Performance of a contour-based classification method for whistles of Mediterranean delphinids

Gannier, Alexandre; Fuchs, Sandra Cristina Pereira Costa; Quèbre, Paméla; Oswald, Julie N.

doi:10.1016/j.apacoust.2010.05.019

Cited by 42 publications

(47 citation statements)

References 11 publications

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“…Delphinoidea, especially closely related species, are challenging to distinguish from one another acoustically, and few studies have directly explored interspecific variation (Steiner, 1981;Miller et al, 1995;Rendell et al, 1999;Baron et al, 2008;Gannier et al, 2010). Such is the case for the phonetically similar long-finned pilot whales, narwhals, and beluga whales that inhabit Arctic waters.…”

Section: Marine Mammal Acoustic Detectionmentioning

confidence: 99%

Seasonal Trends in Acoustic Detection of Marine Mammals in Baffin Bay and Melville Bay, Northwest Greenland + Supplementary Appendix 1 (See Article Tools)

Frouin‐Mouy¹,

Kowarski²,

Martin³

et al. 2017

ARCTIC

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ABSTRACT. The expansion of hydrocarbon exploration in northwest Greenland has made it increasingly important to understand the occurrence of marine mammals in the region. We describe the seasonal occurrence of marine mammals and the spatial distribution of their calls in Baffin Bay and Melville Bay. Four Autonomous Multichannel Acoustic Recorders (AMARs) were deployed during summer 2012 (late July to early October), five recorders during September 2013, and two recorders from late September 2013 to early September 2014. The call presence of several species was analyzed using automatic call detection and manual verification analysis methods. A novel approach to discern narwhal (Monodon monoceros) clicks from beluga (Delphinapterus leucas) clicks was implemented during the verification process. Narwhal calls were detected in spring and fall, showing a south-to-north migration pattern in spring and a north-to-south migration pattern in fall. Few beluga whales were detected during fall 2013 and spring 2014. Bearded seal (Erignathus barbatus) calls were detected mainly during spring (mating period). A small number of bowhead whale calls (Balaena mysticetus) were detected during fall 2013 and spring and summer 2014. For the first time at this latitude in Baffin Bay, long-finned pilot whales (Globicephala melas) and sperm whales (Physeter macrocephalus) were detected during summer and fall. Our results suggest that the presence of marine mammals in Baffin Bay and Melville Bay is governed mainly by the annual cycle of sea ice formation and decay.

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Section: Marine Mammal Acoustic Detectionmentioning

confidence: 99%

Seasonal Trends in Acoustic Detection of Marine Mammals in Baffin Bay and Melville Bay, Northwest Greenland + Supplementary Appendix 1 (See Article Tools)

Frouin‐Mouy¹,

Kowarski²,

Martin³

et al. 2017

ARCTIC

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“…Whistles recorded off Newcastle had fundamental frequencies from 4 to greater than 22 kHz (the recording bandwidth was limited to 22 kHz) and lasted 1-13 s [179]. While the frequency range matched that of whistles recorded off California, Egypt, Gran Canaria, the Azores, Scotland and in the Mediterranean [156,180,181], the duration of whistles from Australia was longer. Burst-pulse sounds off NSW covered a frequency band from 1 to above 22 kHz and lasted 2-13 s [179].…”

Section: Grampus Griseus-risso's Dolphin Grampusmentioning

confidence: 99%

“…In the Mediterranean, eastern USA and Canada, and the northwest Atlantic, this species whistles between 1 and 11 kHz (fundamental) lasting 0.1-3 s per whistle [156,157,[172][173][174]. CW tones have been reported at 1-8 kHz, 0.7-3-s duration off Newfoundland [173].…”

Section: Globicephala Melas-long-finned Pilot Whalementioning

confidence: 99%

“…There have been no publications of this species' sounds in Australia previously. Instead, this species' vocalisations have been described from New Zealand [149,150], the Eastern Tropical Pacific [151,152], the UK [153][154][155], the Mediterranean [156][157][158] and the Atlantic Ocean [158]. Whistles have fundamentals from 3 to 24 kHz and last 0.01-4 s [149][150][151][152][153][154][155][156][157][158][159].…”

Section: Megaptera Novaeangliae-humpback Whalementioning

confidence: 99%

“…Common bottlenose dolphins inhabit tropical to temperate waters globally and occur around Australia in coastal as well as offshore waters [147,272]. Bottlenose dolphins have been acousti- [501] cally recorded in QLD, Australia [284], New Zealand [285], the Eastern Tropical Pacific [151,152], Hawaii [230], California [276,286], the Gulf of Mexico [163,253,276,287], the Caribbean [288], Central America [286,289], Brazil [270,290], Uruguay [291], Argentina [276], Namibia [292], the Northwest Atlantic [163,174], the Northeast Atlantic [282,293,294], Scotland and the UK [282,295,296], Mediterranean [156,293,[297][298][299], and Portugal [300]. Many recordings have also been taken of bottlenose dolphins in captivity (e.g.…”

Section: Tursiops Truncatus-bottlenose Dolphinmentioning

confidence: 99%

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Review of Underwater and In-Air Sounds Emitted by Australian and Antarctic Marine Mammals

et al. 2017

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The study of marine soundscapes is a growing field of research. Recording hardware is becoming more accessible; there are a number of off-the-shelf autonomous recorders that can be deployed for months at a time; software analysis tools exist as shareware; raw or preprocessed recordings are freely and publicly available. However, what is missing are catalogues of commonly recorded sounds. Sounds related to geophysical events (e.g. earthquakes) and weather (e.g. wind and precipitation), to human activities (e.g. ships) and to marine animals (e.g. crustaceans, fish and marine mammals) commonly occur. Marine mammals are distributed throughout Australia's oceans and significantly contribute to the underwater soundscape. However, due to a lack of concurrent visual and passive acoustic observations, it is often not known which species produces which sounds. To aid in the analysis of Australian and Antarctic marine soundscape recordings, a literature review of the sounds made by marine mammals was undertaken. Frequency, duration and source level measurements are summarised and tabulated. In addition to the literature review, new marine mammal data are presented and include recordings from Australia of Omura's whales (Balaenoptera omurai), dwarf sperm whales (Kogia sima), common dolphins (Delphinus delphis), short-finned pilot whales (Globicephala macrorhynchus), long-finned pilot whales (G. melas), Fraser's dolphins (Lagenodelphis hosei), false killer whales (Pseudorca crassidens), striped dolphins (Stenella coeruleoalba) and spinner dolphins (S. longirostris), as well as the whistles and burst-pulse sounds of Australian pygmy killer whales (Feresa attenuata). To date, this is the most comprehensive acoustic summary for marine mammal species in Australian waters.

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Whistle variability of the Mediterranean short beak common dolphin

Azzolin

Gannier²,

Papale

et al. 2019

Aquatic Conservation

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1. The short-beaked common dolphin is a highly vocal species, with a wide distribution in all oceans, including the Mediterranean and the Black Seas. In the Mediterranean Sea, the short-beaked common dolphin inhabits both pelagic and neritic waters.2. Osteological collections and the literature show that short-beaked common dolphins were widespread and abundant in much of the Mediterranean Sea until the late 1960s. During recent decades the species has declined in the whole basin, and, in 2003, it was listed as Endangered in the IUCN Red List.3. Genetic studies strongly suggest that the Mediterranean and the Eastern North Atlantic populations are isolated from each other. Genetic differentiation within the Mediterranean Sea, between the Eastern Mediterranean (Ionian Sea) and Western Mediterranean populations, is also reported.4. The aim of this study was to investigate the geographical variation in the characteristics of whistles of free-ranging short-beaked common dolphins living in the Mediterranean Sea, and to evaluate if whistle acoustic structure is the result of adaptation to local environment characteristics or of a possible genetic diversification.5. Recordings were collected from 1994 to 2012 throughout the basin, employing multiple platforms. Twenty-six independent acoustic detections were made, and 704 whistles were extracted and considered for statistical analysis.6. Whistle analysis enabled the identification of distinct geographical units of short-beaked common dolphin within the Mediterranean Sea. Genetic isolation is probably the major cause of the geographic variance of the Mediterranean short-beaked common dolphin whistle structure, which may reflect some evolutionary adaptations to particular ecological conditions or may be the by-product of morphological evolution.7. The results of the present study show that intra-Mediterranean variability of whistle structure reflects the path of genetic studies, highlighting the possible use of acoustic data in combination with other sources of data (genetic, morphological, etc.) to identify geographic areas where discrete management units occur.

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Performance of a contour-based classification method for whistles of Mediterranean delphinids

Cited by 42 publications

References 11 publications

Seasonal Trends in Acoustic Detection of Marine Mammals in Baffin Bay and Melville Bay, Northwest Greenland + Supplementary Appendix 1 (See Article Tools)

Seasonal Trends in Acoustic Detection of Marine Mammals in Baffin Bay and Melville Bay, Northwest Greenland + Supplementary Appendix 1 (See Article Tools)

Review of Underwater and In-Air Sounds Emitted by Australian and Antarctic Marine Mammals

Whistle variability of the Mediterranean short beak common dolphin

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