@inproceedings{fdi:010071199,
  title = {320 years of sea surface p{H} and {SST} variability in the {S}outh {P}acific inferred from {D}iploastrea heliopora coral proxy records [r{\'e}sum{\'e}]},
  author = {{W}u, {H}. and {D}issard, {D}elphine and {D}ouville, {E}. and {B}lamart, {D}. and {B}ordier, {L}. and {D}apoigny, {A}. and {L}e {C}ornec, {F}lorence and {T}ribollet, {A}line and {L}azareth, {C}laire},
  editor = {},
  language = {{ENG}},
  abstract = {{M}arine calcifying organisms are under threat from global climate change. {O}cean acidification ({OA}) and warming sea surface temperature ({SST}) are the results from increasing anthropogenic {CO}2 emissions. {I}t is thus important to better understand how marine ecosystems and reef-building corals have responded to climate change pressures relative to historical p{H} and {SST} variability. {T}o constrain the natural variability of p{H} and provide baseline reconstruction and quantification for {OA}, we measured delta 11{B} composition in an annually banded modern {D}iploastrea heliopora massive coral colony from {N}ew {C}aledonia in the southwestern {P}acific. {T}his coral displays uninterrupted growth between 1690-2010 {CE} covering historical periods from the termination of the {M}aunder {M}inimum (ca. 1690-1715 {CE}) through the beginning of the {I}ndustrial {R}evolution (ca. 1760-1830 {CE}) and into the modern era (1900 {CE} to present). {T}he most striking feature from our p{H} reconstruction is the evidence of {OA} (decrease in sea surface p{H}) based on the depleting delta 11{B} ratio in the most recent portion of the record. {T}he distinct trend of decreasing delta 13{C} ratio in this coral documents and confirms the {S}uess {E}ffect due to increase in anthropogenic atmospheric {CO}2 concentration. {T}his modern decrease in reconstructed p{H} is concurrent to the significant warming trend of at least 1 º{C} as revealed by our coral-based {SST} proxies (i.e., {S}r/{C}a, {L}i/{M}g, and delta 18{O}). {T}he interannual and longer-term decadal to interdecadal variability of our proxy records indicate a coupled anti-phase relationship between p{H} and {SST} reflecting similar climatic drivers related to the {E}l {N}iño/{S}outhern {O}scillation ({ENSO}) and {P}acific {D}ecadal {O}scillation. {O}ur results support the potential of this coral genus as an archive to study global climate change where the lower frequency variability of {S}outh {P}acific p{H} and {SST} are strongly modulated by {ENSO} and are coherent with records across the greater {P}acific basin.},
  keywords = {{PACIFIQUE}},
  numero = {},
  pages = {1  [en ligne]},
  booktitle = {},
  year = {2017},
  URL = {https://www.documentation.ird.fr/hor/fdi:010071199},
}