title: Utilization of multiple organisms in a proposed early-warning biomonitoring system for real-time detection of contaminants: preliminary results and modeling.
abstract: During past decades, biomonitors were deployed in lakes and rivers to rapidly detect hazardous chemicals by measuring the endpoints of a single aquatic species at defined short intervals. Most biomonitors, however, are only capable of indicating a departure from baseline water conditions without identifying the cause. In order to provide a more comprehensive assessment, a biomonitoring system which features a library of stereotyped responses of multiple aquatic species in various water conditions is proposed. A preliminary library was constructed by characterizing the behavioural and physiological responses of Daphnia magna, Hyalella azteca, Lumbriculus variegatus, and Pseudokirchneriella subcapitata to various concentrations of atrazine and tributyltin. By employing multivariate statistical tools such as principal component analysis (PCA) and discriminant analysis, this library (which contained responses after 6h of exposure to contaminants) was used as a template to classify and to model other sets of earlier measurements at 2 and 4h, resulting in an accuracy of 73 and 97%, respectively. These findings demonstrated the potential capability of the proposed early-warning biomonitoring system to provide real-time water quality assessment and early-warning contaminant detection.
authors.affiliation: Environmental Applied Science and Management Graduate Program, Ryerson University, Toronto, Ontario, Canada.
authors.forename: Aryo
authors.initials: A
authors.lastname: Maradona
authors.forename: Gillianne
authors.initials: G
authors.lastname: Marshall
authors.forename: Mehrab
authors.initials: M
authors.lastname: Mehrvar
authors.forename: Ronald
authors.initials: R
authors.lastname: Pushchak
authors.forename: Andrew E
authors.initials: AE
authors.lastname: Laursen
authors.forename: Lynda H
authors.initials: LH
authors.lastname: McCarthy
authors.forename: Vadim
authors.initials: V
authors.lastname: Bostan
authors.forename: Kimberley A
authors.initials: KA
authors.lastname: Gilbride
mesh_terms: D000818:Animals; D001280:Atrazine / Q000032:analysis; D004784:Environmental Monitoring / Q000379:methods*; D004785:Environmental Pollutants / Q000032:analysis*; D025341:Principal Component Analysis; D014220:Trialkyltin Compounds / Q000032:analysis
chemical_list: D004785:Environmental Pollutants; D014220:Trialkyltin Compounds; C011559:tributyltin; D001280:Atrazine