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Sonar Mapping of Giant Kelp Density and Distribution

by Karel Zabloudil, ECO-systems Mgmt. Assoc., Inc, Carlsbad, United States,
John Reitzel, ECO-systems Mgmt. Assoc., Inc, Carlsbad, United States,
Stephen Schroeter, ECO-systems Mgmt. Assoc., Inc, Carlsbad, United States,
John Dixon, ECO-systems Mgmt. Assoc., Inc, Carlsbad, United States,
Thomas Dean, ECO-systems Mgmt. Assoc., Inc, Carlsbad, United States,
Timothy Norall, ECO-systems Mgmt. Assoc., Inc, Carlsbad, United States,



Document Type: Proceeding Paper

Part of: Coastal Zone '91

Abstract:

The methods of estimating the density and distribution of giant kelp, Macrocystic pyrifera, and substrate type, using side-scanning and down-looking sonar are described. These techniques provide quantitative assessments of changes in kelp population density, distribution, and substrate exposure. This paper presents the results of these developments and includes a description of the sonar methodology and a summary of the data gathered to evaluate the sonar technique and its effectiveness.

Subject Headings: Mapping | Substrates | Population projection | Vegetation | Probe instruments | Oceanography | Hydrographs

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