Effects of nutrient loading and extreme rainfall events on coastal tallgrass prairies: Invasion intensity, vegetation responses, and carbon and nitrogen distribution
E. Siemann, W.E. Rogers, James B. Grace
2007, Global Change Biology (13) 2184-2192
Soil fertility and precipitation are major factors regulating transitions from grasslands to forests. Biotic regulation may influence the effects of these abiotic drivers. In this study, we examined the effects of extreme rainfall events, anthropogenic nutrient loading and insect herbivory on the ability of Chinese tallow tree (Sapium sebiferum) to...
Analysis of salinity intrusion in the Waccamaw River and Atlantic Intracoastal Waterway near Myrtle Beach, South Carolina, 1995-2002
Paul Conrads, Edwin A. Roehl Jr.
2007, Scientific Investigations Report 2007-5110
Six reservoirs in North Carolina discharge into the Pee Dee River, which flows 160 miles through South Carolina to the coastal communities near Myrtle Beach, South Carolina. During the Southeast's record-breaking drought from 1998 to 2003, salinity intrusions inundated a coastal municipal freshwater intake, limiting water supplies. To evaluate the...
Summary of the Ground-Water-Level Hydrologic Conditions in New Jersey 2006
Walter Jones, Daryll Pope
2007, Fact Sheet 2007-3049
Ground water is one of the Nation's most important natural resources. It provides about 40 percent of our Nation's public water supply. Currently, nearly one-half of New Jersey's drinking-water is supplied by over 300,000 wells that serve more than 4.3 million people (John P. Nawyn, U.S. Geological Survey, written commun.,...
Geochemistry of Selected Coal Samples from Sumatra, Kalimantan, Sulawesi, and Papua, Indonesia
Harvey E. Belkin, Susan J. Tewalt
2007, Open-File Report 2007-1202
Introduction Indonesia is an archipelago of more than 17,000 islands that stretches astride the equator for about 5,200 km in southeast Asia (figure 1) and includes major Cenozoic volcano-plutonic arcs, active volcanoes, and various related onshore and offshore basins. These magmatic arcs have extensive Cu and Au mineralization that has generated...
Using a remote sensing/GIS model to predict southwestern Willow Flycatcher breeding habitat along the Rio Grande, New Mexico
James R. Hatten, Mark K. Sogge
2007, Open-File Report 2007-1207
Introduction The Southwestern Willow Flycatcher (Empidonax traillii extimus; hereafter SWFL) is a federally endangered bird (USFWS 1995) that breeds in riparian areas in portions of New Mexico, Arizona, southwestern Colorado, extreme southern Utah and Nevada, and southern California (USFWS 2002). Across this range, it uses a variety of plant species as...
The Distribution of Submersed Aquatic Vegetation in the Fresh and Oligohaline Tidal Potomac River, 2004
Nancy B. Rybicki, Sarah N. Yoon, Edward R. Schenk, Julie B. Baldizar
2007, Open-File Report 2007-1198
Introduction Submersed aquatic vegetation (SAV) is a critical component of the Potomac River ecosystem. Though SAV provides important habitat for fauna and stabilizes bottom sediment, very dense beds may restrict recreational and commercial navigation. Exotic species of SAV are managed by the Metropolitan Washington Council of Governments Potomac Aquatic Plant Management...
Selenium and other elements in water and adjacent rock and sediment of Toll Gate Creek, Aurora, Arapahoe County, Colorado, December 2003 through March 2004
J. R. Herring, Katherine Walton-Day
2007, Scientific Investigations Report 2007-5018
Streamwater and solid samples (rock, unconsolidated sediment, stream sediment, and efflorescent material) in the Toll Gate Creek watershed, Colorado, were collected and analyzed for major and trace elements to determine trace-element concentrations and stream loads from December 2003 through March 2004, a period of seasonally low flow. Special emphasis was...
Nearshore circulation and water-column properties in the Skagit River Delta, northern Puget Sound, Washington: Juvenile Chinook Salmon habitat availability in the Swinomish Channel
Eric E. Grossman, Andrew W. Stevens, Guy Gelfenbaum, Christopher Curran
2007, Scientific Investigations Report 2007-5120
Time-series and spatial measurements of nearshore hydrodynamic processes and water properties were made in the Swinomish Channel to quantify the net direction and rates of surface water transport that influence habitat for juvenile Chinook salmon along their primary migratory corridor between the Skagit River and Padilla Bay in northern Puget...
Assessment of biological conditions at selected stream sites in Johnson County, Kansas, and Cass and Jackson Counties, Missouri, 2003 and 2004
Barry C. Poulton, Teresa J. Rasmussen, Casey J. Lee
2007, Scientific Investigations Report 2007-5108
Macroinvertebrate samples were collected at 15 stream sites representing 11 different watersheds in Johnson County, Kansas, in 2003 and 2004 to assess biological conditions in streams and relations to environmental variables. Published data from an additional seven stream sites, one in Johnson County, Kansas, and six others in adjacent Cass...
Thermal properties of methane gas hydrates
William F. Waite
2007, Fact Sheet 2007-3041
Gas hydrates are crystalline solids in which molecules of a “guest” species occupy and stabilize cages formed by water molecules. Similar to ice in appearance (fig. 1), gas hydrates are stable at high pressures and temperatures above freezing (0°C). Methane is the most common naturally occurring hydrate guest species. Methane...
A conceptual life-history model for pallid and shovelnose sturgeon
Mark L. Wildhaber, Aaron J. DeLonay, Diana M. Papoulias, David L. Galat, Robert B. Jacobson, Darin G. Simpkins, P. J. Braaten, Carl E. Korschgen, Michael J. Mac
2007, Circular 1315
Intensive management of the Missouri and Mississippi Rivers has resulted in dramatic physical changes to these rivers. These changes have been implicated as causative agents in the decline of pallid sturgeon. The pallid sturgeon, federally listed as endangered, is endemic to the turbid waters of the Missouri River and the...
Biological conditions in streams of Johnson County, Kansas, and nearby Missouri, 2003 and 2004
Barry C. Poulton, Teresa J. Rasmussen, Casey J. Lee
2007, Fact Sheet 2007-3044
Johnson County is one of the fastest growing and most populated counties in Kansas. Urban development affects streams by altering stream hydrology, geomorphology, water chemistry, and habitat, which then can lead to adverse effects on fish and macroinvertebrate communities. In addition, increasing sources of contaminants in urbanizing streams results in...
Section 4. The GIS Weasel User's Manual
Roland J. Viger, George H. Leavesley
2007, Techniques and Methods 6-B4
INTRODUCTION The GIS Weasel was designed to aid in the preparation of spatial information for input to lumped and distributed parameter hydrologic or other environmental models. The GIS Weasel provides geographic information system (GIS) tools to help create maps of geographic features relevant to a user's model and to generate parameters...
Postfledging survival of Laysan ducks
Michelle H. Reynolds, John J. Citta
2007, Journal of Wildlife Management (71) 383-388
Precise and unbiased estimates of demographic parameters are necessary for effective population monitoring and to parameterize population models (e.g., population viability analyses). This is especially important for endangered species, where recovery planning and managers' decisions can influence species persistence. In this study, we used mark–recapture methods to estimate survival of...
Research activities at U.S. Government agencies in subsurface reactive transport modeling
Randall T. Cygan, Caroline T. Stevens, Robert W. Puls, Steven B. Yabusaki, Robert D. Wauchope, Christian J. McGrath, Gary P. Curtis, Malcolm D. Siegel, Linda A. Veblen, David R. Turner
2007, Vadose Zone Journal (6) 805-822
The fate of contaminants in the environment is controlled by both chemical reactions and transport phenomena in the subsurface. Our ability to understand the significance of these processes over time requires an accurate conceptual model that incorporates the various mechanisms of coupled chemical and physical processes....
Effects of Historical Coal Mining and Drainage from Abandoned Mines on Streamflow and Water Quality in Newport and Nanticoke Creeks, Luzerne County, Pennsylvania, 1999-2000
Jeffrey J. Chaplin, Charles A. Cravotta III,, Jeffrey B. Weitzel, Kenneth M. Klemow
2007, Scientific Investigations Report 2007-5061
This report characterizes the effects of historical mining and abandoned mine drainage (AMD) on streamflow and water quality and evaluates potential strategies for AMD abatement in the 14-square-mile Newport Creek Basin and 7.6-square-mile Nanticoke Creek Basin. Both basins are mostly within the Northern Anthracite Coal Field and drain to the...
Reproductive physiology of Missouri River gravid pallid sturgeon and shovelnose sturgeon during the 2005 and 2006 spawning seasons: Chapter C in Factors affecting the reproduction, recruitment, habitat, and population dynamics of pallid sturgeon and shovelnose sturgeon in the Missouri River
Diana M. Papoulias, Mandy L. Annis, Aaron J. DeLonay, Donald E. Tillitt
2007, Open-File Report 2007-1262-C
In a natural, unaltered river, the location and timing of sturgeon spawning will be dictated by the prevailing environmental conditions to which the sturgeon have adapted. A goal of the Comprehensive Sturgeon Research Program (CSRP; see chap. A) at the U.S. Geological Survey Columbia Environmental Research Center is to identify...
Estimating soil erosion using the USPED model and consecutive remotely sensed land cover observations
Jinxun Liu, Shuguang Liu, Larry L. Tieszen, Mingshi Chen
2007, Conference Paper, SCSC '07: Proceedings of the 2007 summer computer simulation conference
Intensified soil erosion contributes to the degradation of ecosystems. Better estimation of soil erosion across landscapes is a necessary part of understanding ecosystem biogeochemical cycles and ecosystem sustainability. In this study, we used the Unit Stream Power-based Erosion Deposition (USPED) model to estimate the lateral movement of soils across Fort...
Optimization of an ecosystem model through the assimilation of eddy flux observations using a smoothed ensemble Kalman filter
M. Chen, S. Liu, L. Tieszen
2007, Conference Paper
The parameters of ecosystem models are conventionally optimized through nonsequential inversion methods, which treat observations as a whole and lack the flexibility to investigate possible temporal evolution of the model parameters. This research developed a smoothed ensemble Kalman filter (SEnKF) to assess to what extent the parameters and state variables...
Mercury in precipitation in Indiana, January 2001–December 2003
Martin R. Risch
2007, Scientific Investigations Report 2007-5063
Mercury in precipitation was monitored during 2001 through 2003 at four locations in Indiana as part of the National Atmospheric Deposition Program-Mercury Deposition Network (NADP-MDN). Monitoring stations were operated at Roush Lake near Huntington, Clifty Falls State Park near Madison, Monroe County Regional Airport near Bloomington, and Indiana Dunes National...
Results from Coalbed Methane Drilling in Winn Parish, Louisiana
Paul C. Hackley, Peter D. Warwick, F. Clayton Breland Jr., Troy E. Richard, Kirk Ross
2007, Open-File Report 2007-1061
A coalbed methane (CBM) well in Winn Parish, Louisiana, named CZ Fee A No. 114, was drilled by Vintage Petroleum, Inc., in January 2004. The CZ Fee A No. 114 CBM well was drilled to a total depth of 3,114 ft and perforated at 2,730-2,734 ft in a Wilcox Group...
Minerales en nuestro ambiente
Dave G. Frank, John P. Galloway, Susan Garcia, Judy Weathers
2007, Open-File Report 2007-1185
No abstract available....
Water-Quality Constituents, Dissolved-Organic-Carbon Fractions, and Disinfection By-Product Formation in Water from Community Water-Supply Wells in New Jersey, 1998-99
Jessica A. Hopple, Julia L. Barringer, Janece Koleis
2007, Scientific Investigations Report 2006-5260
Water samples were collected from 20 community water-supply wells in New Jersey to assess the chemical quality of the water before and after chlorination, to characterize the types of organic carbon present, and to determine the disinfection by-product formation potential. Water from the selected wells previously had been shown to...
Water-level altitudes 2007 and water-level changes in the Chicot, Evangeline, and Jasper aquifers and compaction 1973-2006 in the Chicot and Evangeline aquifers, Houston-Galveston region, Texas
Mark C. Kasmarek, Natalie A. Houston
2007, Scientific Investigations Map 2968
This report, done in cooperation with the Harris-Galveston Subsidence District, the City of Houston, the Fort Bend Subsidence District, and the Lone Star Groundwater Conservation District, is one in an annual series of reports that depicts water-level altitudes and water-level changes in the Chicot, Evangeline, and Jasper aquifers, and compaction...
Characterization of stormflows and wastewater treatment-plant effluent discharges on water quality, suspended sediment, and stream morphology for Fountain and Monument Creek watersheds, Colorado, 1981-2006
David P. Mau, Stogner, Patrick Edelmann
2007, Scientific Investigations Report 2007-5104
In 1998, the U.S. Geological Survey, in cooperation with Colorado Springs City Engineering, began a study of the Fountain and Monument Creek watersheds to characterize water quality and suspended-sediment conditions in the watershed for different flow regimes, with an emphasis on characterizing water quality during storm runoff. Water-quality and...
