357
Nowadays, with the decrease on equipment costs, establishment of partnerships
between researchers around the world, software tools available as free share-ware,
the potential for studies of acoustic ecology is growing. However, the quality of the
results still need to improve with the establishment of standard protocols for data
collection, analysis and description of acoustic results (Erbe et al. 2016).
13.5 Conclusion
Dolphins are highly socialized animals, using sounds for communication and foraging, as well as for many other aspects in their life, directly being influenced by the
acoustic habitat. We can conclude that the anthropogenic noises described here have
the potential to affect the Guiana dolphin’s ecology on the studied areas.
Sotalia guianensis is a marine ecosystem sentinel, species that reflect the quality
of the marine coast habitat that it live. The discussions in this chapter contribute to
the species knowledge and the influence caused by anthropogenic noise on these
animals, allowing for an evaluation of potential acoustic impacts of human activities
on marine ecosystems.
Nowadays, anthropogenic noise represents one of the biggest problems facing
oceans conservation. Bioacoustics studies are extremely important to support management actions, offering data about acoustic habitats and ecology of aquatic species, helping to stablish preservation measurements, restrictions and limits of
acoustic parameters, for the management of use and exploitation of aquatic ambient
by humans.
References
Andersen MS, Miller ML (2006) Onboard marine environmental education: Whale
watching in the San Juan Islands, Washington. Tour Mar Environ 2(2):111–118.
doi:10.3727/154427306779436327
Andrade L, Siciliano S, Capistrano L (1987) Movimentos e atividades do boto Sotalia guianensis (Cetacea, Delphinidae) na baía de Guanabara - Rio de Janeiro. In: Reunião de trabalho
de especialistas em mamíferos aquáticos da América do Sul, 2. Fundação Brasileira para a
Conservação da Natureza, Rio de Janeiro, pp 49–55
Andrade LG, Lima IMS, Macedo HS, Carvalho RR, Lailson-Brito J, Flach L, Azevedo AF (2014)
Variation in Guiana dolphin (Sotalia guianensis) whistles: using a broadband recording system to analyze acoustic parameters in three areas of southeastern Brazil. Acta Ethologica
18(1):47–57
Andrade LG, Lima IMS, Bittencourt L, Bisi TL, Lailson-Brito J Jr, Azevedo AF (2015) Highfrequency whistles of Guiana dolphins (Sotalia guianensis) in Guanabara Bay, southeastern
Brazil. J Acoust Soc Am 137(1):15–19
Andrew RK, Howe BM, Mercer JA, Dzieciuch MA (2002) Ocean ambient sound: Comparing
the 1960’s with the 1990’s for a receiver off the California coast. Acoust Res Lett 3(2):65–70
Araújo JP, Passavante JZO, Souto AS (2003) Behavior of the estuarine dolphin, Sotalia guianensis,
at Dolphin Bay - Pipa - Rio Grande do Norte - Brazil. Trop Oceanogr 31(2):101–112
13 Anthropogenic Noise and Guiana Dolphins (Sotalia guianensis) in Brazil…
Nowadays, with the decrease on equipment costs, establishment of partnerships
between researchers around the world, software tools available as free share-ware,
the potential for studies of acoustic ecology is growing. However, the quality of the
results still need to improve with the establishment of standard protocols for data
collection, analysis and description of acoustic results (Erbe et al. 2016).
13.5 Conclusion
Dolphins are highly socialized animals, using sounds for communication and foraging, as well as for many other aspects in their life, directly being influenced by the
acoustic habitat. We can conclude that the anthropogenic noises described here have
the potential to affect the Guiana dolphin’s ecology on the studied areas.
Sotalia guianensis is a marine ecosystem sentinel, species that reflect the quality
of the marine coast habitat that it live. The discussions in this chapter contribute to
the species knowledge and the influence caused by anthropogenic noise on these
animals, allowing for an evaluation of potential acoustic impacts of human activities
on marine ecosystems.
Nowadays, anthropogenic noise represents one of the biggest problems facing
oceans conservation. Bioacoustics studies are extremely important to support management actions, offering data about acoustic habitats and ecology of aquatic species, helping to stablish preservation measurements, restrictions and limits of
acoustic parameters, for the management of use and exploitation of aquatic ambient
by humans.
References
Andersen MS, Miller ML (2006) Onboard marine environmental education: Whale
watching in the San Juan Islands, Washington. Tour Mar Environ 2(2):111–118.
doi:10.3727/154427306779436327
Andrade L, Siciliano S, Capistrano L (1987) Movimentos e atividades do boto Sotalia guianensis (Cetacea, Delphinidae) na baía de Guanabara - Rio de Janeiro. In: Reunião de trabalho
de especialistas em mamíferos aquáticos da América do Sul, 2. Fundação Brasileira para a
Conservação da Natureza, Rio de Janeiro, pp 49–55
Andrade LG, Lima IMS, Macedo HS, Carvalho RR, Lailson-Brito J, Flach L, Azevedo AF (2014)
Variation in Guiana dolphin (Sotalia guianensis) whistles: using a broadband recording system to analyze acoustic parameters in three areas of southeastern Brazil. Acta Ethologica
18(1):47–57
Andrade LG, Lima IMS, Bittencourt L, Bisi TL, Lailson-Brito J Jr, Azevedo AF (2015) Highfrequency whistles of Guiana dolphins (Sotalia guianensis) in Guanabara Bay, southeastern
Brazil. J Acoust Soc Am 137(1):15–19
Andrew RK, Howe BM, Mercer JA, Dzieciuch MA (2002) Ocean ambient sound: Comparing
the 1960’s with the 1990’s for a receiver off the California coast. Acoust Res Lett 3(2):65–70
Araújo JP, Passavante JZO, Souto AS (2003) Behavior of the estuarine dolphin, Sotalia guianensis,
at Dolphin Bay - Pipa - Rio Grande do Norte - Brazil. Trop Oceanogr 31(2):101–112
13 Anthropogenic Noise and Guiana Dolphins (Sotalia guianensis) in Brazil…