Marine Mammals: Hearing and Echolocation at Coconut Island
Abstract
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2010
- Accession Number
- ADA541768
Entities
People
- Paul E. Nachtigall