Barbara J Mahler (Former Employee)
Science and Products
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Major and trace elements in 35 lake and reservoir sediment cores from across the United States, 1994-2001 Major and trace elements in 35 lake and reservoir sediment cores from across the United States, 1994-2001
This report presents data on major and trace element concentrations in sediment cores collected from 35 lakes and reservoirs during 1994-2001. The lakes and reservoirs are located in or near 18 major urban areas across the United States and provide a geographically diverse coverage of urban land use for the country as well as some reference settings. Vertical intervals of the cores were...
Authors
Peter C. Van Metre, Barbara Mahler, Jennifer T. Wilson, Edward Callender
Response to comment on “Parking lot sealcoat: An unrecognized source of urban polycyclic aromatic hydrocarbons” Response to comment on “Parking lot sealcoat: An unrecognized source of urban polycyclic aromatic hydrocarbons”
No abstract available.
Authors
Barbara Mahler, Peter C. Van Metre, Jennifer T. Wilson, T. J. Bashara, D. A. Johns
Effects of hurricanes Katrina and Rita on the chemistry of bottom sediments in Lake Pontchartrain, Louisiana, USA Effects of hurricanes Katrina and Rita on the chemistry of bottom sediments in Lake Pontchartrain, Louisiana, USA
The effects of Hurricanes Katrina and Rita and the subsequent unwatering of New Orleans, Louisiana, on the sediment chemistry of Lake Pontchartrain were evaluated by chemical analysis of samples of street mud and suspended and bottom sediments. The highest concentrations of urban-related elements and compounds (e.g., Pb, Zn, polycyclic aromatic hydrocarbons, and chlordane) in bottom...
Authors
P. C. Van Metre, A. J. Horowitz, B.J. Mahler, W.T. Foreman, C. C. Fuller, M.R. Burkhardt, K. A. Elrick, E. T. Furlong, S. C. Skrobialowski, J.J. Smith, J.T. Wilson, S.D. Zaugg
Concentrations, loads, and yields of particle-associated contaminants in urban creeks, Austin, Texas, 1999-2004 Concentrations, loads, and yields of particle-associated contaminants in urban creeks, Austin, Texas, 1999-2004
Concentrations, loads, and yields of particle-associated (hydrophobic) contaminants (PACs) in urban runoff in creeks in Austin, Texas, were characterized using an innovative approach: large-volume suspended-sediment sampling. This approach isolates suspended sediment from the water column in quantities sufficient for direct chemical analysis of PACs. During 1999-2004, samples were...
Authors
B.J. Mahler, P. C. Van Metre, J.T. Wilson, A.L. Guilfoyle, M.W. Sunvison
Trends in metals in urban and reference lake sediments across the United States, 1970 to 2001 Trends in metals in urban and reference lake sediments across the United States, 1970 to 2001
Trends in metals concentrations in sediment cores from 35 reservoirs and lakes in urban and reference settings were analyzed to determine the effects of three decades of legislation, regulation, and changing demographics and industrial practices in the United States on concentrations of metals in the environment. Decreasing trends outnumber increasing trends for all seven metals analyzed...
Authors
B.J. Mahler, P. C. Van Metre, E. Callender
Recent (2003-05) water quality of Barton Springs, Austin, Texas, with emphasis on factors affecting variability Recent (2003-05) water quality of Barton Springs, Austin, Texas, with emphasis on factors affecting variability
From 2003 to 2005, the U.S. Geological Survey, in cooperation with the Texas Commission on Environmental Quality, collected and analyzed water samples from the four springs (orifices) of Barton Springs in Austin, Texas (Upper, Main, Eliza, and Old Mill Springs), with the objective of characterizing water quality. Barton Springs is the major discharge point for the Barton Springs segment...
Authors
Barbara Mahler, Bradley D. Garner, MaryLynn Musgrove, Amber L. Guilfoyle, Mohan V. Rao
Science and Products
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Filter Total Items: 24
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Filter Total Items: 106
Major and trace elements in 35 lake and reservoir sediment cores from across the United States, 1994-2001 Major and trace elements in 35 lake and reservoir sediment cores from across the United States, 1994-2001
This report presents data on major and trace element concentrations in sediment cores collected from 35 lakes and reservoirs during 1994-2001. The lakes and reservoirs are located in or near 18 major urban areas across the United States and provide a geographically diverse coverage of urban land use for the country as well as some reference settings. Vertical intervals of the cores were...
Authors
Peter C. Van Metre, Barbara Mahler, Jennifer T. Wilson, Edward Callender
Response to comment on “Parking lot sealcoat: An unrecognized source of urban polycyclic aromatic hydrocarbons” Response to comment on “Parking lot sealcoat: An unrecognized source of urban polycyclic aromatic hydrocarbons”
No abstract available.
Authors
Barbara Mahler, Peter C. Van Metre, Jennifer T. Wilson, T. J. Bashara, D. A. Johns
Effects of hurricanes Katrina and Rita on the chemistry of bottom sediments in Lake Pontchartrain, Louisiana, USA Effects of hurricanes Katrina and Rita on the chemistry of bottom sediments in Lake Pontchartrain, Louisiana, USA
The effects of Hurricanes Katrina and Rita and the subsequent unwatering of New Orleans, Louisiana, on the sediment chemistry of Lake Pontchartrain were evaluated by chemical analysis of samples of street mud and suspended and bottom sediments. The highest concentrations of urban-related elements and compounds (e.g., Pb, Zn, polycyclic aromatic hydrocarbons, and chlordane) in bottom...
Authors
P. C. Van Metre, A. J. Horowitz, B.J. Mahler, W.T. Foreman, C. C. Fuller, M.R. Burkhardt, K. A. Elrick, E. T. Furlong, S. C. Skrobialowski, J.J. Smith, J.T. Wilson, S.D. Zaugg
Concentrations, loads, and yields of particle-associated contaminants in urban creeks, Austin, Texas, 1999-2004 Concentrations, loads, and yields of particle-associated contaminants in urban creeks, Austin, Texas, 1999-2004
Concentrations, loads, and yields of particle-associated (hydrophobic) contaminants (PACs) in urban runoff in creeks in Austin, Texas, were characterized using an innovative approach: large-volume suspended-sediment sampling. This approach isolates suspended sediment from the water column in quantities sufficient for direct chemical analysis of PACs. During 1999-2004, samples were...
Authors
B.J. Mahler, P. C. Van Metre, J.T. Wilson, A.L. Guilfoyle, M.W. Sunvison
Trends in metals in urban and reference lake sediments across the United States, 1970 to 2001 Trends in metals in urban and reference lake sediments across the United States, 1970 to 2001
Trends in metals concentrations in sediment cores from 35 reservoirs and lakes in urban and reference settings were analyzed to determine the effects of three decades of legislation, regulation, and changing demographics and industrial practices in the United States on concentrations of metals in the environment. Decreasing trends outnumber increasing trends for all seven metals analyzed...
Authors
B.J. Mahler, P. C. Van Metre, E. Callender
Recent (2003-05) water quality of Barton Springs, Austin, Texas, with emphasis on factors affecting variability Recent (2003-05) water quality of Barton Springs, Austin, Texas, with emphasis on factors affecting variability
From 2003 to 2005, the U.S. Geological Survey, in cooperation with the Texas Commission on Environmental Quality, collected and analyzed water samples from the four springs (orifices) of Barton Springs in Austin, Texas (Upper, Main, Eliza, and Old Mill Springs), with the objective of characterizing water quality. Barton Springs is the major discharge point for the Barton Springs segment...
Authors
Barbara Mahler, Bradley D. Garner, MaryLynn Musgrove, Amber L. Guilfoyle, Mohan V. Rao