| risk, mercury levels, and birds: relating adverse laboratory effects to field biomonitoring. | there is an abundance of field data on levels of mercury in a variety of organisms and there are a number of studies that demonstrate the adverse effects of mercury on laboratory animals, but few studies examine the relationship between the two. thus it is often difficult to determine the ecological relevance of mercury concentrations found in nature, or to predict the ecosystem consequences of current levels. in this paper we review the levels in tissues that are associated with adverse effects ... | 1997 | 9417847 |
| eggshell thickness in marine birds in the new york bight--1970s to 1990s. | maintaining eggshell thickness is critical for birds, as thin eggshells result in breakage during incubation, with subsequent hatching failure. beginning in the 1960s, eggshell thickness has been used as a biomarker of exposure to chlorinated hydrocarbon pesticides, as a measure of avian population health, and as a predictor of potential reproductive failures. in this study, eggs were collected from four coastal bird species nesting in the new york bight (cedar beach, ny to barnegat bay, nj) in ... | 1995 | 7661628 |