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Quantitative Reef Assessment Studies in Bermuda: A Comparison of Methods and Preliminary Results

Authors: Dodge, Richard E.; Logan, Alan; Antonius, Arnfried

Source: Bulletin of Marine Science, Volume 32, Number 3, July 1982 , pp. 745-760(16)

Publisher: University of Miami - Rosenstiel School of Marine and Atmospheric Science

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Abstract:

To compare in quantitative terms both ecological characteristics of the stony coral fauna at various reef sites in Bermuda and available assessment methodologies, we present a study of four separate methods at each of three reef sites. Three plotless (Intersected-length, Quarter point, Point) and one quadrat (Belt-quadrat) methods were employed. Each technique gave similar results but had inherent advantages and disadvantages which involve trade-offs in quantity and type of information generated and time required for use.

Pooling of method results revealed that total coral coverage was highest at North Rock (26%), intermediate at Three Hill Shoals (17%), and lowest at South shore (13%). Diversity statistics were highest at Three Hill Shoals, intermediate at North Rock, and lowest at South shore. At all three sites the most dominant species in terms of coverage was Diplaria strigosa; six coral species accounted for 90% of the total coral coverage.

This study represents a quantitative comparison of the results and performance of common reef assessment methodologies and the first truly quantitative data on coral coverage, diversity, and distribution for selected reef sites in Bermuda.

Document Type: Research Article

Publication date: July 1, 1982

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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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