@article{fdi:010088099,
  title = {{C}orals adapted to extreme and fluctuating seawater p{H} increase calcification rates and have unique symbiont communities},
  author = {{T}anvet, {C}. and {C}amp, {E}. {F}. and {S}utton, {J}. and {H}oulbr{\`e}que, {F}anny and {T}houzeau, {G}. and {R}odolfo-{M}etalpa, {R}iccardo},
  editor = {},
  language = {{ENG}},
  abstract = {{O}cean acidification ({OA}) is a severe threat to coral reefs mainly by reducing their calcification rate. {I}dentifying the resilience factors of corals to decreasing seawater p{H} is of paramount importance to predict the survivability of coral reefs in the future. {T}his study compared corals adapted to variable p{H}({T}) (i.e., 7.23-8.06) from the semi-enclosed lagoon of {B}ourake, {N}ew {C}aledonia, to corals adapted to more stable seawater p{H}({T}) (i.e., 7.90-8.18). {I}n a 100-day aquarium experiment, we examined the physiological response and genetic diversity of {S}ymbiodiniaceae from three coral species ({A}cropora tenuis, {M}ontipora digitata, and {P}orites sp.) from both sites under three stable p{H}({NBS}) conditions (8.11, 7.76, 7.54) and one fluctuating p{H}({NBS}) regime (between 7.56 and 8.07). {B}ourake corals consistently exhibited higher growth rates than corals from the stable p{H} environment. {I}nterestingly, {A}. tenuis from {B}ourake showed the highest growth rate under the 7.76 p{H}({NBS}) condition, whereas for {M}. digitata, and {P}orites sp. from {B}ourake, growth was highest under the fluctuating regime and the 8.11 p{H}({NBS}) conditions, respectively. {W}hile {OA} generally decreased coral calcification by ca. 16%, {B}ourake corals showed higher growth rates than corals from the stable p{H} environment (21% increase for {A}. tenuis to 93% for {M}. digitata, with all p{H} conditions pooled). {T}his superior performance coincided with divergent symbiont communities that were more homogenous for {B}ourake corals. {C}orals adapted to variable p{H} conditions appear to have a better capacity to calcify under reduced p{H} compared to corals native to more stable p{H} condition. {T}his response was not gained by corals from the more stable environment exposed to variable p{H} during the 100-day experiment, suggesting that long-term exposure to p{H} fluctuations and/or differences in symbiont communities benefit calcification under {OA}.},
  keywords = {adaptation ; {B}ourake ; calcification ; coral ; natural analogue ; {N}ew {C}aledonia ; ocean acidification ; physiology ; {S}ymbiodiniaceae ; {NOUVELLE} {CALEDONIE}},
  booktitle = {},
  journal = {{E}cology and {E}volution},
  volume = {13},
  numero = {5},
  pages = {e10099 [21 p.]},
  ISSN = {2045-7758},
  year = {2023},
  DOI = {10.1002/ece3.10099},
  URL = {https://www.documentation.ird.fr/hor/fdi:010088099},
}