A manipulative field experiment examining the effect of heavy metal and hydrocarbon contaminated sediment on the recruitment of soft-sediment infauna.Entry ID: ASAC_2201_Casey_SRE3
Abstract: The effects of hyrdocarbon and heavy metal contamination of marine sediments on recruitment of soft-sediment assemblages were examined in a field experiment at Casey Station, East Antarctica. Three locations were used, a polluted bay adjacent to an old disused tip site (Brown Bay) and two control locations (O'Brien Bay and Sparkes Bay). At each location three types of defaunated sediment ... (hydrocarbon treated, heavy metal treated and control) were placed at approximately 15 m depth and left in place for 3 months, from December to February. Sediments were artifically contaminated with hydrocarbons and metals at concentrations which were representative of levels found in sediments at contaminated sites around Casey Station.
There were large differences in recruitment between the three locations and significant differences between the control and contaminated sediment. Sediments in the experiment were also examined for evidence of degradation and attenuation of hydrocarbons and heavy metals. A total of 104 recruitment samples were collected. Samples were sieved at 500 micro m and sorted mainly to species. Other work to arise from this experiment includes examination of the effects on diatom communities and microbial communities.
Data includes fauna, metals and hydrocarbon concentrations in experiment. Pre-deployment concentrations (before experiment was deployed in water) are indicated as &pre-deployment&. Concentrations of contaminants in sediments surrounding the experiment (within several metres) are indicated as &surrounding&.
This project also links to ASAC 1100.
The fields in this dataset are:
Site and replicate
Special Antarctic Blend Fuel (SAB)
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Start Date: 1998-12-01Stop Date: 1999-02-17
ISO Topic Category
Use Constraints FUNDING SOURCE: National Science Foundation (USA) grant OPP0229898,
and JOI/USSSP postcruise funds to A. E. Shevenell.
Data Set Progress
Distribution Media: ftp
Distribution Format: text, excel
Email: ashevenell at ocean.washington.edu
School of Oceanography, Box 355351
Province or State: WA
Postal Code: 98195-7940
Phone: (805) 893-8665
Fax: (805) 893-2314
Email: lea at magic.ucsb.edu
Department of Geological Sciences and Marine Science Institute University of California
City: Santa Barbara
Province or State: CA
Postal Code: 93106
Shevenell, A.E., J.P. Kennett, and D.W. Lea. 2004. Middle Miocene Southern
Ocean Cooling and Antarctic Cryosphere Expansion. Science, Vol. 305, pp.1766,
17 September 2004.
Creation and Review Dates
DIF Creation Date: 2006-12-26
Last DIF Revision Date: 2007-07-02