(PBiT) assessments using the Quantitative Structure-Activity Relationships (QSARs) to categorize regulated substances. Bioaccumulation in fish using the Bioconcentration Factor (BCF) methods. Classification of ecotoxicity Total amount of acute toxicity is directly related to the classification of toxicity. < 1 part per million → Class I 1–10 parts per million → Class II 10–100 parts per million → Class III See also Aquatic toxicology Ecology Ecotoxicity Environmental toxicology Toxicity Toxicology References Bibliography Agency, United States Environmental Protection. "Office of Chemical Safety and Pollution Prevention." 5 October 2011. U.S Environmental Protection Agency. 9 December 2011. Bazerman, Charles and René Agustin De los Santos. "Measuring Incommensurability: Are toxicology and ecotoxicology blind to what the other sees?" 9 January 2006. Clements, William and Jason Rohr. (2009) "Community Responses to Contaminants: Using Basic Ecological Principles to Predict Ecotoxicological Events." Environmental Toxicology and Chemistry 28: p1789-1800. The Humane Society of the United States. (2011). Ecotoxicity. Retrieved December 12, 2011, from Procter & Gamble website: http://alttox.org/ttrc/toxicity-tests/ecotoxicity/ Newman, M. C., & Clements, W. H. (2008). Ecotoxicology: a Comprehensive Treatment. Retrieved from https://books.google.at/books?id=y11sdkzQLKkC&printsec=frontcover&dq=ecotoxicology+comprehensive+treatment&hl=en&sa=X&redir_esc=y#v=onepage&q=ecotoxicology%20comprehensive%20treatment&f=false Newman, M. C., & Jagoe, C. H. (1996). Ecotoxicology: a Hierarchical Treatment. Retrieved from https://books.google.at/books?id=I1i9SvR4wcMC&printsec=frontcover&dq=ecotoxicology+hierarchical+treatment&hl=en&sa=X&redir_esc=y#v=onepage&q=ecotoxicology%20hierarchical%20treatment&f=false Oregon State University. (2011, March). Ecotoxicology topic fact sheet. Retrieved December 6, 2011, from National Pesticide Information Center website: http://npic.orst.edu/factsheets/ecotox.pdf Further reading Catherine A. Harris, Alexander P. Scott, Andrew C. Johnson, Grace H. Panter, Dave Sheahan, Mike Roberts, John P. Sumpter (2014): Principles of Sound Ecotoxicology. Environ. Sci. Technol., Article ASAP, External links European Centre for Ecotoxicology and Toxicology of Chemicals ecotoxmodels website on ecotoxicology & models Online biomonitoring of water quality by a 24/7 record of various bivalve molluscs' behavior and physiology worldwide (biological rhythms, growth rate, spawning, daily behavior): the MolluSCAN eye project SPEAR Indicatorsystem informs on pesticide contamination in streams. Ecological experiments