Analysis of a cryolava flow-like feature on Titan
L. Le Corre, Stéphane Le Mouélic, Christophe Sotin, J. #NAME? Combe, S. Rodriguez, J. W. Barnes, R. H. Brown, B. J. Buratti, R. Jaumann, J. Soderblom, L.A. Soderblom, R. Clark, K. H. Baines, P. D. Nicholson
2009, Planetary and Space Science (57) 870-879
This paper reports on the analysis of the highest spatial resolution hyperspectral images acquired by the Visual and Infrared Mapping Spectrometer (VIMS) onboard the Cassini spacecraft during its prime mission. A bright area matches a flow-like feature coming out of a caldera-like feature observed in Synthetic Aperture Radar (SAR) data...
Movement and habitat use of sika and white-tailed deer on Assateague Island National Seashore, Maryland
Duane R. Diefenbach, Sonja Christensen
2009, Technical Report NPS/NER/NRTR—2009/140
This research project was conducted to describe habitat use of sika deer (Cervus nippon) and white-tailed deer (Odocoileus virginianus) and possibly attribute the effects of ungulate herbivory to specific deer species, if spatial separation in habitat use could be identified. Sturm (2007) conducted an exclosure study to document the effect...
Selected achievements, science directions, and new opportunities for the WEBB small watershed research program
Pierre D. Glynn, Matthew C. Larsen, Earl A. Greene, Heather L. Buss, David W. Clow, Randall J. Hunt, M. Alisa Mast, Sheila F. Murphy, Norman E. Peters, Stephen D. Sebestyen, James B. Shanley, John F. Walker
2009, Conference Paper, Planning for an uncertain future - Monitoring, integration, and adaptation (SIR 2009-5049)
Over nearly two decades, the Water, Energy, and Biogeochemical Budgets (WEBB) small watershed research program of the U.S. Geological Survey (USGS) has documented how water and solute fluxes, nutrient, carbon, and mercury dynamics, and weathering and sediment transport respond to natural and humancaused drivers, including climate, climate change, and atmospheric...
Assessment of electrical resistivity method to map groundwater seepage zones in heterogeneous sediments
Michael P. Gagliano, Jonathan E. Nyquist, Laura Toran, Donald O. Rosenberry
2009, Conference Paper, Symposium on the application of geophysics to engineering and environmental problems 2009
Underwater electrical‐resistivity data were collected along the southwest shore of Mirror Lake, NH, as part of a multi‐year assessment of the utility of geophysics for mapping groundwater seepage beneath lakes. We found that resistivity could locate shoreline sections where water is seeping out of the lake. A resistivity line along...
Using a coupled groundwater/surfacewater model to predict climate-change impacts to lakes in the Trout Lake watershed, Northern Wisconsin
John F. Walker, Randall J. Hunt, Steven L. Markstrom, Lauren E. Hay, John Doherty
2009, Conference Paper, Planning for an uncertain future - Monitoring, integration, and adaptation (SIR2009-5049)
A major focus of the U.S. Geological Survey’s Trout Lake Water, Energy, and Biogeochemical Budgets (WEBB) project is the development of a watershed model to allow predictions of hydrologic response to future conditions including land-use and climate change. The coupled groundwater/surface-water model GSFLOW was chosen for this purpose because it...
Modeling fuel succession
Brett Davis, Jan W. Van Wagtendonk, Jen Beck, Kent A. van Wagtendonk
2009, Fire Management Today (69) 18-21
Surface fuels data are of critical importance for supporting fire incident management, risk assessment, and fuel management planning, but the development of surface fuels data can be expensive and time consuming. The data development process is extensive, generally beginning with acquisition of remotely sensed spatial data such as aerial photography...
Sexing California Clapper Rails using morphological measurements
Cory T. Overton, Michael L. Casazza, John Y. Takekawa, Tobias M. Rohmer
2009, North American Bird Bander (34) 58-64
California Clapper Rails (Rallus longirostris obsoletus) have monomorphic plumage, a trait that makes identification of sex difficult without extensive behavioral observation or genetic testing. Using 31 Clapper Rails (22 females, 9 males), caught in south San Francisco Bay, CA, and using easily measurable morphological characteristics, we developed a discriminant function...
Integrating terrestrial LiDAR and stereo photogrammetry to map the Tolay lakebed in northern San Francisco Bay
Isa Woo, Rune Storesund Rune, John Y. Takekawa, Rachel J. Gardiner, Steve Ehret Steve
2009, Conference Paper, Planning for an uncertain future - Monitoring, integration, and adaptation
The Tolay Creek Watershed drains approximately 3,520 ha along the northern edge of San Francisco Bay. Surrounded by a mosaic of open space conservation easements and public wildlife areas, it is one of the only watersheds in this urbanized estuary that is protected from its headwaters to the bay. Tolay...
High-frequency in situ optical measurements during a storm event: Assessing relationships between dissolved organic matter, sediment concentrations, and hydrologic processes
John Franco Saraceno, Brian A. Pellerin, Bryan D. Downing, Emmanuel Boss, Philip A. M. Bachand, Brian A. Bergamaschi
2009, Journal of Geological Research (114)
Dissolved organic matter (DOM) dynamics during storm events has received considerable attention in forested watersheds, but the extent to which storms impart rapid changes in DOM concentration and composition in highly disturbed agricultural watersheds remains poorly understood. In this study, we used identical in situ optical sensors for DOM fluorescence...
Cascading effects of fishing on Galapagos rocky reef communities: reanalysis using corrected data
Jorge I. Sonnenholzner, Lydia B. Ladah, Kevin D. Lafferty
2009, Marine Ecology Progress Series (375) 209-218
This article replaces Sonnenholzner et al. (2007; Mar Ecol Prog Ser 343:77–85), which was retracted on September 19, 2007, due to errors in entry of data on sea urchins. We sampled 10 highly fished and 10 (putatively) lightly fished shallow rocky reefs in the southeastern area of the...
Monitoring benthic aIgal communides: A comparison of targeted and coefficient sampling methods
Matthew S. Edwards, M. Tim Tinker
2009, Algae (24) 111-120
Choosing an appropriate sample unit is a fundamental decision in the design of ecological studies. While numerous methods have been developed to estimate organism abundance, they differ in cost, accuracy and precision.Using both field data and computer simulation modeling, we evaluated the costs and benefits associated with two methods commonly...
Nest site selection by greater sage-grouse in Mono County, California
Eric J. Kolada, James S. Sedinger, Michael L. Casazza
2009, Journal of Wildlife Management (73) 1333-1340
Loss of nesting habitat is believed to be a factor in the decline of greater sage-grouse (Centrocercus urophasianus) throughout its range. Few data are available for sage-grouse in Mono County, California, USA, in the most southwestern portion of the species' range. We studied habitat selection of nesting sage-grouse in Mono...
Rapid incision of the Colorado River in Glen Canyon - insights from channel profiles, local incision rates, and modeling of lithologic controls
K. L. Cook, K.X. Whipple, A.M. Heimsath, Thomas C. Hanks
2009, Earth Surface Processes and Landforms (34) 994-1010
The Colorado River system in southern Utah and northern Arizona is continuing to adjust to the baselevel fall responsible for the carving of the Grand Canyon. Estimates of bedrock incision rates in this area vary widely, hinting at the transient state of the Colorado and its tributaries. In conjunction with...
Tamarisk (Tamarix spp.) water fluxes before, during and after episodic defoliation by the saltcedar leaf beetle
K. R. Hultine, P.L. Nagler, P.E. Dennison, S.E. Bush, J.R. Ehleringer
2009, Book, Acta Horticulturae: VII International Workshop on Sap Flow
Tamarisk (Tamarix) species are among the most successful and economically costly plant invaders in the western United States, in part due to its potential to remove large amounts of water from shallow aquifers. Accordingly, local, state and federal agencies have released a new biological control - the saltcedar leaf beetle...
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...
Remote monitoring of tamarisk defoliation and evapotranspiration following saltcedar leaf beetle attack
P.E. Dennison, P.L. Nagler, K. R. Hultine, E. P. Glenn, J.R. Ehleringer
2009, Remote Sensing of Environment (113) 1462-1472
Tamarisk (Tamarix spp.) has invaded riparian ecosystems throughout the Western United States, including significant portions of riparian ecosystems within U.S. National Parks and Monuments. Recently, the saltcedar leaf beetle (Diorhabda elongata) was released as a tamarisk biocontrol agent. Although initial releases have been monitored, no comprehensive program is currently in...
Preparing a population for an earthquake like Chi-Chi: The Great Southern California ShakeOut
Lucile M. Jones, The ShakeOut Team
2009, Conference Paper, Improving earthquake mitigation through innovations and applications in seismic science, engineering, communication, and response, Proceedings of a U.S.-Iran seismic workshop
The Great Southern California ShakeOut was a week of special events featuring the largest earthquake drill in United States history. On November 13, 2008, over 5 million southern Californians pretended that a magnitude-7.8 earthquake had occurred and practiced actions that could reduce its impact on their lives. The primary message...
Geospatial Data Used in Water-Level and Land-Subsidence Studies in the Mojave River and Morongo Groundwater Basins for 2008
Carolyn Glockhoff, Christina L. Stamos
2009, Report
During 2008, the U.S. Geological Survey and other agencies made approximately 2,500 water-level measurements in the Mojave River and Morongo groundwater basins. These data document recent conditions and, when compared with previous data, changes in groundwater levels. A water-level contour map was drawn using data from about 700 wells, providing...
Osprey: Worldwide sentinel species for assessing and monitoring environmental contamination in rivers, lakes, reservoirs, and estuaries
Robert A. Grove, Charles J. Henny, James L. Kaiser
2009, Journal of Toxicology and Environmental Health, Part B: Critical Reviews (12) 25-44
In the United States, many fish and wildlife species have been used nationwide to monitor environmental contaminant exposure and effects, including carcasses of the bald eagle (Haliaeetus leucocephalus), the only top avian predator regularly used in the past. Unfortunately, bald eagles are sensitive to investigator intrusion at the nest. Thus,...
Analysis of vegetation changes in Rock Creek Park, 1991-2007
Jeff S. Hatfield, Cairn Krafft
2009, Natural Resource Technical Report NPS/NCR/NCRO/NRTR--2009/001
Vegetation data collected at Rock Creek Park every 4 years during 1991-2007 were analyzed for differences among 3 regions within the park and among years. The variables measured and analyzed were percentage of twigs browsed, percentage of canopy cover, species richness of herbaceous plants, number of tree seedlings in each...
Effects of urbanization on the chemical, physical, and biological characteristics of small Blackland Prairie streams in and near the Dallas-Fort Worth metropolitan area, Texas
J. Bruce Moring
2009, Scientific Investigations Report 2006-5101-C
In 2001, the U.S. Geological Survey National Water Quality Assessment Program began a series of studies in the contiguous United States to examine the effects of urbanization on the chemical, physical, and biological characteristics of streams. Small streams in the Texas Blackland Prairie level III ecoregion in and near the...
Coastal-Change and Glaciological Map of the Palmer Land Area, Antarctica: 1947-2009
Jane G. Ferrigno, Alison J. Cook, Amy M. Mathie, Richard S. Williams Jr., Charles Swithinbank, Kevin M. Foley, Adrian J. Fox, Janet W. Thomson, Jorn Sievers
2009, IMAP 2600-C
Reduction in the area and volume of the two polar ice sheets is intricately linked to changes in global climate, and the resulting rise in sea level could severely impact the densely populated coastal regions on Earth. Antarctica is Earth's largest reservoir of glacial ice. Melting of the West Antarctic...
Alaska resource data file, new and revised records version 1.7
U.S. Geological Survey
2008, Open-File Report 2008-1225
No abstract available....
Mycobacteriosis in striped bass
Frank Panek
2008, Report
Mycobacteriosis is a bacterial disease in which striped bass (rockfish) may be disfigured as a result of skin ulcers and internal lesions. The bass may also be skinny or in extremely poor condition due to the chronic nature of this wasting disease. Stripers are a highly prized target species for...
Basin characteristics for selected streamflow-gaging stations in and near West Virginia
Katherine S. Paybins
2008, Open-File Report 2008-1087
Basin characteristics have long been used to develop equations describing streamflow. In the past, flow equations used in West Virginia were based on a few hand-calculated basin characteristics. More recently, the use of a Geographic Information System (GIS) to generate basin characteristics from existing datasets has refined the process for...
