Barbara C Scudder Eikenberry
Barbara Scudder Eikenberry is a Scientist Emerita, previous Hydrologist with the USGS, where she had worked since 1981.
Her expertise is in water quality assessment using freshwater organisms, with emphasis on chemical bioaccumulation and toxicity, also community ecology of algae, invertebrates, and fish. She has a B.A. in Aquatic Biology (1979, University of CA-Santa Barbara) and a M.S. in Marine Science (1984, CA State University, Hayward at Moss Landing Marine Labs). From 1991 to 2012, she was lead biologist for the Western Lake Michigan Drainages study unit of the USGS NAWQA Program. Since 2004, she has led ecological studies for the Milwaukee Corridor Study. She is currently leading benthos and plankton studies in rivermouths and harbors along the Lake Michigan coastline for decision-making input re Beneficial Use Impairments (BUIs) at Great Lakes Areas of Concern.
Focus: Water-quality assessments using stream organisms, with an emphasis on bioaccumulation, toxicity, and community ecology of benthic algae and invertebrates and fish.
Science and Products
Mercury cycling in stream ecosystems. 3. Trophic dynamics and methylmercury bioaccumulation
Procedures for Collecting and Processing Aquatic Invertebrates and Fish for Analysis of Mercury as Part of the National Water-Quality Assessment Program
Total Mercury, Methylmercury, and Carbon and Nitrogen Stable Isotope Data for Biota from Selected Streams in Oregon, Wisconsin, and Florida, 2002-04
Water-quality characteristics for selected sites within the Milwaukee Metropolitan Sewerage District planning area, Wisconsin, February 2004-September 2005
Mercury accumulation in periphyton of eight river ecosystems
Bioaccumulation of mercury in riverine periphyton
Physical, chemical, and biological responses to urbanization in the Fox and Des Plaines River basins of northeastern Illinois and southeastern Wisconsin
Water quality in the upper Illinois River basin: Illinois, Indiana, and Wisconsin, 1999-2001
Benthic algae of benchmark streams in agricultural areas of eastern Wisconsin
Effects of multi-scale environmental characteristics on agricultural stream biota in eastern Wisconsin
Physical, Chemical, and Biological Methods and Data from the Urban Land-Use-Gradient Study, Des Plaines and Fox River Basins, Illinois, 1999-2001
Characteristics of water, sediment, and benthic communities of the Wolf River, Menominee Indian Reservation, Wisconsin, water years 1986-98
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Mercury cycling in stream ecosystems. 3. Trophic dynamics and methylmercury bioaccumulation
Trophic dynamics (community composition and feeding relationships) have been identified as important drivers of methylmercury (MeHg) bioaccumulation in lakes, reservoirs, and marine ecosystems. The relative importance of trophic dynamics and geochemical controls on MeHg bioaccumulation in streams, however, remains poorly characterized. MeHg bioaccumulation was evaluated in eight stream ecosystemsAuthorsL.C. Chasar, B. C. Scudder, A.R. Stewart, A.H. Bell, G. R. AikenProcedures for Collecting and Processing Aquatic Invertebrates and Fish for Analysis of Mercury as Part of the National Water-Quality Assessment Program
Mercury studies conducted as part of the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program have included nationwide reconnaissance samplings of hundreds of stream sites, as well as detailed, process-oriented research at selected sites. These reconnaissance and detailed studies are intended to provide a better understanding of methylmercury bioaccumulation in stream ecosystAuthorsBarbara C. Scudder, Lia C. Chasar, L. Rod DeWeese, Mark E. Brigham, Dennis A. Wentz, William G. BrumbaughTotal Mercury, Methylmercury, and Carbon and Nitrogen Stable Isotope Data for Biota from Selected Streams in Oregon, Wisconsin, and Florida, 2002-04
The U.S. Geological Survey National Water-Quality Assessment Program conducted a multidisciplinary study to investigate the bioaccumulation of mercury from 2002 to 2004. Study areas were located in Oregon, Wisconsin, and Florida. Each study area included one urban site, and one or two nonurban sites that had the following attributes: high-percent wetland or low-percent wetland. Periphyton, macroinAuthorsLia C. Chasar, Barbara C. Scudder, Amanda H. Bell, Dennis A. Wentz, Mark E. BrighamWater-quality characteristics for selected sites within the Milwaukee Metropolitan Sewerage District planning area, Wisconsin, February 2004-September 2005
The Milwaukee Metropolitan Sewerage District (MMSD) Corridor Study is a three-phase project designed to improve the understanding of water resources in the MMSD planning area to assist managers and policy makers in their decisions. Phase I of the Study involved the compilation of existing data from multiple agencies into a single database. These data were analyzed to identify spatial, temporal, anAuthorsJudith C. Thomas, Michelle A. Lutz, Jennifer L. Bruce, David J. Graczyk, Kevin D. Richards, David P. Krabbenhoft, Stephen M. Westenbroek, Barbara C. Scudder, Daniel J. Sullivan, Amanda H. BellMercury accumulation in periphyton of eight river ecosystems
In 2003, the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) program and U.S. Environmental Protection Agency studied total mercury (THg) and methylmercury (MeHg) concentrations in periphyton at eight rivers in the United States in coordination with a larger USGS study on mercury cycling in rivers. Periphyton samples were collected using trace element clean techniques and NAuthorsA.H. Bell, B. C. ScudderBioaccumulation of mercury in riverine periphyton
No abstract available.AuthorsAmanda H. Bell, Barbara C. ScudderPhysical, chemical, and biological responses to urbanization in the Fox and Des Plaines River basins of northeastern Illinois and southeastern Wisconsin
No abstract available.AuthorsMitchell A. Harris, Barbara C. Scudder, Faith A. Fitzpatrick, Terri ArnoldWater quality in the upper Illinois River basin: Illinois, Indiana, and Wisconsin, 1999-2001
This report contains the major findings of a 1999?2001 assessment of water quality in the upper Illinois River Basin. It is one of a series of reports by the National Water-Quality Assessment (NAWQA) Program that present major findings in 51 major river basins and aquifer systems across the Nation. In these reports, water quality is discussed in terms of local, State, and regional issues.AuthorsGeorge E. Groschen, Terri Arnold, Mitchell A. Harris, David H. Dupre, Faith A. Fitzpatrick, Barbara C. Scudder, William S. Morrow, Paul J. Terrio, Kelly L. Warner, Elizabeth A. MurphyBenthic algae of benchmark streams in agricultural areas of eastern Wisconsin
Benthic algae were collected from 20 streams in the Western Lake Michigan Drainages by the U.S. Geological Survey in May and June of 1993 as part of the National Water-Quality Assessment program. These streams were selected to represent "benchmark" streams that were minimally affected by human activities, especially agriculture, for comparison to other streams in similar environmental settings. StAuthorsBarbara C. Scudder, Jana S. StewartEffects of multi-scale environmental characteristics on agricultural stream biota in eastern Wisconsin
The U.S. Geological Survey examined 25 agricultural streams in eastern Wisconsin to determine relations between fish, invertebrate, and algal metrics and multiple spatial scales of land cover, geologic setting, hydrologic, aquatic habitat, and water chemistry data. Spearman correlation and redundancy analyses were used to examine relations among biotic metrics and environmental characteristics. RiAuthorsF. A. Fitzpatrick, B. C. Scudder, B. N. Lenz, D. J. SullivanPhysical, Chemical, and Biological Methods and Data from the Urban Land-Use-Gradient Study, Des Plaines and Fox River Basins, Illinois, 1999-2001
Physical, chemical, and biological data were collected at 46 sites in the Fox and Des Plaines River Basins as part of the upper Illinois River Basin study of the U.S. Geological Survey?s National Water-Quality Assessment Program. The data, collected from 1999 to 2001, will be used to determine the effects of urbanization on streams in the Chicago, Illinois, metropolitan area. To examine the possibAuthorsDebbie L. Adolphson, Terri Arnold, Faith A. Fitzpatrick, Mitchell A. Harris, Kevin D. Richards, Barbara C. Scudder, Jana S. StewartCharacteristics of water, sediment, and benthic communities of the Wolf River, Menominee Indian Reservation, Wisconsin, water years 1986-98
Analyses and interpretation of water quality, sediment, and biological data from water years 1986 through 1998 indicated that land use and other human activities have had only minimal effects on water quality in the Wolf River upstream from and within the Menominee Indian Reservation in northeastern Wisconsin. Relatively high concentrations of calcium and magnesium (natural hardness), iron, manganAuthorsHerbert S. Garn, Barbara C. Scudder, Kevin D. Richards, Daniel J. Sullivan