Acoustic signatures of the seafloor: Tools for predicting grouper habitat

Gleason, Arthur C. R. and Eklund, Anne-Marie and Reid, R. Pamela and Koch, Veronique (2006) Acoustic signatures of the seafloor: Tools for predicting grouper habitat. In: Emerging technologies for reef fisheries research and management. Seattle, WA, NOAA, pp. 38-47. (NOAA Professional Paper NMFS,5)

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Abstract

Groupers are important components of commercial and recreational fisheries. Current methods of diver-based grouper census surveys could potentially benefit from development of remotely sensed methods of seabed classification. The goal of the present study was to determine if areas of high grouper abundance have characteristic acoustic signatures. A commercial acoustic seabed mapping system, QTC View Series V, was used to survey an area near Carysfort Reef, Florida Keys. Acoustic data were clustered using QTC IMPACT software, resulting in three main acoustic classes covering 94% of the area surveyed. Diver-based data indicate that one of the acoustic classes corresponded to hard substrate and the other two represented sediment. A new measurement of seabed heterogeneity, designated acoustic variability, was also computed from the acoustic survey data in order to more fully characterize the acoustic response (i.e., the signature) of the seafloor. When compared with diver-based grouper census data, both acoustic classification and acoustic variability were significantly different at sites with and without groupers. Sites with groupers were characterized by hard bottom substrate and high acoustic variability. Thus, the acoustic signature of a site, as measured by acoustic classification or acoustic variability, is a potentially useful tool for stratifying diver sampling effort for grouper census.

Item Type: Book Section
Title: Acoustic signatures of the seafloor: Tools for predicting grouper habitat
Personal Creator/Author:
CreatorsEmail
Gleason, Arthur C. R.
Eklund, Anne-Marie
Reid, R. Pamela
Koch, Veronique
Title of Book: Emerging technologies for reef fisheries research and management.
Refereed: Yes
Series Name: NOAA Professional Paper NMFS
Number: 5
Number of Pages: 124
Page Range: pp. 38-47
Date: 2006
Publisher: NOAA
Place of Publication: Seattle, WA
Issuing Agency: United States National Marine Fisheries Service
Subjects: Ecology
Management
Fisheries
Item ID: 2488
Depositing User: Patti M. Marraro
Date Deposited: 23 Jul 2009 22:51
Last Modified: 29 Sep 2011 18:56
URI: http://aquaticcommons.org/id/eprint/2488

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