Ecological effects of lead mining on Ozark streams: In-situ toxicity to woodland crayfish (Orconectes hylas)
Ecotoxicology and Environmental Safety
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Abstract
The Viburnum Trend mining district in southeast Missouri, USA is one of the largest producers of lead-zinc ore in the world. Previous stream surveys found evidence of increased metal exposure and reduced population densities of crayfish immediately downstream of mining sites. We conducted an in-situ 28-d exposure to assess toxicity of mining-derived metals to the woodland crayfish (Orconectes hylas). Crayfish survival and biomass were significantly lower at mining sites than at reference and downstream sites. Metal concentrations in water, detritus, macroinvertebrates, fish, and crayfish were significantly higher at mining sites, and were negatively correlated with caged crayfish survival. These results support previous field and laboratory studies that showed mining-derived metals negatively affect O. hylas populations in streams draining the Viburnum Trend, and that in-situ toxicity testing was a valuable tool for assessing the impacts of mining on crayfish populations.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Ecological effects of lead mining on Ozark streams: In-situ toxicity to woodland crayfish (Orconectes hylas) |
| Series title | Ecotoxicology and Environmental Safety |
| DOI | 10.1016/j.ecoenv.2008.08.005 |
| Volume | 72 |
| Issue | 4 |
| Year Published | 2009 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Ecotoxicology and Environmental Safety |
| First page | 1207 |
| Last page | 1219 |
| Google Analytic Metrics | Metrics page |