Heavy metal concentrations in two snail and two fish species were used to compare the pollution of four sites on the River Zala and on the Kis-Balaton Reservoir (Hungary). The effectiveness of different statistical methods (t- and Bartlett's test, analysis of variance and analysis of covariance) were compared. The most reliable results were obtained by using analysis of covariance, with body weight as the covariate, taking the seasonality in metal concentrations into consideration. The different species showed the same relations among sampling stations if analysis of covariance was applied. It is essential to use statistical methods that account for the most important effects (covariates); otherwise, the reliability of the information supported by biomonitors is compromised.
|Number of pages||8|
|Journal||Archives of Environmental Contamination and Toxicology|
|Publication status||Published - Nov 1 1992|
ASJC Scopus subject areas
- Health, Toxicology and Mutagenesis