Principles of Marine Bioacoustics

Au, Whitlow W. L.; Hastings, Mardi C.

doi:10.1007/978-0-387-78365-9

Cited by 336 publications

(267 citation statements)

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“…Little information exists on the mechanisms by which baleen whales detect prey [28,39,40]. Since the current analysis does not examine behavioral data, no conclusions can be drawn about whether the baleen whales considered actually employ active sensing to detect herring shoal prey.…”

Section: Discussionmentioning

confidence: 99%

“…Detection of large herring shoals and the seafloor is then investigated using theoretical and numerical methods developed for analyzing Ocean Acoustic Waveguide Remote Sensing (OAWRS) of fish shoals [21][22][23][24][25] given these active sensing parameters. Sensing resolution in cross-range is determined by spatial array theory and in range by incoherent energy analysis [1,2,[21][22][23][24][25][26], since evidence suggests temporally coherent auditory processing is unlikely [27,28].…”

Section: Introductionmentioning

confidence: 99%

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Feasibility of Acoustic Remote Sensing of Large Herring Shoals and Seafloor by Baleen Whales

Makris

2016

Remote Sensing

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Recent research has found a high spatial and temporal correlation between certain baleen whale vocalizations and peak herring spawning processes in the Gulf of Maine. These vocalizations are apparently related to feeding activities with suggested functions that include communication, prey manipulation, and echolocation. Here, the feasibility of the echolocation function is investigated. Physical limitations on the ability to detect large herring shoals and the seafloor by acoustic remote sensing are determined with ocean acoustic propagation, scattering, and statistical theories given baleen whale auditory parameters. Detection is found to be highly dependent on ambient noise conditions, herring shoal distributions, baleen whale time-frequency vocalization spectra, and geophysical parameters of the ocean waveguide. Detections of large herring shoals are found to be physically feasible in common Gulf of Maine herring spawning scenarios at up to 10 ± 6 km in range for humpback parameters and 1 ± 1 km for minke parameters but not for blue and fin parameters even at zero horizontal range. Detections of the seafloor are found to be feasible up to 2 ± 1 km for blue and humpback parameters and roughly 1 km for fin and minke parameters, suggesting that the whales share a common acoustic sensation of rudimentary features of the geophysical environment.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Feasibility of Acoustic Remote Sensing of Large Herring Shoals and Seafloor by Baleen Whales

Makris

2016

Remote Sensing

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“…These trips were a part of data collection efforts by Macuáticos Colombia Foundation that included photo-identification and behavioral studies in addition to acoustic data collection. A single SQ26-08 hydrophone with a 0.02 to 50 kHz frequency range and 100 m maximum operating depth was connected to a 24-bit Zoom H1 digital recorder with 96 kHz sampling rate, 40 kHz recording capacity, and automatic gain settings turned off for more accurate reporting of measurements (Au and Hastings 2008). The hydrophone was deployed to the full extent of the 10 m cord whenever singers were detected, either visually or audibly.…”

Section: Methodsmentioning

confidence: 99%

Humpback whale, <i>Megaptera novaeangliae</i>, song during the breeding season in the Gulf of Tribugá, Colombian Pacific

Perazio

Zapetis²,

Roberson³

et al. 2018

MCD

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A key feature of humpback whale behavior, documented primarily on the breeding grounds, is the repertoire of the males' song. Song is made up of single units combined together into phrases, which are repeated to make up themes. A song consists of several themes sung in succession. This study qualitatively investigates the presence and structure of song recorded in the Gulf of Tribugá in the Colombian Pacific. Data were collected between June and September 2013, from which approximately 4 hours and 30 minutes of song were analyzed from five individual whales. Three distinct themes, always sung in the same order (theme 1-theme 2-theme 3) were identified. Theme 1 was the most predominant theme overall, and was present in each song session that was analyzed. The structure of each theme is described with accompanying spectrograms, and specific acoustic parameters further illustrate theme progression and characterize differences between whales. This study serves as the first published descriptive analysis of the song of stock G in this area, and suggestions are made for future directions of investigation. Research on humpback song is used as a part of the overall efforts of Macuáticos Colombia Foundation to educate the communities of the Gulf of Tribugá about the importance of conservation, and to advocate for stricter guidelines for safe whale-watching practices. RÉSUMÉLes baleines à bosse ont été observées dans le monde entier et elles migrent chaque année entre leurs zones de nourrissage dans les latitudes élevées et les aires de reproduction aux latitudes basses. Le chant des baleines à bosse est l'un des comportements lié à l'accouplement qui a été documenté sur les aires de reproduction. Ce chant est composé d'unités simples combinées dans des phrases et qui sont répétées pour composer des thèmes. Les chants sont composés de plusieurs thèmes et sont principalement émis par les mâles. L'étude actuelle a porté sur la présence et la structure du chant des baleines à bosse du G-stock enregistré dans le golfe de Tribugá dans le Pacifique colombien.Les données ont été recueillies entre juin et septembre 2013 à l'aide d'un hydrophone SQ26-08 au cours d'excursions en bateau qui se sont déroulées 3 fois par semaine. La structure du chant a été codée en utilisant Raven Pro 1.4. Environ 4 heures et 30 minutes de chant ont été analysées et les chercheurs ont identifié trois thèmes distincts qui ont toujours été entendus dans le même ordre. Le thème 1 dominait dans tous les enregistrements et était composé de répétitions de légères variations de l'expression 'ABABABAA'. Le thème 2 était composé de répétitions des unités 'F' et 'Bl', avec des variations de la phrase de multiples unités ré-pétées dans une rangée. Le thème 3 était composé de phrases ré-pétées d'une unité longue 'upsweep' tonale 'LU', suivie par une unité courte 'upsweep' tonale 'SU', parfois avec une unité 'downsweep' dans le motif. L'unité 'S' a été entendue pendant les transitions du thème 3 au thème 1. Le thème 1 a été entendu beaucoup plus fréquemme...

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“…čia f c -atkirtimo dažnis (Au, Hastings 2008). Vandens gyliams skaičiuoti buvo panaudotas dugno batimetrijos žemėlapis (kurio tinklelis ~4,5×4,5 km), sukurtas Seifert ir kt.…”

Section: Garso Sklidimo Skaičiavimasunclassified

Underwater Noise Modeling in Lithuanian Area of the Baltic Sea

Bagočius

Narščius

2017

Science - Future of Lithuania

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2017 © Straipsnio autoriai. Leidėjas VGTU leidykla "Technika". Šis straipsnis yra atvirosios prieigos straipsnis, turintis Kūrybinių bendrijų (Creative Commons) licenciją (CC BY-NC 4.0), kuri leidžia neribotą straipsnio ar jo dalių panaudą su privaloma sąlyga nurodyti autorių ir pirminį šaltinį. Straipsnis ar jo dalys negali būti naudojami komerciniams tikslams. MOKSLAS -LIETUVOS ATEITIS SCIENCE -FUTURE OF LITHUANIA

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Principles of Marine Bioacoustics

Cited by 336 publications

References 0 publications

Feasibility of Acoustic Remote Sensing of Large Herring Shoals and Seafloor by Baleen Whales

Feasibility of Acoustic Remote Sensing of Large Herring Shoals and Seafloor by Baleen Whales

Humpback whale, <i>Megaptera novaeangliae</i>, song during the breeding season in the Gulf of Tribugá, Colombian Pacific

Underwater Noise Modeling in Lithuanian Area of the Baltic Sea

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