Seasonal variation in habitat use by marsh fishes
F. Jordan, K. J. Babbitt, C. C. McIvor
1998, Ecology of Freshwater Fish (7) 159-166
We used I-m2 throw traps to examine habitat use by smallsized fishes within a mosaic of wet prairies and sloughs in the headwaters of the St. Johns River, Florida between August 1992 and November 1995. Estimates of total fish density and biomass varied temporally, but did not differ significantly between...
Comment on "New evidence of magmatic diapirs in the intermediate crust under the Dead Sea, Israel" by Nitzan Rabinowitz, Jean Steinberg, and Yossi Mart
A. Hofstetter, M. Rybakov, Uri S. ten Brink
1998, Tectonics (17) 819-820
No abstract available....
Nitrate contamination of the upper aquifer in the Manatí-Vega Baja area, Puerto Rico
Carlos Conde-Costas, Fernando Gomez-Gomez
1998, Conference Paper, Proceedings of the Third International Symposium on Water Resources, Fifth Caribbean Islands Water Resources Congress
Suppression of large earthquakes by stress shadows: A comparison of Coulomb and rate-and-state failure
Ruth A. Harris, Robert W. Simpson
1998, Journal of Geophysical Research Solid Earth (103) 24439-24451
Stress shadows generated by California's two most recent great earthquakes (1857 Fort Tejon and 1906 San Francisco) substantially modified 19th and 20th century earthquake history in the Los Angeles basin and in the San Francisco Bay area. Simple Coulomb failure calculations, which assume that earthquakes can be modeled as static...
Environmental impacts on the southern Florida coastal waters: A history of change in Florida Bay
G. Lynn Wingard, S. E. Ishman, C. W. Holmes
1998, Journal of Coastal Research (26) 162-172
Analyses of four cores located in the northern transitional, eastern, and central portions of Florida Bay reveal historical patterns of change in salinity and seagrass distribution. Salinity and the distribution of seagrass beds are two critical issues for the restoration of Florida Bay. The distribution of benthic fauna in Bob...
Collaborative research with GEO-HAZ Consulting, Inc., and U.S. Geological Survey: interaction of volcanic and tectonic processes in the past 40,000 years near Long Valley Caldera
James P. McCalpin, Margaret E. Berry, Andre M. Sarna-Wojcicki
1998, Report
Estimation of temporal variability of survival in animal populations
William R. Gould, James D. Nichols
1998, Ecology (79) 2531-2538
Temporal variation of demographic characteristics for animal populations is of interest to both ecologists and biological modelers. The standard deviation of a series of estimated parameter values (e.g., estimated population size) or some function thereof (e.g., log of the estimated parameters) is commonly used as a measure of temporal variability....
Dietary protein and chlorogenic acid effect on baculoviral disease of noctuid (Lepidoptera: noctuidae) larvae
Kelli Hoover, Susan A. Alaniz, Julie L. Yee, David M. Rocke, Bruce Hammock, Sean Duffey
1998, Environmental Entomology (27) 1264-1272
Insecticidal pathogens such as baculoviruses are currently under intensive development as biorational agents for the control of lepidopteran pests. However, because the efficacy of these orally infective viruses is influenced by host diet, our ability to use baculoviruses effectively in an integrated pest management program requires understanding the influence of...
Preliminary evaluation of a simple in vitro test for the diagnosis of type C botulism in wild birds
Tonie E. Rocke, Susan Smith, Sean Nashold
1998, Journal of Wildlife Diseases (34) 744-751
An enzyme-linked immunosorbent assay (ELISA) was developed for the detection of type C botulinum toxin (Clostridium botulinum) in wild birds. This simple, antigen-capture ELISA utilizes polystyrene immunosticks as the solid substrate, chicken antitoxin (IgY) as the coating antibody, rabbit antitoxin as the primary antibody, and peroxidase-labeled goat-anti-rabbit as the...
Conspecific reproductive success and breeding habitat selection: Implications for the study of coloniality
Etienne Danchin, T. Boulinier, M. Massot
1998, Ecology (79) 2415-2428
Habitat selection is a crucial process in the life cycle of animals because it can affect most components of fitness. It has been proposed that some animals cue on the reproductive success of conspecifics to select breeding habitats. We tested this hypothesis with demographic and behavioral data from a 17-yr...
Compilation of 29 sonic and density logs from 23 oil test wells in western Washington State
Thomas M. Brocher, April L. Ruebel
1998, Open-File Report 98-249
Three-dimensional velocity models for Puget Sound provide a means for better understanding the lateral variations in strong ground motions recorded during local earthquakes in Puget Lowland. We have compiled 29 sonic and density logs from 23 oil test wells to help us determine the geometry and physical properties of the...
Distribution, migratory behavior, and habitat use of razorback sucker (Xyrauchen texanus) in Lake Mohave, Arizona-Nevada
Gordon Mueller, Paul Marsh, G.W. Knowles
1998, Open-File Report 98-252
Digital bedrock geologic map of the Mount Carmel 7.5 x 15 minute quadrangle, Vermont
Nicholas M. Ratcliffe, Gregory J. Walsh
1998, Open-File Report 98-330-B
No abstract available....
Attacks on sea otters by killer whales
Brian B. Hatfield, Dennis Marks, M. Tim Tinker, Kellie Nolan, Joshua Peirce
1998, Marine Mammal Science (14) 888-894
Few references to attacks on sea otters, Enhydra lutris, by killer whales, Orcinus orca, exist in the literature. In an extensive review of predatory and non-predatory interactions between killer whales and other marine mammals, Jefferson et al. (1991) cited only one reference (Nikolaev 1965) in which killer whales aggressively pursued...
Hydrologic investigation of the Ophir Creek watershed near Yakutat, Alaska
Edward G. Neal
1998, Open-File Report 98-199
Data on streamflow and ground-water levels were collected in the Ophir Creek watershed in southeast Alaska to obtain information about the relations between streamflow, ground-water levels, and precipitation. In addition, the possible effect of an experimental channel excavation to increase flows in Ophir Creek was evaluated. Stream discharges were monitored...
Post-stocking dispersal, habitat use, and behavioral acclimation of juvenile razorback suckers (Xyrauchen texanus) in two Colorado River reservoirs
Gordon Mueller, Paul Marsh
1998, Open-File Report 98-301
Resistivity of Lake Valley Fault from audiomagnetotelluric measurements, Sierra County, southern New Mexico
D. P. Klein, R. A. Wise
1998, Open-File Report 98-334
Water-quality assessment of part of the upper Mississippi River basin, Minnesota and Wisconsin— Ground-water quality in an urban part of the Twin Cities Metropolitan area, Minnesota, 1996
W. J. Andrews, A. L. Fong, Leigh Harrod, M. E. Dittes
1998, Water-Resources Investigations Report 97-4248
In the spring of 1996, the Upper Mississippi River Basin Study Unit of the National Water-Quality Assessment Program drilled 30 shallow monitoring wells in a study area characterized by urban residential and commercial land uses. The monitoring wells were installed in sandy river-terrace deposits adjacent to the Mississippi River in...
SAR studies in two Arizona deserts; sand penetration, geology, and the detection of military ordnance debris
G. G. Schaber, C. S. Breed
1998, Open-File Report 98-339
Ground-water flow in the surficial aquifer system and potential movement of contaminants from selected waste-disposal sites at Naval Station Mayport, Florida
K. J. Halford
1998, Water-Resources Investigations Report 97-4262
Ground-water flow through the surficial aquifer system at Naval Station Mayport near Jacksonville, Florida, was simulated with a two-layer finite-difference model as part of an investigation conducted by the U.S. Geological Survey. The model was calibrated to 229 water-level measurements from 181 wells during three synoptic surveys (July 17, 1995;...
Digital representation of a map showing the thickness and character of Quaternary sediments in the glaciated United States east of the Rocky Mountains
D. R. Soller, Patricia H. Packard
1998, Data Series 38
This CD-ROM contains vector-based digital geologic maps of the surficial deposits in parts of 23 states where continental glaciation occurred during the Quaternary. These maps, at 1:1,000,000-scale, include the texture of the surface sediments and the total thickness of Quaternary sediments. Map compilation was based on about 850 sources of...
Pesticides in surface water in agricultural and urban areas of the South Platte River basin, from Denver, Colorado, to North Platte, Nebraska, 1993-94
R. A. Kimbrough, D. W. Litke
1998, Water-Resources Investigations Report 97-4230
Survival of female northern pintails wintering in southwestern Louisiana
Robert R. Cox Jr., Alan D. Afton, Richard M. Pace III
1998, Journal of Wildlife Management (62) 1512-1521
The North American breeding population of northern pintails (Anas acuta) has reached previously unprecedented low numbers 4 times since 1983. Because pintails show high fidelity to wintering areas, regional survival estimates and identification of factors influencing survival are needed to guide management of wintering pintails. We used radiotelemetry to estimate...
Seasonal and spatial variability of nutrients and pesticides in streams of the Willamette Basin, Oregon, 1993-95
F. A. Rinella, M.L. Janet
1998, Water-Resources Investigations Report 97-4082-C
From April 1993 to September 1995, the U.S. Geological Survey conducted a study of the occurrence and distribution of nutrients and pesticides in surface water of the Willamette and Sandy River Basins, Oregon, as part of the U.S. Geological Survey National Water-Quality Assessment (NAWQA) Program. About 260 samples were collected...
Water-quality data collected in a coastal marsh, Orleans, Cape Cod, Massachusetts, March 1993 through January 1998
L.A. DeSimone, P.K. Weiskel, B.L. Howes, K.P. Smith
1998, Open-File Report 98-184
