Using landscape ecology to test hypotheses about large-scale abundance patterns in migratory birds
Curtis H. Flather, John R. Sauer
1996, Ecology (77) 28-35
The hypothesis that Neotropical migrant birds may be undergoing widespread declines due to land use activities on the breeding grounds has been examined primarily by synthesizing results from local studies. Growing concern for the cumulative influence of land use activities on ecological systems has heightened the need for large—scale studies...
Observations on the mass-extinction debates
William Glen
Graham Ryder, David E. Fastovsky, Stefan Gartner, editor(s)
1996, Book chapter, The Cretaceous-Tertiary event and other catastrophes in Earth history
No abstract available....
Communicating scientific findings to the general public
Stacy Hoppen, Keith C. Clarke, Leonard J. Gaydos, William Acevedo
1996, Conference Paper, International Conference/Workshop, 3rd, Santa Fe, N. Mex., 21–25 January 1996, Proceedings
The Human Induced Land Transformation project (HILT), part of the U.S. Geological Survey Global Change Research Program, has generated considerable public interest during the first two phases of the project: the data assembly and visualization phase carried out for the San Francisco Bay area; and the model building and calibration...
Tertiary extension and mineral deposits, southwestern U.S.
William A. Rehrig, James.J. Hardy
1996, Book
Starting in Las Vegas, we will traverse through many of the geometric elements and complexities of hanging wall deformation above the regional detachment systems of the Colorado River extensional terrane. We will study the interaction of normal faults as arranged in regional, crustal-scale mega-domains and the bounding structures that separate...
Design and documentation of a Baltimore-Washington regional spatial database testbed for environmental model calibration and verification
Timothy W. Foresman, Helen Wiggins, Dana Porter, Penny Masuoka, William Acevedo
1996, Conference Paper, Integrating GIS and Environmental Modeling, International Conference/Workshop, 3rd, Santa Fe, N. Mex., 21–25 January 1996, Proceedings
Recent efforts by scientists and managers to inventory, map, and model impacts of human activities on the environment have focused on land transformation and urbanization processes. To test the efficacy of any single model, algorithm or procedure which defines land transformation processes a standard database calibration reference resource is required....
Colloidal-facilitated transport of inorganic contaminants in ground water: part 1, sampling considerations
Robert W. Puls, James H. Eychaner, Robert M. Powell
1996, Book chapter, EPA environmental assessment sourcebook
Investigations at Pinal Creek, Arizona, evaluated routine sampling procedures for determination of aqueous inorganic geochemistry and assessment of contaminant transport by colloidal mobility. Sampling variables included pump type and flow rate, collection under air or nitrogen, and filter pore diameter. During well purging and sample collection, suspended particle size and...
Assessments and scientific basis for management options. Status of amphibians.
M.R. Jennings
1996, Book chapter, Sierra Nevada Ecosystem Project: Final report to Congress, Volume II
No abstract available....
Evidence for Mesoproterozoic basement in the Carolina terrane and speculations on its origin
Paul A. Mueller, Marianne Kozuch, Ann L. Heatherington, Joseph L. Wooden, Terry W. Offield, Robert P. Koeppen, Terry L. Klein, Allen P. Nutman
1996, Book chapter, Avalonian and related peri-Gondwanan terranes of the Circum-North Atlantic
No abstract available....
Potential‐field continuation: Past practice vs. modern methods
Jeffrey Phillips
1996, Conference Paper, SEG technical program expanded abstracts 1996
No abstract available....
Earthquakes and carbon dioxide beneath Mammoth Mountain, California
David P. Hill
1996, Seismological Research Letters (67) 8-15
No abstract available....
Lead exposure in Laysan albatross adults and chicks in Hawaii: Prevalence, risk factors, and biochemical effects
Thierry M. Work, M. R. Smith
1996, Archives of Environmental Contamination and Toxicology (31) 115-119
Prevalence of lead exposure and elevated tissue lead was determined in Laysan albatross (Diomedea immutabilis) in Hawaii. The relationship between lead exposure and proximity to buildings, between elevated blood lead and droopwing status, and elevated liver lead and presence of lead-containing paint chips in the proventriculus in albatross chicks was...
Solute transport along ground-water flows paths near the Nassau/Suffolk County border, Long Island, New York
P.E. Misut, C. J. Brown
1996, Book, Hydrology and hydrogeology of urban and urbanizing areas: a collection of papers presented at the conference held in Boston, Massachusetts, April 21-24, 1996
Interpreting the landscapes of Grand Teton and Yellowstone National Parks: recent and ongoing geology
John M. Good, Kenneth L. Pierce
1996, Book
Benthic processes in South San Francisco Bay: The role of organic inputs and bioturbation
J.M. Caffrey, Douglas E. Hammond, James S. Kuwabara, L.G. Miller, R.R. Twilley
J.T. Hollibaugh, editor(s)
1996, Book chapter, San Francisco Bay: The ecosystem
No abstract available....
Developing a temporal database of urban development for the Baltimore/Washington region
Janet S. Tilley, William Acevedo, Timothy W. Foresman, Walter Prince
1996, Conference Paper, ASPRS/ACSM Annual Convention and Exhibition, Baltimore, Md., 20–26 April 1996, Proceedings
The U.S. Geological Survey (USGS), the University of Maryland Baltimore County (UMBC), and the U.S. Bureau of the Census are working together as a multiagency, multidisciplinary team in developing a temporal database that documents the growth of the Baltimore-Washington metropolitan region. This database consists of urban development, principal transportation, shoreline,...
Methods and techniques for rigorous calibration of a cellular automaton model of urban growth
Keith C. Clarke, Stacy Hoppen, Leonard J. Gaydos
1996, Conference Paper, Third International Conference/Workshop on Integrating GIS and Environmental Modeling
Several lessons about the process of calibration were learned during development of a self-modifying cellular automaton model to predict urban growth. This model, part of a global change research project on human-induced land transformations, was used to predict the spatial extent of urban growth 100 years into the future. The...
Dimethylsulfoniopropionate as a potential methanogenic substrate in Mono Lake sediments
P.T. Visscher, J.R. Guidetti, Charles W. Culbertson, Ronald S. Oremland
1996, Book chapter, Biological and environmental chemistry of DMSP and related sulfonium compounds
A high concentration of dimethylsulfoniopropionate (DMSP) was found in the water column (0.1–1.8 µM particulate plus dissolved) of Mono Lake, CA, an alkaline, hypersaline waterbody. The dense Artemia monica population contained high levels of DMSP (1.7–2.5 mmol.g-1 wet weight), presumably as an osmolyte. Death of these brine shrimp caused accumulation of...
U.S. Geological Survey: credibility, impartiality, interpretive studies, relevant data, scientific excellence
Water Resources Division, U.S. Geological Survey
1996, Report
No abstract available....
A hypothesized Manson impact tsunami: Paleomagnetic and stratigraphic evidence in the Crow Creek Member, Pierre Shale
Maureen B. Steiner, Eugene Merle Shoemaker
Christian Koeberl, Raymond R. Anderson, editor(s)
1996, Book chapter, The Manson impact structure, Iowa: Anatomy of an impact crater
No abstract available....
Tests of detachment fault models using Miocene syntectonic strata, Colorado River extensional corridor, southeastern California and west-central Arizona
Kathi K. Beratan, Jane E. Nielson
1996, Book chapter, Reconstructing the history of basin and range extension using sedimentology and stratigraphy
No abstract available....
Microbial cycling of methyl bromide
Ronald S. Oremland
M.E. Lidstrom, F.R. Tabita, editor(s)
1996, Book chapter, Microbial growth on C1 compounds
Environmental concern about brominated halocarbons like methyl bromide (MeBr) is focused on their potential to destroy stratospheric ozone. Photocatalysis of MeBr and other halocarbons in the stratosphere results in the liberation of reactive CI and Br atoms. Because Br atoms are perhaps as much as 100-fold more efficient at attacking...
The supply and carbon content of suspended sediment from the Sacramento River to San Francisco Bay: Carbon and nitrogen concentrations and transports
Laurence E. Schemel, S. Hager, D. Childers
J.T. Hollibaugh, editor(s)
1996, Book chapter, San Francisco Bay: The ecosystem
No abstract available....
Investigation of methane production and consumption by use of stable isotopes
Kinga M. Revesz, Tyler B. Coplen, Mary Jo Baedecker, P. D. Glynn, M. F. Hult
1996, Book chapter, Isotopes in water resources management
No abstract available. ...
A history of the Water Resources Division, U.S. Geological Survey; Volume VI, May 1, 1957 to June 30, 1966; the years of change
Hugh H. Hudson, Joseph S. Cragwell Jr.
1996, Report
Luna B. Leopold became chief of the Water Resources Division in May 1957 and stepped down in January 1966 to resume his research'in geomorphology. Ernest L. Hendricks succeeded'Leopold as chief of the Division in May 1966. The dates May 1, 1957, and June 30,1966, bracket a period of profound change in the organization and programs and...
Level II scour analysis for Bridge 14 (FFIETH00010014) on Town Highway 1, crossing the Fairfield River, Fairfield, Vermont
Scott A. Olson
1996, Open-File Report 96-742
This report provides the results of a detailed Level II analysis of scour potential at structure FFIETH00010014 on Town Highway 1 crossing the Fairfield River, Fairfield, Vermont (figures 1–8). A Level II study is a basic engineering analysis of the site, including a quantitative analysis of stream stability and scour (U.S. Department of Transportation, 1993). Results of a...
