O}-18({S}) with lower amplitude. {W}e confirm that the deposition of successive growth lines and increments is annual, with growth line corresponding to the wet season. {A}lso, we suggest that low amplitude of delta {O}-18({S}) in the {A}. elongatus shells indicates a habitat close to the river while large amplitude of delta {O}-18({S}) cycles observed in {A}. trapesialis shells would reflect a floodplain lake habitat, seasonally disconnected from the river and thus subjected to higher seasonal fluctuations in water delta {O}-18. {C}onsidering these promising first results, future studies could be directed towards the use of fossil shells to reconstruct the past and present hydrological and geochemical conditions of the {A}mazon.},
  keywords = {{AMAZONIE} ; {PEROU} ; {BRESIL} ; {AMAZONE} {BASSIN}},
  booktitle = {},
  journal = {{I}sotopes in {E}nvironmental and {H}ealth {S}tudies},
  volume = {55},
  numero = {6},
  pages = {511--525},
  ISSN = {1025-6016},
  year = {2019},
  DOI = {10.1080/10256016.2019.1666120},
  URL = {https://www.documentation.ird.fr/hor/fdi:010076849},
}