Marine Mammals and NoiseGulf Professional Publishing, 1995 - 576 pagine 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. |
Sommario
Introduction | 1 |
Acoustic Concepts and Terminology | 13 |
Measurement Procedures | 33 |
Sound Propagation | 59 |
This | 60 |
Ambient Noise | 87 |
ManMade Noise | 101 |
Marine Mammal Sounds | 159 |
Documented Disturbance Reactions | 241 |
4 | 272 |
Zones of Noise Influence | 325 |
Significance of Responses | 387 |
Conclusions and Data Needs | 425 |
Literature Cited | 453 |
Common and Scientific Names of Marine Mammals | 533 |
547 | |
Altre edizioni - Visualizza tutto
Marine Mammals and Noise W. John Richardson,Charles R. Greene, Jr.,Charles I. Malme,Denis H. Thomson Anteprima limitata - 2013 |
Parole e frasi comuni
abilities acoustic aircraft airgun ambient noise animals approach areas audibility avoidance baleen whales band behavior belugas boats bottlenose bowhead calls cause changes Chapter clicks components continuous depending depth detectable determined directional distance disturbance dolphin drilling echolocation effects energy estimated et al explosions Fish frequencies given gray whales Greene harbor harbor seal hearing higher human activities humpback icebreaking important increasing Island known less limited loss low-frequency man-made noise marine mammals measured needed noise levels observations occur ocean operating pinnipeds pressure produce propagation pulses range reactions received level recorded reduced relative reported response seals seismic sensitivity shallow ship signal similar sometimes sonars sound source levels species spectrum speed strong studies surface tests threshold tion tones toothed transmission types underwater underwater sounds usually vary vessels Watkins wave µPa
Riferimenti a questo libro
Marine Mammals Ashore: A Field Guide for Strandings Joseph R. Geraci,Valerie J. Lounsbury Anteprima limitata - 2005 |
Fisheries Acoustics: Theory and Practice John Simmonds,David N. MacLennan Anteprima non disponibile - 2006 |