The use of acoustic ground discrimination as a precursor to the estimation of shellfish abundance

Author

Naidu, K.S. ; Seward, E.M.

Author_Institution

Fisheries & Oceans Sci. Branch, North Atlantic Fisheries Center, St. John´´s, Nfld., Canada

Volume

5

fYear

2003

fDate

22-26 Sept. 2003

Abstract

Data on seabed types for any area can be assembled not only during dedicated research missions, but may be supplemented by information collected opportunistically during resource surveys in the area for other species and when the vessel is in transit. The data can be pooled from other vessels to produce a composite of the distribution of seabed types. Examples of how we have assembled such data for the Iceland scallop in the Strait of Belle Isle (NAFO Div. 4R) and for the Arctic surf clam over the vast apron of shelf commonly called the Grand Banks of Newfoundland (NAFO Div. 3LNO) are provided and discussed.

Keywords

acoustic signal processing; oceanographic techniques; oceanography; underwater sound; Arctic surf clam; Chlamys islandica; Grand Banks of Newfoundland; Iceland scallop; Mactromeris polynyma; acoustic ground discrimination; biomass; contextual bathymetry; double reflection; epi-benthic populations; infaunal populations; resource estimation; sampling error; sea surface; seabed types; shellfish abundance; spatial homogeneity; stratification estimation; Aquaculture; Arctic; Assembly; Biomass; Oceans; Reconnaissance; Reflection; Robustness; Sampling methods; Sea measurements;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEANS 2003. Proceedings

Conference_Location

San Diego, CA, USA

Print_ISBN

0-933957-30-0

Type

conf

DOI

10.1109/OCEANS.2003.178339

Filename

1283024