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Analysis of the Vocalizations of Orcinus Orca in Response to Anthropogenic Noise

Analysis of the Vocalizations of Orcinus Orca in Response to Anthropogenic Noise
Author: Carolyn Elizabeth Talus
Publisher:
Total Pages: 264
Release: 2000
Genre: Killer whale
ISBN:

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"Underwater noise created by vessel traffic in the world's oceans may be detrimental to marine life that relies on acoustic senses for survival. An analytical study was completed which examined changes in vocal behavior of subpod A36, killer whales (Orcinus orca) that reside off Vancouver Island. The average call rate of each call type was calculated from the recordings, and call rates were found to significantly decrease in the presence of vessel noise. Structural characteristics of specific call types such as differences in frequency, duration, and harmonics were also examined and statistically compared with and without boat noise. Differences found include a decreased number of harmonics in the N5 call, and a more peaked distribution of the average frequency of the first harmonic of the N4 call when associated with vessel noise. The significance of the result relative to the possible disturbance of these killer whales is uncertain"--Leaf iii.


Effects of Noise on Marine Mammals

Effects of Noise on Marine Mammals
Author: William John Richardson
Publisher:
Total Pages: 488
Release: 1991
Genre: Airplanes
ISBN:

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Effects of Anthropogenic Noise on Animals

Effects of Anthropogenic Noise on Animals
Author: Hans Slabbekoorn
Publisher: Springer
Total Pages: 322
Release: 2018-08-20
Genre: Medical
ISBN: 1493985744

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Over the past several years, many investigators interested in the effects of man-made sounds on animals have come to realize that there is much to gain from studying the broader literature on hearing sound and the effects of sound as well as data from the effects on humans. It has also become clear that knowledge of the effects of sound on one group of animals (e.g., birds or frogs) can guide studies on other groups (e.g., marine mammals or fishes) and that a review of all such studies together would be very useful to get a better understanding of the general principles and underlying cochlear and cognitive mechanisms that explain damage, disturbance, and deterrence across taxa. The purpose of this volume, then, is to provide a comprehensive review of the effects of man-made sounds on animals, with the goal of fulfilling two major needs. First, it was thought to be important to bring together data on sound and bioacoustics that have implications across all taxa (including humans) so that such information is generally available to the community of scholars interested in the effects of sound. This is done in Chaps. 2-5. Second, in Chaps. 6-10, the volume brings together what is known about the effects of sound on diverse vertebrate taxa so that investigators with interests in specific groups can learn from the data and experimental approaches from other species. Put another way, having an overview of the similarities and discrepancies among various animal groups and insight into the “how and why” will benefit the overall conceptual understanding, applications in society, and all future research.


Ocean Noise and Marine Mammals

Ocean Noise and Marine Mammals
Author: National Research Council
Publisher: National Academies Press
Total Pages: 220
Release: 2003-05-22
Genre: Science
ISBN: 0309133157

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For the 119 species of marine mammals, as well as for some other aquatic animals, sound is the primary means of learning about the environment and of communicating, navigating, and foraging. The possibility that human-generated noise could harm marine mammals or significantly interfere with their normal activities is an issue of increasing concern. Noise and its potential impacts have been regulated since the passage of the Marine Mammal Protection Act of 1972. Public awareness of the issue escalated in 1990s when researchers began using high-intensity sound to measure ocean climate changes. More recently, the stranding of beaked whales in proximity to Navy sonar use has again put the issue in the spotlight. Ocean Noise and Marine Mammals reviews sources of noise in the ocean environment, what is known of the responses of marine mammals to acoustic disturbance, and what models exist for describing ocean noise and marine mammal responses. Recommendations are made for future data gathering efforts, studies of marine mammal behavior and physiology, and modeling efforts necessary to determine what the long- and short-term impacts of ocean noise on marine mammals.


A Study on the Relationships Between Anthropogenic Sounds, Whale Sounds and Behavior and Physiology of Free-Swimming Whales

A Study on the Relationships Between Anthropogenic Sounds, Whale Sounds and Behavior and Physiology of Free-Swimming Whales
Author:
Publisher:
Total Pages: 13
Release: 1995
Genre:
ISBN:

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To study the relationships of anthropogenic sounds to specific aspects of whale behavior and physiology. Further, how low frequency sounds might negatively affect these parameters and habitat- use patterns. Refine and apply multi-sensor radio/satellite telemetry/data logging tags (MST-VHF and MST-SAT tags developed under a previous ONR grant) to free-swimming whales and use them as the key tools to test for and evaluate specific affects of anthropogenic sound sources. The MST-VHF and MST-SAT tags record one or several of the following parameters which are then downloaded directly by serial cable or via telemetry: heart rate, speed, roll, yaw, depth, sound, temperature, and others. Extent and rate of change in one or more of these parameters of a tagged whale were to be compared under "control"--No anthropogenic sounds, and "test" conditions--anthropogenic noise present e.g. from ships, research sources, fisheries, and others. Repeatable-measured patterns of change in response to characterized sounds simultaneously recorded using gear aboard independent platforms nearby would provide evidence that whales are affected by certain anthropogenic sounds. Negative affects would be interpreted as directly observed departures from associated sound stimuli and/or statistically significant shifts in the activity budget of animals compared with the normal or control condition.


Marine Mammals and Noise

Marine Mammals and Noise
Author: W. John Richardson
Publisher: Academic Press
Total Pages: 593
Release: 2013-10-22
Genre: Science
ISBN: 0080573037

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Many marine mammals communicate by emitting sounds that pass through water. Such sounds can be received across great distances and can influence the behavior of these undersea creatures. In the past few decades, the oceans have become increasingly noisy, as underwater sounds from propellers, sonars, and other human activities make it difficult for marine mammals to communicate. This book discusses, among many other topics, just how well marine mammals hear, how noisy the oceans have become, and what effects these new sounds have on marine mammals. The baseline of ambient noise, the sounds produced by machines and mammals, the sensitivity of marine mammal hearing, and the reactions of marine mammals are also examined. An essential addition to any marine biologist's library, Marine Mammals and Noise will be especially appealing to marine mammalogists, researchers, policy makers and regulators, and marine biologists and oceanographers using sound in their research.


Distinctions in Sound Patterns of Calls by Killer Whales (Orcinus Orca) from Analysis of Computed Sound Features

Distinctions in Sound Patterns of Calls by Killer Whales (Orcinus Orca) from Analysis of Computed Sound Features
Author: William A. Watkins
Publisher:
Total Pages: 41
Release: 1998
Genre:
ISBN:

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Calls of killer whales, Orcinus Orca, were analyzed using computed sound features to classify sound patterns and identify call similarities. Calls were classified and separated according to the pod/family group within clans identified previously by John Ford (U. BC) in the Vancouver whale populations. Acoustic characteristics of the same call type from different individuals were extremely similar, so that discriminating these different sounds was the goal. The WHOl AcouStat program and associated database systems were used to define numerical statistics for each call, and then, these were compared to sort and classify the sounds.