Climate model biases in seasonality of continental water storage revealed by satellite gravimetry
Sean Swenson, P. C. D. Milly
2006, Water Resources Research (42)
Satellite gravimetric observations of monthly changes in continental water storage are compared with outputs from five climate models. All models qualitatively reproduce the global pattern of annual storage amplitude, and the seasonal cycle of global average storage is reproduced well, consistent with earlier studies. However, global average agreements mask systematic...
Traversing a boreal forest landscape: Summer movements of Tule Greater White-fronted Geese
Craig R. Ely, K.S. Bollinger, Jerry W. Hupp, D.V. Derksen, J. Terenzi, John Y. Takekawa, D.L. Orthmeyer, T.C. Rothe, M.J. Petrula, D.R. Yparraguirre
2006, Waterbirds (29) 43-55
We monitored the movement, distribution and site affinities of radio-marked Tule Greater White-fronted Geese (Anser albifrons elgasi) during spring and summer in Alaska, 1994-1997 and 2004. Our assessment of summer movements was comprehensive, as locations were obtained during prenesting, nesting, and molt for over 90% of geese with active radios...
Microhabitat use, home range, and movements of the alligator snapping turtle, Macrochelys temminckii, in Oklahoma
J.D. Riedle, P.A. Shipman, S. F. Fox, David M. Leslie Jr.
2006, Southwestern Naturalist (51) 35-40
Little is known about the ecology of the alligator snapping turtle, Macrochelys temminckii, particularly dentography and behavior. To learn more about the species in Oklahoma, we conducted a telemetry project on 2 small streams at Sequoyah National Wildlife Refuge, an 8,417.5-ha refuge located in east-central Oklahoma. Between June 1999 and...
Industrial sand and gravel
T.P. Dolley
2006, Mining Engineering (58) 38
In 2005, domestic production of industrial sand and gravel was about 31 Mt, a 5% increase from 2004. This increase was bouyed by robust construction and petroleum sectors of the US economy. Based on estimated world production figures, the United States was the world's leading producer and consumer of industrial...
The vertical hydraulic conductivity of an aquitard at two spatial scales
D.J. Hart, K. R. Bradbury, D. T. Feinstein
2006, Ground Water (44) 201-211
Aquitards protect underlying aquifers from contaminants and limit recharge to those aquifers. Understanding the mechanisms and quantity of ground water flow across aquitards to underlying aquifers is essential for ground water planning and assessment. We present results of laboratory testing for shale hydraulic conductivities, a methodology for determining the vertical...
Changes in late-winter snowpack depth, water equivalent, and density in Maine, 1926-2004
G.A. Hodgkins, R. W. Dudley
2006, Conference Paper, Hydrological Processes
Twenty-three snow-course sites in and near Maine, USA, with records spanning at least 50 years through to 2004 were tested for changes over time in snowpack depth, water equivalent, and density in March and April. Of the 23 sites, 18 had a significant decrease (Mann-Kendall test, p < 0??1) in...
Holocene history of drift ice in the northern North Atlantic: Evidence for different spatial and temporal modes
M. Moros, John T. Andrews, D. D. Eberl, E. Jansen
2006, Paleoceanography (21)
We present new high-resolution proxy data for the Holocene history of drift ice off Iceland based on the mineralogy of the <2-mm sediment fraction using quantitative X-ray diffraction. These new data, bolstered by a comparison with published proxy records, point to a long-term increasing trend in drift ice input into...
Late Pleistocene outburst flooding from pluvial Lake Alvord into the Owyhee River, Oregon
D.T. Carter, L.L. Ely, J. E. O’Connor, C.R. Fenton
2006, Geomorphology (75) 346-367
At least one large, late Pleistocene flood traveled into the Owyhee River as a result of a rise and subsequent outburst from pluvial Lake Alvord in southeastern Oregon. Lake Alvord breached Big Sand Gap in its eastern rim after reaching an elevation of 1292 m, releasing 11.3 km3 of water...
Mobilization of lead and other trace elements following shock chlorination of wells
R. L. Seiler
2006, Science of the Total Environment (367) 757-768
Many owners of domestic wells shock chlorinate their wells to treat for bacterial contamination or control bad odors from sulfides. Analysis of well water with four wells from Fallon, Nevada, showed that following recommended procedures for shock chlorinating wells can cause large, short-lasting increases in trace-element concentrations in ground water,...
Numerical modeling of a long-term in situ chemical osmosis experiment in the Pierre Shale, South Dakota
A.M. Garavito, H. Kooi, C. E. Neuzil
2006, Advances in Water Resources (29) 481-492
We have numerically modeled evolving fluid pressures and concentrations from a nine-year in situ osmosis experiment in the Pierre Shale, South Dakota. These data were obtained and recently interpreted by one of us (C.E.N.) as indicating a potentially significant role for chemical osmosis in media like the Pierre Shale. That...
Effects of Chinese mineral strategies on the U.S. minerals industry
L. McCartan, W. D. Menzie, D.E. Morse, J.F. Papp, P.A. Plunkert, P.-K. Tse
2006, Mining Engineering (58) 37-42
For more than two decades now, China has been undergoing rapid economic growth and industrialization. The industrialization and urbanization of the once rural, farming nation is leading to increased consumption of mineral commodities to build infrastructure and to make into consumer goods. This increased consumption has led to higher mineral...
A system to evaluate the scientific quality of biological and restoration objectives using National Wildlife Refuge Comprehensive Conservation Plans as a case study
R.L. Schroeder
2006, Journal for Nature Conservation (14) 200-206
It is widely accepted that plans for restoration projects should contain specific, measurable, and science-based objectives to guide restoration efforts. The United States Fish and Wildlife Service (USFWS) is in the process of developing Comprehensive Conservation Plans (CCPs) for more than 500 units in the National Wildlife Refuge System (NWRS)....
Fishes associated with North Carolina shelf-edge hardbottoms and initial assessment of a proposed marine protected area
A.M. Quattrini, Steve W. Ross
2006, Bulletin of Marine Science (79) 137-163
Fish community data are limited from deeper shelf-edge hardbottoms along the southeastern U.S. continental shelf. This lack of data Hampers the design of recently proposed marine protected areas (MPAs) on the outer shelf of the southeastern U.S. During 2001-2004, sampling was conducted (57-25 m) to describe habitats and fish communities...
Simulating the effects of frequent fire on southern california coastal shrublands
A.D. Syphard, J. Franklin, Jon E. Keeley
2006, Ecological Applications (16) 1744-1756
Fire disturbance is a primary agent of change in the mediterranean-climate chaparral shrublands of southern California, USA. However, fire frequency has been steadily increasing in coastal regions due to ignitions at the growing wildland-urban interface. Although chaparral is resilient to a range of fire frequencies, successively short intervals between fires...
Storm-induced redistribution of deepwater sediments in Lake Ontario
J.D. Halfman, D.E. Dittman, R.W. Owens, M.D. Etherington
2006, Journal of Great Lakes Research (32) 348-360
High-resolution seismic reflection profiles, side-scan sonar profiles, and surface sediment analyses for grain size (% sand, silt & clay), total organic carbon content, and carbonate content along shore-perpendicular transects offshore of Olcott and Rochester in Lake Ontario were utilized to investigate cm-thick sands or absence of deep-water postglacial sediments in...
Liquefaction hazard mapping with LPI in the Greater Oakland, California, area
T.L. Holzer, M.J. Bennett, T.E. Noce, A.C. Padovani, J. C. Tinsley III
2006, Earthquake Spectra (22) 693-708
Cumulative frequency distributions of the liquefaction potential index (LPI) of surficial geologic units were used to define the liquefaction hazard in a 140-km2 area along the eastern shore of San Francisco Bay near Oakland, California. LPI values were computed for 202 cone penetration tests conducted in surficial geologic units in...
Seismic response and damage detection analyses of an instrumented steel moment-framed building
J.E. Rodgers, M. Çelebi
2006, Journal of Structural Engineering (132) 1543-1552
The seismic performance of steel moment-framed buildings has been of particular interest since brittle fractures were discovered at the beam-column connections in a number of buildings following the M 6.7 Northridge earthquake of January 17, 1994. A case study of the seismic behavior of an extensively instrumented 13-story steel moment...
Isotope geochemistry of early Kilauea magmas from the submarine Hilina bench: The nature of the Hilina mantle component
Jun-Ichi Kimura, Thomas W. Sisson, Natsuko Nakano, Michelle L. Coombs, Peter W. Lipman
2006, Journal of Volcanology and Geothermal Research (151) 51-72
Submarine lavas recovered from the Hilina bench region, offshore Kilauea, Hawaii Island provide information on ancient Kilauea volcano and the geochemical components of the Hawaiian hotspot. Alkalic lavas, including nephelinite, basanite, hawaiite, and alkali basalt, dominate the earliest stage of Kilauea magmatism. Transitional basalt pillow lavas are an intermediate phase,...
Reproductive and early life stages pathology - Histopathology workshop report
D.W. Bruno, B. Nowak, Diane G. Elliott
2006, Bulletin of the European Association of Fish Pathologists (26) 55-56
Pathology occurring during reproduction and larval development represents an important part of the life cycle of fish, and the diseases that affect eggs and larvae often result in significant losses. However, mortality during this period is frequently ignored or poorly researched as the temptation is to replace the losses rather...
Associations of breeding birds with fire-influenced and riparian-upland gradients in a longleaf pine ecosystem
J. C. Allen, S.M. Krieger, J. R. Walters, J.A. Collazo
2006, The Auk (123) 1110-1128
We determined the effects of fire history and a riparian-upland gradient on the breeding bird community at Fort Bragg Military Installation in North Carolina, one of the largest remnant areas of the endangered longleaf pine (Pinus palustris) ecosystem. Study sites were classified into two treatments: fire-intense (areas experiencing growing-season burns)...
A trait-based test for habitat filtering: Convex hull volume
W.K. Cornwell, D.W. Schwilk, D. D. Ackerly
2006, Ecology (87) 1465-1471
Community assembly theory suggests that two processes affect the distribution of trait values within communities: competition and habitat filtering. Within a local community, competition leads to ecological differentiation of coexisting species, while habitat filtering reduces the spread of trait values, reflecting shared ecological tolerances. Many statistical tests for the effects...
The effect of multiple stressors on salt marsh end-of-season biomass
J.M. Visser, C.E. Sasser, B.S. Cade
2006, Estuaries and Coasts (29) 328-339
It is becoming more apparent that commonly used statistical methods (e.g., analysis of variance and regression) are not the best methods for estimating limiting relationships or stressor effects. A major challenge of estimating the effects associated with a measured subset of limiting factors is to account for the effects of...
Last glacial maximum and Holocene lake levels of Owens Lake, eastern California, USA
S.N. Bacon, R. M. Burke, S.K. Pezzopane, A. S. Jayko
2006, Quaternary Science Reviews (25) 1264-1282
Stratigraphic investigations of fluvio-deltaic and lacustrine sediments exposed in stream cuts, quarry walls, and deep trenches east of the Sierra Nevada in Owens Valley near Lone Pine, California have enabled the reconstruction of pluvial Owens Lake level oscillations. Age control for these sediments is from 22 radiocarbon (14C) dates and...
Great earthquakes of variable magnitude at the Cascadia subduction zone
A.R. Nelson, H.M. Kelsey, Robert C. Witter
2006, Quaternary Research (65) 354-365
Comparison of histories of great earthquakes and accompanying tsunamis at eight coastal sites suggests plate-boundary ruptures of varying length, implying great earthquakes of variable magnitude at the Cascadia subduction zone. Inference of rupture length relies on degree of overlap on radiocarbon age ranges for earthquakes and tsunamis, and relative amounts...
Health impacts of coal: Should we be concerned?
R. B. Finkelman, H. E. Belkin, J.A. Centeno
2006, Geotimes (51) 24-28
[No abstract available]...
