| mercury concentrations in tidal marsh sparrows and their use as bioindicators in delaware bay, usa. | mercury (hg) contamination from industrial sources is pervasive throughout north america and is recognized by the us environmental protection agency as a health hazard for wildlife and humans. avian species are commonly used as bioindicators of hg because they are sensitive to contaminants in the environment and are relatively easy to sample. however, it is important to select the appropriate avian species to use as a bioindicator, which should be directly related to the project objectives. in t ... | 2010 | 20135218 |