title: Otolith microchemistry: Insights into bioavailable pollutants in a man-made, urban inlet.
abstract: Black bream (Acanthopagrus butcheri) were collected from an artificial inlet, Claisebrook Cove, Western Australia. Claisebrook Cove is adjacent to an historic contaminated site that was remediated during the 1990s. It was later identified as a priority area due to elevated levels of sediment contaminants including Zn, Cu, and Pb. Black bream were collected from this cove in 2005 and 2012 and their otoliths were analysed by laser ablation inductively coupled plasma mass spectrometry of the most recent growth zone. Levels of Zn and Mn, which are metabolically regulated, did not correlate with sediment contamination. However, reduction in sediment Cu levels over time coincided with reduced Cu otolith levels from 2005 to 2012. Results indicate that the elemental composition of the marginal edge of Black bream otoliths can identify bioavailable contaminants in an urban estuary and, with monitoring, can be utilized to establish long-term trends.
authors.affiliation: Department of Environment and Agriculture, Curtin University, P.O. Box U1987, Perth, Western Australia 6845, Australia.
authors.forename: Christina
authors.initials: C
authors.lastname: Andronis
authors.affiliation: John de Laeter Centre, Department of Applied Geology, TIGeR, Curtin University, P.O. Box U1987, Perth, Western Australia 6845, Australia.
authors.forename: Noreen J
authors.initials: NJ
authors.lastname: Evans
authors.affiliation: John de Laeter Centre, Department of Applied Geology, TIGeR, Curtin University, P.O. Box U1987, Perth, Western Australia 6845, Australia.
authors.forename: Bradley J
authors.initials: BJ
authors.lastname: McDonald
authors.affiliation: Water Science Branch, Department of Water, Government of Western Australia, PO Box K822, Perth, Western Australia, Australia.
authors.forename: Helen E
authors.initials: HE
authors.lastname: Nice
authors.affiliation: Department of Environment and Agriculture, Curtin University, P.O. Box U1987, Perth, Western Australia 6845, Australia. Electronic address: m.gagnon@curtin.edu.au.
authors.forename: Marthe Monique
authors.initials: MM
authors.lastname: Gagnon
mesh_terms: D000818:Animals; D061006:Bays; D063366:Estuaries; D019015:Geologic Sediments; D019216:Metals, Heavy / Q000032:analysis*; D008832:Microchemistry; D010037:Otolithic Membrane / Q000737:chemistry*; D010473:Perciformes; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014904:Western Australia
chemical_list: D019216:Metals, Heavy; D014874:Water Pollutants, Chemical
keywords: Black bream; Claisebrook inlet; Otolith microchemistry; Trace elements; Urban estuary