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Articles 31 - 37 of 37
Full-Text Articles in Life Sciences
Ethnic Differences In Risk From Mercury Among Savannah River Fishermen, Joanna Burger, Karen F. Gaines, Michael Gochfeld
Ethnic Differences In Risk From Mercury Among Savannah River Fishermen, Joanna Burger, Karen F. Gaines, Michael Gochfeld
Karen F. Gaines
Fishing plays an important role in people's lives and contaminant levels in fish are a public health concern. Many states have issued consumption advisories; South Carolina and Georgia have issued them for the Savannah River based on mercury and radionuclide levels. This study examined ethnic differences in risk from mercury exposure among people consuming fish from the Savannah River, based on site-specific consumption patterns and analysis of mercury in fish. Among fish, there were significant interspecies differences in mercury levels, and there were ethnic differences in consumption patterns. Two methods of examining risk are presented: (1) Hazard Index (HI), and …
Jet Engine Certification Standards, Paul Eschenfelder
Jet Engine Certification Standards, Paul Eschenfelder
Paul F. Eschenfelder
No abstract provided.
Metals And Metallothionein In The Liver Of Raccoons: Utility For Environmental Assessment And Monitoring, Joanna Burger, Christine G. Lord, Edward J. Yurkow, Lynn Mcgrath, Karen F. Gaines, I. Lehr Brisbin Jr., Michael Gochfeld
Metals And Metallothionein In The Liver Of Raccoons: Utility For Environmental Assessment And Monitoring, Joanna Burger, Christine G. Lord, Edward J. Yurkow, Lynn Mcgrath, Karen F. Gaines, I. Lehr Brisbin Jr., Michael Gochfeld
Karen F. Gaines
The relationship between metallothionein levels and concentrations of several metals and radionuclides was examined in liver tissues of raccoons (Procyon lotor, n = 47) from the Department of Energy’s Savannah River Site in South Carolina to determine the applicability of metallothioneins as an initial screening device for exposure assessment in free-living mammals and environmental monitoring. Using a fluorescent marker and a cell sorter to measure metallothionein, a significant positive correlation was found across animals between levels of metallothioneins and concentrations of selenium (Pearson’s r = .30) , mercury (Pearson’s r = .31) , and copper (Pearson’s r = .30) in …
Raccoons As Potential Vectors Of Radionuclide Contamination To Human Food Chains From A Nuclear Industrial Site, Karen F. Gaines, Christine G. Lord, C. Shane Boring, I. Lehr Brisbin Jr., Michael Gochfeld, Joanna Burger
Raccoons As Potential Vectors Of Radionuclide Contamination To Human Food Chains From A Nuclear Industrial Site, Karen F. Gaines, Christine G. Lord, C. Shane Boring, I. Lehr Brisbin Jr., Michael Gochfeld, Joanna Burger
Karen F. Gaines
Although the raccoon (Procyon lotor) is commonly harvested and consumed throughout the southeastern United States, little is known regarding the fate and effects of environmental pollutants to this species, and the potential for it to act as a contaminant vector to humans or other predators. Muscle and liver tissues were collected from 76 raccoons from locations on and near the Department of Energy's Savannah River Site (SRS) in South Carolina and analyzed for radiocesium (137Cs). Raccoons were trapped from areas near a former reactor cooling reservoir known to be contaminated from former nuclear production activities, a stream drainage system also …
Foraging Ecology Of The Endangered Wood Stork Recorded In The Stable Isotope Signature Of Feathers, Christopher S. Romanek, Karen F. Gaines, A. L. Bryan Jr., I. L. Brisbin Jr.
Foraging Ecology Of The Endangered Wood Stork Recorded In The Stable Isotope Signature Of Feathers, Christopher S. Romanek, Karen F. Gaines, A. L. Bryan Jr., I. L. Brisbin Jr.
Karen F. Gaines
Down feathers and regurgitant were collected from nestling wood storks (Mycteria americana) from two inland and two coastal breeding colonies in Georgia. The stable isotopic ratios of carbon ( 13 C/12 C) and nitrogen ( 15N/ 14N) in these materials were analyzed to gain insights into the natal origins of juvenile storks and the foraging activities of adults. Down feathers differed in δ 13 C between inland and coastal colonies, having average isotopic values that reflected the sources of carbon fixed in biomass at the base of the food web. Feathers from the inland colonies differed between colonies in δ …
The Effects Of Drought On Foraging Habitat Selection Of Breeding Wood Storks In Coastal Georgia, Karen F. Gaines, A. Lawrence Bryan Jr., Philip M. Dixon
The Effects Of Drought On Foraging Habitat Selection Of Breeding Wood Storks In Coastal Georgia, Karen F. Gaines, A. Lawrence Bryan Jr., Philip M. Dixon
Karen F. Gaines
Foraging habitat use by Wood Storks (Mycteria americana) during the breeding season was studied for three coastal colonies during a drought year and compared to habitat use during normal rainfall years. Information on the distribution of wetland habitat types was derived using U.S. Fish and Wildlife Service National Wetland In- ventory (NWI) data within a Geographic Information System (GIS). Foraging locations were obtained by following storks from their colonies in a fixed-winged aircraft. Differences in hydrologic condition and, the resulting prey availability in coastal zone freshwater wetlands greatly affected foraging habitat use and breeding success of the three stork colonies. …
Attitudes And Perceptions About Ecological Resources And Hazards Of People Living Around The Savannah River Site, Joanna Burger, Jessica Sanchez, J. Whitfield Gibbons, Jeanine Ondrof, Robert Ramos, Michael J. Mcmahon, Karen F. Gaines, Christine Lord, Marie Fullmer, Michael Gochfeld
Attitudes And Perceptions About Ecological Resources And Hazards Of People Living Around The Savannah River Site, Joanna Burger, Jessica Sanchez, J. Whitfield Gibbons, Jeanine Ondrof, Robert Ramos, Michael J. Mcmahon, Karen F. Gaines, Christine Lord, Marie Fullmer, Michael Gochfeld
Karen F. Gaines
Although considerable attention is devoted to environmental monitoring and assessment with respect to both pollutants and the status of particular plant or animal populations, less attention is devoted to assessing people's attitudes about the relative importance of ecological resources. In this paper we examine the attitudes and perceptions about ecological resources of people living around the Department of Energy's Savannah River Site (SRS), in South Carolina. Our overall hypothesis is that people who are directly affected by the possible outcomes and consequences of a particular hazard (i.e., those people employed at SRS) will undervalue the risks and overvalue the potential …