Geologic Sediments

• 

  Subject Areas on Research

  • A coupled geomorphic and ecological model of tidal marsh evolution. 
  • A molecular-based approach for examining responses of eukaryotes in microcosms to contaminant-spiked estuarine sediments. 
  • A three-stage symbiosis forms the foundation of seagrass ecosystems. 
  • Accumulation of atmospheric and sedimentary PCBs and toxaphene in a Lake Michigan food web. 
  • Analysis of alkylphenol ethoxylate metabolites in the aquatic environment using liquid chromatography-electrospray mass spectrometry. 
  • Analysis of engineered nanomaterials in complex matrices (environment and biota): general considerations and conceptual case studies. 
  • Antimicrobial effects of commercial silver nanoparticles are attenuated in natural streamwater and sediment. 
  • Antioxidant defenses in killifish (Fundulus heteroclitus) exposed to contaminated sediments and model prooxidants: short-term and heritable responses. 
  • Assessing Cancer Risk Associated with Aquatic Polycyclic Aromatic Hydrocarbon Pollution Reveals Dietary Routes of Exposure and Vulnerable Populations. 
  • Assessing different mechanisms of toxicity in mountaintop removal/valley fill coal mining-affected watershed samples using Caenorhabditis elegans. 
  • Australopithecus sediba at 1.977 Ma and implications for the origins of the genus Homo. 
  • Benthic and pelagic pathways of methylmercury bioaccumulation in estuarine food webs of the northeast United States. 
  • Bioaccumulation and toxicity of single-walled carbon nanotubes to benthic organisms at the base of the marine food chain. 
  • Biogeochemistry of nonylphenol ethoxylates in urban estuarine sediments. 
  • Biogeography and ecological setting of Indian Ocean hydrothermal vents. 
  • Brominated and chlorinated flame retardants in San Francisco Bay sediments and wildlife. 
  • Characterization and quantitative analysis of single-walled carbon nanotubes in the aquatic environment using near-infrared fluorescence spectroscopy. 
  • Comparison of manufactured and black carbon nanoparticle concentrations in aquatic sediments. 
  • Completeness of the geological record. 
  • Compound- and mixture-specific differences in resistance to polycyclic aromatic hydrocarbons and PCB-126 among Fundulus heteroclitus subpopulations throughout the Elizabeth River estuary (Virginia, USA). 
  • Contamination of rural surface and ground water by endosulfan in farming areas of the Western Cape, South Africa. 
  • Cytochrome P4501A (CYP1A) in killifish (Fundulus heteroclitus): heritability of altered expression and relationship to survival in contaminated sediments. 
  • Damming the rivers of the Amazon basin. 
  • Degradation of nonylphenol ethoxylates in estuarine sediment under aerobic and anaerobic conditions 
  • Differential display of hepatic mRNA from killifish (Fundulus heteroclitus) inhabiting a Superfund estuary. 
  • Dissolved Organic Matter Quality in a Shallow Aquifer of Bangladesh: Implications for Arsenic Mobility. 
  • Distribution and fate of neutral alkylphenol ethoxylate metabolites in a sewage-impacted urban estuary. 
  • Ecosystem engineers activate mycorrhizal mutualism in salt marshes. 
  • Effects of sewage-impacted sediment on reproduction in the benthic crustacean Leptocheirus plumulosus. 
  • Effects of single-walled carbon nanotubes on the bioavailability of PCBs in field-contaminated sediments. 
  • Environmental biodegradability of [¹⁴C] single-walled carbon nanotubes by Trametes versicolor and natural microbial cultures found in New Bedford Harbor sediment and aerated wastewater treatment plant sludge. 
  • Environmental impacts of the Tennessee Valley Authority Kingston coal ash spill. 1. Source apportionment using mercury stable isotopes. 
  • Environmental impacts of the Tennessee Valley Authority Kingston coal ash spill. 2. Effect of coal ash on methylmercury in historically contaminated river sediments. 
  • Evolution and biogeography of deep-sea vent and seep invertebrates. 
  • Fungi in the Marine Environment: Open Questions and Unsolved Problems. 
  • Genotoxicity in Atlantic killifish (Fundulus heteroclitus) from a PAH-contaminated Superfund site on the Elizabeth River, Virginia. 
  • Geological and taphonomic context for the new hominin species Homo naledi from the Dinaledi Chamber, South Africa. 
  • Geological setting and age of Australopithecus sediba from southern Africa. 
  • Giant deep-sea protist produces bilaterian-like traces. 
  • Global analysis of nitrogen and phosphorus limitation of primary producers in freshwater, marine and terrestrial ecosystems. 
  • Hepatic Responses of Juvenile Fundulus heteroclitus from Pollution-adapted and Nonadapted Populations Exposed to Elizabeth River Sediment Extract. 
  • Impacts of coal ash on methylmercury production and the methylating microbial community in anaerobic sediment slurries. 
  • Impacts of shale gas wastewater disposal on water quality in western Pennsylvania. 
  • Influence of Sulfide Nanoparticles on Dissolved Mercury and Zinc Quantification by Diffusive Gradient in Thin-Film Passive Samplers. 
  • Influence of sediment-amendment with single-walled carbon nanotubes and diesel soot on bioaccumulation of hydrophobic organic contaminants by benthic invertebrates. 
  • Integrated Assessment of Artisanal and Small-Scale Gold Mining in Ghana-Part 2: Natural Sciences Review. 
  • Isotopic imprints of mountaintop mining contaminants. 
  • Later life swimming performance and persistent heart damage following subteratogenic PAH mixture exposure in the Atlantic killifish (Fundulus heteroclitus). 
  • Long-term transformation and fate of manufactured ag nanoparticles in a simulated large scale freshwater emergent wetland. 
  • Metabolism of PCBs by the deepwater sculpin (Myoxocephalus thompsoni). 
  • Mobilization of arsenic and other naturally occurring contaminants in groundwater of the Main Ethiopian Rift aquifers. 
  • Net methylation of mercury in estuarine sediment microcosms amended with dissolved, nanoparticulate, and microparticulate mercuric sulfides. 
  • Organic forms dominate hydrologic nitrogen export from a lowland tropical watershed. 
  • Overlooked mountain rock pools in deserts are critical local hotspots of biodiversity. 
  • Paleoclimate. Trans-Atlantic climate connections. 
  • Patterns of heritability of decreased EROD activity and resistance to PCB 126-induced teratogenesis in laboratory-reared offspring of killifish (Fundulus heteroclitus) from a creosote-contaminated site in the Elizabeth River, VA, USA. 
  • Physical, chemical, and mineralogical characteristics of a reservoir sediment delta (Lake Powell, U.S.A.) and implications for water quality during low water level. 
  • Polycyclic aromatic hydrocarbon bioaccumulation by meiobenthic copepods inhabiting a superfund site: techniques for micromass body burden and total lipid analysis. 
  • Quantification of Mercury Bioavailability for Methylation Using Diffusive Gradient in Thin-Film Samplers. 
  • Rapid degradation of Deepwater Horizon spilled oil by indigenous microbial communities in Louisiana saltmarsh sediments. 
  • Recent declines in PAH, PCB, and toxaphene levels in the northern Great Lakes as determined from high resolution sediment cores. 
  • Relative contributions of mercury bioavailability and microbial growth rate on net methylmercury production by anaerobic mixed cultures. 
  • Remodelling of the Vibrio cholerae membrane by incorporation of exogenous fatty acids from host and aquatic environments. 
  • Scientists as stakeholders in conservation of hydrothermal vents. 
  • Sediment quality guidelines: challenges and opportunities for improving sediment management. 
  • Sedimentary nonylphenol contamination in an urbanized, industrialized segment of the Delaware River estuary, USA. 
  • Solving the problem at the source: Controlling Mn release at the sediment-water interface via hypolimnetic oxygenation. 
  • Spatial response of coastal marshes to increased atmospheric CO2. 
  • Survey of the potential environmental and health impacts in the immediate aftermath of the coal ash spill in Kingston, Tennessee. 
  • Teratogenesis in Fundulus heteroclitus embryos exposed to a creosote-contaminated sediment extract and CYP1A inhibitors. 
  • The Anthropocene is functionally and stratigraphically distinct from the Holocene. 
  • The anatomy of Dolichocebus gaimanensis, a stem platyrrhine monkey from Argentina. 
  • The history of South American tropical precipitation for the past 25,000 years. 
  • The impact of coal combustion residue effluent on water resources: a North Carolina example. 
  • Tighten regulations on deep-sea mining. 
  • Tissue and cellular alterations in Asian clam (Potamocorbula amurensis) from San Francisco Bay: toxicological indicators of exposure and effect? 
  • Transient floral change and rapid global warming at the Paleocene-Eocene boundary. 
  • Use of a novel sediment exposure to determine the effects of triclosan on estuarine benthic communities. 
  • Use of biological detection methods to assess dioxin-like compounds in sediments of Bohai Bay, China. 
  • Water subsidies from mountains to deserts: their role in sustaining groundwater-fed oases in a sandy landscape. 
  • Watershed urbanization alters the composition and function of stream bacterial communities. 
  • Whole-community facilitation regulates biodiversity on Patagonian rocky shores. 
• 

  Keywords of People

  • Dwyer, Gary S, Instructor in Earth and Ocean Sciences, Earth and Ocean Sciences
  • Hsu-Kim, Heileen, Professor in the Department of Civil and Environmental Engineering, Civil and Environmental Engineering
  • Kay, Richard Frederick, Professor of Evolutionary Anthropology, Evolutionary Anthropology
  • Pratson, Lincoln F., Gendell Family Professor of Energy and Environment, Duke University Energy Initiative