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Free Content Analysis of Visual Transects for Fish Assessment on Artificial Reefs

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Visual transects have been used from 1979 through 1986 to assess densities of a “core group” of semi-pelagic and benthic fishes on 12 artificial reefs located throughout Puget Sound, Washington. These 8 years of fish density estimates were used to determine the precision of the estimates by transect length. The use of visual transect fish density estimates to manage artificial reef fisheries is discussed. No significant differences were found between transect length-groups for mean densities of semi-pelagic and benthic fishes. The precision of the density estimates was from ±23% to ±37%. Under-estimation of fish densities by visual transects was determined to not adversely affect management of artificial reef fisheries.

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Document Type: Research Article

Publication date: 1989-03-01

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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