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Sediment copper bioassay for the brittlestar Amphiura elandiformis - technique development and management implications

Citation

MacLeod, CK and Eriksen, RS and Meyer, L, Sediment copper bioassay for the brittlestar Amphiura elandiformis - technique development and management implications, Echinoderms in a changing world, 5-9 January 2009, Hobart, Tasmania, pp. 219-226. ISBN 978-0-203-63156-0 (2013) [Refereed Conference Paper]

Copyright Statement

Copyright 2013 Taylor and Francis Group

DOI: doi:10.1201/b13769-32

Abstract

Copper contamination is a concern in many marine and estuarine systems. In the Derwent estuary levels exceed ANZECC sediment quality guidelines in many areas. This study examined copper toxicity in the brittlestar Amphiua elandiformis with a view to relating the findings to environmental observations and ecosystem management. Knowing the concentration of copper which adversely affects brittlestars would help managers to interpret the significance of presence/absence data collected during monitoring, and to better understand ecological impacts and the current status of sediments. Species specific sediment bioassay protocols were developed to accommodate the larger than normal amounts of sediment required for brittlestar testing. Acute exposure tests undertaken in spiked and "naturally" contaminated sediments indicated a negative response (e.g. lethargy, surfacing, autotomy) at and above 165 mg Cu/kg. These findings suggest that where sediment copper concentrations exceed 270mg/kg (ANZECC high guideline value) A. elandiformis distribution may be affected.

Item Details

Item Type:Refereed Conference Paper
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Aquatic Ecosystem Studies and Stock Assessment
Objective Division:Environment
Objective Group:Ecosystem Assessment and Management
Objective Field:Ecosystem Assessment and Management at Regional or Larger Scales
Author:MacLeod, CK (Associate Professor Catriona MacLeod)
Author:Eriksen, RS (Dr Ruth Eriksen)
Author:Meyer, L (Miss Lisa Meyer)
ID Code:83103
Year Published:2013
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2013-03-01
Last Modified:2016-11-03
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