Nonlinear dynamics in ecosystem response to climatic change: Case studies and policy implications
Virginia R. Burkett, Douglas A. Wilcox, Robert Stottlemyer, Wylie Barrow, Dan Fagre, Jill Baron, Jeff Price, Jennifer L. Nielsen, Craig D. Allen, David L. Peterson, Greg Ruggerone, Thomas Doyle
2005, Ecological Complexity (2) 357-394
Many biological, hydrological, and geological processes are interactively linked in ecosystems. These ecological phenomena normally vary within bounded ranges, but rapid, nonlinear changes to markedly different conditions can be triggered by even small differences if threshold values are exceeded. Intrinsic and extrinsic ecological thresholds can lead to effects that cascade...
Sources of variability of evapotranspiration in California
H.G. Hidalgo, D.R. Cayan, M. D. Dettinger
2005, Journal of Hydrometeorology (6) 3-19
The variability (1990–2002) of potential evapotranspiration estimates (ETo) and related meteorological variables from a set of stations from the California Irrigation Management System (CIMIS) is studied. Data from the National Climatic Data Center (NCDC) and from the Department of Energy from 1950 to 2001 were used to...
Evaluating water management strategies with the Systems Impact Assessment Model: SIAM version 4
John M. Bartholow, John Heasley, Blair Hanna, Jeff Sandelin, Marshall Flug, Sharon Campbell, Jim Henriksen, Aaron Douglas
2005, Open-File Report 2003-82
Water from many of California's coastal rivers has been used for a wide variety of development ventures, including major agricultural diversions, hydropower generation, and contaminant assimilation from industry, agriculture and logging. Anthropogenic impacts often degrade water quality and decrease the quantity and quality of aquatic habitat. Reallocating streamflow away from...
The microbiol ecology and physiology of aryl dehalogenation reactions and implications for bioremediation
J.M. Suflita, G.T. Townsend
L. Young, C. Cerniglia, editor(s)
2005, Book chapter, Microbial transformation and degradation of toxic organic chemicals
No abstract available. ...
Water quality in Big Cypress National Preserve and Everglades National Park — Trends and spatial characteristics of selected constituents
Ronald L. Miller, Benjamin F. McPherson, Robert Sobczak, Christine Clark
2004, Water-Resources Investigations Report 2003-4249
Seasonal changes in water levels and flows in Big Cypress National Preserve (BICY) and Everglades National Park (EVER) affect water quality. As water levels and flows decline during the dry season, physical, geochemical and biological processes increase the breakdown of organic materials and the build-up of organic waste, nutrients, and...
Surface-Water and Ground-Water Interactions in the Central Everglades, Florida
Judson W. Harvey, Jessica T. Newlin, James M. Krest, Jungyill Choi, Eric A. Nemeth, Steven L. Krupa
2004, Scientific Investigations Report 2004-5069
Recharge and discharge are hydrological processes that cause Everglades surface water to be exchanged for subsurface water in the peat soil and the underlying sand and limestone aquifer. These interactions are thought to be important to water budgets, water quality, and ecology in the Everglades. Nonetheless, relatively few studies of...
Physical habitat dynamics in four side-channel chutes, lower Missouri River
Robert B. Jacobson, Harold E. Johnson, Mark S. Laustrup, Gary J. D’Urso, Joanna M. Reuter
2004, Open-File Report 2004-1071
Construction of the side-channel chutes has become a popular means to rehabilitate habitate of the Lower Missouri River. We studied various aspects of hydrology, hydraulics, and geomorphology of four side-channel chutes to document a range of existing conditions in the Lower Missouri River. The Cranberry Bend side-channel chute has existed...
Application of cross-borehole radar to monitor fieldscale vegetable old injection experiments for biostimulation
John W. Lane Jr., Frederick D. Day-Lewis, Roelof J. Versteeg, C.C. Casey, Peter K. Joesten
2004, Conference Paper, Proceedings: Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP)
Cross-borehole radar methods were used to monitor a field-scale biostimulation pilot project at the Anoka County Riverfront Park (ACP), located downgradient of the Naval Industrial Reserve Ordnance Plant, in Fridley, Minnesota. The goal of the pilot project is to evaluate biostimulation using emulsified vegetable oil to treat ground water...
Use of borehole radar methods and borehole geophysical logs to monitor a field-scale vegetable oil biostimulation pilot project at Fridley, Minnesota
John W. Lane Jr., Clifton C. Casey, Frederick D. Day-Lewis, A. Witten, Roelof J. Versteeg
2004, Conference Paper, Proceedings of the Fourth International Conference on Remediation of Chlorinated and Recalcitrant Compounds
Cross-hole and surface-to-borehole radar and conventional borehole geophysical logs were used to monitor subsurface injections of vegetable oil emulsion conducted as part of a field-scale biostimulation pilot project at the Anoka County Riverfront Park (ACP), located downgradient of the Naval Industrial Reserve Ordnance Plant (NIROP), in Fridley, Minnesota. The pilot...
Scientific advances provide opportunities to improve pediatric environmental health
Michael M. Reddy, Micaela B. Reddy, Carol F. Reddy
2004, Journal of Pediatrics (145) 153-156
The health consequences of contaminants in the environment, with respect to the health of children and infants, recently have been dramatically brought to public attention by the motion pictures Erin Brockovich and A Civil Action. These productions focused public attention on the potential link between water contaminants and pediatric health,...
Climate change, growing season length, and transpiration: Plant response could alter hydrologic regime
Thomas G. Huntington
2004, Plant Biology (6) 651-653
No abstract available...
Herpetofaunal inventories of the National Parks of South Florida and the Caribbean: Volume I. Everglades National Park
Kenneth G. Rice, J. Hardin Waddle, Marquette E. Crockett, Brian M. Jeffery, H. Frankin Percival
2004, Open-File Report 2004-1065
Amphibian declines and extinctions have been documented around the world, often in protected natural areas. Concern for this alarming trend has prompted the U.S. Geological Survey and the National Park Service to document all species of amphibians that occur within U.S. National Parks and to search for any signs that...
Nutrient controls on biocomplexity of mangrove ecosystems
Karen L. McKee
2004, Fact Sheet 2004-3124
Mangrove forests are important coastal ecosystems that provide a variety of ecological and societal services. These intertidal, tree-dominated communities along tropical coastlines are often described as “simple systems,” compared to other tropical forests with larger numbers of plant species and multiple understory strata; however, mangrove ecosystems have complex trophic structures,...
SUTRA-MS: A version of SUTRA modified to simulate heat and multiple-solute transport
Hughes, D. Joseph, Ward E. Sanford
2004, Open-File Report 2004-1207
No abstract available....
Anthropogenic and natural variation in ridge and slough pollen assemblages
C.E. Bernhardt, Debra A. Willard, M. Marot, C. W. Holmes
2004, Open-File Report 2004-1448
We present pollen evidence documenting the response of sawgrass ridge and slough systems of the Florida Everglades to hydrologic changes during the last 3,500 years. Sediment cores and surface samples were collected in three transects across sawgrass ridges and sloughs in Water Conservation Area 3A to determine the age of...
Effects of Abandoned Coal-Mine Drainage on Streamflow and Water Quality in the Mahanoy Creek Basin, Schuylkill, Columbia, and Northumberland Counties, Pennsylvania, 2001
Charles A. Cravotta III,
2004, Scientific Investigations Report 2004-5291
This report assesses the contaminant loading, effects to receiving streams, and possible remedial alternatives for abandoned mine drainage (AMD) within the Mahanoy Creek Basin in east-central Pennsylvania. The Mahanoy Creek Basin encompasses an area of 157 square miles (407 square kilometers) including approximately 42 square miles (109 square kilometers) underlain...
Quantification of Hydrologic Processes and Assessment of Rainfall-Runoff Models in Miami-Dade County, Florida
David A. Chin, Raul D. Patterson
2004, Scientific Investigations Report 2004-5191
Chloroethene biodegradation potential, ADOT/PF Peger Road Maintenance Facility, Fairbanks, Alaska
Paul M. Bradley, Frances H. Chapelle
2004, Open-File Report 2004-1428
A series of 14C-radiotracer-based microcosm experiments were conducted to assess: 1) the extent, rate and products of microbial dechlorination of trichloroethene (TCE), cis-dichloroethene (cis-DCE) and vinyl chloride (VC) in sediments at the Peger Road site; 2) the effect of three electron donor amendments (molasses, shrimp and crab chitin, and 'Hydrogen...
Chloroethene biodegradation potential in the "lower" contaminant plume, River Terrace RV Park, Soldotna, Alaska
Paul M. Bradley, Frances H. Chapelle
2004, Open-File Report 2004-1427
No abstract available....
Collection, analysis, and age-dating of sediment cores from 56 U.S. lakes and reservoirs sampled by the U.S. Geological Survey, 1992-2001
Peter Van Metre, Jennifer T. Wilson, Christopher C. Fuller, Edward Callender, Barbara Mahler
2004, Scientific Investigations Report 2004-5184
The U.S. Geological Survey Reconstructed Trends National Synthesis study collected sediment cores from 56 lakes and reservoirs between 1992 and 2001 across the United States. Most of the sampling was conducted as part of the National Water-Quality Assessment (NAWQA) Program. The primary objective of the study was to determine trends...
Hydrology of the unconfined Kirkwood-Cohansey aquifer system, Forked River and Cedar, Oyster, Mill, Westecunk, and Tuckerton Creek Basins and adjacent basins in the southern Ocean County area, New Jersey, 1998-99
Alison D. Gordon
2004, Water-Resources Investigations Report 2003-4337
An autonomous, electromagnetic seepage meter to study coastal groundwater/surface-water exchange
Peter W. Swarzenski, Matt Charette, Christian D. Langevin
2004, Open-File Report 2004-1369
The bi-directional exchange of groundwater with coastal surface waters may influence not only coastal-water and geochemical budgets, but may also impact and direct coastal ecosystem change. For example, the widespread discharge of nutrient-enriched submarine groundwater into an estuary or lagoon may contribute directly to the onset and duration of eutrophication,...
Hydrogeology and simulation of regional ground-water-level declines in Monroe County, Michigan
Howard W. Reeves, Kirsten V. Wright, J.R. Nicholas
2004, Water-Resources Investigations Report 2003-4312
Observed ground-water-level declines from 1991 to 2003 in northern Monroe County, Michigan, are consistent with increased ground-water demands in the region. In 1991, the estimated ground-water use in the county was 20 million gallons per day, and 80 percent of this total was from quarry dewatering. In 2001, the estimated...
Estimating flood-peak discharge magnitudes and frequencies for rural streams in Illinois
David T. Soong, Audrey L. Ishii, Jennifer B. Sharpe, Charles F. Avery
2004, Scientific Investigations Report 2004-5103
Flood-peak discharge magnitudes and frequencies at streamflow-gaging sites were developed with the annual maximum series (AMS) and the partial duration series (PDS) in this study. Regional equations for both flood series were developed for estimating flood-peak discharge magnitudes at specified recurrence intervals of rural Illinois streams. The regional equations are techniques for estimating...
Hydrologic, soil, and vegetation gradients in remnant and constructed riparian wetlands in west-central Missouri, 2001-04
David C. Heimann, Paige A. Mettler-Cherry
2004, Scientific Investigations Report 2004-5216
A study was conducted by the U.S. Geological Survey in cooperation with the Missouri Department of Conservation at the Four Rivers Conservation Area (west-central Missouri), between January 2001 and March 2004, to examine the relations between environmental factors (hydrology, soils, elevation, and landform type) and the spatial distribution of vegetation...
