Calculation of species sensitivity values and their precision in marine benthic faunal quality indices

Marine Pollution Bulletin
Kjell LeonardssonRutger Rosenberg

Abstract

A challenging aspect of benthic quality indices used for assessing the marine environment has been to compile reliable measures of the species' sensitivity to disturbances. Sensitivity values and their uncertainties can be calculated, but a problem to cope with is that the results may depend on the actual proportion of samples from disturbed and undisturbed environments. Here we calculated sensitivity values for each species along an artificial disturbance gradient created by bootstrapping varying numbers of samples from disturbed and undisturbed environments. The values were increasing, decreasing, or more or less constant along this gradient. The lowest value with the lowest uncertainty was adopted as the species sensitivity value. Analyses of the uncertainties indicated that the accuracy rather than the precision might be a concern. We suggest a method to exclude species for which the uncertainty is outside predefined limits as a precaution to reduce bias in the environmental status classification.

References

Oct 12, 2004·Journal of Environmental Management·Robert J DiazRaymond M Valente
Mar 24, 1978·Science·J H Connell

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Citations

Feb 10, 2016·Marine Pollution Bulletin·Kjell LeonardssonRutger Rosenberg
Jan 22, 2017·Marine Pollution Bulletin·Romualda Chuševė, Darius Daunys
Jul 8, 2021·Environmental Science and Pollution Research International·Nawfel MosbahiJean-Claude Dauvin

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