PMID: 15230331Jul 3, 2004Paper

Relationships among exceedences of metals criteria, the results of ambient bioassays, and community metrics in mining-impacted streams

Environmental Toxicology and Chemistry
Michael B GriffithAlan T Herlihy

Abstract

If bioassessments are to help diagnose the specific environmental stressors affecting streams, a better understanding is needed of the relationships between community metrics and ambient criteria or ambient bioassays. However, this relationship is not simple, because metrics assess responses at the community level of biological organization, while ambient criteria and ambient bioassays assess or are based on responses at the individual level. For metals, the relationship is further complicated by the influence of other chemical variables, such as hardness, on their bioavailability and toxicity. In 1993 and 1994, U.S. Environmental Protection Agency (U.S. EPA) conducted a Regional Environmental Monitoring and Assessment Program (REMAP) survey on wadeable streams in Colorado's (USA) Southern Rockies Ecoregion. In this ecoregion, mining over the past century has resulted in metals contamination of streams. The surveys collected data on fish and macroinvertebrate assemblages, physical habitat, and sediment and water chemistry and toxicity. These data provide a framework for assessing diagnostic community metrics for specific environmental stressors. We characterized streams as metals-affected based on exceedence of hardness-adjuste...Continue Reading

Citations

Jul 29, 2011·Environmental Science & Technology·Travis S SchmidtPaul J Lamothe
May 1, 2007·Marine Pollution Bulletin·Peter M Chapman
Jul 2, 2011·Environmental Toxicology and Chemistry·Yuichi IwasakiMayu Sakakibara
Sep 21, 2010·Environmental Toxicology and Chemistry·Travis S SchmidtCarma A San Juan
Aug 10, 2005·Environmental Pollution·Joseph R Bidwell, John R Gorrie
Apr 3, 2010·EcoHealth·Nathaniel P Hitt, Michael Hendryx

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