Full Description

"For the creation of the artificial tracks used for the CE, three types of fish sounds were selected (Supplementary Fig. 1a): (i) the Sciaena umbra (peak freq. 250 Hz, 1st quartile freq. 187 Hz, 3rd quartile freq. 406 Hz, recorded in the Adriatic Sea, Italy7), (ii) the “Kwa” (peak freq. 781 Hz, 1st quartile freq. 681 Hz, 3rd quartile freq. 1187 Hz, unidentified fish sounds from Mediterranean Posidonia oceanica meadows; sound recorded in Sardinia, Italy35), and (iii) Ophidion rochei (peak freq. 281 Hz, 1st quartile freq. 156 Hz, 3rd quartile freq. 312 Hz, recorded by L. Kéver in Calvi, France)."

Observation Environment Quotes

"A mini-Digital Spectrogram Long-Term Acoustic Recorder (DSG, hydrophone sensitivity; _180 dB re 1 V/µPa, Loggerhead Instruments, FL, USA) was deployed on a sandy bottom (40 m depth) in front of STARESO, in Calvi, Corsica (France; 42.5801°N, 8.7285°E). The DSG recorded five minutes per hour at a sample rate of 20 kHz, from 7 June 2013 to 2 July 2013 (Nrecordings =613; 25 days on a 24-hour cycle)."