Mapping cetacean sounds using a passive acoustic monitoring system towed by an autonomous Wave Glider in the Southwestern Atlantic Ocean

Bittencourt, Lis; Soares-Filho, William; Lima, Isabela Maria Seabra de; Pai, Sudhir; Lailson‐Brito, José; Barreira, Leonardo M.; Azevedo, Alexandre F.; Guerra, Luiz Alexandre A.

doi:10.1016/j.dsr.2018.10.006

Cited by 18 publications

(9 citation statements)

References 59 publications

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“…The S. bredanensis population was not present year‐round, although photographic recaptures supported a certain fidelity to this shallow‐water environment in the SWAO. Because this species exhibits long‐distance movements along the southeastern Brazilian coast (Lodi et al, 2012; Santos et al, 2019), the studied individuals must have a broader home range than the study area, probably also including oceanic waters, as supported by observations in the outer continental shelf and oceanic waters 150–4,000 m deep in the SWAO (Bittencourt et al, 2018; Di Tullio et al, 2016). Broad home ranges were also implied by population genetics, which found no evidence of subdivision in southeastern Brazil (Silva et al, 2015).…”

Section: Introductionmentioning

confidence: 82%

Shallow‐water habitat use and population parameters of rough‐toothed dolphins, Steno bredanensis (G. Cuvier in Lesson, 1828) in southeastern Brazil

Carvalho

Lailson‐Brito

Kajin

et al. 2020

Marine Mammal Science

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The rough-toothed dolphin (Steno bredanensis) is a poorly known species along its distribution especially in the Southern Hemisphere where data on habitat use and population parameters are scarce. Boat-based surveys were conducted from 2009 to 2017 in a shallow water environment in southeastern Brazil. During focal-group observations, S. bredanensis was more commonly found in mean depths of 22 m with varying group size and composition. Generalized additive models showed that group size was influenced by environmental variables such as sea surface and bottom temperatures, depth, and season. Photo-identification effort allowed us to catalogue 173 well-distinct marked individuals. Estimates of population parameters showed high and constant survival (Φ = 0.99) corroborating site fidelity but time varying capture probabilities (p = .03-.71). An open population model also indicated a small abundance estimate (Nt = 218) of S. bredanensis in the study area, improving knowledge for this species in shallow water environments of the southwestern Atlantic Ocean.

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Section: Introductionmentioning

confidence: 82%

Shallow‐water habitat use and population parameters of rough‐toothed dolphins, Steno bredanensis (G. Cuvier in Lesson, 1828) in southeastern Brazil

Carvalho

Lailson‐Brito

Kajin

et al. 2020

Marine Mammal Science

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“…Vocalization types with universal characteristics readily identifiable for the species have been identified (Figueiredo & Simão, 2014;Oleson et al, 2003). These characteristics have been used to identify vocalizations of Bryde's whale from acoustic data collected with autonomous acoustic recorders from various part of the Pacific and Atlantic Oceans (Bittencourt et al, 2018;Brodie & Dunn, 2015;Heimlich et al, 2005;Helble et al, 2016;Kerosky et al, 2012;Putland, Ranjard, et al, 2018;Rice et al, 2014;Širovi c et al, 2014;Viloria-G omora et al, 2021; Table 1).…”

Section: Introductionmentioning

confidence: 99%

Vocalization of Bryde's whales (Balaenoptera edeni) in the Beibu Gulf, China

Wang

Duan

Chen

et al. 2022

Marine Mammal Science

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The presence of Bryde's whales (Balaenoptera edeni) in the Beibu Gulf, China has been reported since 2016. In the current study, in situ Bryde's whale vocalizations were recorded. Bouts of frequency modulated repetitive and diversified calls were recorded. Repetitive calls were recorded when 1–3 whales were present within 2 km of the boat and were probably emitted by a single whale and functioned as contact calls. Repetitive calls were divided into biphonation downswept tonals and downswept tonals. Diversified calls were recorded when 4–7 whales were present within 2 km of the boat and were probably associated with acoustic exchanges between or among conspecifics. Diversified calls occasionally contained inflection points, frequency jumps, and break point features. The frequency band of Bryde's whale vocalizations overlapped highly with background noise. Most vocalizations in the current study were different than those previously reported for this species. Therefore, the findings of this study provide more information on the known acoustic repertoire of Bryde's whales and provide a basis for noninvasive monitoring of Bryde's whale with passive acoustic methods and for developing mitigation and conservation protocols to ensure their future viability.

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“…In the Southern Atlantic Ocean, an ocean-wave-propelled autonomous surface vehicle wave gliders equipped with a towed hydrophone and recording system was used to collect acoustic data between 6 and 25 February 2016 [9]. In such a short time, the system travelled for 750 km, and it detected 165,130 high-frequency signals in 31 encounters, including 1789 whistles, 389 burst-pulse sounds, and 162,952 echolocation clicks.…”

Section: Passive Acoustic Systems Without Real-time Data Transmissionmentioning

confidence: 99%

Real-Time Continuous Acoustic Monitoring of Marine Mammals in the Mediterranean Sea

Sanguineti

Guidi

Kulikovskiy

et al. 2021

JMSE

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The passive acoustic monitoring of cetaceans is a research method that can provide unique information on the animal’s behaviour since the animals can be studied at great depths and at a long-range without interference. Nevertheless, the real-time data collection, transfer, and analysis using these techniques are difficult to implement and maintain. In this paper, a review of several experiments that have used this approach will be provided. The first class of detectors consists of hydrophone systems housed under buoys on the sea surface with wireless data transmission, while the second type comprises several acoustic detector networks integrated within submarine neutrino telescopes cabled to the shore.

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Mapping cetacean sounds using a passive acoustic monitoring system towed by an autonomous Wave Glider in the Southwestern Atlantic Ocean

Cited by 18 publications

References 59 publications

Shallow‐water habitat use and population parameters of rough‐toothed dolphins, Steno bredanensis (G. Cuvier in Lesson, 1828) in southeastern Brazil

Shallow‐water habitat use and population parameters of rough‐toothed dolphins, Steno bredanensis (G. Cuvier in Lesson, 1828) in southeastern Brazil

Vocalization of Bryde's whales (Balaenoptera edeni) in the Beibu Gulf, China

Real-Time Continuous Acoustic Monitoring of Marine Mammals in the Mediterranean Sea

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