NDLI: Ecological impacts of lead mining on Ozark streams: toxicity of sediment and pore water.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Besser, John M. Brumbaugh, William G. Allert, Ann L. Poulton, Barry C. Schmitt, Christopher J. Ingersoll, Christopher G.
Spatial Coverage	Missouri
Description	Country affiliation: United States Author Affiliation: Besser JM ( US Geological Survey, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, MO 65201, USA. jbesser@usgs.gov)
Abstract	We studied the toxicity of sediments downstream of lead-zinc mining areas in southeast Missouri, using chronic sediment toxicity tests with the amphipod, Hyalella azteca, and pore-water toxicity tests with the daphnid, Ceriodaphnia dubia. Tests conducted in 2002 documented reduced survival of amphipods in stream sediments collected near mining areas and reduced survival and reproduction of daphnids in most pore waters tested. Additional amphipod tests conducted in 2004 documented significant toxic effects of sediments from three streams downstream of mining areas: Strother Creek, West Fork Black River, and Bee Fork. Greatest toxicity occurred in sediments from a 6-km reach of upper Strother Creek, but significant toxic effects occurred in sediments collected at least 14 km downstream of mining in all three watersheds. Toxic effects were significantly correlated with metal concentrations (nickel, zinc, cadmium, and lead) in sediments and pore waters and were generally consistent with predictions of metal toxicity risks based on sediment quality guidelines, although ammonia and manganese may also have contributed to toxicity at a few sites. Responses of amphipods in sediment toxicity tests were significantly correlated with characteristics of benthic invertebrate communities in study streams. These results indicate that toxicity of metals associated with sediments contributes to adverse ecological effects in streams draining the Viburnum Trend mining district.
File Format	HTM / HTML
ISSN	01476513
Issue Number	2
Volume Number	72
e-ISSN	10902414
Journal	Ecotoxicology and Environmental Safety
Language	English
Publisher	Elsevier
Publisher Date	2009-02-01
Publisher Place	Netherlands
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Environmental Sciences Amphipoda Drug Effects Environmental Monitoring Geologic Sediments Analysis Lead Toxicity Mining Rivers Water Pollutants, Chemical Growth & Development Metabolism Animals Chemistry Missouri Journal Article Research Support, U.s. Gov't, Non-p.h.s.
Content Type	Text
Resource Type	Article
Subject	Pollution Health, Toxicology and Mutagenesis Public Health, Environmental and Occupational Health

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