Marine Mammals: Hearing and Echolocation at Coconut Island

Broaden the baseline of hearing measures of marine mammals by increasing the number of animals and species measured. The effects of sound on wild populations of animals can best be determined if baseline hearing measures are known. Develop an understanding of the basic processes of odontocete echolo...

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Bibliographic Details
Main Author: Nachtigall, Paul E.
Other Authors: HAWAII INST OF MARINE BIOLOGY KAILUA HI MARINE MAMMAL RESEARCH PROGRAM
Format: Text
Language:English
Published: 2010
Subjects:
Biology
Physical and Dynamic Oceanography
Acoustics
*MARINE BIOLOGY
*DOLPHINS(MAMMALS)
*AQUATIC ANIMALS
*ECHO RANGING
*HEARING
WILDLIFE
SONAR
AUTOMATIC GAIN CONTROL
WHALES
ECOSYSTEMS
BASE LINES
POPULATION
TARGETS
CONTROL SYSTEMS
MAMMALS
*ECHOLOCATION
COCONUT ISLAND(HAWAII)
Killer Whale
Online Access:http://www.dtic.mil/docs/citations/ADA541768
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA541768
Description
Summary:Broaden the baseline of hearing measures of marine mammals by increasing the number of animals and species measured. The effects of sound on wild populations of animals can best be determined if baseline hearing measures are known. Develop an understanding of the basic processes of odontocete echolocation for ecosystem management. Echolocation is the principal sense for odontocete foraging and its understanding is therefore crucial for estimating the effects of sound on foraging and populations and ecosystem management. Examine the control of hearing during echolocation. Improve the measurement of marine mammal hearing by developing and refining hearing procedures particularly those that will rapidly measure the hearing of stranded and temporarily caught animals. Comparatively examine the basic hearing mechanisms of marine mammal species. Comparatively examine the hearing during echolocation of species in addition to that of the false killer whale Examine automatic gain control mechanisms in odontocete echolocation. Develop an understanding of the basic processes used by odontocetes to actively discriminate fine differences in echolocation targets and to model those processes for use in the development of improved sonars.

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