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Exposure Research

Records 1 to 67 of 67
2014
Burke, R., K. Fritz, C. Barton, B. Johnson, S. Fulton, D. Hardy, D. Word, AND J. Jack. Impacts of Mountaintop Removal and Valley Fill Coal Mining on C and N Processing in Terrestrial Soils and Headwater Streams. WATER, AIR, & SOIL POLLUTION. Springer, New York, NY, 225(8):225:2081, (2014).
2013
Johnson, B., K. Fritz, AND R. Price. Estimating benthic secondary production from aquatic insect emergence in streams affected by mountaintop removal coal mining, West Virginia USA. Fundamental and Applied Limnology. E. Schweizerbart'sche Verlagsbuchhandlung, Stuttgart, Germany, 182(3):191-204, (2013).
2012
FRITZ, K. M., B. R. JOHNSON, AND DAVID M. WALTERS. Characterization and classification of invertebrates as indicators of flow permanence in headwater streams. Presented at Society for Freshwater Science Annual Meeting, Louisville, KY, May 20 - 24, 2012.
JOHNSON, B. R., P. Weaver, K. Hammer, J. M. LAZORCHAK, AND D. Funk. Growth and survivorship of the mayfly Centroptilum triangulifer (Ephemeroptera: Baetidae) exposed to elevated specific conductance in flow-through mesocosms. Presented at Society for Freshwater Science Annual Meeting, Louisville, KY, May 20 - 24, 2012.
Entrekin, S., G. Adams, R. Adams, B. Austin, M. Evans-White, C. Gallipeau, E. Hagenbuch, B. Haggard, E. Inland, N. Jensen, B. R. JOHNSON, J. Kelso, L. Lewis, L. Massey, AND L. Stearman. Rapid gas development in the Fayetteville shale basin, Arkansas. Presented at Society for Freshwater Science, Louisville, KY, May 20 - 24, 2012.
2011
FRITZ, K. M., S. FULTON, B. R. JOHNSON, C. D. Barton, J. D. Jack, D. A. Word, AND R. A. BURKE. An Assessment of Cellulose Filters as a Standardized Material for Measuring Litter Breakdown in Headwater Streams . ECOHYDROLOGY. Wiley Interscience, Malden, MA, 4(3):469-476, (2011).
FRITZ, K. M., S. FULTON, B. R. JOHNSON, C. D. Barton, J. D. Jack, D. A. Word, AND R. A. BURKE. An assessment of cellulose filters as a standardized material for measuring litter breakdown in headwater streams. ECOHYDROLOGY. Wiley Interscience, Malden, MA, 4(3):469-476, (2011).
LAZORCHAK, J. M., P. C. Weaver, K. A. Hammer, B. R. JOHNSON, C. T. NIETCH, D. Funk, AND D. Buckwalter. Comparative sensitivity of centroptilum triangulifer, ceriodaphnia dubia and daphnia magna to standard salt and copper reference toxicants. Presented at SETAC, Boston, MA, November 13 - 17, 2011.
FRITZ, K. M. AND B. R. JOHNSON. Headwater streams - what are they and what do they do? Presented at Appalachian Stream Mitigation Workshop, Lexington, KY, April 11 - 15, 2011.
Entrekin, S., M. Evans-White, B. R. JOHNSON, AND E. Hagenbuch. Natural gas development in shale reservoirs poses a threat to the health of surface waters. FRONTIERS IN ECOLOGY AND THE ENVIRONMENT. Ecological Society of America, Ithaca, NY, 9(9):503-511, (2011).
2010
JOHNSON, B. R., K. M. FRITZ, R. Price, C. F. Maxwell, E. Benfield, AND J. R. Webster. Assessment of corn and banana leaves as potential standardized substrates for leaf decomposition in streams affected by mountaintop removal coal mining, West Virginia, USA. Presented at North American Benthological Society, Sante Fe, NM, June 06 - 11, 2010.
JOHNSON, B. R. Effects of mountaintop removal coal mining on structure and function of Appalachian headwater streams. Presented at UK Forestry Department Seminar, Lexington, KY, January 28, 2010.
FRITZ, K. M., B. R. JOHNSON, AND R. Price. Export of detritus and invertebrate from headwater streams: linking mountaintop removal and valley fill coal mining to downstream receiving waters. Presented at North American Benthological Society, Sante Fe, NM, June 06 - 11, 2010.
FRITZ, K. M., S. FULTON, B. R. JOHNSON, C. D. Barton, J. D. Jack, D. A. Word, AND R. A. BURKE. Structural and Functional Characteristics of Natural and Constructed Channels Draining a Reclaimed Mountaintop Removal and Valley Fill Coal Mine . JOURNAL OF THE NORTH AMERICAN BENTHOLOGICAL SOCIETY. North American Benthological Society, Lawrence, KS, 29(2):673-689, (2010).
FRITZ, K. M., S. FULTON, B. R. JOHNSON, C. D. Barton, J. D. Jack, D. A. Word, AND R. A. BURKE. Structural and functional characteristics of natural and constructed channels draining a reclaimed mountaintop removal and valley fill coal mine. JOURNAL OF THE NORTH AMERICAN BENTHOLOGICAL SOCIETY. North American Benthological Society, Lawrence, KS, 29(2):673-689, (2010).
JOHNSON, B. R., A. Haas, AND K. M. FRITZ. Use of spatially explicit physicochemical data to measure downstream impacts of headwater stream disturbance. WATER RESOURCES RESEARCH. American Geophysical Union, Washington, DC, 46:W09526, (2010).
2009
BLOCKSOM, K. A. AND B. R. JOHNSON. Development of a regional macroinvertebrate index for large river bioassessment. ECOLOGICAL INDICATORS. Elsevier Science Ltd, New York, NY, 9(2):313-328, (2009).
FRITZ, K. M., B. R. JOHNSON, M. PASSMORE, AND G. POND. Ecological consequences of elevated total dissolved solids associated with fossil fuel extraction in the United States. Presented at Thomas More College Ohio River Field Station Summer Seminar Series, California, KY, August 12, 2009.
COMPTON, J. E., R. L. DENNIS, H. A. WALKER, W. B. MILSTEAD, S. J. JORDAN, B. H. HILL, K. M. FRITZ, R. DEVEREUX, B. R. JOHNSON, J. BEAULIEU, J. S. LATIMER, J. Lynch, R. WAITE, AND C. Davis. Ecosystem Services Research Program, Pollutant Specific Studies: Nitrogen Regulations Services Implementation Plan. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-09/091, 2009.
JOHNSON, B. R., K. M. FRITZ, AND R. Price. Estimating benthic secondary production from aquatic insect emergence in streams affected by mountaintop removal coal mining, West Virginia, USA. Presented at North American Benthological Society, Grand Rapids, MI, May 17 - 22, 2009.
FRITZ, K. M., B. R. JOHNSON, AND R. Price. Hydrolytic activity and metabolism of sediment and epilithon in streams draining mountaintop removal coal mining, West Virginia, U.S.A. Presented at Southeastern Water Pollution Biologists Association 2009 Annual Meeting, Frankfort, KY, October 20 - 22, 2009.
JOHNSON, B. R., K. M. FRITZ, K. A. BLOCKSOM, AND DAVID M. WALTERS. Larval salamanders and channel geomorphology are indicators of hydrologic permanence in forested headwater streams. ECOLOGICAL INDICATORS. Elsevier Science Ltd, New York, NY, 9(1):150-159, (2009).
FRITZ, K. M., B. R. JOHNSON, AND R. Price. Sediment and epilithon metabolism and hydrolytic activity in streams affected by mountaintop removal coal mining, West Virginia, U.S.A. Presented at North American Benthological Society, 57 Annual Meeting, Grand Rapids, MI, May 17 - 22, 2009.
2008
RYBCZYNSKI, S., DAVID M. WALTERS, K. M. FRITZ, AND B. R. JOHNSON. Comparing trophic position of stream fishes using stable isotope and gut contents analyses. Ecology of Freshwater Fish. Blackwell Publishing, Malden, MA, 17(2):199-206, (2008).
JOHNSON, B. R., K. M. FRITZ, AND R. Price. Development of rapid methods for measuring stream ecosystem functions in the Appalachian coal mining region: preliminary results. Presented at West Virginia Coal Association, Charleston, WV, December 11, 2008.
BURKE, R. A., K. M. FRITZ, B. R. JOHNSON, S. FULTON, AND C. Barton. Impact of Mountaintop Mining/Valley Fill on the Stable Carbon Isotopic Composition and Concentration of Dissolved Organic Carbon and Dissolved Inorganic Carbon in Headwater Streams. Presented at 6th International Conference on Applications of Stable Isotope Techniques to Ecological Studies, Honolulu, HI, August 25 - 29, 2008.
FRITZ, K. M., B. R. JOHNSON, AND DAVID M. WALTERS. Physical indicators of hydrologic permanence in forested headwater streams. JOURNAL OF THE NORTH AMERICAN BENTHOLOGICAL SOCIETY. North American Benthological Society, Lawrence, KS, 27(3):690-704, (2008).
JOHNSON, B. R., K. M. FRITZ, AND R. Price. Regional methods program: Development of rapid measures of stream ecosystem functions in the Appalachian mining region. Presented at Biological Advisory Committee Annual Meeting, Fort Meade, MD, October 09 - 11, 2008.
BURKE, R. A., K. M. FRITZ, B. R. JOHNSON, S. FULTON, AND C. Barton. Relationship Between Watershed Land Use and Denitrification Enzyme Activity in Headwater Streams. Presented at Denitrification Research Coordination Network Workshop, Cambridge, MD, May 27 - 30, 2008.
2007
JOHNSON, B. R. AND K. A. BLOCKSOM. A COMPARISON OF BENTHIC MACROINVERTEBRATE SAMPLING METHODS ON SELECTED LARGE RIVER TRIBUTARIES TO THE MISSISSIPPI. Presented at SWIMS Conference , Chicago, IL, January 30 - February 01, 2007.
JOHNSON, B. R. AND K. A. BLOCKSOM. ASSESSMENT OF NONWADEABLE TRIBUTARIES TO THE OHIO AND MISSISSIPPI RIVERS USING THE MACROINVEREBRATE LARGE RIVER BIOASSESSMENT PROTOCOL (MLR-BP). Presented at Association of Mid-Atlantic Aquatic Biologists Annual Meeting, Berkeley Springs, WV, April 03 - 05, 2007.
BLOCKSOM, K. A. AND B. R. JOHNSON. DEVELOPMENT OF MACROINVERTEBRATE INDICATORS FOR NONWADEABLE TRIBUTARIES TO THE OHIO AND MISSISSIPPI RIVERS. Presented at SWIMS Conference, Chicago, IL, January 30 - February 01, 2007.
FRITZ, K. M., S. FULTON, B. R. JOHNSON, C. BARTON, J. JACK, D. WORD, AND R. A. BURKE. DO POST-MINING CONSTRUCTED CHANNELS REPLACE FUNCTIONAL ATTRIBUTES OF HEADWATER STREAMS? Presented at North American Benthological Society, Columbia, SC, June 03 - 07, 2007.
FRITZ, K. M., S. FULTON, B. R. JOHNSON, C. Barton, J. Jack, D. Word, AND R. A. BURKE. Do post-mining constructed channels replace functional characteristics of headwater streams? Presented at Mid-Atlantic Stream Restoration Conference, Cumberland, MD, November 07 - 08, 2007.
JOHNSON, B. R., A. HAAS, AND K. M. FRITZ. USE OF GEOSPATIAL DATA TO PREDICT DOWNSTREAM IMPACTS OF COAL MINING IN AN APPALACHIAN WATERSHED. Presented at North American Benthological Society, Columbia, SC, June 03 - 07, 2007.
JOHNSON, B. R., A. HAAS, AND K. M. FRITZ. USE OF GEOSPATIAL DATA TO PREDICT DOWNSTREAM IMPACTS OF COAL MINING IN AN APPALACHIAN WATESHED. Presented at Association of Mid-Atlantic Aquatic Biologists, Berkeley Springs, WV, April 04 - 05, 2007.
JOHNSON, B. R., A. HAAS, AND K. M. FRITZ. Use of geospatial data to predict downstream influence of coal mining in Appalachia. Presented at Mid-Atlantic Stream Restoration Conference, Cumberland, MD, November 07 - 08, 2007.
2006
RYBCZYNSKI, S., DAVID M. WALTERS, K. M. FRITZ, AND B. R. JOHNSON. CORRESPONDENCE OF STABLE ISOTOPE AND GUT CONTENTS ANALYSES IN DETERMINING TROPHIC POSITION OF STREAM FISHES. Presented at North American Benthological Society, Anchorage, AK, June 04 - 09, 2006.
FRITZ, K. M. AND B. R. JOHNSON. DEVELOPMENT OF RAPID FUNCTIONAL METHODS FOR HEADWATER STREAMS. Presented at Biological Advisory Committee Meeting, Seattle, WA, October 02 - 05, 2006.
BURKE, R. A., S. FULTON, K. M. FRITZ, B. R. JOHNSON, AND C. BARTON. EFFECTS OF MOUNTAINTOP MINING/VALLEY FILL (MTM/VF) ON FUNCTIONAL INDICATORS IN APPALACHIAN HEADWATER STREAMS. Presented at EPA Regional Science Workshop on Headwaters and Associated Wetlands in the Mid-Atlantic Highlands Region, Philadelphia, PA, June 20 - 21, 2006.
FRITZ, K. M., B. R. JOHNSON, AND DAVID M. WALTERS. FIELD OPERATIONS MANUAL FOR ASSESSING THE HYDROLOGIC PERMANENCE AND ECOLOGICAL CONDITION OF HEADWATER STREAMS. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-06/126 (NTIS PB2007-100972), 2006.
FRITZ, K. M. AND B. R. JOHNSON. INVERTEBRATE ASSEMBLAGES FROM HEADWATER STREAMS WITH DIFFERENT FLOW PERMANENCE. Presented at North American Benthological Society, Anchorage, AK, June 04 - 09, 2006.
JOHNSON, B. R., J. WALLACE, AND A. D. ROSEMOND. LARVAL SALAMANDER GROWTH RESPONDS TO ENRICHMENT OF A NUTRIENT POOR HEADWATER STREAM. HYDROBIOLOGIA. Springer, New York, NY, 573:227-232, (2006).
JOHNSON, B. R., K. A. BLOCKSOM, AND J. E. FLOTEMERSCH. MACROINVERTEBRATE ASSEMBLAGES OF THE ST. CROIX AND WISCONSIN RIVERS: AN INITIAL APPLICATION OF THE LARGE RIVER BIOASSESSMENT PROTOCOL (LR-BP) IN EPA REGION 5. Presented at Association of Mid-Atlantic Aquatic Biologists Workshop , Berkeley Springs, WV, March 22 - 24, 2006.
JOHNSON, B. R., K. A. BLOCKSOM, AND J. E. FLOTEMERSCH. MACROINVERTEBRATE ASSEMBLAGES OF THE ST. CROIX AND WISCONSIN RIVERS: AN INITIAL APPLICATION OF THE LARGE RIVER BIOASSESSMENT PROTOCOL (LR-BP) IN THE MIDWESTERN UNITED STATES. Presented at 2nd International Symposium on Ecology and Biodiversity in Large Rivers of Northeast Asia and Western North America, Harbin, CHINA, September 25 - 29, 2006.
JOHNSON, B. R., K. A. BLOCKSOM, AND J. E. FLOTEMERSCH. REGIONAL METHODS PROGRAM: DEVELOPMENT OF LARGE RIVER BIOASSESSMENT PROTOCOLS (LR-BP) FOR BENTHIC MACROINVERTEBRATES. Presented at Biological Advisory Committee Meeting, Seattle, WA, October 02 - 05, 2006.
WOOTEN, M. S., B. R. JOHNSON, AND E. B. EMERY. TEMPORAL VARIATION IN OHIO RIVER MACROINVERTEBRATES: A HISTORICAL ROCK BASKET COMPARISON (1965-1971 AND 2002). JOURNAL OF FRESHWATER ECOLOGY. Oikos Publishers Incorporated, La Crosse, WI, 21(4):561-574, (2006).
2005
WOOTEN, M., E. EMERY, B. R. JOHNSON, AND K. A. BLOCKSOM. A METHODS COMPARISON FOR COLLECTING MACROINVERTEBRATES IN THE OHIO RIVER. Presented at North American Benthological Society, New Orleans, LA, May 22 - 28, 2005.
JOHNSON, B. R. AND K. M. FRITZ. ARE SALAMANDERS USEFUL INDICATORS OF HYDROLOGIC PERMANENCE IN HEADWATER STREAMS? Presented at North American Benthological Society, New Orleans, LA, May 23 - 27, 2005.
BIALES, A. D., B. R. JOHNSON, J. E. FLOTEMERSCH, E. EMERY, AND J. M. LAZORCHAK. ASSESSING ENDOCRINE-DISRUPTING CHEMICAL EXPOSURE IN INDIGENOUS AQUATIC POPULATIONS IN THE OHIO RIVER. Presented at 2005 EPA Science Form, Washington, DC, May 16 - 18, 2005.
JOHNSON, B. R., E. EMERY, J. THOMAS, J. M. LAZORCHAK, J. E. FLOTEMERSCH, K. A. BLOCKSOM, AND C. YODER. BIOLOGICAL ASSESSMENT OF LARGE RIVERS IN THE U.S. ENVIRONMENTAL PROTECTION AGENCY REGION 5: AN INTER-AGENCY COLLABORATION. Presented at 2005 EPA Science Forum, Washington, DC, May 16 - 18, 2005.
WALTERS, DAVID M., K. M. FRITZ, B. R. JOHNSON, S. RYBCZYNSKI, AND J. M. LAZORCHAK. CARBON, CONTAMINANTS AND CREEKS: USING STABLE ISOTOPES AND PCBS TO TRACK ENERGY FLOW THROUGH STREAM FOODWEBS. Presented at University of Georgia Institute of Ecology, Athens, GA, November 04, 2005.
FLOTEMERSCH, J. E., K. A. BLOCKSOM, AND B. R. JOHNSON. DEVELOPMENT OF A LARGE RIVER BIOASSESSMENT PROTOCOL (LR-BP) FOR MACROINVERTEBRATES: PILOT RESULTS FROM MIDWESTERN RIVERS. Presented at Northwest Biological Assessment Workshop, Townsend, WA, November 02 - 04, 2005.
JOHNSON, B. R., K. A. BLOCKSOM, AND J. E. FLOTEMERSCH. DEVELOPMENT OF LARGE RIVER BIOASSESSMENT PROTOCOLS (LR-BP) FOR BENTHIC MACROINVERTEBRATES IN EPA REGION 5. Presented at Mid-Atlantic Aquatic Biologists Workshop, Berkeley Springs, WV, March 24 - 25, 2005.
FRITZ, K. M., B. R. JOHNSON, R. A. BURKE, P. J. WIGINGTON JR, B. H. HILL, C. T. NIETCH, AND R. J. BRUINS. ESTABLISHING THE IMPORTANCE OF HEADWATER STREAMS: CONCEPTS AND PRELIMINARY APPLICATIONS. Presented at Headwaters Workgroup, AWRA Meeting, Seattle, WA, November 09, 2005.
FRITZ, K. M., B. R. JOHNSON, AND D. M. WALTERS. FACTORS CONTROLLING HYDROLOGIC PERMANENCE OF HEADWATER STREAMS. Presented at North American Benthological Society, New Orleans, LA, May 23 - 27, 2005.
FRITZ, K. M., B. R. JOHNSON, AND DAVID M. WALTERS. FACTORS CONTROLLING THE HYDROLOGIC PERMANENCE OF HEADWATER STREAMS. Presented at Mid-Atlantic Aquatic Biologists Workshop, Berkeley Springs, WV, March 24 - 25, 2005.
FRITZ, K. M., B. R. JOHNSON, DAVID M. WALTERS, J. E. FLOTEMERSCH, M. PASSMORE, D. MCDONALD, J. KURTENBACH, E. HAMMER, G. HAYSLIP, AND L. HERGER. HEADWATER INTERMITTENT STREAMS STUDY: COLLABORATION ACROSS THE NATION. Presented at 2005 EPA Science Forum, Washington, DC, May 16 - 18, 2005.
FRITZ, K. M., B. R. JOHNSON, J. GREENWOOD, AND DAVID M. WALTERS. REGIONAL METHODS INITIATIVE: DEVELOPMENT OF BIOLOGICAL INDICATORS, METHODS AND ASSESSMENT TECHNIQUES IN FIRST ORDER AND INTERMITTENT STREAMS: HEADWATER INTERMITTENT STREAMS STUDY. Presented at SWIMS Conference, Chicago, IL, February 01 - 03, 2005.
JOHNSON, B. R., J. E. FLOTEMERSCH, AND K. A. BLOCKSOM. REGIONAL METHODS INITIATIVE: DEVELOPMENT OF LARGE RIVER BIOASSESSMENT PROTOCOLS (LRBP) FOR BENTHIC MACROINVERTEBRATES. Presented at SWIMS Conference, Chicago, IL, February 01 - 03, 2005.
LAZORCHAK, J. M., A. D. BIALES, B. R. JOHNSON, K. A. BLOCKSOM, J. E. FLOTEMERSCH, AND E. EMERY. USING GENOMIC INDICATORS IN AQUATIC ORGANISMS TO MANAGE STREAM POPULATIONS EXPOSED TO EMERGING CHEMICALS. Presented at Wright State University, Dayton, OH, April 22, 2005.
WALTERS, DAVID M., K. M. FRITZ, B. R. JOHNSON, AND J. M. LAZORCHAK. USING STABLE ISOTOPES TO TRACK BIOMAGNIFICATION OF POLYCHLORINATED BIPHENYLS (PCBS) THROUGH STREAM FOOD WEBS. Presented at North American Benthological Society, New Orleans, LA, May 22 - 28, 2005.
WALTERS, D., K. M. FRITZ, B. R. JOHNSON, AND J. M. LAZORCHAK. USING STABLE ISOTOPES TO TRACK BIOMAGNIFICATION OF POLYCHLORINATED BIPHENYLS (PCBS) THROUGH STREAM FOOD WEBS. Presented at SETAC, Baltimore, MD, November 13 - 17, 2005.
2004
Fritz, K M., B R. Johnson, D M. Walters, AND J E. Flotemersch. ASSESSING HEADWATER STREAMS: LINKING LANDSCAPES TO STREAM NETWORKS. Presented at Science Forum 2004, Washington, DC, June 1-3, 2004.
Fritz, K M., B R. Johnson, AND D M. Walters. HEADWATER INTERMITTENT STREAM WORKSHOP (NEAEB). Presented at New England Association of Environmental Biologists, Hancock, MA, March 17 - 19, 2004.
Wooten, M. S., E. B. Emery, AND B R. Johnson. TEMPORAL VARIATION IN OHIO RIVER MACROINVERTEBRATES: A HISTORICAL ROCK BASKET COMPARISON, 1960'S TO PRESENT. Presented at North American Benthological Society, Vancouver, Canada, June 6-10, 2004.


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