| great horned owl (bubo virginianus) dietary exposure to pcdd/df in the tittabawassee river floodplain in midland, michigan, usa. | soils and sediments in the floodplain of the tittabawassee river downstream of midland, michigan, usa contain elevated concentrations of polychlorinated dibenzofurans (pcdf) and polychlorinated dibenzo-p-dioxins (pcdd). as a long-lived, resident top predator, the great horned owl (bubo virginianus; gho) has the potential to be exposed to bioaccumulative compounds such as pcdd/df. site-specific components of the gho diet were collected along 115 km of the tittabawassee, pine, chippewa, and sagina ... | 2010 | 20872700 |
| risk assessment methodologies for exposure of great horned owls (bubo virginianus) to pcbs on the kalamazoo river, michigan. | dietary exposures of great horned owls (gho; bubo virginianus) to polychlorinated biphenyls (pcbs) in the terrestrial food web at the kalamazoo river, michigan, usa, were examined. average potential daily doses (apdd) in gho diets were 7- to 10-fold and 3-fold greater at the more contaminated location versus a reference location for site-specific exposures quantified as total pcbs and 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (teq(who-avian)), respectively. wetland/aquatic prey contributed ... | 2008 | 18260206 |
| risk assessment of great horned owls (bubo virginianus) exposed to polychlorinated biphenyls and ddt along the kalamazoo river, michigan, usa. | the great horned owl (gho; bubo virginianus) was used in a multiple lines of evidence study of polychlorinated biphenyls (pcbs) and p,p'-dichlorodiphenyltrichloroethane (ddt) exposures at the kalamazoo river superfund site (krss), kalamazoo, michigan, usa. the study examined risks from total pcbs, including 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (teqworld health organization [who]-avian toxicity equivalency factor [tef]), and total ddts (sum of ddt, dichlorodiphenyldichloroethylene [dde ... | 2007 | 17665678 |
| differential accumulation of polychlorinated biphenyl congeners in the terrestrial food web of the kalamazoo river superfund site, michigan. | a series of field studies was conducted to determine the bioaccumulation of polychlorinated biphenyl (pcb) congeners in the terrestrial food web of the kalamazoo river flood plain. samples included colocated soils, native plants likely to be consumed by wildlife, several taxa of terrestrial invertebrates, small mammals, passerine bird eggs, nestlings, and adults, and great horned owl plasma and eggs. mean concentrations of total pcbs in samples from the former trowbridge impoundment were 6.5 mg/ ... | 2005 | 16173551 |