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Published (Version of record)CC BY-NC-ND V4.0, Open Access
Published (Version of record)CC BY-NC-ND V4.0, Open
Journal article
Bioaccumulation of estuarine pollutants in leaf oysters (Isognomon ephippium) on the mid-north coast, New South Wales, Australia
Marine environmental research, Vol.189, 106065
07/2023
PMID: 37535282
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Abstract
Filter feeding bivalves are useful bioindicators for the detection of biologically available pollutants. We investigated trace metals, metalloids, and pesticides in leaf oyster (Isognomon ephippium) soft tissue and shells and compared them to sediment in five estuaries in northern New South Wales, Australia. Concentrations of Pb, Cr, Mn, Ni, Fe and Al were higher in sediments, whereas Zn, Cd, Ag, Hg, Se and As bioaccumulated in the soft tissue. The amount of Cu, Hg and Ni in the sediment from Tweed and Richmond River estuaries exceeded the Australian national sediment quality guideline values. Only one pesticide, atrazine, was detected in leaf oyster soft tissue. Combinations of six elements in the soft tissue were the best predictors of oyster condition index and shell size, whereas sediment contaminants showed weak relationships. Overall, the bioaccumulation of metals and metalloids increases with leaf oyster size and reduces leaf oyster condition, suggesting these large bivalves are useful bioindicators for pollution in estuarine environments.
Details
- Title
- Bioaccumulation of estuarine pollutants in leaf oysters (Isognomon ephippium) on the mid-north coast, New South Wales, Australia
- Creators
- Chamara Benthotage - Southern Cross University, Southern Cross Analytical Research ServicesVictoria Cole - Southern Cross UniversityKai G. Schulz - Southern Cross UniversityKirsten Benkendorff - Southern Cross University
- Publication Details
- Marine environmental research, Vol.189, 106065
- Comment
- Authors would like to thank Bhashini Kirahandi, Endang Jamal and Emily Turk for the field assistance, Endurance Ewere for assisting with pesticide extractions and Sumith Pathirana for helping with creating the site map.
- Publisher
- Elsevier Ltd
- Grant note
- This project was supported by Southern Cross University Research Training Program Scholarship to CB and funding from the NSW Marine Estate Management Strategy (NSW Department of Primary Industries).
- Identifiers
- 991013124019302368
- Copyright
- © 2023 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
- Academic Unit
- Southern Cross Analytical Research Services; Faculty of Science and Engineering; Centre for Coastal Biogeochemistry; Science
- Language
- English
- Resource Type
- Journal article