An integrated approach to marine sediment assessment and polychaetes as biological indicators

Neave, Matthew, Gibb, K., Glasby, C., McGuinness, K., Nouwens, A., Parry, D. and Streten, C. (2009). An integrated approach to marine sediment assessment and polychaetes as biological indicators. In: Abstract Book SETAC North America 30th Annual Meeting. SETAC North America 30th Annual Meeting, New Orleans, LA, U.S.A., (). 19-23 November 2009.

Author Neave, Matthew
Gibb, K.
Glasby, C.
McGuinness, K.
Nouwens, A.
Parry, D.
Streten, C.
Title of paper An integrated approach to marine sediment assessment and polychaetes as biological indicators
Conference name SETAC North America 30th Annual Meeting
Conference location New Orleans, LA, U.S.A.
Conference dates 19-23 November 2009
Convener Society of Environmental Toxicology and Chemistry (SETAC)
Proceedings title Abstract Book SETAC North America 30th Annual Meeting
Journal name Annual Meeting SETAC
Place of Publication Pensacola, FL, U.S.A.
Publisher Society of Environmental Toxicology and Chemistry (SETAC)
Publication Year 2009
Year available 2009
Sub-type Published abstract
ISSN 1087-8939
Formatted Abstract/Summary
Polychaete worms are an important part of marine ecosystems and are considered good surrogates for macrobenthic community diversity (Olsgard and Somerfield 2000). Polychaetes are often used as indicators of marine environmental quality because of their prevalence and functional significance (Chariton et al. 2006; Fielman et al. 2000). We used impacted sediment to determine relationships between polychaete community change and impact. Several changes in the polychaete assemblages were apparent and many indicator taxa were recorded. Impacted sediment was only inhabited by a few polychaete species, including Spiochaetopterus sp (Chaetopteridae) and Sigambra sp (Pilargidae). The tube dwelling Spiochaetopterus sp is a filter feeder and surface deposit feeder while Sigambra sp is a burrower and sub-surface deposit feeder. The different ecological niches of these two worms provided an excellent opportunity to examine and compare pathways of metal exposure. As part of this assessment we compared pore water and sediment chemistry and used conventional techniques to measure metal bioavailability. This system provided an opportunity to empirically assess bioavailability vs bioaccessibility (Semple et al. 2004). To complement these bioavailability studies, we also measured metal accumulation in worms and tubes by ICP-MS, and investigated protein expression in these two species. These complementary studies will provide important evidence toward an understanding of heavy metal resistance in polychaetes. By integrating in situ chemistry, bioavailability, exposure routes and resistance mechanisms we are attempting to develop a tool for the assessment of contaminated sediment
Subjects 050204 Environmental Impact Assessment
Q-Index Code EX
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Presented during the Session "Digging deep into sediment toxicity testing methods" as Poster FP063.

 
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Created: Fri, 11 Feb 2011, 08:22:33 EST by Dr Amanda Nouwens on behalf of Aust Institute for Bioengineering & Nanotechnology