Journal
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
Volume 92, Issue -, Pages 191-198Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ecoenv.2012.04.023
Keywords
Mercury; Biomagnification; Aquatic; Floodplain; Food web; Meta-analysis
Categories
Funding
- E.I. du Pont de Nemours and Company
Ask authors/readers for more resources
Extending previous trophic transfer studies of the mercury-contaminated South River watershed, predictive models were built for mercury biomagnification in floodplain food webs at two more locations (North Park and Grand Cavern). Four of five models built to date based on methylmercury and delta N-15 met the a priori requirement for useful prediction (prediction r(2) approximate to 0.80). An additional factor included in models was organism thermoregulatory strategy (poikilothermy or homeothermy). The methylmercury food web biomagnification factors (FWMFs, fold increase per trophic level) for the North Park and Grand Cavern locations were 17.4 (95% CI of 9.5-31.6) and 6.2 (95% CI of 3.5-11.0) respectively. FWMF calculated in 2009 were 9.3 (95% CI of 5.4-16.2) for the Augusta Forestry Center and 25.1 (95% CI of 12.6-50.1) for Grottoes Town Park. The overall South River floodplain FWMF generated by meta-analysis of the four locations was 12.4 (95% CI of 6.8-22.3). These results supported previous findings that the South River floodplain food webs had higher biomagnification factors than the contiguous aquatic food web (4.6, 95% Cl of 3.6-5.7). Floodplain FWMFs were also more variable than those of the river. (C) 2013 Elsevier Inc. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available