Mapping the global land surface using 1 km AVHRR data
D. T. Lauer, J.C. Eidenshink
1998, Space Technology (18) 71-76
The scientific requirements for mapping the global land surface using 1 km advanced very high resolution radiometer (AVHRR) data have been set forth by the U.S. Global Change Research Program; the International Geosphere Biosphere Programme (IGBP); The United Nations; the National Oceanic and Atmospheric Administration (NOAA); the Committee on Earth...
Sediment transport capacity as an objective of reservoir operations
Robert T. Milhous
Loucks E, editor(s)
1998, Conference Paper, Proceedings of the Annual Water Resources Planning and Management Conference
A sediment transport capacity index was developed as a part of a program to develop methods of flushing flow analysis. The index can be used to develop reservoir operation strategies that consider the movement of sediment as one of the reservoir management goals. The sedimentation transport capacity index determines the...
Herpetology of the Sulphur Springs Valley, Cochise County, Arizona
P.C. Rosen, S.S. Sartorius, C.R. Schwalbe, P. A. Holm, C.H. Lowe
1998, Proceedings RMRS-P-3
No abstract available at this time...
Adherence to balance tolerance limits at the Upper Mississippi Science Center, La Crosse, Wisconsin
C.T. Myers, D.M. Kennedy
1998, Quality assurance (San Diego, Calif.) (6) 45-52
Verification of balance accuracy entails applying a series of standard masses to a balance prior to use and recording the measured values. The recorded values for each standard should have lower and upper weight limits or tolerances that are accepted as verification of balance accuracy under normal operating conditions. Balance...
Lake bed classification using acoustic data
Karen K. Yin, Xing Li, John Bonde, Carl Richards, Gary Cholwek
1998, Applied Mathematics and Computer Science (8) 841-864
As part of our effort to identify the lake bed surficial substrates using remote sensing data, this work designs pattern classifiers by multivariate statistical methods. Probability distribution of the preprocessed acoustic signal is analyzed first. A confidence region approach is then adopted to improve the design of the...
On sediment and habitat in the Upper Animas River watershed, Colorado
Robert T. Milhous
1998, Conference Paper, International Water Resources Engineering Conference - Proceedings
The Upper Animas River watershed in southwestern Colorado is located in the San Juan mountains and has been intensively mined. Active mining has essentially ceased but the impact of past mining on the aquatic ecosystem continues. This paper presents initial results from a study to determine the characteristics of the...
Growth and physiological responses to surgical and gastric radio transmitter implantation techniques in subyearling chinook salmon (Oncorhynchus tshawytscha)
Theresa L. Martinelli, H.C. Hansel, R.S. Shively
1998, Hydrobiologia (371-372) 79-87
We examined the effects of surgical and gastric transmitter implantation techniques on the growth, general physiology and behavior of 230 subyearling chinook salmon (Oncorhynchus tshawytscha, Walbaum) (100 mm-154 mm fork length). The transmitter weighed 1.3 g in air (0.9 g in water) and comprised, on average, 6% of the body...
Breeding synchrony and extrapair fertilizations in two populations of red-winged blackbirds
D. F. Westneat, Elizabeth M. Gray
1998, Behavioral Ecology (9) 456-464
We tested the relationship between synchrony of breeding and the frequency of extrapair fertilizations (EPFs) in two populations of red-winged blackbirds known to differ in female extrapair behavior. We found no association between the number of simultaneously fertilizable females (temporal neighbors) and EPF rate in either population, although a significant...
Chemistry, isotopic composition, and origin of a methane-hydrogen sulfide hydrate at the Cascadia subduction zone
M. Kastner, K.A. Kvenvolden, T.D. Lorenson
1998, Earth and Planetary Science Letters (156) 173-183
Although the presence of extensive gas hydrate on the Cascadia margin, offshore from the western U.S. and Canada, has been inferred from marine seismic records and pore water chemistry, solid gas hydrate has only been found at one location. At Ocean...
Tectonic setting of synorogenic gold deposits of the Pacific Rim
R.J. Goldfarb, G.N. Phillips, W. J. Nokleberg
1998, Ore Geology Reviews (13) 185-218
More than 420 million oz of gold were concentrated in circum-Pacific synorogenic quartz loades mainly during two periods of continental growth, one along the Gondwanan margin in the Palaeozoic and the other in the northern Pacific basin between 170 and 50 Ma. These ores have many features in common and...
Hydrology of prairie pothole wetlands during drought and deluge: A 17-year study of the Cottonwood Lake wetland complex in North Dakota in the perspective of longer term measured and proxy hydrological records
T. C. Winter, D.O. Rosenberry
1998, Climatic Change (40) 189-209
From 1988 to 1992 the north-central plains of North America had a drought that was followed by a wet period that continues to the present (1997). Data on the hydrology of the Cottonwood Lake area (CWLA) collected for nearly 10 years before, and during, the recent dry and wet periods...
Indices of benthic community tolerance in contaminated Great Lakes sediments: Relations with sediment contaminant concentrations, sediment toxicity, and the sediment quality triad
M. L. Wildhaber, C. J. Schmitt
1998, Environmental Monitoring and Assessment (49) 23-49
We evaluated the toxic-units model developed by Wildhaber and Schmitt (1996) as a predictor of indices of mean tolerance to pollution (i.e., Lenat, 1993; Hilsenhoff, 1987) and other benthic community indices from Great Lakes sediments containing complex mixtures of environmental contaminants (e.g., polychlorinated biphenyls – PCBs, polycyclic aromatic hydrocarbons –...
Seasonal and spatial patterns of nitrate and silica concentrations in Canajoharie Creek, New York
G. R. Wall, P. J. Phillips, K. Riva-Murray
1998, Journal of Environmental Quality (27) 381-389
The impact of nonpoint-source pollution on surface waters in agricultural watersheds is an emerging environmental issue. As part of the U.S. Geological Survey National Water Quality Assessment program in the Hudson River Basin, Canajoharie Creek was monitored for seasonal and spatial patterns of nutrient chemistry...
Effects of the herbicide atrazine on Ambystoma tigrinum metamorphosis: duration, larval growth, and hormonal response
Diane L. Larson, Susan McDonald, Steven J. Hamilton, Albert J. Fivizzani, Wesley E. Newton
1998, Physiological Zoology (71) 671-679
We exposed larval tiger salamanders (Ambystoma tigrinum) reared in the laboratory from eggs collected from a prairie wetland in North Dakota to three concentrations of atrazine (0, 75, and 250 i??g/L) in a static renewal test to determine the pesticide's effect on (1) plasma corticosterone and thyroxine concentrations, (2) larval...
Bird flight characteristics near wind turbines in Minnesota
R. G. Osborn, Charles D. Dieter, Kenneth F. Higgins, R. E. Usgaard
1998, American Midland Naturalist (139) 29-38
During 1994–1995, we saw 70 species of birds on the Buffalo Ridge Wind Resource Area. In both years bird abundance peaked in spring. Red-winged blackbirds (Agelaius phoeniceus), mallards (Anas platyrhynchos), common grackles (Quiscalus quiscula), and barn swallows (Hirundo rustica) were the species most commonly seen. Most birds (82–84%) flew above...
Pair interactions in red-faced warblers
P.M. Barber, T. E. Martin, Kimberly G. Smith
1998, Condor (100) 512-518
Forty pairs of breeding Red-faced Warblers (Cardellina rubrifrons) were observed in 1992 and 1993 on the Mogollon Rim, Arizona. Intrusions by extra-pair males, interactions between pair members, and other pair interaction behaviors were recorded. The majority of intrusions occurred during the building stage of the nesting cycle. Males responded to...
Anthropogenic effects on winter behavior of ferruginous hawks
D.L. Plumpton, D. E. Andersen
1998, Journal of Wildlife Management (62) 340-346
Little information is known about the ecology of ferruginous hawks (Buteo regalis) in winter versus the breeding season and less about how the species adapts to fragmented grassland habitats. Accordingly, we studied the behavior of 38 radiotagged ferruginous hawks during 3 winters...
Occurrence and distribution of semivolatile organic compounds in stream bed sediments, United States, 1992-95
Thomas J. Lopes, Edward T. Furlong, Jeffrey W. Pritt
Edward E. Little, Bruce M. Greenberg, Aaron J. DeLonay, editor(s)
1998, Book chapter, Environmental Toxicology and Risk Assessment: Seventh Volume
Bed-sediment samples from streams were collected from 443 sites in 19 major river basins during 1992-95 and analyzed for semivolatile organic compounds (SVOCs) to assess the occurrence and distribution of selected Hydrophobic contaminants. Forty SVOCs were detected in more than 5 percent of samples. Of these 40 SVOCs, 27 were...
Regression models of herbicide concentrations in outflow from reservoirs in the midwestern USA, 1992-1993
W.A. Battaglin, D. A. Goolsby
1998, Journal of the American Water Resources Association (34) 1369-1390
Reservoirs are used to store water for public water supply, flood control, irrigation, recreation, hydropower, and wildlife habitat, but also often store undesirable substances such as herbicides. The outflow from 76 reservoirs in the midwestern USA, was sampled four times in 1992 and four times in 1993. At least one...
The petrogenesis of felsic calc-alkaline magmas from the southernmost Cascades, California: Origin by partial melting of basaltic lower crust
L. E. Borg, M.A. Clynne
1998, Journal of Petrology (39) 1197-1222
The majority of felsic rocks from composite centers in the southernmost Cascades have geochemical and Sr, Nd and Pb isotopic ratios that suggest derivation by partial melting of lower crust that is compositionally similar to calc-alkaline basalts observed in the region. Only a few felsic rocks have δ18O and...
Metal uptake by phytoplankton during a bloom in South San Francisco Bay: Implications for metal cycling in estuaries
S. N. Luoma, A. VanGeen, B.-G. Lee, J. E. Cloern
1998, Limnology and Oceanography (43) 1007-1016
The 1994 spring phytoplankton bloom in South San Francisco Bay caused substantial reductions in concentrations of dissolved Cd, Ni, and Zn, but not Cu. We estimate that the equivalent of ~60% of the total annual input of Cd, Ni, and Zn from local waste‐water treatment plants is...
Analysis of lake-bottom sediment to estimate historical nonpoint-source phosphorus loads
K. E. Juracek
1998, Journal of the American Water Resources Association (34) 1449-1463
ABSTRACT Bottom sediment in Hillsdale Lake, Kansas, was analyzed to estimate the annual load of total phosphorus deposited in the lake from nonpoint sources. Topographic, bathymetric, and sediment-core data were used to estimate the total mass of phosphorus in the lake-bottom sediment. Available streamflow and...
An observation on caching of prey by a long-tailed weasel (Mustela frenata)
E. Muths
1998, Southwestern Naturalist (43) 106
[No abstract available]...
Evaluation of radio-tracking and strip transect methods for determining foraging ranges of Black-Legged Kittiwakes
William D. Ostrand, G.S. Drew, R.M. Suryan, L.L. McDonald
1998, The Condor (100) 709-718
We compared strip transect and radio-tracking methods of determining foraging range of Black-legged Kittiwakes (Rissa tridactyla). The mean distance birds were observed from their colony determined by radio-tracking was significantly greater than the mean value calculated from strip transects. We determined that this difference was due to two sources of...
Sensitivity of condition indices to changing density in a white-tailed deer population
M.G. Sams, R.L. Lochmiller, C.W. Qualls Jr., David M. Leslie Jr.
1998, Journal of Wildlife Diseases (34) 110-125
The ways in which comprehensive condition profiles, incorporating morphometric, histologic, physiologic, and diet quality indices, responded to changes in density of a white-tailed deer (Odocoileus virginianus) population were examined. Changes in these condition indices were monitored in a northeastern Oklahoma deer herd as...
