eCite Digital Repository

Influence of a burrowing, metal-tolerant polychaete on benthic metabolism, denitrification and nitrogen regeneration in contaminated estuarine sediments

Citation

Banks, JL and Ross, DJ and Keough, MJ and MacLeod, C and Keane, JP and Eyre, BD, Influence of a burrowing, metal-tolerant polychaete on benthic metabolism, denitrification and nitrogen regeneration in contaminated estuarine sediments, Marine Pollution Bulletin, 68, (1-2) pp. 30-37. ISSN 0025-326X (2013) [Refereed Article]

Copyright Statement

2013 Elsevier Ltd. All rights reserved.

DOI: doi:10.1016/j.marpolbul.2013.01.002

Abstract

We investigated the effects of the burrowing cirratulid polychaete Cirriformia filigera (Delle Chiaje, 1828) on benthic respiration and nitrogen regeneration in metal-contaminated estuarine sediments using laboratory mesocosms. C. filigera is a dominant component of assemblages in the most severely contaminated sediments within the Derwent estuary, southern Australia. In the presence of C. filigera sediment O2 consumption doubled, with approximately 55% of this increase due to their respiration and the remaining 45% attributable to oxidation reactions and increased microbial respiration associated with burrow walls. Combined NO3 and NO2 fluxes were unaffected. The addition of labile organic matter did not affect benthic fluxes, in the presence or absence of C. filigera, presumably due to the short timeframe of the experiment and naturally enriched test sediments. The results suggest that a combination of tolerance and burrowing activity enables this species to provide an ecosystem service in the removal of N from contaminated sites.

Item Details

Item Type:Refereed Article
Keywords:Ecosystem service Metal tolerance Bioturbation Denitrification Cirriformia filigera Southern Australia
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:Ross, DJ (Dr Jeff Ross)
Author:MacLeod, C (Associate Professor Catriona MacLeod)
Author:Keane, JP (Dr John Keane)
ID Code:83058
Year Published:2013
Web of Science® Times Cited:8
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2013-02-28
Last Modified:2016-10-11
Downloads:0

Repository Staff Only: item control page