Mapping widespread and increasing underwater noise pollution from acoustic deterrent devices

Findlay, Charlotte R.; Ripple, H.D.; Coomber, Frazer; Froud, K.; Harries, O.; Geel, Nienke C. F. van; Calderan, SV; Benjamins, Steven; Risch, Denise; Wilson, Ben

doi:10.1016/j.marpolbul.2018.08.042

Cited by 29 publications

(21 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, behavioural research into high-resolution swimming kinematics and dive behaviour of seals could benefit greatly from the kinds of detection and tracking information collected using sonar systems such as the one tested here (e.g. This has led to the use of acoustic deterrent devices (ADDs) in an effort to deter seals from fish cages; however, the increasing use of these devices has led to concerns about long-term effects on non-target species, such as cetaceans (Findlay et al, 2018;Nowacek, Thorne, Johnston, & Tyack, 2007). There is also the potential that the approach could be used to increase the efficiency of mitigation around high-risk activities.…”

Section: Figurementioning

confidence: 99%

“…For example, fish predation by seals at marine aquaculture sites is often perceived as problematic from a commercial perspective (Quick, Middlemas, & Armstrong, 2004). This has led to the use of acoustic deterrent devices (ADDs) in an effort to deter seals from fish cages; however, the increasing use of these devices has led to concerns about long-term effects on non-target species, such as cetaceans (Findlay et al, 2018;Nowacek, Thorne, Johnston, & Tyack, 2007). In theory, the detection and classification capabilities of multibeam sonar shown in the current study provide the basis to target ADD use to times when seals are detected, thereby reducing unnecessary acoustic emissions.…”

Section: Figurementioning

confidence: 99%

See 1 more Smart Citation

Automated detection and tracking of marine mammals: A novel sonar tool for monitoring effects of marine industry

Hastie

Moss

et al. 2019

Aquatic Conservation

View full text Add to dashboard Cite

1. Many marine industries may pose acute risks to marine wildlife. For example, tidal turbines have the potential to injure or kill marine mammals through collisions with turbine blades. However, the quantification of collision risk is currently limited by a lack of suitable technologies to collect long-term data on marine mammal behaviour around tidal turbines.2. Sonar provides a potential means of tracking marine mammals around tidal turbines. However, its effectiveness for long-term data collection is hindered by the large data volumes and the need for manual validation of detections. Therefore, the aim here was to develop and test automated classification algorithms for marine mammals in sonar data.3. Data on the movements of harbour seals were collected in a tidally energetic environment using a high-frequency multibeam sonar on a custom designed seabedmounted platform. The study area was monitored by observers to provide visual validation of seals and other targets detected by the sonar.4. Sixty-five confirmed seals and 96 other targets were detected by the sonar. Movement and shape parameters associated with each target were extracted and used to develop a series of classification algorithms. Kernel support vector machines were used to classify targets (seal vs. nonseal) and cross-validation analyses were carried out to quantify classifier efficiency.5. The best-fit kernel support vector machine correctly classified all the confirmed seals but misclassified a small percentage of non-seal targets (~8%) as seals. Shape and non-spectral movement parameters were considered to be the most important in achieving successful classification.6. Results indicate that sonar is an effective method for detecting and tracking seals in tidal environments, and the automated classification approach developed here provides a key tool that could be applied to collecting long-term behavioural data around anthropogenic activities such as tidal turbines.

show abstract

Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Automated detection and tracking of marine mammals: A novel sonar tool for monitoring effects of marine industry

Hastie

Moss

et al. 2019

Aquatic Conservation

View full text Add to dashboard Cite

show abstract

“…On the west coast of Scotland, the use of AHDs has increased, with one study recording an increase in AHD detections from 2006 (0.05%) to 2016 (6.8%), with highest number of detections in 2013 (12.6%), as well as substantial geographic expansion. 9 This study ascertains the acoustic characteristics for three models of AHDs that were deployed from an inshore fish farm on the West coast of Scotland, UK, in the Sound of Mull, and through comparison with known marine mammal hearing ranges, determined the ranges at which AHDs are audible potentially to five marine mammal species present within the survey region: harbour porpoise, bottlenose dolphin, killer whale, grey, and common seal.…”

Section: Introductionmentioning

confidence: 99%

Potential Audibility of Three Acoustic Harassment Devices (AHDs) to Marine Mammals in Scotland, UK

Todd¹,

Jiang

Ruffert³

2019

The International Journal of Acoustics and Vibration

View full text Add to dashboard Cite

The modelled acoustic characteristics of three Acoustic Harassment Devices (AHDs) deployed from a fully operational salmonid fish farm, located in the Sound of Mull, Scotland (UK) are presented, using empirical seabed and water column measurements at the same location. In the Beaufort Sea state 0, the depth range of 10--50 m is the maximum range at which AHDs are potentially audible to five marine mammal species. The species present within this survey region are: the harbour porpoise, Phocoena phocoena (99.1 km), the killer whale, Orcinus orca (110 km), the bottlenose dolphin, Tursiops truncatus (89.6 km), the common seal, Phoca vitulina (88 km), and the grey seal, Halichoerus grypus (69 km). Consequently, within the Sound of Mull, all three AHDs could be heard throughout the water column by all species. For two models of AHDs, a behavioural disturbance level of between 140 dB-180 dB is observed at 1.3 km. Habitat displacement is a cause for concern, particularly if several fish farms within a small area all deploy AHDs simultaneously. This can create a confusing sound field of varying intensity, which has potential to deter harbour porpoises from sections of their habitat. If positioned effectively, AHDs have the potential to deter all five marine mammal species from industrial operations such as aquaculture facilities. Source levels, propagation and transmission loss measurements were highly variable and should be considered as site specific, meaning new estimates should be made for each situation.

show abstract

“…Acoustic methods are increasingly being used to reduce cetacean-fishery conflicts, minimize bycatch, and keep marine mammals away from operations that might be harmful to the animals themselves (Findlay et al, 2018). The use of acoustic deterrent devices (ADDs), also known as pingers or simple acoustic alarms, is a non-lethal method that produces sounds within the hearing range of the target species.…”

mentioning

confidence: 99%

“…The use of acoustic deterrent devices (ADDs), also known as pingers or simple acoustic alarms, is a non-lethal method that produces sounds within the hearing range of the target species. Their aim is to deter depredating species from approaching and damaging fishing gear (Findlay et al, 2018), to prevent loss of catch (Gazo, Gonzalvo & Aguilar, 2008;Buscaino et al, 2009;Waples et al, 2013), and to avoid bycatch of the depredating species themselves (Cox et al, 2004). Most ADDs emit sounds in the range 2-40 kHz, with source levels <150 dB re 1 μPa @ 1 m (Dawson et al, 2013).…”

mentioning

confidence: 99%

Artisanal fishing, dolphins, and interactive pinger: A study from a passive acoustic perspective

Buscaino

Ceraulo

Alonge

et al. 2021

Aquatic Conservation

View full text Add to dashboard Cite

show abstract

Mapping widespread and increasing underwater noise pollution from acoustic deterrent devices

Cited by 29 publications

References 19 publications

Automated detection and tracking of marine mammals: A novel sonar tool for monitoring effects of marine industry

Automated detection and tracking of marine mammals: A novel sonar tool for monitoring effects of marine industry

Potential Audibility of Three Acoustic Harassment Devices (AHDs) to Marine Mammals in Scotland, UK

Artisanal fishing, dolphins, and interactive pinger: A study from a passive acoustic perspective

Contact Info

Product

Resources

About