John Wiley & Sons, Ltd.

The use of tetragnathid spiders as bioindicators of metal exposure at a coal ash spill site

0
On December 22, 2008 a dike containing coal fly ash from the Tennessee Valley Authority Kingston Fossil Plant failed and resulted in the largest coal ash spill in U.S. history. This study was designed to determine sediment metal concentrations at multiple site locations and to determine if site‐specific bioaccumulation of metals existed in tetragnathid spiders. Selenium and nickel were the only two metals to exceed the EPA sediment screening levels. Selenium concentrations in spiders were significantly higher at ash‐affected sites than those from reference sites. The ratio of methyl to total mercury found in spiders was found to be similar to other organisms (65–75%) and highlight the potential use of tetragnathid spiders an indicator species for tracing contaminant transfer between the aquatic and terrestrial ecosystem. Environ Toxicol Chem © 2013 SETAC

Customer comments

No comments were found for The use of tetragnathid spiders as bioindicators of metal exposure at a coal ash spill site. Be the first to comment!