A Graphical-User Interface for the U.S. Geological Survey modular three-dimensional finite-difference ground-water flow model (MODFLOW-96) using Argus Numerical Environments
A.M. Shapiro, Joshua Margolin, Shahar Dolev, Yaacov Ben-Israel
1997, Open-File Report 97-121
619 ecosystem management projects
Thomas R. Stanley, Joel T. Heinen, James R. Strittholt, Philip M. Fearnside, Gillian Cooper-Driver
1997, Conservation Biology (11) 1037-1041
No abstract available....
Water-Quality Study of the Cheney Reservoir Watershed, South-Central Kansas
Larry M. Pope, Victoria G. Christensen
1997, Fact Sheet 104-97
Stream drainage areas in West Virginia
J.B. Wiley
1997, Fact Sheet 066-97
The U.S. Geological Survey recent highlights; innovative scientific information management
Water Resources Division, U.S. Geological Survey
1997, Fact Sheet 011-97
Status of ground-water resources at U.S. Navy Support Facility, Diego Garcia; summary of hydrologic and climatic data, January 1994 through December 1996
J.D. Torikai
1997, Open-File Report 97-114
Tectonic controls on magmatism and geothermal resources in the Geysers-Clear Lake region, California: Integration of new geologic, earthquake tomography, seismicity, gravity, and magnetotelluric data
W. D. Stanley, H.M. Benz, M. A. Walters, B. D. Rodriguez
1997, Open-File Report 97-95
No abstract available....
The use of stable carbon- and nitrogen-isotope data in quantifying cyanide loss from nine wastewaters
R. O. Rye, C. A. Johnson
1997, Open-File Report 97-82
Analytical results and comparative overview of geochemical studies conducted at the Holden mine, Spring 1996
J.E. Kilburn, S. J. Sutley
1997, Open-File Report 97-128
Presence and distribution of trace elements in streambed sediments, New Jersey
Anne K. O’Brien
1997, Fact Sheet 049-97
The National Water Quality Assessment (NAWQA) Program, developed by the U.S. Geological Survey (USGS), was implemented in 1991 to (1) provide a nationally consistent description of the status of surface- and ground-water quality in systems that represent a large part of the Nation's water resources, (2) determine water-quality trends, and...
Water-quality summary of the San Marcos Springs Riverine System, San Marcos, Texas, July-August 1994
R.N. Slattery, Lynne Fahlquist
1997, Fact Sheet 059-97
San Marcos Springs is the second largest spring in Texas and is the headwaters for the San Marcos River in San Marcos. Spring Lake (fig. 1) was built in 1848 at the site of a marsh formed by the springs to provide hydropower to a mill. The San Marcos River...
Alaska resource data file: Sleetmute quadrangle
W. J. Keith, Marti L. Miller
1997, Open-File Report 97-32
No abstract available....
Paleomagnetic and 40Ar/39Ar geochronologic data from late Proterozoic mafic dikes and sills, Montana and Wyoming
Stephen S. Harlan, John William Geissman, Lawrence W. Snee
1997, Professional Paper 1580
Paleomagnetic and 40Ar/39Ar results from mafic dikes and sills in northwestern Wyoming and western Montana yield similar virtual geomagnetic poles and isotopic dates. In combination with paleomagnetic and geochronologic data from elsewhere in the western Cordillera, these data provide evidence for a regional mafic magnetic event at 780 to 770...
Extensional reactivation of the Chocolate Mountains subduction thrust in the Gavilan Hills of southeastern California
F.R. Oyarzabal, C.E. Jacobson, Gordon B. Haxel
1997, Tectonics (16) 650-661
The NE vergent Chocolate Mountains fault of south-eastern California has been interpreted as either a subduction thrust responsible for burial and prograde metamorphism of the ensimatic Orocopia Schist or as a normal fault involved in the exhumation of the schist. Our detailed structural analysis in the Gavilan Hills area provides...
Woody debris decomposition in the Atchafalaya River Basin of Louisiana following hurricane disturbance
Michael D. Rice, B. Graeme Lockaby, J.A. Stanturf, Bobby D. Keeland
1997, Soil Science Society of America Journal (61) 1264-1274
The contribution of woody debris to some biogeochemical functions of forested wetlands was examined in the Atchafalaya River Basin in Louisiana following disturbance by Hurricane Andrew. Woody debris decomposition processes were characterized in terms of mass, C, N, and P dynamics. These were compared between different diameters of debris, areas...
Carrying capacity of seagrass beds predicted for redheads wintering in Chandeleur Sound, Louisiana, USA
Thomas C. Michot
1997, Conference Paper, Effect of habitat loss and change on waterbirds
No abstract available....
Proterozoic sequences and their implications for Precambrian and Cambrian geologic evolution of western Kentucky: Evidence from seismic-reflection data
James A. Drahovzal
1997, Seismological Research Letters (68) 553-566
Analyses of two seismic-reflection lines in western Kentucky indicate the presence of two Proterozoic, unconformity-bounded sequences. One is autochthonous and of probable Late Proterozoic age; the other is allochthonous and of probable Middle Proterozoic age. Reflector patterns and apparent relationships to similar sequences elsewhere in the region suggest that the...
Evidence of Newell's Shearwater breeding in Puna District, Hawaii
Michelle H. Reynolds, George L. Ritchotte
1997, Journal of Field Ornithology (68) 26-32
Nocturnal surveys using auditory cues and night-vision equipment were conducted during the seabird breeding season in 1993 to determine use of inland areas in the Puna District, Hawaii by Newell's Shearwater (Puffinus auricularus newelli). Two hundred sixty Newell's Shearwater auditory or visual detections were made during 275 survey hours from...
Movement and behavior of radio-tagged juvenile spring and fall Chinook salmon in the Dalles and John Day dam forebays, 1995
Mindi B. Sheer, Carl B. Schreck, Glen S. Holmberg, Rip S. Shively, Hal C. Hansel, Theresa L. Martinelli, T.P. King, C.N. Frost, T.P. Poe
1997, Report
No abstract available....
Kauai's endangered solitaires: Update on population status and distribution 1996
Michelle H. Reynolds, Thomas J. Snetsinger, Christina M. Herrmann
1997, Transactions of the Western Section of the Wildlife Society (33) 49-55
The puaioihi (Myadestes palmeri) and the kamao (M. myadestinus) are endangered solitaires endemic to Kauai in the Hawaiian Islands and now restricted to the Alakai Swamp. The puaiohi has been rare historically with population estimates declining since the first population surveys 1968-73. Puaiohi were believed to be on the verge...
Introduced species: A significant component of human-caused global change
Peter M. Vitousek, Carla M. D'Antonio, Lloyd L. Loope, Marcel Rejmanek, Randy G. Westbrooks
1997, New Zealand Journal of Ecology (21) 1-16
Biological invasions are a widespread and significant component of human-caused global environmental change. The extent of invasions of oceanic islands, and their consequences for native biological diversity, have long been recognized. However, invasions of continental regions also are substantial. For example, more than 2,000 species of alien plants are established...
Composition of the crust in the Grenville and Appalachian Provinces of North America inferred from VP/VS ratios
G. Musacchio, Walter D. Mooney, James H. Luetgert, Nikolas I. Christensen
1997, Journal of Geophysical Research B: Solid Earth (102) 15225-15241
We use the ratios between P and S wave velocities (VP/VS), derived from seismic refraction data, to infer the composition of the crust in the Grenville and the Appalachian Provinces of North America. The crust exhibits VP/VS increasing with depth from 1.64 to 1.84; there is a clear distinction between the Grenville...
Status, ecology, and management of the invasive plant, Miconia calvescens DC (Melastomataceae) in the Hawaiian islands
Arthur C. Medieros, Lloyd L. Loope, P. Conant, S. McElvaney
1997, Bishop Museum Occasional Papers (48) 23-36
Miconia calvescens (Melastomataceae), native to montane forests of the neotropics, has now invaded wet forests of both the Society and Hawaiian Islands. This tree, which grows up to 15 m tall, is potentially the most invasive and damaging weed of rainforests of Pacific islands. In moist conditions, it grows rapidly,...
USGS Wildland Fire Workshop, EROS Data Center, Sioux Falls, SD, July 9-10, 1997
S. G. Coloff, J. Findley, Rosalind L. Helz
1997, Report
Report on the first workshop on USGS wildland fire expertise and capabilities. The workshop brought together operationaland research representatives ofthe Federal fire management agencies to initiate a more comprehensive assessmentofthe USGS's capabilities and the appropriate role(s) for USGS interaction and involvement with the fire community. Thereport discusses how the USGS...
1994 annual status report: a summary of fish data in six reaches of the upper Mississippi River system
Steve Gutreuter, Randy W. Burkhardt, Mark Stopyro, Andrew Bartels, Eric Kramer, Melvin C. Bowler, Frederick A. Cronin, Dirk W. Soergel, Michael D. Petersen, David P. Herzog, Paul T. Raibley, Kevin S. Irons, Timothy M. O’Hara
1997, Long Term Resource Monitoring Program 97-P007
The Long Term Resource Monitoring Program (LTRMP) completed 2,653 collections of fishes from stratified random and permanently fixed sampling locations in six study reaches of the Upper Mississippi River System during 1994. Collection methods included day and night electrofishing, hoop netting, fyke netting (two net sizes), gill netting, seining,...