@article{fdi:010093602,
  title = {{D}epth-dependent dynamics and acoustic niche partitioning of fish sounds in mesophotic coral reefs},
  author = {{R}aick, {X}. and {C}ampisi, {J}. and {B}ertucci, {F}r{\'e}d{\'e}ric and {L}ecchini, {D}. and {D}i {I}orio, {L}. and {P}armentier, {E}. and {P}ole, {C}onsortium},
  editor = {},
  language = {{ENG}},
  abstract = {{A}ccording to the acoustic niche hypothesis, the soundscape is a finite resource, theoretically implying that soniferous species whose sounds compose it within a given habitat must share this resource to minimize competition. {H}owever, depth-related patterns in this partitioning are still poorly understood. {T}his study aims to compare the diel dynamics and realized acoustic niches of fish sounds at two depths (60 and 120 m) in mesophotic coral reefs of the {T}uamotu {A}rchipelago, {F}rench {P}olynesia, over a 62-h period. {T}wo complementary objectives are pursued: (1) to investigate depth-related patterns in the diel cycle of fish sounds using generalized additive models, and (2) to assess whether their realized acoustic niches change between depths. {A}lthough most sound types were shared between 60 and 120 m, the study revealed that the dynamics of fish sounds varied significantly between the two depths. {I}t also supported clear diel patterns. {A}s depth increased, frequencymodulated sounds became more prominent at night, while the opposite trend was observed for pulse series sounds. {A}t the community level, acoustic activity was more concentrated during short time periods at night at 120 m. {D}ifferent sound types were either produced at distinct times or differed in pulse period range or frequency spectrum during periods of temporal overlap. {T}he structure of realized acoustic niches also differed between the two depths. {T}he consistent increase in the abundance of frequency-modulated sounds under reduced light conditions (both at night and in deeper waters) may reflect the need for more stereotyped acoustic signals, suggesting a potential adaptation to low-light environments.},
  keywords = {{M}esophotic coral ecosystems ; {P}assive acoustic monitoring ; {E}cological niche ; {B}iophony ; {A}coustic niche hypothesis ; {POLYNESIE} {FRANCAISE} ; {PACIFIQUE}},
  booktitle = {},
  journal = {{E}stuarine {C}oastal and {S}helf {S}cience},
  volume = {322},
  numero = {},
  pages = {109336 [14 ]},
  ISSN = {0272-7714},
  year = {2025},
  DOI = {10.1016/j.ecss.2025.109336},
  URL = {https://www.documentation.ird.fr/hor/fdi:010093602},
}