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Snapshot recordings provide a first description of the acoustic signatures of deeper habitats adjacent to coral reefs of Moorea
Bertucci, F.; Parmentier, E.; Berthe, C.; Besson, M.; Hawkins, A.D.; Aubin, T.; Lecchini, D. (2017). Snapshot recordings provide a first description of the acoustic signatures of deeper habitats adjacent to coral reefs of Moorea. PeerJ 5: e4019. https://dx.doi.org/10.7717/peerj.4019
In: PeerJ. PeerJ: Corte Madera & London. ISSN 2167-8359; e-ISSN 2167-8359
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| Trefwoord |
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| Author keywords |
Ecoacoustics; Mesophotic reefs; Passive acoustics; Conservation; Coralreefs |
| Auteurs | | Top |
- Bertucci, F.
- Parmentier, E.
- Berthe, C.
- Besson, M.
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- Hawkins, A.D.
- Aubin, T.
- Lecchini, D.
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| Abstract |
Acoustic recording has been recognized as a valuable tool for non-intrusive monitoring of the marine environment, complementing traditional visual surveys. Acoustic surveys conducted on coral ecosystems have so far been restricted to barrier reefs and to shallow depths (10-30 m). Since they may provide refuge for coral reef organisms, the monitoring of outer reef slopes and describing of the soundscapes of deeper environment could provide insights into the characteristics of different biotopes of coral ecosystems. In this study, the acoustic features of four different habitats, with different topographies and substrates, located at different depths from 10 to 100 m, were recorded during day-time on the outer reef slope of the north Coast of Moorea Island (French Polynesia). Barrier reefs appeared to be the noisiest habitats whereas the average sound levels at other habitats decreased with their distance from the reef and with increasing depth. However, sound levels were higher than expected by propagation models, supporting that these habitats possess their own sound sources. While reef sounds are known to attract marine larvae, sounds from deeper habitats may then also have a non-negligible attractive potential, coming into play before the reef itself. |
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