Cadmium biodynamics in the oligochaete Lumbriculus variegatus and its implications for trophic transfer
Lingtian Xie, D. Lambert, C. Martin, D.J. Cain, S. N. Luoma, D. Buchwalter
2008, Aquatic Toxicology (86) 265-271
It has become increasingly apparent that diet can be a major source of trace metal bioaccumulation in aquatic organisms. In this study, we examined cadmium uptake, efflux, and subcellular compartmentalization dynamics in the freshwater oligochaete Lumbriculus variegatus. L. variegatus is an important component of freshwater food webs in Europe and...
Volatility of bitumen prices and implications for the industry
E. D. Attanasi
2008, Natural Resources Research (17) 205-213
Sustained crude oil price increases have led to increased investment in and production of Canadian bitumen to supplement North American oil supplies. For new projects, the evaluation of profitability is based on a prediction of the future price path of bitumen and ultimately light/medium crude oil. This article examines the...
Temporal variation and the effect of rainfall on metals flux from the historic Beatson mine, Prince William Sound, Alaska, USA
L.L. Stillings, A. L. Foster, R.A. Koski, L. Munk, Wayne C. Shanks III
2008, Applied Geochemistry (23) 255-278
Several abandoned Cu mines are located along the shore of Prince William Sound, AK, where the effect of mining-related discharge upon shoreline ecosystems is unknown. To determine the magnitude of this effect at the former Beatson mine, the largest Cu mine in the region and a Besshi-type massive sulfide ore...
Influence of perched groundwater on base flow
Richard G. Niswonger, Graham E. Fogg
2008, Water Resources Research (44)
Analysis with a three‐dimensional variably saturated groundwater flow model provides a basic understanding of the interplay between streams and perched groundwater. A simplified, layered model of heterogeneity was used to explore these relationships. Base flow contribution from perched groundwater was evaluated with regard to varying hydrogeologic conditions, including the size...
Evaporite karst processes, landforms, and environmental problems
F. Gutierrez, K.S. Johnson, A.H. Cooper
2008, Conference Paper, Environmental Geology
[No abstract available]...
Food web dynamics in a seasonally varying wetland
D.L. DeAngelis, J.C. Trexler, D.D. Donalson
2008, Mathematical Biosciences and Engineering (5) 877-887
A spatially explicit model is developed to simulate the small fish community and its underlying food web, in the freshwater marshes of the Everglades. The community is simplified to a few small fish species feeding on periphyton and invertebrates. Other compartments are detritus, crayfish, and a piscivorous fish species. This...
A trade-off between model resolution and variance with selected Rayleigh-wave data
J. Xia, R. D. Miller, Y. Xu
2008, Conference Paper, SEG Technical Program Expanded Abstracts
Inversion of multimode surface-wave data is of increasing interest in the near-surface geophysics community. For a given near-surface geophysical problem, it is essential to understand how well the data, calculated according to a layered-earth model, might match the observed data. A data-resolution matrix is a function of the data kernel...
Limited change in dune mobility in response to a large decrease in wind power in semi-arid northern China since the 1970s
J.A. Mason, J. B. Swinehart, H. Lu, X. Miao, P. Cha, Y. Zhou
2008, Geomorphology (102) 351-363
The climatic controls on dune mobility, especially the relative importance of wind strength, remain incompletely understood. This is a key research problem in semi-arid northern China, both for interpreting past dune activity as evidence of paleoclimate and for predicting future environmental change. Potential eolian sand transport, which is approximately proportional...
Phylum Nematoda
A. Choudhury, Rebecca A. Cole
J. Eiras, Helmut E. Segner, Thomas Wahli, editor(s)
2008, Book chapter, Fish Diseases
No abstract available....
Using climate information for fuels management
Crystal A. Kolden, Timothy J. Brown
2008, Climate Ecosystem Fire Applications CEFA Report 08-01
Climate has come to the forefront of wildfire discussions in recent years as research contributes to the general understanding of how climate influences fuels availability to burn, the occurrence of severe fire weather conditions and other wildfire parameters. This understanding has crossed over into wildfire management applications through the creation...
Persistent earthquake clusters and gaps from slip on irregular faults
Tom Parsons
2008, Nature Geoscience (1) 59-63
Earthquake-producing fault systems like the San Andreas fault in California show self-similar structural variation1; earthquakes cluster in space,...
CO2‐induced suppression of transpiration cannot explain increasing runoff
Thomas G. Huntington
2008, Hydrological Processes (22) 311-314
No abstract available....
Questa baseline and pre-mining ground-water quality investigation. 17. Geomorphology of the Red River Valley, Taos County, New Mexico, and influence on ground-water flow in the shallow alluvial aquifer
Kirk R. Vincent
2008, Scientific Investigations Report 2006-5156
In April 2001, the U.S. Geological Survey (USGS) and the New Mexico Environment Department (NMED) began a cooperative study to infer the pre-mining ground-water chemistry at the Molycorp molybdenum mine site in the Red River Valley of north-central New Mexico. This report is one in a series of reports that...
The 1994–present eruption of Popocatépetl volcano: Background, current activity, and impacts
Hugo Delgados Granados, Servando De la Cruz-Reyna, Robert I. Tilling
2008, Journal of Volcanology and Geothermal Research (170) 1-4
No abstract available...
Bleaching increases likelihood of disease on Acropora palmatao (Lamarck) in Hawksnest Bay, St John, US Virgin Islands
E. M. Muller, Caroline S. Rogers, Anthony S. Spitzack, R. van Woesik
2008, Coral Reefs (27) 191-195
Anomalously high water temperatures may enhance the likelihood of coral disease outbreaks by increasing the abundance or virulence of pathogens, or by increasing host susceptibility. This study tested the compromised-host hypothesis, and documented the relationship between disease and temperature, through monthly monitoring of Acropora palmata colonies from May...
Time-series photographs of the sea floor in western Massachusetts Bay, version 2, 1989 - 1996
Bradford Butman, P. Soupy Dalyander, Michael H. Bothner, William N. Lange
2008, Data Series 265
Time-series photographs of the sea floor were obtained from an instrumented tripod deployed in western Massachusetts Bay at LT-A (42° 22.6' N, 70° 47.0' W; nominal water depth of 32 m; fig. 1) from December 1989 through September 2005. The photographs provide time-series observations of physical changes of the sea...
Chapter A6. Section 6.0. General information and guidelines for field-measured water-quality properties
Franceska D. Wilde
2008, Techniques of Water-Resources Investigations 09-A6.0
This report summarizes information, guidelines, and minimum requirements that apply generally to the seven field-measurement sections that comprise the rest of Chapter A6 of this U.S. Geological Survey (USGS) National Field Manual for the Collection of Water-Quality Data (NFM). Protocols are specified for establishing and maintaining data records, use of...
GIS technology and models for assessing landslide hazard and risk
A. Carrara, Richard J. Pike
2008, Geomorphology (94) 257-260
Advances in Geographical Information Systems (GIS) technology and the mathematical/statistical tools for modelling and simulation have led to the growing application of quantitative techniques in many areas of the earth sciences. Few disciplines have embraced these developments more enthusiastically than the study of landslide hazards. Because the shape of the...
Physicochemical properties and chemical characteristics of water, bed sediment, and mussel tissue from selected streams near the Redleg and Peason Ridge impact areas, Fort Polk Military Reservation, Louisiana, June 2001 - November 2003
Roland W. Tollett, Robert B. Fendick Jr.
2008, Scientific Investigations Report 2007-5151
At the request of the U.S. Army Joint Readiness Training Center and Fort Polk, the U.S. Geological Survey collected and analyzed water, bed-sediment, and mussel-tissue samples from selected streams near the Redleg impact area (RIA) and Peason Ridge impact areas (PRIA) at the Fort Polk Military Reservation (Reservation), Louisiana. from...
Effects of urbanization on stream ecosystems in the Willamette River basin and surrounding area, Oregon and Washington
Ian R. Waite, Steven Sobieszczyk, Kurt D. Carpenter, Andrew J. Arnsberg, Henry M. Johnson, Curt A. Hughes, Michael J. Sarantou, Frank A. Rinella
2008, Scientific Investigations Report 2006-5101-D
This report describes the effects of urbanization on physical, chemical, and biological characteristics of stream ecosystems in 28 watersheds along a gradient of urbanization in the Willamette River basin and surrounding area, Oregon and Washington, from 2003 through 2005. The study that generated the report is one of several urban-effects...
Chapter A7 Biological Indicators
Donna N. Myers, Franceska D. Wilde
2008, Techniques of Water-Resources Investigations 09-A7
The National Field Manual for the Collection of Water-Quality Data (National Field Manual) provides guidelines and standard procedures for U.S. Geological Survey (USGS) personnel who collect data used to assess the quality of the Nation's surface-water and ground-water resources. This chapter of the manual includes procedures for the (1) determination...
Physical property studies in the USGS GHASTLI Laboratory
William J. Winters, William F. Waite, Deborah R. Hutchinson, David H. Mason
2008, Fire in the Ice: NETL Methane Hydrate Newsletter (5) 6-9
One of the many challenges in studying methane hydrate is that it is unstable at typical surface pressure and temperature conditions. To enable methane hydrates and hydrate-bearing sediments to be formed, analyzed, and experimented with, the National Energy Technology Laboratory (NETL), and the U.S. Geological Survey (USGS) in Woods Hole,...
Chapter A6. Field Measurements
Franceska D. Wilde, editor(s)
2008, Techniques of Water-Resources Investigations 09-A6
The National Field Manual for the Collection of Water-Quality Data (National Field Manual) provides guidelines and standard procedures for U.S. Geological Survey (USGS) personnel who collect data used to assess the quality of the Nation's surface-water and ground-water resources. Chapter A6 presents procedures and guidelines for the collection of data...
Radiocarbon dates from volcanic deposits of the Chaos Craigs and Cinder Cone eruptive sequences and other deposits, Lassen Volcanic National Park and vicinity, California
Michael A. Clynne, Robert L. Christiansen, Deborah A. Trimble, John P. McGeehin
2008, Open-File Report 2002-290
This contribution reports radiocarbon ages obtained from charcoal, wood and other samples collected between 1979 and 2001 in Lassen Volcanic National Park and vicinity and a few samples from other nearby localities. Most of the samples are from the Chaos Crags and Cinder Cone eruptive sequences. Brief summaries are given...
Geologic map of Mount St. Helens, Washington prior to the 1980 eruption
Clifford A. Hopson
2008, Open-File Report 2002-468
It is rare that a geologic map exists for a volcano prior to such a catastrophic modification as that produced by the eruption of Mount St. Helens in 1980. As such, this map provides an important historical record of the volcano prior to that eruption. The map has not been...
