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Longitudinal analysis of bioaccumulative contaminants in freshwater fishes

January 1, 2003

The National Contaminant Biomonitoring Program (NCBP) was initiated in 1967 as a component of the National Pesticide Monitoring program. It consists of periodic collection of freshwater fish and other samples and the analysis of the concentrations of persistent environmental contaminants in these samples. For the analysis, the common approach has been to apply the mixed two-way ANOVA model to combined data. A main disadvantage of this method is that it cannot give a detailed temporal trend of the concentrations since the data are grouped. In this paper, we present an alternative approach that performs a longitudinal analysis of the information using random effects models. In the new approach, no grouping is needed and the data are treated as samples from continuous stochastic processes, which seems more appropriate than ANOVA for the problem.

Publication Year 2003
Title Longitudinal analysis of bioaccumulative contaminants in freshwater fishes
DOI 10.1023/A:1026044220657
Authors Jielun Sun, Y. Kim, C. J. Schmitt
Publication Type Article
Publication Subtype Journal Article
Series Title Environmental and Ecological Statistics
Index ID 70025361
Record Source USGS Publications Warehouse
USGS Organization Columbia Environmental Research Center