Seasonal soundscapes from three ocean basins: what is driving the differences?

Miksis‐Olds, Jennifer L.; Smith, Chad M.; Hawkins, Russell S.; Bradley, David L.

doi:10.1121/1.4772730

Cited by 7 publications

(3 citation statements)

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“…While the geophonic components of underwater soundscapes have been studied for the last halfcentury (Knudsen et al 1948, Wenz 1962, Hildebrand 2009), an emphasis on biophony has been more recent (Slabbekoorn & Bouton 2008, Fay 2009, Pijanowski et al 2011b, Miksis-Olds et al 2012, McWilliam & Hawkins 2013. Classical bioacoustic research typically focuses on a single species in isolation, without considering the acoustic properties of the entire habitat (Krause 1987).…”

Section: Introductionmentioning

confidence: 99%

Celestial patterns in marine soundscapes

Staaterman

Paris

DeFerrari

et al. 2014

Mar. Ecol. Prog. Ser.

145

125

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Section: Introductionmentioning

confidence: 99%

Celestial patterns in marine soundscapes

Staaterman

Paris

DeFerrari

et al. 2014

Mar. Ecol. Prog. Ser.

145

125

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“…Monitoring low-frequency shipping noise can be challenging due to coinciding biological sound sources (e.g., whales, seals); however, energy detectors are an effective and adequate tool that can be applied to discriminate distinctive biological, anthropogenic, and natural physical sounds and then determine the approximate energy contribution of each source. There are currently no established U.S. standards for monitoring shipping noise in U.S. waters, though 40-60 Hz is a historically used frequency range regularly selected as proxy for all shipping noise (see: McDonald et al, 2006;McKenna et al, 2012b;Miksis-Olds et al, 2012;Širović et al, 2013). However, in the European Union, two one-third octave bands, centered at 63 and 125 Hz, are used as sound pressure level indicators for underwater ambient noise levels driven by shipping activity (EC Decision 2017/848).…”

Section: Introductionmentioning

confidence: 99%

Large Vessel Activity and Low-Frequency Underwater Sound Benchmarks in United States Waters

et al. 2021

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Chronic low-frequency noise from commercial shipping is a worldwide threat to marine animals that rely on sound for essential life functions. Although the U.S. National Oceanic and Atmospheric Administration recognizes the potential negative impacts of shipping noise in marine environments, there are currently no standard metrics to monitor and quantify shipping noise in U.S. marine waters. However, one-third octave band acoustic measurements centered at 63 and 125 Hz are used as international (European Union Marine Strategy Framework Directive) indicators for underwater ambient noise levels driven by shipping activity. We apply these metrics to passive acoustic monitoring data collected over 20 months in 2016–2017 at five dispersed sites throughout the U.S. Exclusive Economic Zone: Alaskan Arctic, Hawaii, Gulf of Mexico, Northeast Canyons and Seamounts Marine National Monument (Northwest Atlantic), and Cordell Bank National Marine Sanctuary (Northeast Pacific). To verify the relationship between shipping activity and underwater sound levels, vessel movement data from the Automatic Identification System (AIS) were paired to each passive acoustic monitoring site. Daily average sound levels were consistently near to or higher than 100 dB re 1 μPa in both the 63 and 125 Hz one-third octave bands at sites with high levels of shipping traffic (Gulf of Mexico, Northeast Canyons and Seamounts, and Cordell Bank). Where cargo vessels were less common (the Arctic and Hawaii), daily average sound levels were comparatively lower. Specifically, sound levels were ∼20 dB lower year-round in Hawaii and ∼10-20 dB lower in the Alaskan Arctic, depending on the season. Although these band-level measurements can only generally facilitate differentiation of sound sources, these results demonstrate that international acoustic indicators of commercial shipping can be applied to data collected in U.S. waters as a unified metric to approximate the influence of shipping as a driver of ambient noise levels, provide critical information to managers and policy makers about the status of marine environments, and to identify places and times for more detailed investigation regarding environmental impacts.

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“…The study of stranded marine mammals can provide valuable insight into the magnitude of these threats and their consequences, including cause of death (Pyenson, 2011;Tomo and Kemper, 2022). The causes of strandings can be qualified and known factors can include fisheries interactions, including bycatch, ship strikes, pollution (both noise and chemical) and pathogens in the region as economic activities intensify in the ocean space (Natoli et al, 2007;Kiszka et al, 2009a;Miksis-Olds et al, 2012;Anderson, 2014;Das et al, 2016;Dirtu et al, 2016;Peltier et al, 2016;de Quirós et al, 2018;Anderson et al, 2020;Puig-Lozano et al, 2020;Schoeman et al, 2020;Mwango'mbe et al, 2021;Plön and Roussouw, 2022;Roussouw et al, 2022). Chemical pollution and pathogens also pose potential risks for coastal human populations (Landrigan et al, 2020).…”

Section: Importance Of Data From Strandingsmentioning

confidence: 99%

Spatio-temporal trends in cetacean strandings and response in the south-western Indian Ocean: 2000-2020

Plön,

Norman,

Adam

et al. 2023

jcrm

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The south-western Indian Ocean (SWIO) is a region of global importance for marine mammal biodiversity, but our understanding of most of the species and populations found there is still rudimentary. The Indian Ocean Network for Cetacean Research (IndoCet) was formed in 2014 and is dedicated to the research of all cetacean species across the SWIO. Since 2019, there have been efforts to create a regional network for coordinated response to stranding events as well as training and capacity building in the SWIO region. The present analysis represents a first investigation of stranding data collected by various members and collaborators within the IndoCet network, covering over 14,800km of coastline belonging to nine countries/territories. Between 2000-2020, there were 397 stranding events, representing 1,232 individual animals, 17 genera and 27 species, belonging to six families: four balaenopterids, one balaenid, one physeterid, two kogiids, six ziphiids and 14 delphinids. Seven mass strandings were recorded: two were composed of three to 20 individuals and five composed of >20 individuals. Spatial analysis of stranding events indicated that local spatio-temporal clusters (excessive number of events in time and geographic space) were present in all countries/territories, except for the Comoros. The only significant cluster was detected on the southwest coast of Mauritius, just west of the village of Souillac. The SWIO region predominantly comprises relatively poor countries/territories, but imminent Blue/Ocean economy developments are prevalent throughout the region. This study highlights the importance of establishing baselines upon which any future potential impact from anthropogenic developments in the region can be measured.

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Seasonal soundscapes from three ocean basins: what is driving the differences?

Cited by 7 publications

References 0 publications

Celestial patterns in marine soundscapes

Celestial patterns in marine soundscapes

Large Vessel Activity and Low-Frequency Underwater Sound Benchmarks in United States Waters

Spatio-temporal trends in cetacean strandings and response in the south-western Indian Ocean: 2000-2020

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