Deficit irrigation of a landscape halophyte for reuse of saline waste water in a desert city
E. P. Glenn, C. Mckeon, V. Gerhart, P.L. Nagler, F. Jordan, J. Artiola
2009, Landscape and Urban Planning (89) 57-64
Saline waste waters from industrial and water treatment processes are an under-utilized resource in desert urban environments. Management practices to safely use these water sources are still in development. We used a deeprooted native halophyte, Atriplex lentiformis (quailbush), to absorb mildly saline effluent (1800 mg l-1 total dissolved solids, mainly...
Thallium isotope evidence for a permanent increase in marine organic carbon export in the early Eocene
S.G. Nielsen, S. Mar-Gerrison, A. Gannoun, D. LaRowe, V. Klemm, A. N. Halliday, K.W. Burton, J.R. Hein
2009, Earth and Planetary Science Letters (278) 297-307
The first high resolution thallium (Tl) isotope records in two ferromanganese crusts (Fe-Mn crusts), CD29 and D11 from the Pacific Ocean are presented. The crusts record pronounced but systematic changes in 205Tl/203Tl that are unlikely to reflect diagenetic overprinting or changes in isotope fractionation between seawater and Fe-Mn crusts. It...
Spatial and temporal diet segregation in northern fulmars Fulmarus glacialis breeding in Alaska: Insights from fatty acid signatures
S.W. Wang, S.J. Iverson, A.M. Springer, Scott A. Hatch
2009, Marine Ecology Progress Series (377) 299-307
Northern fulmars Fulmarus glacialis in the North Pacific Ocean are opportunistic, generalist predators, yet their diets are poorly described; thus, relationships of fulmars to supporting food webs, their utility as indicators of variability in forage fish abundances, and their sensitivity to ecosystem change are not known. We employed fatty acid (FA) signature...
Lagrangian sampling for emerging contaminants through an urban stream corridor in Colorado
J.B. Brown, W.A. Battaglin, R.E. Zuellig
2009, Journal of the American Water Resources Association (45) 68-82
Recent national concerns regarding the environmental occurrence of emerging contaminants (ECs) have catalyzed a series of recent studies. Many ECs are released into the environment through discharges from wastewater treatment plants (WWTPs) and other sources. In 2005, the U.S. Geological Survey and the City of Longmont initiated an investigation of...
The Mono Arch, eastern Sierra region, California: Dynamic topography associated with upper-mantle upwelling?
A. S. Jayko
2009, International Geology Review (51) 702-722
A broad, topographic flexure localized east of and over the central and southern Sierra Nevada, herein named the Mono Arch, apparently represents crustal response to lithospheric and/or upper-mantle processes, probably dominated by mantle upwelling within the continental interior associated Pacific-North American plate-boundary deformation. This zone of flexure is identified through...
Geochemistry and petrology of selected coal samples from Sumatra, Kalimantan, Sulawesi, and Papua, Indonesia
H. E. Belkin, S.J. Tewalt, J.C. Hower, J.D. Stucker, J.M.K. O’Keefe
2009, International Journal of Coal Geology (77) 260-268
Indonesia has become the world's largest exporter of thermal coal and is a major supplier to the Asian coal market, particularly as the People's Republic of China is now (2007) and perhaps may remain a net importer of coal. Indonesia has had a long history of coal production, mainly in...
Assessing rates of forest change and fragmentation in Alabama, USA, using the vegetation change tracker model
Mingshi Li, Chengquan Huang, Zhiliang Zhu, Hua Shi, Heng Lu, Shikui Peng
2009, Forest Ecology and Management (257) 1480-1488
Forest change is of great concern for land use decision makers and conservation communities. Quantitative and spatial forest change information is critical for addressing many pressing issues, including global climate change, carbon budgets, and sustainability. In this study, our analysis focuses on the differences in geospatial patterns and their changes...
Spatial-temporal patterns in Mediterranean carnivore road casualties: Consequences for mitigation
C. Grilo, J.A. Bissonette, M. Santos-Reis
2009, Biological Conservation (142) 301-313
Many carnivores have been seriously impacted by the expansion of transportation systems and networks; however we know little about carnivore response to the extent and magnitude of road mortality, or which age classes may be disproportionately impacted. Recent research has demonstrated that wildlife-vehicle-collisions (WVC) involving carnivores are modulated by temporal...
Hydraulic anisotropy characterization of pneumatic-fractured sediments using azimuthal self potential gradient
D.N. Wishart, L.D. Slater, D.L. Schnell, G.C. Herman
2009, Journal of Contaminant Hydrology (103) 134-144
The pneumatic fracturing technique is used to enhance the permeability and porosity of tight unconsolidated soils (e.g. clays), thereby improving the effectiveness of remediation treatments. Azimuthal self potential gradient (ASPG) surveys were performed on a compacted, unconsolidated clay block in order to evaluate their potential to delineate contaminant migration pathways...
Hemlock ecosystem monitoring of New River Gorge National River and Gauley River National Recreation Area vegetation and bird communities: 1998–2008
John M. Wood, Petra Bohall Wood, John Perez
2009, Natural Resource Report NPS/NER/NRR—2009/019
We initiated a long-term hemlock ecosystem monitoring study in 1998 on the New River Gorge National River (NERI) and Gauley River National Recreation Area (GARI), in Nicholas, Fayette, and Raleigh counties, West Virginia, to quantify the effects of hemlock woolly adelgid (HWA) on forest ecosystem dynamics. Hemlock vigor and degree...
CO2 storage resources, reserves, and reserve growth: Toward a methodology for integrated assessment of the storage capacity of oil and gas reservoirs and saline formations
Robert Burruss
2009, Energy Procedia (1) 2679-2683
Geologically based methodologies to assess the possible volumes of subsurface CO2 storage must apply clear and uniform definitions of resource and reserve concepts to each assessment unit (AU). Application of the current state of knowledge of geologic, hydrologic, geochemical, and geophysical parameters (contingencies) that control storage volume and injectivity allows definition...
Concentrations of cadmium, Cobalt, Lead, Nickel, and Zinc in Blood and Fillets of Northern Hog Sucker (Hypentelium nigricans) from streams contaminated by lead-Zinc mining: Implications for monitoring
C. J. Schmitt, W. G. Brumbaugh, T.W. May
2009, Archives of Environmental Contamination and Toxicology (56) 509-524
Lead (Pb) and other metals can accumulate in northern hog sucker (Hypentelium nigricans) and other suckers (Catostomidae), which are harvested in large numbers from Ozark streams by recreational fishers. Suckers are also important in the diets of piscivorous wildlife and fishes. Suckers from streams contaminated by historic Pb-zinc (Zn) mining...
Late Proterozoic-Paleozoic evolution of the Arctic Alaska-Chukotka terrane based on U-Pb igneous and detrital zircon ages: Implications for Neoproterozoic paleogeographic reconstructions
J.M. Amato, J. Toro, E. L. Miller, G. E. Gehrels, G. L. Farmer, E.S. Gottlieb, A.B. Till
2009, Geological Society of America Bulletin (121) 1219-1235
The Seward Peninsula of northwestern Alaska is part of the Arctic Alaska-Chukotka terrane, a crustal fragment exotic to western Laurentia with an uncertain origin and pre-Mesozoic evolution. U-Pb zircon geochronology on deformed igneous rocks reveals a previously unknown intermediate-felsic volcanic event at 870 Ma, coeval with rift-related magmatism associated with...
Modeling hazardous mass flows Geoflows09: Mathematical and computational aspects of modeling hazardous geophysical mass flows; Seattle, Washington, 9–11 March 2009
Richard M. Iverson, Randall J. LeVeque
2009, Eos, Earth and Space Science News (90) 201-201
A recent workshop at the University of Washington focused on mathematical and computational aspects of modeling the dynamics of dense, gravity-driven mass movements such as rock avalanches and debris flows. About 30 participants came from seven countries and brought diverse backgrounds in geophysics; geology; physics; applied and computational mathematics; and...
PCBs and DDE in tree swallow (Tachycineta bicolor) eggs and nestlings from an estuarine PCB superfund site, New Bedford Harbor, MA, U.S.A.
Saro Jayaraman, Diane E. Nacci, Denise M. Champlin, Richard J. Pruell, Kenneth J. Rocha, Christine M. Custer, Thomas W. Custer, Mark Cantwell
2009, Environmental Science & Technology (43) 8387-8392
While breeding tree swallows (Tachycineta bicolor) have been used as biomonitors for freshwater sites, we report the first use of this species to assess contaminant bioaccumulation from estuarine breeding grounds into these aerial insectivores. Eggs and nestlings were collected from nest boxes in a polychlorinated biphenyl (PCB) contaminated estuary, the...
Derivation of habitat-specific dissolved oxygen criteria for Chesapeake Bay and its tidal tributaries
Richard A. Batiuk, Denise L. Breitburg, Robert J. Diaz, Thomas M. Cronin, David H. Secor, Glen Thursby
2009, Journal of Experimental Marine Biology and Ecology (381) S204-S215
The Chesapeake 2000 Agreement committed its state and federal signatories to “define the water quality conditions necessary to protect aquatic living resources” in the Chesapeake Bay (USA) and its tidal tributaries. Hypoxia is one of the key water quality issues addressed as a result of the above Agreement. This paper...
A spatial model to prioritize sagebrush landscapes in the intermountain west (U.S.A.) for restoration
C.W. Meinke, S.T. Knick, D.A. Pyke
2009, Restoration Ecology (17) 652-659
The ecological integrity of Sagebrush (Artemisia spp.) ecosystems in the Intermountain West (U.S.A.) has been diminished by synergistic relationships among human activities, spread of invasive plants, and altered disturbance regimes. An aggressive effort to restore Sagebrush habitats is necessary if we are to stabilize or improve current habitat trajectories and...
A multidisciplinary effort to assign realistic source parameters to models of volcanic ash-cloud transport and dispersion during eruptions
Larry G. Mastin, Marianne C. Guffanti, R. Servranckx, P. Webley, S. Barsotti, K. Dean, A. Durant, John W. Ewert, A. Neri, W.I. Rose, David J. Schneider, Lee Siebert, B. Stunder, G. Swanson, A. Tupper, A. Volentik, Christopher F. Waythomas
2009, Journal of Volcanology and Geothermal Research (186) 10-21
During volcanic eruptions, volcanic ash transport and dispersion models (VATDs) are used to forecast the location and movement of ash clouds over hours to days in order to define hazards to aircraft and to communities downwind. Those models use input parameters, called “eruption source parameters”, such as plume height H,...
Measurement of soil carbon oxidation state and oxidative ratio by 13C nuclear magnetic resonance
W.C. Hockaday, C.A. Masiello, J. T. Randerson, R.J. Smernik, J.A. Baldock, O.A. Chadwick, J.W. Harden
2009, Journal of Geophysical Research G: Biogeosciences (114)
The oxidative ratio (OR) of the net ecosystem carbon balance is the ratio of net O2 and CO2 fluxes resulting from photosynthesis, respiration, decomposition, and other lateral and vertical carbon flows. The OR of the terrestrial biosphere must be well characterized to accurately estimate the terrestrial CO2 sink using atmospheric...
Metal contamination and post-remediation recovery in the Boulder River watershed, Jefferson County, Montana
Daniel M. Unruh, Stanley E Church, David A. Nimick, David L. Fey
2009, Geochemistry: Exploration, Environment, Analysis (9) 179-199
The legacy of acid mine drainage and toxic trace metals left in streams by historical mining is being addressed by many important yet costly remediation efforts. Monitoring of environmental conditions frequently is not performed but is essential to evaluate remediation effectiveness, determine whether clean-up goals have been met, and assess...
Hydrometeor-enhanced tephra sedimentation: Constraints from the 18 May 1980 eruption of Mount St. Helens
A.J. Durant, William I. Rose Jr., A.M. Sarna-Wojcicki, Steven Carey, A.C.M. Volentik
2009, Journal of Geophysical Research F: Earth Surface (114)
Uncertainty remains on the origin of distal mass deposition maxima observed in many recent tephra fall deposits. In this study the link between ash aggregation and the formation of distal mass deposition maxima is investigated through reanalysis of tephra fallout from the Mount St. Helens 18 May 1980 (MSH80) eruption....
Characterization of flux-grown Trace-element-doped titanite using the high-mass-resolution ion microprobe (SHRIMP-RG)
F.K. Mazdab
2009, Canadian Mineralogist (47) 813-831
Crystals of titanite can be readily grown under ambient pressure from a mixture of CaO, TiO2 and SiO2 in the presence of molten sodium tetraborate. The crystals produced are euhedral and prismatic, lustrous and transparent, and up to 5 mm in length. Titanite obtained by this method contains approximately 4300...
Using "big data" to optimally model hydrology and water quality across expansive regions
E.A. Roehl Jr., J.B. Cook, P.A. Conrads
2009, Conference Paper, Proceedings of World Environmental and Water Resources Congress 2009 - World Environmental and Water Resources Congress 2009: Great Rivers
This paper describes a new divide and conquer approach that leverages big environmental data, utilizing all available categorical and time-series data without subjectivity, to empirically model hydrologic and water-quality behaviors across expansive regions. The approach decomposes large, intractable problems into smaller ones that are optimally solved; decomposes complex signals into...
Backcountry recreation site and trail conditions: Haleakala National Park final report, May 2009
Jeffrey L. Marion, C. Carr
2009, Report
No abstract available....
Combined use of frequency‐domain electromagnetic and electrical resistivity surveys to delineate the freshwater/saltwater interface near saline lakes in the Nebraska Sand Hills, Nebraska, USA
John T. Ong, Eric A. White, John W. Lane Jr., Todd Halihan, Vitaly A Zlotnik
Dwain K. Butler, editor(s)
2009, Conference Paper, Proceedings of the Symposium on the Application of Geophysics to Engineering and Environmental Problems 2009
We investigate the use of frequency‐domain electromagnetic (FDEM) and electrical resistivity (ER) surveys for rapid and detailed characterization of the direction of lake‐aquifer fluxes and the configuration of salt plumes generated from saline lakes. This methodology was developed and applied at several lakes in the Nebraska Sand Hills, Nebraska, in...
