@article{fdi:010061620,
  title = {{I}sotopic records from archeological giant clams reveal a variable climate during the southwestern {P}acific colonization ca. 3.0 ka {BP} [{P}lus {C}orrigendum]},
  author = {{D}uprey, {N}. and {G}alipaud, {J}ean-{C}hristophe and {C}abioch, {G}uy and {L}azareth, {C}laire {E}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {L}apita colonization,which occurred in the late {H}olocene, is one of the most remarkable prehistorical human colonizations. {T}o explore the possible influence of {E}l {N}iño–{S}outhern {O}scillation ({ENSO}) on this event, bulk oxygen (δ18{O}shell) and carbon (δ13{C}shell) stable isotope records were obtained from eight fossil {T}ridacna sp. and {H}ippopus hippopus giant clams, unearthed from {L}apita archeological sites of {N}ew {C}aledonia and {V}anuatu. {T}hese giant clamswere dated ca. 3.8–2.3 ka {BP}. {T}hese δ18{O}shell and δ13{C}shell records were used as proxies for combined sea surface temperature and salinity and precipitation. {I}n addition, geochemical records were obtained from modern conspecifics from {N}ew {C}aledonia to create a baseline against which fossil giant clam records could be compared. {T}he isotopic records revealed the occurrence of two distinct climate states in {N}ew {C}aledonia ca. 3.2–2.3 ka {BP}: one climate state was characterized by climatic conditions similar to those observed today and the second was comparable to warmer and wetter conditions similar to {V}anuatu's modern climate. {C}onsidering that previous paleo-climate reconstructions in the {W}est {P}acific did not show a shift of the mean climatic state and that they revealed aweak centennial climate variability, our results suggest that the climatic mean state has been alternating between these two states at a decadal or an inter-annual frequency. {T}his strong climate variability recorded in the giant clam shells may reflect an increase in the {ENSO} variability, supporting the hypothesis of an {ENSO}-forced {L}apita colonization as suggested by {A}nderson et al. (2006).},
  keywords = {{HOMME} ; {PREHISTOIRE} ; {HOLOCENE} ; {MIGRATION} ; {PALEOCLIMAT} ; {PALEOGEOGRAPHIE} ; {PALEOENVIRONNEMENT} ; {FOSSILE} ; {COQUILLAGE} ; {ANALYSE} {ISOTOPIQUE} ; {OXYGENE} ; {CARBONE} ; {INTERACTION} {OCEAN} {ATMOSPHERE} ; {EL} {NINO} ; {NOUVELLE} {CALEDONIE} ; {VANUATU} ; {PACIFIQUE}},
  booktitle = {},
  journal = {{P}alaeogeography, {P}alaeoclimatology, {P}alaeoecology},
  volume = {404},
  numero = {},
  pages = {97--108},
  ISSN = {0031-0182},
  year = {2014},
  DOI = {10.1016/j.palaeo.2014.04.002},
  URL = {https://www.documentation.ird.fr/hor/fdi:010061620},
}