Soundscape of a management and exploitation area of benthic resources in central Chile

• Borie, Alfredo ^[1] ; Bezerra, Natalia P.A. ^[2] ; Klarian, Sebastian A.L. ^[3] ; Travassos, Paulo ^[1]
  1. [1] Universidade Federal Rural de Pernambuco
  2. [2] Universidade Federal de Pernambuco
  3. [3] Universidad Andrés Bello

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• Localización: Latin American Journal of Aquatic Research, ISSN-e 0718-560X, ISSN 0716-1069, Vol. 43, Nº. 5, 2015, págs. 993-997
• Idioma: inglés
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  • Acoustic ecology is an emerging and poorly known field of research. Soundscape has been used to infer the behavior of several species in different environments and can serve as a reliable indicator of the habitat type and quality; also, it is believed that it is an important factor for larvae orientation in settlement areas. We used the passive acoustic method to evaluate the soundscape of a management and exploitation area of benthic resources, a rocky reef area in central Chile. It was possible to hear a continuous cracking sound during recording and underwater observations. We detected two distinct frequency bands with similar parameters during the night and day, a band between 90 and 300 Hz, which corresponded to the effects of sea waves (geophony), and a frequency band with a range of 1,500 to 2,700 Hz (biophony), with a fundamental frequency of 2,070 Hz. Both bands had similar energy (~88.0 dB re: 1V/µPa). These results show the relevant acoustic activity in the area, which may have important ecological implications for the recruitment of commercially important benthic resources.