Long-term reductions in anthropogenic nutrients link to improvements in Chesapeake Bay habitat
H. Ruhl, N. B. Rybicki
2010, Proceedings of the National Academy of Sciences of the United States of America (107) 16566-16570
Great effort continues to focus on ecosystem restoration and reduction of nutrient inputs thought to be responsible, in part, for declines in estuary habitats worldwide. The ability of environmental policy to address restoration is limited, in part, by uncertainty in the relationships between costly restoration and benefits. Here, we present...
Shallow magma accumulation at Kīlauea Volcano, Hawai‘i, revealed by microgravity surveys
Daniel J. Johnson, Albert A. Eggers, Marco Bagnardi, Maurizio Battaglia, Michael P. Poland, Asta Miklius
2010, Geology (38) 1139-1142
Using microgravity data collected at Kīlauea Volcano, Hawai‘i (United States), between November 1975 and January 2008, we document significant mass increase beneath the east margin of Halema‘uma‘u Crater, within Kīlauea's summit caldera. Surprisingly, there was no sustained uplift accompanying the mass accumulation. We propose that the positive gravity residual in...
Arsenic Geochemistry and Hydrostratigraphy in Midwestern U.S. Glacial Deposits
Terry L. Root, M.B. Gotkowitz, J.M. Bahr, J.W. Attig
2010, Ground Water (48) 903-912
Arsenic concentrations exceeding the U.S. EPA's 10 ??g/L standard are common in glacial aquifers in the midwestern United States. Previous studies have indicated that arsenic occurs naturally in these aquifers in association with metal-(hydr)oxides and is released to groundwater under reducing conditions generated by microbial oxidation of organic matter. Despite...
Discovery of ammocrypta clara (western sand darter) in the Upper Ohio River of West Virginia
Dan A. Cincotta, Stuart A. Welsh
2010, American Midland Naturalist (163) 318-325
Ammocrypta clara Jordan and Meek (western sand darter) occurs primarily in the western portions of Mississippi River system, but also has been reported from a Lake Michigan drainage and a few eastern Texas Gulf Slope rivers. Additional range records depict a semi-disjunct distribution within the Ohio River drainage, including collections from...
Changes in agriculture and abundance of snow geese affect carrying capacity of sandhill cranes in Nebraska
A.T. Pearse, Gary L. Krapu, D.A. Brandt, P.J. Kinzel
2010, Journal of Wildlife Management (74) 479-488
The central Platte River valley (CPRV) in Nebraska, USA, is a key spring-staging area for approximately 80 of the midcontinent population of sandhill cranes (Grus canadensis; hereafter cranes). Evidence that staging cranes acquired less lipid reserves during the 1990s compared to the late 1970s and increases in use of the...
Top of head scarp and internal scarps for landslide deposits in the Little North Santiam River Basin, Oregon
Steven Sobieszczyk
2010, Report
Data points represent head scarps, flank scarps, and minor internal scarps (linear) associated with landslide deposits in the Little North Santiam River Basin, Oregon. This work was completed as part of the Master's thesis "Turbidity Monitoring and LiDAR Imagery Indicate Landslides are Primary Source of Suspended-Sediment Load in the Little...
Location of photographs showing landslide features in the Little North Santiam River Basin, Oregon
Steven Sobieszczyk
2010, Report
Data points represent locations of photographs taken of landslides in the Little North Santiam River Basin, Oregon. Photos were taken in spring of 2010 during field verification of landslide locations (deposits previously mapped using LiDAR-derived imagery). The photographs depict various landslide features, such as scarps, pistol-butt trees, or colluvium deposits....
Landslide deposit boundaries for the Little North Santiam River Basin, Oregon
Steven Sobieszczyk
2010, Report
This layer is an inventory of existing landslides deposits in the Little North Santiam River Basin, Oregon (2009). Each landslide deposit shown on this map has been classified according to a number of specific characteristics identified at the time recorded in the GIS database. The classification scheme was developed by...
Landslide inventory for the Little North Santiam River Basin, Oregon
Steven Sobieszczyk
2010, Report
This geodatabase is an inventory of existing landslides in the Little North Santiam River Basin, Oregon (2009). Each landslide feature shown has been classified according to a number of specific characteristics identified at the time recorded in the GIS database. The classification scheme was developed by the Oregon Department of...
National Land Cover Database 2001 (NLCD01) Imperviousness Layer Tile 3, Southwest United States: IMPV01_3
Andrew E. LaMotte, Michael Wieczorek
2010, Data Series 587-C
This 30-meter resolution data set represents the imperviousness layer for the conterminous United States for the 2001 time period. The data have been arranged into four tiles to facilitate timely display and manipulation within a Geographic Information System, browse graphic: nlcd01-partition. The National Land Cover Data Set for 2001 was...
National Land Cover Database 2001 (NLCD01) Imperviousness Layer Tile 2, Northeast United States: IMPV01_2
Andrew E. LaMotte, Michael Wieczorek
2010, Data Series 587-B
This 30-meter resolution data set represents the imperviousness layer for the conterminous United States for the 2001 time period. The data have been arranged into four tiles to facilitate timely display and manipulation within a Geographic Information System, browse graphic: nlcd01-partition. The National Land Cover Data Set for 2001 was...
Estimating flood frequency
David A. Eash
Cornelia Fleischer Mutel, editor(s)
2010, Book chapter, A watershed year: Anatomy of the Iowa floods of 2008
No abstract available....
Prey use by Swainson's Hawks in the lesser prairie-chicken range of the southern high plains of Texas
A.C. Behney, C. W. Boal, Heather A. Whitlaw, D.R. Lucia
2010, Journal of Raptor Research (44) 317-322
[No abstract available]...
Evaluation of Maryland abutment scour equation through selected threshold velocity methods
S.T. Benedict
2010, Transportation Research Record 153-167
The U.S. Geological Survey, in cooperation with the Maryland State Highway Administration, used field measurements of scour to evaluate the sensitivity of the Maryland abutment scour equation to the critical (or threshold) velocity variable. Four selected methods for estimating threshold velocity were applied to the Maryland abutment scour equation, and...
Ecoregions and stream morphology in eastern Oklahoma
D. K. Splinter, D.C. Dauwalter, R. A. Marston, W.L. Fisher
2010, Geomorphology (122) 117-128
Broad-scale variables (i.e., geology, topography, climate, land use, vegetation, and soils) influence channel morphology. How and to what extent the longitudinal pattern of channel morphology is influenced by broad-scale variables is important to fluvial geomorphologists and stream ecologists. In the last couple of decades, there has been an increase in...
Colony attendance patterns by mated Forster's Terns Sterna forsteri using an automated data-logging receiver system
Jill D. Bluso-Demers, Joshua T. Ackerman, John Y. Takekawa
2010, Ardea (98) 59-65
In order to examine 24-hour colony attendance patterns by mated Forster's Terns Sterna forsteri in South San Francisco Bay, California, during incubation and chick-rearing stages, we radio-marked 10 individuals consisting of five pairs and recorded colony attendance using an automated data-logging receiver system. We calculated and analyzed five variables: the total attendance...
The tidally averaged momentum balance in a partially and periodically stratified estuary
M.T. Stacey, Matthew L. Brennan, Jon R. Burau, Stephen G. Monismith
2010, Journal of Physical Oceanography (40) 2418-2434
Observations of turbulent stresses and mean velocities over an entire spring–neap cycle are used to evaluate the dynamics of tidally averaged flows in a partially stratified estuarine channel. In a depth-averaged sense, the net flow in this channel is up estuary due to interaction of tidal forcing with the geometry...
Rice production systems and avian influenza: Interactions between mixed-farming systems, poultry and wild birds
S.B. Muzaffar, John Y. Takekawa, D.J. Prosser, S. H. Newman, X. Xiao
2010, Waterbirds (33) 219-230
Wild waterfowl are the reservoir for avian influenza viruses (AIVs), a family of RNA viruses that may cause mild sickness in waterbirds. Emergence of H5N1, a highly pathogenic avian influenza (HPAI) strain, causing severe disease and mortality in wild birds, poultry and humans, had raised concerns about the role of...
Composition, distribution, and potential toxicity of organochlorine mixtures in bed sediments of streams
Patrick J. Phillips, Lisa H. Nowell, Robert J. Gilliom, Naomi Nakagaki, Karen Riva-Murray, Carolyn VanAlstyne
2010, Science of the Total Environment (408) 594-606
Mixtures of organochlorine compounds have the potential for additive or interactive toxicity to organisms exposed in the stream. This study uses a variety of methods to identify mixtures and a modified concentration-addition approach to estimate their potential toxicity at 845 stream sites across the United States sampled between 1992 and...
Historical arroyo formation: documentation of magnitude and timing of historical changes using repeat photography
Robert H. Webb, Richard Hereford
Robert H. Webb, Diane E. Boyer, Raymond M. Turner, editor(s)
2010, Book chapter, Repeat photography: methods and applications in the natural sciences
High resolution near-bed observations in winter near Cape Hatteras, North Carolina
Marinna A. Martini, Brandy N. Armstrong, John C. Warner
2010, Conference Paper, OCEANS 2009, MTS/IEEE Biloxi - Marine Technology for Our Future: Global and Local Challenges
The U.S. Geological Survey (USGS) Coastal and Marine Science Center in Woods Hole, Massachusetts, is leading an effort to understand the regional sediment dynamics along the coastline of North and South Carolina. As part of the Carolinas Coastal Change Processes Project, a geologic framework study in June of 2008 by...
Debris flows resulting from glacial-lake outburst floods in tibet, China
P. Cui, C. Dang, Z. Cheng, K. Scott
2010, Physical Geography (31) 508-527
During the last 70 years of general climatic amelioration, 18 glacial-lake outburst floods (GLOFs) and related debris flows have occurred from 15 moraine-dammed lakes in Tibet, China. Catastrophic loss of life and property has occurred because of the following factors: the large volumes of water discharged, the steep gradients of...
Depositional setting, petrology and chemistry of Permian coals from the Paraná Basin: 2. South Santa Catarina Coalfield, Brazil
W. Kalkreuth, M. Holz, A. Mexias, M. Balbinot, J. Levandowski, J. Willett, R. Finkelman, H. Burger
2010, International Journal of Coal Geology (84) 213-236
In Brazil economically important coal deposits occur in the southern part of the Paraná Basin, where coal seams occur in the <a title="Learn more about Permian from ScienceDirect's AI-generated Topic...
Comment on "analysis of pumping test data for determining unconfined-aquifer parameters: Composite analysis or not?": Paper published in Hydrogeology Journal (2009) 17:1133-1147, by Hund-Der Yeh and Yen-Chen Huang
Allen F. Moench
2010, Hydrogeology Journal (18) 1975-1977
No abstract available....
Detrital zircon analysis of Mesoproterozoic and neoproterozoic metasedimentary rocks of northcentral idaho: Implications for development of the Belt-Purcell basin
R. S. Lewis, J.D. Vervoort, R. F. Burmester, P.J. Oswald
2010, Canadian Journal of Earth Sciences (47) 1383-1404
The authors analyzed detrital zircon grains from 10 metasedimentary rock samples of the Priest River complex and three other amphibolite-facies metamorphic sequences in north-central Idaho to test the previous assignment of these rocks to the Mesoproterozoic Belt-Purcell Supergroup. Zircon grains from two samples of the Prichard Formation (lower Belt) and...
