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Exposure Research

Records 1 to 64 of 64
2015
Knightes, Chris, G. Davis, H. Golden, P. Conrads, P. Bradley, AND C. Journey. Simulating Mercury And Methyl Mercury Stream Concentrations At Multiple Scales in a Wetland Influenced Coastal Plain Watershed (McTier Creek, SC, USA). Presented at Fifth Interagency Conference on Research in the Watersheds (ICRW5), Charleston, SC, March 02 - 05, 2015.
2014
Price, Katie, Tom Purucker, S. Kraemer, J. Babendreier, AND Chris Knightes. Comparison of radar and gauge precipitation data in watershed models across varying spatial and temporal scales. Hydrological Processes. John Wiley & Sons, Ltd., Indianapolis, IN, 28(9):3505–3520, (2013).
Golden, H., C. Lane, D. Amatya, K. Bandilla, H. Raanan Kiperwas, Chris Knightes, AND H. Ssegane. Hydrologic connectivity between geographically isolated wetlands and surface water systems: A review of select modeling methods. ENVIRONMENTAL MODELLING & SOFTWARE. Elsevier Science, New York, NY, 53(1):190-206, (2014).
Knightes, Chris, H. Golden, C. Journey, G. Davis, P. Conrads, M. Marvin-DiPasquale, M. Brigham, AND P. Bradley. Mercury and methylmercury stream concentrations in a Coastal Plain watershed: A multi-scale simulation analysis. ENVIRONMENTAL POLLUTION. Elsevier Science Ltd, New York, NY, 187:182-192, (2014).
Bouchard, D., X. Chang, Chris Knightes, AND I. Chowdhury. Parameterizing A Surface Water Model for Multiwalled Carbon Nanotubes. Presented at 247th ACS National Meeting, Dallas, TX, March 16 - 20, 2014.
Bouchard, D., X. Chang, Chris Knightes, AND I. Chowdhury. Parameterizing water quality analysis and simulation program (WASP) for carbon-based nanomaterials. Presented at ACS Fall Meeting, San Francisco, CA, August 04 - 08, 2014.
Gabriel, M., Chris Knightes, R. Dennis, AND E. Cooter. Potential Impact of Clean Air Act Regulations on Nitrogen Fate and Transport in the Neuse River Basin. ENVIRONMENTAL MODELING AND ASSESSMENT. Baltzer Science Publishers BV, Bussum, Netherlands, (online):10.1007/s10666-014-9, (2014).
Gabriel, M., Chris Knightes, E. Cooter, AND R. Dennis. The Impacts of Different Meteorology Data Sets on Nitrogen Fate and Transport in the SWAT Watershed Model. ENVIRONMENTAL MODELING AND ASSESSMENT. Baltzer Science Publishers BV, Bussum, Netherlands, 19(4):301-314, (2014).
2013
Golden, H., C. Knightes, P. Conrads, T. Feaster, G. Davis, S. Benedict, AND P. Bradley. Climate change and watershed mercury export: a multiple projection and model analysis. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY. Society of Environmental Toxicology and Chemistry, Pensacola, FL, 32(9):2165-2174, (2013).
Riva-Murray, K., P. Bradley, B. Scudder Eikenberry, C. D. KNIGHTES, C. Journey, M. Brigham, AND D. Button. Optimizing Stream Water Mercury Sampling for Calculation of Fish Bioaccumulation Factors. ENVIRONMENTAL SCIENCE AND TECHNOLOGY. John Wiley & Sons, Ltd., Indianapolis, IN, 47(11):5904-5912, (2013).
Gabriel, M., Chris Knightes, E. Cooter, AND R. Dennis. Relative Sensitivity of Simulated Nitrogen Discharge to Projected Changes in Climate and Land Cover for Two Watersheds in North Carolina, USA. Presented at AGU Fall Meeting 2013, San Francisco, CA, December 09 - 13, 2013.
2012
GOLDEN, H. E., C. D. KNIGHTES, P. Conrads, G. Davis, T. Feaster, C. Journey, S. Benedict, M. Brigham, AND P. Bradley. Characterizing mercury concentrations and fluxes in a coastal plain watershed: insights from dynamic modeling and data. Journal of Geophysical Research - Biogeosciences. American Geophysical Union, Washington, DC, 117(G01006):1 - 17, (2012).
Canu, D., A. Acquavita, C. Knightes, G. Mattassi, I. Scroccaro, AND C. Solidoro. Developing a model for mercury cycle in the Marano-Grado Lagoon (Italy). 1Chapter 15, F. Jordan and S.E. Jorgensen (ed.), Models of the Ecological Hierarchy from Molecules to Ecosphere. ELSEVIER, AMSTERDAM, Holland, 25:239-258, (2012).
Knightes, C., H. Golden, P. Bradley, G. Davis, C. Journey, AND P. Conrads. Modeling Mercury Exposure at Different Scales in the McTier Creek Watershed and Edisto River Basin, SC USA. Presented at 8th National Monitoring Conference, Portland, OR, April 30 - May 04, 2012.
2011
JOHNSTON, J. M., D. J. MCGARVEY, M. C. BARBER, G. F. LANIAK, J. E. BABENDREIER, R. S. PARMAR, K. L. WOLFE, S. R. KRAEMER, M. J. CYTERSKI, C. D. KNIGHTES, B. RASHLEIGH, L. A. SUAREZ, AND R. B. AMBROSE. An Integrated Modeling Framework for Performing Environmental Assessments: Application to Ecosystem Services in the Albemarle-Pamlico Basins (NC and VA,USA). ECOLOGICAL MODELLING. Elsevier Science BV, Amsterdam, Netherlands, 222(14):2471-2484, (2011).
GOLDEN, H. E., C. D. KNIGHTES, P. A. Conrads, G. M. Davis, T. D. Feaster, C. A. Journey, S. Benedict, M. E. Brigham, AND P. M. Bradley. Characterizing mercury concentrations and flux dynamics in a coastal plain watershed using multiple models. Presented at 10th International Conference on Mercury as a Global Pollutant, Halifax, NS, CANADA, July 24 - 29, 2011.
GOLDEN, H. E., C. D. KNIGHTES, P. Bradley, G. Davis, T. Feaster, S. Benedict, C. Journey, P. Conrads, AND M. Brigham. Characterizing mercury concentrations and flux dynamics in a coastal plain watershed using multiple models and data. Presented at 10th International Conference on Mercury as a Global Pollutant, Halifax, NS, CANADA, July 24 - 29, 2011.
GOLDEN, H. E., C. D. KNIGHTES, P. Conrads, G. Davis, T. Feaster, S. Benedict, C. Journey, M. Brigham, AND P. Bradley. Mercury dynamics in a coastal plain watershed: insights from multiple models and empirical data. Presented at American Geophysical Union Fall Meeting, San Francisco, CA, December 04 - 09, 2011.
GOLDEN, H. E. AND C. D. KNIGHTES. Simulated Watershed Mercury and Nitrate Flux Responses to Multiple Land Cover Conversion Scenarios. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY. Society of Environmental Toxicology and Chemistry, Pensacola, FL, 30(4):773-786, (2011).
2010
KNIGHTES, C. D. Bioaccumulation of Mercury in Fish. Presented at Mercury Workshop: Global Emissions and US Exposures, Washington, DC, January 14, 2010.
SUNDERLAND, E., C. D. KNIGHTES, K. E. VON STACKELBERG, AND N. A. STIBER. Environmental Fate and Bioaccumulation Modelling at the US Environmental Protection Agency: Application to Inform Decision-Making. Chapter 1, G. Hanrahan (ed.), Modelling of Pollutants in Complex Environmental Systems, Volume II. ILM Publications, SAINT ALBANS, HERTFORDSHIRE, Uk, , 3-42, (2010).
GOLDEN, H. E. AND C. D. KNIGHTES. Grid Based Mercury Model (GBMM) Application in McTier Creek and Fishing Brook Watersheds: Progress and Updates. Presented at USEPA/USGS Mercury in Streams Ecosystems Team Meeting, Troy, NY, May 03 - 06, 2010.
GOLDEN, H. E., C. D. KNIGHTES, E. COOTER, R. L. DENNIS, R. C. GILLIAM, AND K. FOLEY. Linking Air Quality and Watershed Models for Environmental Assessments: Analysis of the Effects of Model-Specific Precipitation Estimates on Calculated Water Flux. ENVIRONMENTAL MODELLING & SOFTWARE. Elsevier Science, New York, NY, 25(12):1722-1737, (2010).
KNIGHTES, C. D. Modeling Hg in Streams using the WASP Modeling Framework. Presented at USEPA/USGS Mercury in Streams Ecosystems Team Meeting, Troy, NY, May 03 - 06, 2010.
Selin, N. E., E. M. Sunderland, C. D. KNIGHTES, AND R. P. Mason. Sources of Mercury Exposure for U.S. Seafood Consumers: Implications for Policy. ENVIRONMENTAL HEALTH PERSPECTIVES. National Institute of Environmental Health Sciences (NIEHS), Research Triangle Park, NC, 118(1):137-143, (2010).
2009
KNIGHTES, C. D. Application of WASP8 - Hg Module for Modeling Mercury Transport and Transformation along the Sudbury River, Massachusetts. Presented at Sudbury River Stakeholders Meeting, Boston, MA, October 06, 2009.
KNIGHTES, C. D. Development and Example Application of a Pilot Model for the Biogeochemical Cycling of Mercury in Watersheds: SERAFM-NPS. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-09/114 (NTIS PB2010-104717), 2009.
GOLDEN, H. E. AND C. D. KNIGHTES. Grid Based Mercury Model (GBMM): Overview, Updates, and Next Steps. Presented at EPA/USGS Mercury in Streams Ecosystems Meeting, Athens, GA, March 17 - 19, 2009.
KNIGHTES, C. D. Mercury in Our Air, Water and Food: the Global, Regional and Local Toxin. Presented at Nicholas School of the Environment Spring Symposium at Duke University, Durham, NC, February 14, 2009.
GOLDEN, H. E., C. D. KNIGHTES, E. COOTER, AND R. L. DENNIS. Modeled Watershed Runoff Associated with Variations in Precipitation Data, with Implications for Contaminant Fluxes: Initial Results. In Proceedings, Planning for an Uncertain Future—Monitoring, Integration, and Adaptation. Third Interagency Conference on Research in the Watersheds, Estes Park, CO, September 08 - 11, 2008. United States Geological Survey, Denver, CO, 129-135, (2009).
KNIGHTES, C. D. Modeling Mercury in Streams: WASP Development. Presented at USGS/EPA Workshop on Mercury in Streams, Athens, GA, March 17 - 19, 2009.
GOLDEN, H. E. AND C. D. KNIGHTES. Simulated Response of Mercury and Nitrogen to Land Management and Land Use Change in a Large River Basin. Presented at 2009 American Geophysical Union Fall Meeting, San Francisco, CA, December 14 - 18, 2009.
2008
KNIGHTES, C. D. AND H. E. GOLDEN. Aquatic Ecosystem Exposure Associated with Atmospheric Mercury Deposition: Importance of Watershed and Water Body Hot Spots and Hot Moments. Presented at American Geophysical Union Fall Meeting, San Francisco, CA, December 15 - 19, 2008.
GOLDEN, H. E., C. D. KNIGHTES, E. COOTER, AND R. L. DENNIS. Modeled Watershed Runoff Associated with Variations in Precipitation Data with Implications for Contaminant Fluxes. Presented at Third Interagency Conference on Research in the Watersheds, Estes Park, CO, September 08 - 11, 2008.
GOLDEN, H. E. AND C. D. KNIGHTES. Modeling Watershed Mercury Response to Atmospheric Loadings: Response Time and Challenges. Presented at American Geophysical Union Fall Meeting, San Francisco, CA, December 15 - 19, 2008.
GOLDEN, H. E. AND C. D. KNIGHTES. Simulating Runoff from a Grid Based Mercury Model: Flow Comparisons. Presented at Computational Methods in Water Resources Conference, San Francisco, CA, July 06 - 10, 2008.
Selin, N. E., E. M. Sunderland, C. D. KNIGHTES, R. P. Mason, S. Paltsev, J. M. Reilly, AND R. G. Prinn. Source Attribution of Mercury Exposure for U.S. Seafood Consumers: Implications for Policy. Presented at American Geophysical Union Fall Meeting, San Francisco, CA, December 15 - 19, 2008.
KNIGHTES, C. D. THE IMPORTANCE OF CONCURRENT MONITORING AND MODELING FOR UNDERSTANDING MERCURY EXPOSURE IN THE ENVIRONMENT. Presented at National Water Quality Monitoring Conference, Atlantic City, NJ, May 18 - 22, 2008.
GOLDEN, H. E., C. D. KNIGHTES, AND E. W. BOYER. Watershed Nitrogen Modeling: Benefits of Diverse Approaches Using a Case Study from New York State. Presented at National Water Quality Monitoring Conference, Atlantic City, NJ, May 18 - 22, 2008.
2007
KNIGHTES, C. D., M. Meaburn, AND R. ARAUJO. Atmospheric Deposition of Mercury. EM: AIR AND WASTE MANAGEMENT ASSOCIATIONS MAGAZINE FOR ENVIRONMENTAL MANAGERS. Air & Waste Management Association, Pittsburgh, PA, , 26-30, (2007).
BROWN, S., L. SAITO, C. D. KNIGHTES, AND M. GUSTIN. CALIBRATION AND EVALUATION OF A MERCURY MODEL FOR A WESTERN STREAM AND CONSTRUCTED WETLAND. WATER, AIR, AND SOIL POLLUTION. Springer, New York, NY, 182(1-4):275-290, (2007).
KNIGHTES, C. D. AND R. B. AMBROSE. EVALUATING REGIONAL PREDICTIVE CAPACITY OF A PROCESS-BASED MERCURY EXPOSURE MODEL, REGIONAL-MERCURY CYCLING MODEL (R-MCM), APPLIED TO 91 VERMONT AND NEW HAMPSHIRE LAKES AND PONDS, USA. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY. Society of Environmental Toxicology and Chemistry, Pensacola, FL, 26(4):807-815, (2007).
MANGIS, D. R., C. D. KNIGHTES, AND D. A. VALLERO. HUMAN-ECOSYSTEM INTERACTIONS: THE CASE OF MERCURY. Presented at 17th Annual Conference of the International Society of Exposure Analysis, Durham, NC, October 14 - 18, 2007.
MANGIS, D. R., C. D. KNIGHTES, AND D. A. VALLERO. Human - Ecosystem Interactions: The Case of Mercury. Presented at 17th Annual Conference of the International Society of Exposure Analysis, Durham, NC, October 14 - 18, 2007.
BABENDREIER, J. E., L. S. MATOTT, J. Hameedi, R. L. DENNIS, C. D. KNIGHTES, R. MATHUR, Y. M. MOHAMOUD, J. M. JOHNSTON, C. C. WEST, G. F. LANIAK, N. GABER, P. PASCUAL, AND R. ARAUJO. Managing Multimedia Pollution for a Multimedia World. EM: AIR AND WASTE MANAGEMENT ASSOCIATIONS MAGAZINE FOR ENVIRONMENTAL MANAGERS. Air & Waste Management Association, Pittsburgh, PA, , 6-11, (2007).
AMBROSE, R. B., C. D. KNIGHTES, AND B. RASHLEIGH. TOXICS IN OUR RIVERS. Presented at Georgia River Network Conference 2007 "Ensuring a Clean Water Legacy", Milledgeville, GA, February 17, 2007.
2006
TSIROS, I. X., R. B. AMBROSE, AND C. D. KNIGHTES. CHALLENGES AND SUCCESSES MODELING THE INFLUENCES OF LAND USE CHANGES ON MERCURY DYNAMICS. Presented at Eighth International Conference on Mercury as a Global Pollutant, Madison, WI, August 06 - 11, 2006.
KNIGHTES, C. D. EVALUATING THE REGIONAL PREDICTIVE CAPACITY OF A PROCESS-BASED MERCURY EXPOSURE MODEL (R-MCM) FOR LAKES ACROSS VERMONT AND NEW HAMPSHIRE, USA. Presented at Society of Environmental Toxicology and Chemistry Annual Meeting, Montreal, QC, CANADA, November 05 - 09, 2006.
BROWN, S., L. SAITO, C. D. KNIGHTES, AND M. GUSTIN. MODELING MERCURY BEHAVIOR IN A CONTAMINATED DESERT STREAM AND CONSTRUCTED WETLAND. Presented at NWRA 2006 Conference, Mesquite, NV, February 21 - 23, 2006.
WOOL, T. A., R. B. AMBROSE, AND C. D. KNIGHTES. MODELING MERCURY DYNAMICS IN STREAM SYSTEMS WITH WASP7: CHARACTERIZING PROCESSES CONTROLLING SHORT AND LONG TERM RESPONSE. Presented at Eighth International Conference on Mercury as a Global Pollutant, Madison, WI, August 06 - 11, 2006.
KNIGHTES, C. D. AND C. A. PETERS. MULTISUBSTRATE BIODEGRADATION KINETICS FOR BINARY AND COMPLEX MIXTURES OF POLYCYCLIC AROMATIC HYDROCARBONS . ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY. Society of Environmental Toxicology and Chemistry, Pensacola, FL, 25(7):1746-1756, (2006).
KNIGHTES, C. D. OVERVIEW OF SESSION GOALS WITH EXAMPLES OF THE EVOLUTION OF MULTI-MEDIA MODELING FOR INFORMING REGULATORY DECISIONS AT THE U.S. ENVIRONMENTAL PROTECTION AGENCY. Presented at Eighth International Conference on Mercury as a Global Pollutant, Madison, WI, August 06 - 11, 2006.
2005
KNIGHTES, C. D. DEVELOPMENT AND APPLICATION OF A TOOL FOR EVALUATING WILDLIFE EXPOSURE RISK ASSOCIATED WITH MERCURY-CONTAMINATED SEDIMENTS. Presented at Society of Environmental Toxicology and Chemistry Annual Meeting, Baltimore, MD, November 13 - 17, 2005.
KNIGHTES, C. D. AND M. J. CYTERSKI. EVALUATING PREDICTIVE ERRORS OF A COMPLEX ENVIRONMENTAL MODEL USING A GENERAL LINEAR MODEL AND LEAST SQUARE MEANS. ECOLOGICAL MODELLING. Elsevier Science BV, Amsterdam, Netherlands, 186(3):366-374, (2005).
SUNDERLAND, E., C. D. KNIGHTES, R. B. AMBROSE, AND J. M. JOHNSTON. MODELING THE RESPONSE OF A VARIETY OF FRESHWATER ECOSYSTEMS TO CHANGES IN ATMOSPHERIC HG DEPOSITION ASSOCIATED WITH THE CLEAN AIR MERCURY RULE. Presented at Society of Environmental Toxicology and Chemistry Annual Meeting, Baltimore, MD, November 13 - 17, 2005.
JOHNSTON, J. M., D. HOFF, R. EDGAR, C. DUCHENEAUX, C. D. KNIGHTES, AND R. B. AMBROSE. THE USE OF LOCAL MERCURY DEPOSITION MEASUREMENTS IN MODELING THE FATE, TRANSPORT AND BIOACCUMULATION OF METHYLMERCURY ON THE CHEYENNE RIVER SIOUX TRIBAL LANDS. Presented at NADP 2005: Science Supporting Resource Management, Jackson, WY, September 27 - 30, 2005.
AMBROSE, R. B., J. M. JOHNSTON, C. D. KNIGHTES, AND E. SUNDERLAND. TYING IT ALL TOGETHER: EPA FIELD STUDIES AND MODELS USED IN THE CLEAN AIR MARKETS RULE. Presented at EPA Science Forum 2005, Washington, DC, May 16 - 18, 2005.
AMBROSE, R. B., T. A. WOOL, AND C. D. KNIGHTES. WASP TRANSPORT MODELING AND WASP ECOLOGICAL MODELING. Presented at NATO Programme Security Through Science, Dalyan, TURKEY, December 04 - 16, 2005.
2004
Knightes, C AND R B. Ambrose Jr. ANALYSIS OF MERCURY IN VERMONT AND NEW HAMPSHIRE LAKES: EVALUATION OF THE REGIONAL MERCURY CYCLING MODEL. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-04/080 (NTIS PB2005-101438), 2004.
Johnston, J M., D. Hoff, C Knightes, R B. Ambrose Jr., C. Ducheneaux, AND R. Hoogerheide. PROTECTING HUMAN HEALTH AND THE ENVIRONMENT ON SIOUX TRIBAL LANDS: A PARTNERSHIP OF EPA AND TRIBAL EPD. Presented at EPA Science Forum 2004, Washington, DC, June 1-3, 2004.
Johnston, J M., D. Hoff, C Knightes, R B. Ambrose Jr., C. Ducheneaux, AND R. Hoogerheide. PROTECTING HUMAN HEALTH AND THE ENVIRONMENT ON THE CHEYENNE SIOUX TRIBAL LANDS: A PARTNERSHIP OF EPA AND TRIBAL EPD. Presented at EPA Science Forum 2004, Washington, DC, June 1-3, 2004.
2003
Knightes, C AND R B. Ambrose Jr. MODELING MERCURY FATE IN VARIOUS WATER BODIES. Presented at Combustion Assistance Teleconference Series, Athens, GA, August 21, 2003.


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