Journal
MARINE POLLUTION BULLETIN
Volume 114, Issue 2, Pages 1130-1134Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2016.10.037
Keywords
Noise pollution; Whistles; Acoustic behavior
Funding
- PETROBRAS S/A [4600271434]
- CNPq [PQ-1D]
- FAPERJ (JCNE)
- UERJ (Prociencia)
- CAPES
- Rio de Janeiro State Government Research Agency (FAPERJ)
- Brazilian Research Council (CNPq)
- Cetacean Society International
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This study focused on whistles produced by Guiana dolphin under different noise conditions in Guanabara Bay, southeastern Brazil. Recording sessions were performed with a fully calibrated recording system. Whistles and underwater noise levels registered during two behavioral states were compared separately between two areas. Noise levels differed between the two areas across all frequencies. Whistle duration differed between areas and was negatively correlated with noise levels. Whistling rate was positively correlated with noise levels, showing that whistling rate was higher in noisier conditions. Results demonstrated that underwater noise influenced Guiana dolphin acoustic behavior. (C) 2016 Elsevier Ltd. All rights reserved.
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