Contaminants in marine organisms: Pooling strategies for monitoring mean concentrations.
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Nicholson, M. D.
Fryer, R. J.
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Samples of marine organisms collected for contaminant monitoring are often pooled before being chemically analysed. The main reasons for pooling samples are: 1) to obtain a sufficient quantity of tissue to make the chemical analysis possible; 2) to reduce the overall cost of chemical analyses; 3) to improve the precision of the estimated mean contaminant concentration in a population by increasing the sample size without increasing the number of chemical analyses. However, there are several questions associated with pooling, including: • what is an appropriate pooling strategy? • how should data from pools be statistically analysed? • how should results derived from pooled data be interpreted? This document is an introduction to the statistical aspects of pooling. Unfortunately, it is not possible to consider all the situations in which pooling might arise, .....
PublisherInternational Council for the Exploration of the Sea (ICES)
Series;NrICES Techniques in Marine Environmental Sciences; 18
Sustainable Development Goals (SDG)14.1
Best Practice TypeStandard Operating Procedure
CitationNicholson, M. D., and Fryer, R.J. (1996) Contaminants in marine organisms: Pooling strategies for monitoring mean concentrations. ICES Techniques in Marine Environmental Sciences, No.18, 30pp. DOI: http://dx.doi.org/10.25607/OBP-254