Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Nathan W. Johnson"'
Publikováno v:
Journal of Geophysical Research: Biogeosciences. 127
Autor:
Daniel S. Jones, Edward B. Swain, Gabriel M. Walker, John Pastor, Nathan W. Johnson, Carl P. J. Mitchell, Jake V. Bailey
Publikováno v:
Environmental Science & Technology. 54:14265-14274
Methylmercury (MeHg) is a bioaccumulative neurotoxin produced by certain sulfate-reducing bacteria and other anaerobic microorganisms. Because microorganisms differ in their capacity to methylate mercury, the abundance and distribution of methylating
Autor:
Amber M. White, Joel C. Hoffman, Jeff D. Jeremiason, Bruce A. Monson, Craig Roesler, Dan Breneman, Kristofer R. Rolfhus, Roger J. Haro, Nathan W. Johnson
Publikováno v:
SSRN Electronic Journal.
Publikováno v:
Environmental sciencetechnology.
Passive sampling to quantify net partitioning of hydrophobic organic contaminants between the porewater and solid phase has advanced risk management for contaminated sediments. Direct porewater (Cfree) measures represent the best way to predict adver
Quantitative Dissolution of Environmentally Accessible Iron Residing in Iron-Rich Minerals: A Review
Publikováno v:
ACS Earth and Space Chemistry. 3:1371-1392
Classifying iron residing in iron-bearing minerals is an important process across numerous disciplines. Iron exists in many forms and with varying degrees of accessibility for reactions. A wide ran...
Autor:
Daniel S, Jones, Nathan W, Johnson, Carl P J, Mitchell, Gabriel M, Walker, Jake V, Bailey, John, Pastor, Edward B, Swain
Publikováno v:
Environmental sciencetechnology. 54(22)
Methylmercury (MeHg) is a bioaccumulative neurotoxin produced by certain sulfate-reducing bacteria and other anaerobic microorganisms. Because microorganisms differ in their capacity to methylate mercury, the abundance and distribution of methylating
Publikováno v:
Geological Society of America Abstracts with Programs.
Publikováno v:
Biogeochemistry. 141:95-106
Iron sulfide plaques have been observed on roots of wild rice (Zizania palustris) and other wetland plants grown in sulfur-impacted freshwater ecosystems, but the mechanism of their formation and ramifications for plants have not been investigated. W
Autor:
Nathan W. Johnson, Amanda A. Brennan
Publikováno v:
Integrated Environmental Assessment and Management. 14:212-223
The over- or underprediction of risk in moderately contaminated sediments can have a large impact on the nature of applied management strategies given that concentrations border on being toxic or not toxic. Project managers should give significant co
Publikováno v:
Journal of Geophysical Research: Biogeosciences. 122:2435-2457
Recent studies show sulfur redox processes in terrestrial settings are more important than previously considered, but much remains uncertain about how these processes respond to dynamic hydrologic conditions in natural field settings. We used field o