@article{fdi:010096004,
  title = {{H}igh thermotolerance to extreme marine heatwaves for four {N}ew {C}aledonian sponges},
  author = {{G}raham, {B}. {J}. and {D}avy, {S}. {K}. and {W}oods, {L}. and {T}homas, {T}. and {R}odolfo-{M}etalpa, {R}iccardo and {B}ell, {J}. {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{M}arine heatwaves ({MHW}s) are increasingly recognised as a more immediate threat to the persistence of coral reefs than the longer-term impacts of climate change. {H}owever, major gaps still exist in our understanding of {MHW} impacts on many reef organisms. {S}ponges are functionally important on coral reefs globally. {D}espite earlier research showing that many sponges have high thermal tolerances, there are currently no data on how {N}ew {C}aledonian reef sponges will respond to {MHW}s. {W}e conducted a simulated {MHW} aquarium experiment on four ecologically important {N}ew {C}aledonian sponges from two abiotically contrasting sites. {W}e hypothesised that sponges from the highly fluctuating and thermally extreme {B}ourake site would show thermal tolerance, and those from the more stable {N}oumea lagoon ({NL}) would be sensitive to short-term temperature increase. {S}ignificant sublethal effects on respiration and photosynthetic efficiency were found in {C}liona orientalis (both sites) and {S}pheciospongia vagabunda ({NL}), while {R}habdastrella globostellata ({B}ourake) and {C}liona jullieni ({NL}) exhibited only minor signs of stress up to +4 degrees {C} and +6 degrees {C}, respectively, above their site-specific monthly mean temperature (26 degrees {C} at {NL}; 28 degrees {C} at {B}ourake). {A}bove similar to 33.5 degrees {C}, both {B}ourake species presented sudden and acute stress (bleaching, necrosis and mortality). {A}ll four species showed tolerance up to at least 32 degrees {C}, suggesting relatively high thermal thresholds, with specimens of {C}. orientalis displaying similar thermal tolerance to 32 degrees {C} independent of their collection site. {T}hese findings support the notion that tropical sponges can persist under future warming and {MHW} scenarios.},
  keywords = {{B}leaching ; {B}ourake ; {C}oral reef ; {O}cean warming ; {P}orifera ; {T}hermal tolerance ; {NOUVELLE} {CALEDONIE}},
  booktitle = {},
  journal = {{M}arine {P}ollution {B}ulletin},
  volume = {224},
  numero = {},
  pages = {119138 [10 p.]},
  ISSN = {0025-326{X}},
  year = {2026},
  DOI = {10.1016/j.marpolbul.2025.119138},
  URL = {https://www.documentation.ird.fr/hor/fdi:010096004},
}