Visual census methods underestimate density and diversity of cryptic reef fishes |
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| Authors: | T. J. Willis |
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| Affiliation: | Leigh Marine Laboratory and Department of Statistics, University of Auckland, P.O. Box 349, Warkworth, New Zealand |
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| Abstract: | The diversity and density of small, benthic reef fishes were estimated using visual census and enclosed rotenone stations. Visual census underestimated the number of species present and the density of common species by up to 91%. |
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| Keywords: | sample bias New Zealand reef fishes rotenone underwater visual census |
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