White sturgeon mitigation and restoration in the Columbia and Snake Rivers upstream from Bonneville Dam
M.J. Parsley, D.G. Gallion, K.M. Kappenman, P.E. Kofoot
David L. Ward, editor(s)
2002, Report
No abstract available ...
Editors' message: The past year and thanks
Robert Schneider, Clifford I. Voss
2002, Hydrogeology Journal (10) 1-2
No abstract available....
Impacts of aquatic nonindigenous invasive species on the Lake Erie ecosystem
Madeline J.W. Austen, Jan J.H. Ciborowski, Lynda D. Corkum, Tim B. Johnson, Hugh J. MacIsaac, Janice L. Metcalfe-Smith, Donald W. Schloesser, Sandra E. George
2002, Conference Paper, Proceedings of the 11th International Conference on Aquatic Invasive Species
Lake Erie is particularly vulnerable to the introduction and establishment of aquatic nonindigenous invasive species (NIS) populations. A minimum of 144 aquatic NIS have been recorded in the Lake Erie basin including several species [e.g., Eurasian watermilfoil (Myriophyllum spicatum); zebra mussel (Dreissena polymorpha); quagga mussel (Dreissena bugensis); an amphipod (Echinogammarus...
Forage quantity and quality
Janet C. Jorgenson, Mark S. Udevitz, Nancy A. Felix
David C. Douglas, Patricia E. Reynolds, E. B. Rhode, editor(s)
2002, Biological Science Report 2002-0001-5
The Porcupine caribou herd has traditionally used the coastal plain of the Arctic National Wildlife Refuge, Alaska, for calving. Availability of nutritious forage has been hypothesized as one of the reasons the Porcupine caribou herd migrates hundreds of kilometers to reach the coastal plain for calving (Kuropat and Bryant 1980,...
Spatial variability in water-balance model performance in the conterminous United States
Lauren E. Hay, Gregory J. McCabe
2002, Journal of the American Water Resources Association (38) 847-860
A monthly water-balance (WB) model was tested in 44 river basins from diverse physiographic and climatic regions across the conterminous United States (U.S.). The WB model includes the concepts of climatic water supply and climatic water demand, seasonality in climatic water supply and demand, and soil-moisture storage. Exhaustive search techniques...
Preface: Proceedings of the seventh international symposium on the biology and management of corigonid fishes
Thomas Todd, Guy Fleischer
2002, Book chapter, Biology and management of corigonid fishes
This volume is the proceedings of the Seventh International Symposium on the Biology and Management of Coregonid Fishes (ISBMCF). As in all six preceding symposia, the seventh meeting of the ISBMCF provided an international forum for the scientific review and discussion of the various taxonomic, biological, ecological, and management issues...
Microbial ecology of a crude oil contaminated aquifer
B.A. Bekins, I.M. Cozzarelli, E. Warren, E.M. Godsy
2002, IAHS-AISH Publication 57-64
Detailed microbial analyses of a glacial outwash aquifer contaminated by crude oil provide insights into the pattern of microbial succession from iron reducing to methanogenic in the anaerobic portion of the contaminant plume. We analysed sediments from this area for populations of aerobes, iron reducers, fermenters and methanogens, using the...
Porometric properties of siliciclastic marine sand: A comparison of traditional laboratory measurements with image analysis and effective medium modeling
A.H. Reed, K.B. Briggs, D. L. Lavoie
2002, IEEE Journal of Oceanic Engineering (27) 581-592
During the 1999 sediment acoustics experiment (SAX99), porometric properties were measured and predicted for a well sorted, medium sand using standard laboratory geotechnical methods and image analysis of resin-impregnated sediments. Sediment porosity measured by laboratory water-weight-loss methods (0.372 ?? 0.0073 for mean ??1 standard deviation) is 0.026 lower than determined...
How often do fishes "run on empty"?
D.A. Arrington, K.O. Winemiller, W.F. Loftus, S. Akin
2002, Ecology (83) 2145-2151
We used a large data set of African, Neotropical, and North American fishes to examine the frequency with which fishes have empty stomachs (nspecies = 254; nindividuals = 36 875). Mean percentage of empty stomachs was low across all fishes (16.2 ± 1.2%) but varied from 0% to 79.4% among individual species. Nocturnal fishes...
Topography and geologic characteristics of aeolian grooves in the south polar layered deposits of Mars
N.T. Bridges, Kenneth E. Herkenhoff
2002, Icarus (156) 387-398
The topographic and geologic characteristics of grooves and groove-like features in the south polar layered deposits near the Mars Polar Lander/Deep Space 2 landing sites are evaluated using Mariner 9 images and their derived photoclinometry, normalized using Mars Orbiter Laser Altimeter data. Although both Mariner 9 and Viking images of...
Calibration and temperature correction of heat dissipation matric potential sensors
A. L. Flint, G. S. Campbell, K. M. Ellett, C. Calissendorff
2002, Soil Science Society of America Journal (66) 1439-1445
This paper describes how heat dissipation sensors, used to measure soil water matric potential, were analyzed to develop a normalized calibration equation and a temperature correction method. Inference of soil matric potential depends on a correlation between the variable thermal conductance of the sensor's porous ceramic and matric potential. Although...
Effect of adsorbed metals ions on the transport of Zn- and Ni-EDTA complexes in a sand and gravel aquifer
D.B. Kent, J.A. Davis, L.C.D. Anderson, B.A. Rea, J.A. Coston
2002, Geochimica et Cosmochimica Acta (66) 3017-3036
Adsorption, complexation, and dissolution reactions strongly influenced the transport of metal ions complexed with ethylenediaminetetraacetic acid (EDTA) in a predominantly quartz-sand aquifer during two tracer tests conducted under mildly reducing conditions at pH 5.8 to 6.1. In tracer test M89, EDTA complexes of zinc...
Evidence from uranium-series-dated speleothems for the timing of the penultimate deglaciation of northwestern Europe
I.J. Winograd
2002, Quaternary Research (58) 60-61
[No abstract available]...
Chemical transport from paired agricultural and restored prairie watersheds
Keith E. Schilling
2002, Journal of Environmental Quality (31) 1184-1193
A five-year record of streamflow and chemical sampling data was evaluated to assess the effects of large-scale prairie restoration on transport of NO3–N, Cl, and SO4 loads from paired 5000-ha watersheds located in Jasper County, Iowa. Water quality conditions monitored during land use conversion from row crop agriculture to native prairie...
Productivity responses of Acer rubrum and Taxodium distichum seedlings to elevated CO2 and flooding
C.D. Vann, J.P. Megonigal
2002, Environmental Pollution (116)
Elevated levels of atmospheric CO2 are expected to increase photosynthetic rates of C3 tree species, but it is uncertain whether this will result in an increase in wetland seedling productivity. Separate short-term experiments (12 and 17 weeks) were performed on two wetland tree species, Taxodium distichum and Acer rubrum, to...
Effects of a coastal golf complex on water quality, periphyton, and seagrass
M.A. Lewis, R.G. Boustany, D.D. Dantin, R.L. Quarles, J.C. Moore, R. S. Stanley
2002, Ecotoxicology and Environmental Safety (53) 154-162
The objective of this study was to provide baseline information on the effects of a golf course complex on water quality, colonized periphyton, and seagrass meadows in adjacent freshwater, near-coastal, and wetland areas. The chemical and biological impacts of the recreational facility, which uses reclaimed municipal wastewater for irrigation, were...
Comment [on 'Are Proterozoic cap carbonates and isotopic excursions a record of gas hydrate destabilization following Earth’s coldest intervals?, Kennedy et al., Geology 29(5), 442-446]
M.D. Max, William P. Dillon
2002, Geology (30) 762-763
We welcome the evidence noted by Kennedy et al. (2001) for strong methane excursions associated with the cessation of glacial episodes. They identify the carbon in cap carbonates overlying glacial sediments as probably being of biogenic origin and as likely having had a biogenic methane source. These authors suggest that...
Effects of tidal current phase at the junction of two straits
John C. Warner, David H. Schoellhamer, Jon Burau, Geoffrey Schladow
2002, Conference Paper
Estuaries typically have a monotonic increase in salinity from freshwater at the head of the estuary to ocean water at the mouth, creating a consistent direction for the longitudinal baroclinic pressure gradient. However, Mare Island Strait in San Francisco Bay has a local salinity minimum created by the phasing of...
The significance of pockmarks to understanding fluid flow processes and geohazards
M. Hovland, J.V. Gardner, A.G. Judd
2002, Geofluids (2) 127-136
Underwater gas and liquid escape from the seafloor has long been treated as a mere curiosity. It was only after the advent of the side-scan sonar and the subsequent discovery of pockmarks that the scale of fluid escape and the moonlike terrain on parts of the ocean floor became generally...
In‐stream sorption of fulvic acid in an acidic stream: A stream‐scale transport experiment
Diane M. McKnight, George M. Hornberger, Kenneth E. Bencala, Elizabeth W. Boyer
2002, Water Resources Research (38) 6-1-6-12
The variation of concentration and composition of dissolved organic carbon (DOC) in stream waters cannot be explained solely on the basis of soil processes in contributing subcatchments. To investigate in‐stream processes that control DOC, we injected DOC‐enriched water into a reach of the Snake River (Summit County, Colorado) that has...
Mapping apparent stress and energy radiation over fault zones of major earthquakes
Art McGarr, Joe B. Fletcher
2002, Bulletin of the Seismological Society of America (92) 1633-1646
Using published slip models for five major earthquakes, 1979 Imperial Valley, 1989 Loma Prieta, 1992 Landers, 1994 Northridge, and 1995 Kobe, we produce maps of apparent stress and radiated seismic energy over their fault surfaces. The slip models, obtained by inverting seismic and geodetic data, entail the division of the...
USGS leads United States effort in Mallik Well
2002, Fire in the Ice: NETL Methane Hydrate Newsletter (2) 3-4
This winter, in the extremely cold, far reaches of the upper Northwest Territory of Canada, there is an international consortium of researchers participating in a program to study methane hydrates. The researchers are currently drilling a 1200 m-deep production research well through the permafrost. It is one of three wells...
Multispectral image sharpening using a shift-invariant wavelet transform and adaptive processing of multiresolution edges
G.P. Lemeshewsky
Z.-U. Rahman, R.A. Schowengerdt, S.E. Reichenbach, editor(s)
2002, Conference Paper, Proceedings of SPIE - The International Society for Optical Engineering
Enhanced false color images from mid-IR, near-IR (NIR), and visible bands of the Landsat thematic mapper (TM) are commonly used for visually interpreting land cover type. Described here is a technique for sharpening or fusion of NIR with higher resolution panchromatic (Pan) that uses a shift-invariant implementation of the discrete...
Processing, mosaicking and management of the Monterey Bay digital sidescan-sonar images
P.S. Chavez Jr., J. Isbrecht, P. Galanis, G.L. Gabel, S.C. Sides, D.L. Soltesz, Stephanie L. Ross, M.G. Velasco
2002, Marine Geology (181) 305-315
Sidescan-sonar imaging systems with digital capabilities have now been available for approximately 20 years. In this paper we present several of the various digital image processing techniques developed by the U.S. Geological Survey (USGS) and used to apply intensity/radiometric and geometric corrections, as well as enhance and digitally mosaic, sidescan-sonar...
Towards a sediment budget for the Santa Cruz shelf
S.L. Eittreim, J. P. Xu, M. Noble, B. D. Edwards
2002, Marine Geology (181) 235-248
A conceptual model is presented for the northern Monterey Bay continental shelf in which coarse sediment moves southward along the coast in the littoral zone while fine sediment moves to the north by advection and diffusion along the midshelf. Data from measurements and estimates of various sediment sources and sinks...
