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Heavy metal pollution in the Derwent estuary: history, science and management

Citation

MacLeod, C and Coughanowr, C, Heavy metal pollution in the Derwent estuary: history, science and management, Regional Studies in Marine Science, 32 Article 100866. ISSN 2352-4855 (2019) [Refereed Article]


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DOI: doi:10.1016/j.rsma.2019.100866

Abstract

In this review we provide an overview of the Derwent estuary, Tasmania, Australia. The Derwent flows through the centre of Hobart, a city with a population of approximately 200,000 people. It provides a mechanism for trade and transport, and plays a key role in community recreation. There is significant metal contamination throughout the estuary as a result of historic industry practices, to the extent that the Derwent has an unenvied reputation as one of the most highly metal polluted estuaries in the world. The most recent sediment survey (2012) showed zinc, copper, lead, cadmium, arsenic and mercury levels as still particularly high; with levels in the mid-estuary exceeding 14000, 550, 1800, 120, 420 and 45 ug/g respectively. Zinc is the most abundant metal contaminant in the Derwent, with water column levels in the mid-estuary ranging between 3060 ug/L. Considerable management and research efforts over the last 50 years have been focused on addressing these legacy issues. As a result, the Derwent Estuary Program was instigated and has proven to be a highly successful body for co-ordination of both remediation and research efforts in the estuary. Whilst the legacy issues have been a key focus for management to date, like other waterbodies worldwide, the estuary is also facing contemporary issues associated with increased urbanisation, changes in catchment usage and climate change. This review provides a comprehensive summary of management initiatives and research to date, and outlines those emerging issues.

Item Details

Item Type:Refereed Article
Keywords:science, history, management, metal contamination, monitoring, environmental impact assessment, multiple use management, community engagement
Research Division:Environmental Sciences
Research Group:Environmental management
Research Field:Natural resource management
Objective Division:Environmental Management
Objective Group:Coastal and estuarine systems and management
Objective Field:Assessment and management of coastal and estuarine ecosystems
UTAS Author:MacLeod, C (Professor Catriona MacLeod)
ID Code:150318
Year Published:2019
Web of Science® Times Cited:5
Deposited By:Directorate
Deposited On:2022-06-07
Last Modified:2022-06-08
Downloads:0

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