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Brown meagre vocalization rate increases during repetitive boat noise exposures: A possible case of vocal compensation
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10.1121/1.4756928
/content/asa/journal/jasa/132/5/10.1121/1.4756928
http://aip.metastore.ingenta.com/content/asa/journal/jasa/132/5/10.1121/1.4756928
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Figures

Image of FIG. 1.
FIG. 1.

Examples of the counting of the number of pulses in 10 s of recording containing individual sounds (a) and chorus (b). Each bar indicates one pulse. Sampling frequency 44.1 kHz, 1024 point FFT, Hamming window.

Image of FIG. 2.
FIG. 2.

Comparison between the spectrum of the field recorded boat noises and S. umbra sounds (S) and chorus (C) with the S. umbra audiogram (Codarin et al., 2009). CC: 8.5-m cabin-cruiser with 163-hp inboard diesel engine moving at 6 kn; FB: 5-m fiberglass boat with 40-hp outboard engine moving at 15 kn; INF: 7-m inflatable boat with 130-hp inboard–outboard engine moving at 20 kn.

Image of FIG. 3.
FIG. 3.

Sciaena umbra pulse rate (mean ± S.E.M.) recorded 5 min before (dark gray) and after (light gray) each boat passage in the BOAT condition.

Image of FIG. 4.
FIG. 4.

Sciaena umbra pulse rate (mean ± S.E.M.) recorded following six successive boat passages in the BOAT condition (dark gray) and in the CONTROL condition (light gray).

Image of FIG. 5.
FIG. 5.

No significant change in background noise that included the S. umbra chorus was observed between the BOAT condition (dark gray) and the CONTROL condition (light gray) based on L eq,1 min (equivalent continuous SPL) calculated over the (a) 80 to 2500 Hz frequency band or over the wider (b) 2 to 20 000 Hz frequency band.

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/content/asa/journal/jasa/132/5/10.1121/1.4756928
2012-11-08
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Brown meagre vocalization rate increases during repetitive boat noise exposures: A possible case of vocal compensation
http://aip.metastore.ingenta.com/content/asa/journal/jasa/132/5/10.1121/1.4756928
10.1121/1.4756928
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