Documenting and Assessing Dolphin Calls and Ambient and Anthropogenic Noise Levels via PAM and a SPL Meter.
EFFECTS OF NOISE ON AQUATIC LIFE II(2016)
摘要
Song Meter SM2M marine recorders were deployed to document dolphin calls and ambient and anthropogenic noise. Recordings from Bimini were split into 2-h segments; no segment was without dolphin calls. At Dolphin Encounters, average noise levels ranged from 110 to 125 dB; the highest source level was 147.98 dB re 1 mu Pa at 1 m. Average ambient-noise levels documented at 4 sites in Guam were below 118 dB re 1 mu Pa at 1 m. These data were compared with values from a custombuilt sound pressure level (SPL) meter and confirm that the SM2M recorder is a useful tool for assessing animal calls and ambient and anthropogenic noise levels.
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关键词
Autonomous passive acoustic monitoring,Ambient-noise levels,Vocalizations,Marine mammal monitoring
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