Assessing the potential for re-emission of mercury deposited in precipitation from arid soils using a stable isotope
J.A. Ericksen, M.S. Gustin, S.E. Lindberg, S.D. Olund, D. P. Krabbenhoft
2005, Environmental Science & Technology (39) 8001-8007
A solution containing 198Hg in the form of HgCl2 was added to a 4 m2 area of desert soils in Nevada, and soil Hg fluxes were measured using three dynamic flux chambers. There was an immediate release of 198Hg after it was applied, and then emissions decreased exponentially. Within the first...
Management scenarios for the Jordan River salinity crisis
E. Farber, A. Vengosh, I. Gavrieli, Amarisa Marie, T.D. Bullen, B. Mayer, R. Holtzman, M. Segal, U. Shavit
2005, Applied Geochemistry (20) 2138-2153
Recent geochemical and hydrological findings show that the water quality of the base flow of the Lower Jordan River, between the Sea of Galilee and the Dead Sea, is dependent upon the ratio between surface water flow and groundwater discharge. Using water quality data, mass-balance calculations, and actual flow-rate measurements,...
Does biofilm contribute to diel cycling of Zn in High Ore Creek, Montana?
J.M. Morris, D. A. Nimick, A.M. Farag, J.S. Meyer
2005, Biogeochemistry (76) 233-259
Concentrations of metals cycle daily in the water column of some mining-impacted streams in the Rocky Mountains of the western USA. We hypothesized that biofilm in High Ore Creek, Montana, USA, sorbs and releases Zn on a diel cycle, and this uptake-and-release cycle controls the total and dissolved (0.45-μm filtered)...
Effects of coal-bed methane discharge waters on the vegetation and soil ecosystem in Powder River Basin, Wyoming
M. Stearns, J.A. Tindall, G. Cronin, M.J. Friedel, E. Bergquist
2005, Water, Air, & Soil Pollution (168) 33-57
Coal-bed methane (CBM) co-produced discharge waters in the Powder River Basin of Wyoming, resulting from extraction of methane from coal seams, have become a priority for chemical, hydrological and biological research during the last few years. Soil and vegetation samples were taken from affected and reference sites (upland elevations...
The ecological - Societal underpinnings of Everglades restoration
Fred H. Sklar, M.J. Chimney, S. Newman, P. McCormick, D. Gawlik, S. Miao, C. McVoy, W. Said, J. Newman, C. Coronado, G. Crozier, M. Korvela, K. Rutchey
2005, Conference Paper, Frontiers in Ecology and the Environment
The biotic integrity of the Florida Everglades, a wetland of immense international importance, is threatened as a result of decades of human manipulation for drainage and development. Past management of the system only exacerbated the problems associated with nutrient enrichment and disruption of regional hydrology. The Comprehensive Everglades Restoration Plan...
Occurrence of antibiotics in water from 13 fish hatcheries, 2001-2003
J.E. Dietze, E.A. Scribner, M. T. Meyer, D.W. Kolpin
2005, International Journal of Environmental Analytical Chemistry (85) 1141-1152
A 2-year study of extensive and intensive fish hatcheries was conducted to assess the general temporal occurrence of antibiotics in aquaculture. Antibiotics were detected in 15% of the water samples collected during the 2001-2002 collection period and in 31% of the samples during the 2003 collection period. Antibiotics were detected...
Herbicide and degradate flux in the Yazoo River Basin
R.H. Coupe, H.L. Welch, A.B. Pell, E.M. Thurman
2005, International Journal of Environmental Analytical Chemistry (85) 1127-1140
During 1996-1997, water samples were collected from five sites in the Yazoo River Basin and analysed for 14 herbicides and nine degradates. These included acetochlor, alachlor, atrazine, cyanazine, fluometuron, metolachlor, metribuzin, molinate, norflurazon, prometryn, propanil, propazine, simazine, trifluralin, three degradates of fluometuron, two degradates of atrazine,...
Perchlorate isotope forensics
J.K. Böhlke, N.C. Sturchio, B. Gu, J. Horita, G.M. Brown, W.A. Jackson, J. Batista, P.B. Hatzinger
2005, Analytical Chemistry (77) 7838-7842
Perchlorate has been detected recently in a variety of soils, waters, plants, and food products at levels that may be detrimental to human health. These discoveries have generated considerable interest in perchlorate source identification. In this study, comprehensive stable isotope analyses (37Cl/35Cl and 18O/17O/16O) of perchlorate from known synthetic and natural...
Urbanization effects on stream habitat characteristics in Boston, Massachusetts; Birmingham, Alabama; and Salt Lake City, Utah
T.M. Short, E.M.P. Giddings, H. Zappia, J.F. Coles
2005, Book chapter, Effects of Urbanization on Stream Ecosystems
Relations between stream habitat and urban land-use intensity were examined in 90 stream reaches located in or near the metropolitan areas of Salt Lake City, Utah (SLC); Birmingham, Alabama (BIR); and Boston, Massachusetts (BOS). Urban intensity was based on a multi-metric index (urban intensity index or UII) that included measures...
Status and conservation of the fish fauna of the Alabama River system
Mary C. Freeman, E.R. Irwin, N.M. Burkhead, B. J. Freeman, H.L. Bart Jr.
2005, American Fisheries Society Symposium (2005) 557-585
The Alabama River system, comprising the Alabama, Coosa, and Tallapoosa subsystems, forms the eastern portion of the Mobile River drainage. Physiographic diversity and geologic history have fostered development in the Alabama River system of globally significant levels of aquatic faunal diversity and endemism. At least 184 fishes are native to...
Monitored natural attenuation and enhanced attenuation for chlorinated solvent plumes - It's all about balance
K.A. Adams, K.M. Vangelas, B.B. Looney, F. Chapelle, T. Early, T. Gilmore, C.H. Sink
2005, Conference Paper, World Water Congress 2005: Impacts of global climate change - Proceedings of the 2005 World Water and Environmental Resources Congress
Nature's inherent ability to cleanse itself is at the heart of Monitored Natural Attenuation (MNA). The complexity comes when one attempts to measure and calculate this inherent ability, called the Natural Attenuation Capacity (NAC), and determine if it is sufficient to cleanse the system to agreed upon criteria. An approach...
Use of tracers and isotopes to evaluate vulnerability of water in domestic wells to septic waste
Ingrid M. Verstraeten, G.S. Fetterman, M.J. Meyer, T. Bullen, S.K. Sebree
2005, Ground Water Monitoring and Remediation (25) 107-117
In Nebraska, a large number (>200) of shallow sand‐point and cased wells completed in coarse alluvial sediments along rivers and lakes still are used to obtain drinking water for human consumption, even though construction of sand‐point wells for consumptive uses has been banned since 1987. The...
Use of individualistic streamflow-vegetation relations along the Fremont River, Utah, USA to assess impacts of flow alteration on wetland and riparian area
G.T. Auble, M. L. Scott, Jonathan M. Friedman
2005, Wetlands (25) 143-154
We analyzed the transverse pattern of vegetation along a reach of the Fremont River in Capitol Reef National Park, Utah, USA using models that support both delineation of wetland extent and projection of the changes in wetland area resulting from upstream hydrologic alteration. We linked stage-discharge relations developed by a...
Rainfall-runoff in the Albuquerque, New Mexico, area: Measurements, analyses and comparisons
C.E. Anderson, T.J. Ward, T. Kelly
Moglen G.E., editor(s)
2005, Conference Paper, Proceedings of the 2005 Watershed Management Conference - Managing Watersheds for Human and Natural Impacts: Engineering, Ecological, and Economic Challenges
Albuquerque, New Mexico, has experienced significant growth over the last 20 years like many other cities in the Southwestern United States. While the US population grew by 37% between the 1970 and 2000 censuses, the growth for Albuquerque was 83%. More people mean more development and increased problems of managing...
Data collection and documentation of flooding downstream of a dam failure in Mississippi
K. Van Wilson Jr.
Moglen G.E., editor(s)
2005, Conference Paper, Proceedings of the 2005 Watershed Management Conference - Managing Watersheds for Human and Natural Impacts: Engineering, Ecological, and Economic Challenges
On March 12, 2004, the Big Bay Lake dam failed, releasing water and affecting lives and property downstream in southern Mississippi. The dam is located near Purvis, Mississippi, on Bay Creek, which flows into Lower Little Creek about 1.9 miles downstream from the dam. Lower Little Creek flows into Pearl...
Nonlinear dynamics in ecosystem response to climatic change: Case studies and policy implications
Virginia R. Burkett, Douglas A. Wilcox, Robert Stottlemyer, Wylie Barrow, Dan Fagre, Jill Baron, Jeff Price, Jennifer L. Nielsen, Craig D. Allen, David L. Peterson, Greg Ruggerone, Thomas Doyle
2005, Ecological Complexity (2) 357-394
Many biological, hydrological, and geological processes are interactively linked in ecosystems. These ecological phenomena normally vary within bounded ranges, but rapid, nonlinear changes to markedly different conditions can be triggered by even small differences if threshold values are exceeded. Intrinsic and extrinsic ecological thresholds can lead to effects that cascade...
Hydrogeomorphic classification for Great Lakes coastal wetlands
Dennis A. Albert, Douglas A. Wilcox, Joel W. Ingram, Todd A. Thompson
2005, Journal of Great Lakes Research (31) 129-146
A hydrogeomorphic classification scheme for Great Lakes coastal wetlands is presented. The classification is hierarchical and first divides the wetlands into three broad hydrogeomorphic systems, lacustrine, riverine, and barrier-protected, each with unique hydrologic flow characteristics and residence time. These systems are further subdivided into finer geomorphic types based on physical...
Amphibian Research and Monitoring Initiative (ARMI): A successful start to a national program in the United States
Erin Muths, Robin E. Jung, Larissa L. Bailey, M. J. Adams, P. Stephen Corn, C. Kenneth Dodd Jr., Gary M. Fellers, Walter J. Sadinski, Cecil R. Schwalbe, Susan C. Walls, Robert N. Fisher, Alisa L. Gallant, William A. Battaglin, D. Earl Green
2005, Applied Herpetology (2) 355-371
Most research to assess amphibian declines has focused on local-scale projects on one or a few species. The Amphibian Research and Monitoring Initiative (ARMI) is a national program in the United States mandated by congressional directive and implemented by the U.S. Department of the Interior (specifically the U.S. Geological Survey,...
Control of Tamarix in the western United States: Implications for water salvage, wildlife use, and riparian restoration
P.B. Shafroth, J.R. Cleverly, T.L. Dudley, J.P. Taylor, Charles van Riper III, E.P. Weeks, J.N. Stuart
2005, Environmental Management (35) 231-246
Non-native shrub species in the genus Tamarix (saltcedar, tamarisk) have colonized hundreds of thousands of hectares of floodplains, reservoir margins, and other wetlands in western North America. Many resource managers seek to reduce saltcedar abundance and control its spread to increase the flow of water in streams that...
Discoloration of polyvinyl chloride (PVC) tape as a proxy for water-table depth in peatlands: validation and assessment of seasonal variability
Robert K. Booth, Sara C. Hotchkiss, Douglas A. Wilcox
2005, Functional Ecology (19) 1040-1047
Summary: 1. Discoloration of polyvinyl chloride (PVC) tape has been used in peatland ecological and hydrological studies as an inexpensive way to monitor changes in water-table depth and reducing conditions. 2. We investigated the relationship between depth of PVC tape discoloration and measured water-table depth at monthly time steps during...
Monitoring temporal change in riparian vegetation of Great Basin National Park
Erik A. Beever, David A. Pyke, Jeanne C. Chambers, Fred Landau, S.D. Smith
2005, Western North American Naturalist (65) 382-402
Disturbance in riparian areas of semiarid ecosystems involves complex interactions of pulsed hydrologic flows, herbivory, fire, climatic effects, and anthropogenic influences. We resampled riparian vegetation within ten 10-m × 100-m plots that were initially sampled in 1992 in 4 watersheds of the Snake Range, east central Nevada. Our finding of...
Provenance and diagenesis of the evaporite-bearing Burns formation, Meridiani Planum, Mars
S. M. McLennan, J.F. Bell III, W. M. Calvin, P. R. Christensen, B. C. Clark, P.A. de Souza, J. Farmer, W. H. Farrand, D.A. Fike, Ralf Gellert, A. Ghosh, T.D. Glotch, J.P. Grotzinger, B. Hahn, Kenneth E. Herkenhoff, J.A. Hurowitz, J. R. Johnson, S.S. Johnson, B. Jolliff, G. Klingelhofer, A.H. Knoll, Z. Learner, M. C. Malin, H.Y. McSween Jr., J. Pocock, S. W. Ruff, Laurence A. Soderblom, S. W. Squyres, N.J. Tosca, W.A. Watters, M.B. Wyatt, A. Yen
2005, Earth and Planetary Science Letters (240) 95-121
Impure reworked evaporitic sandstones, preserved on Meridiani Planum, Mars, are mixtures of roughly equal amounts of altered siliciclastic debris, of basaltic provenance (40 ± 10% by mass), and chemical constituents, dominated by evaporitic minerals (jarosite, Mg-, Ca-sulfates ± chlorides ± Fe-, Na-sulfates), hematite and possibly secondary silica (60 ± 10%). These chemical constituents and their relative abundances are...
Snow-fed streamflow timing at different basin scales: Case study of the Tuolumne River above Hetch Hetchy, Yosemite, California
J.D. Lundquist, M. D. Dettinger, D.R. Cayan
2005, Water Resources Research (41) 1-14
Diurnal cycles in snow‐fed streams provide a useful technique for measuring the time it takes water to travel from the top of the snowpack, where snowmelt typically peaks in the afternoon, to the river gauge, where the daily maximum flows may arrive many hours later. Hourly stage measurements in nested...
How snowpack heterogeneity affects diurnal streamflow timing
J.D. Lundquist, M. D. Dettinger
2005, Water Resources Research (41) 1-14
Diurnal cycles of streamflow in snow‐fed rivers can be used to infer the average time a water parcel spends in transit from the top of the snowpack to a stream gauge in the river channel. This travel time, which is measured as the difference between the hour of peak snowmelt...
Sources of variability of evapotranspiration in California
H.G. Hidalgo, D.R. Cayan, M. D. Dettinger
2005, Journal of Hydrometeorology (6) 3-19
The variability (1990–2002) of potential evapotranspiration estimates (ETo) and related meteorological variables from a set of stations from the California Irrigation Management System (CIMIS) is studied. Data from the National Climatic Data Center (NCDC) and from the Department of Energy from 1950 to 2001 were used to...
