Separating the effects of water physicochemistry and sediment contamination on Chironomus tepperi (Skuse) survival, growth and development: A boosted regression tree approach
Robin Hale, Stephen Marshall, Katherine Jeppe, Vincent Pettigrove
Aquatic Toxicology | ELSEVIER SCIENCE BV | Published : 2014
More comprehensive ecological risk assessment procedures are needed as the unprecedented rate of anthropogenic disturbances to aquatic ecosystems continues. Identifying the effects of pollutants on aquatic ecosystems is difficult, requiring the individual and joint effects of a range of natural and anthropogenic factors to be isolated, often via the analysis of large, complicated datasets. Ecotoxicologists have traditionally used multiple regression to analyse such datasets, but there are inherent problems with this approach and a need to consider other potentially more suitable methods. Sediment pollution can cause a range of negative effects on aquatic animals, and these are used as the ba..View full abstract
We gratefully acknowledge the assistance of members of CAPIM at the University of Melbourne who collected sediment, ran bioassays and helped collating data, in particular Bryant Gagliardi, Claudette Kellar, Bec Brown, Sara Long, Daniel MacMahon, Kallie Townsend, Matthew O'Brien, Lisa Golding, and David Sharley. We also acknowledge Anupama Kumar and members of CSIRO Land and Water's Contaminant Chemistry and Ecotoxicology program for running bioassays. Comments from two anonymous reviewers greatly improved the final manuscript. This work was funded by the Victorian Science Agenda by the Department of Business and Innovation and supported by the CAPIM Consortium Partners including EPA Victoria, RMIT, DPI and Melbourne Water. Funding bodies were not involved in the design of the study, or data collection, analysis and interpretation.