Field evaluation of boat-mounted acoustic Doppler instruments used to measure streamflow
D. S. Mueller
Rizoli J.A., editor(s)
2003, Conference Paper, Proceedings of the IEEE Working Conference on Current Measurement
The use of instruments based on the Doppler principle for measuring water velocity and computing discharge is common within the U.S. Geological Survey (USGS). The instruments and software have changed appreciably during the last 5 years; therefore, the USGS has begun field validation of the instruments used to make discharge...
Measurement of illite particle thickness using a direct Fourier transform of small-angle X-ray scattering data
Chao Shang, James A. Rice, Dennis D. Eberl, Jar-Shyong Lin
2003, Clays and Clay Minerals (51) 293-300
It has been suggested that interstratified illite-smectite (I-S) minerals are composed of aggregates of fundamental particles. Many attempts have been made to measure the thickness of such fundamental particles, but each of the methods used suffers from its own limitations and uncertainties. Small-angle X-ray scattering (SAXS) can be used to...
The 2000 Nemuro-Hanto-Oki earthquake, off eastern Hokkaido, Japan, and the high intraslab seismic activity in the southwestern Kuril Trench
H. Takahashi, K. Hirata
2003, Journal of Geophysical Research B: Solid Earth (108)
The 2000 Nemuro-Hanto-Oki earthquake (Mw6.8) occurred in the southwestern part of the Kuril Trench. The hypocenter was located close to the aftershock region of the great 1994 Kuril earthquake (Mw8.3), named "the 1994 Hokkaido-Toho-Oki earthquake" by the Japan Meteorological Agency, for which the fault plane is still in debate. Analysis...
Aeolian cliff-top deposits and buried soils in the White River Badlands, South Dakota, USA
J. E. Rawling III, G. G. Fredlund, S. Mahan
2003, Holocene (13) 121-129
Aeolian deposits in the North American Great Plains are important sources of Holocene palaeo-environmental records. Although there are extensive studies on loess and dune records in the region, little is known about records in aeolian cliff-top deposits. These are common on table (mesa) edges in the White River Badlands. These...
Establishment of dreissenids in Lake Ontario: implications for the endemic fish community
Robert O’Gorman, Randall W. Owens
2003, Conference Paper, Invasion of alien species in Holarctic: proceedings of the U.S.-Russia Invasive Species Workshop
Coincident with the establishment of dreissenids in Lake Ontario, the depth distribution of alewife, a non-native predator of larval fishes, shifted deeper and the abundance of burrowing amphipod, Diporeia, declined sharply. The alewife distribution shift was followed by increased reproductive success of two native fishes, lake trout and yellow perch...
Foraminifera as bioindicators in coral reef assessment and monitoring: The foram index
P. Hallock, B. H. Lidz, E. M. Cockey-Burkhard, K.B. Donnelly
2003, Environmental Monitoring and Assessment (81) 221-238
Coral reef communities are threatened worldwide. Resource managers urgently need indicators of the biological condition of reef environments that can relate data acquired through remote-sensing, water-quality and benthic-community monitoring to stress responses in reef organisms. The "FORAM" (Foraminifera in Reef Assessment and Monitoring) Index (FI) is based on 30 years...
Track plate enclosures: Box designs affecting attractiveness to riparian mammals
J. J. Loukmas, D. T. Mayack, M. E. Richmond
2003, American Midland Naturalist (149) 219-224
We examined the efficacy of four track plate enclosure designs for monitoring the abundance of small and medium-sized mammals along 10 streams in New York State. Box size and clarity of view through the box were evaluated as factors affecting visitation. We checked track plate stations weekly from September 1999...
Juvenile steelhead and other fish rearing in the Wind River watershed. Connolly, J.P. (ed.), Wind River watershed restoration. 2000-2001
I.G. Jezorek, P.J. Connolly
P.J. Connolly, editor(s)
2003, Report
Abstract not available ...
Desalinization, erosion, and tidal changes following the breaching of Napa salt pond 3
K. M. Swanson, G.G. Shellenbarger, D. H. Schoellhamer, N. K. Ganju, N.D. Athearn, P.A. Buchanan
2003, Conference Paper, Proceedings of the 6th biennial State-of-the-Estuary Conference
No abstract available....
Accumulation, release, and solubility of arsenic, molybdenum, and vanadium in wetland sediments
P.M. Fox, H.E. Doner
2003, Journal of Environmental Quality (32) 2428-2435
This study was undertaken to determine the fate of As, Mo, and V (trace elements, TEs) in the sediments of a constructed wetland in use for the remediation of potentially toxic trace element–contaminated agricultural drainwater. After three years of wetland operation, sediment cores were collected to determine changes in TE...
Rockfall hazard and risk assessment in the Yosemite Valley, California, USA
F. Guzzetti, P. Reichenbach, G. F. Wieczorek
2003, Natural Hazards and Earth System Sciences (3) 491-503
Rock slides and rock falls are the most frequent types of slope movements in Yosemite National Park, California. In historical time (1857-2002) 392 rock falls and rock slides have been documented in the valley, and some of them have been mapped in detail. We present the results of an attempt...
Seasonal and longitudinal homogeneity of suspended sediment in San Francisco Bay, California
D. H. Schoellhamer, N. K. Ganju, J. W. Gartner, M.C. Murrell, S.A. Wright
2003, Conference Paper, Proceedings of the 17th Biennial Conference of the Estuarine Research Federation
No abstract available....
Monitoring of Lost River and shortnose suckers at Upper Klamath Lake non-spawning locations
H.A. Hendrixson, E.C. Janney, R.S. Shively
2003, Report
Abstract not available ...
Monitoring of Lost River suckers in the lower Williamson River
T.J. Tyler, E.C. Janney, H. Hendrixson, R.S. Shively
2003, Report
Abstract not available ...
Characterization of limestone reacted with acid-mine drainage in a pulsed limestone bed treatment system at the Friendship Hill National Historical Site, Pennsylvania, USA
Jane M. Hammarstrom, Philip Sibrell, Harvey E. Belkin
2003, Applied Geochemistry (18) 1705-1721
Armoring of limestone is a common cause of failure in limestone-based acid-mine drainage (AMD) treatment systems. Limestone is the least expensive material available for acid neutralization, but is not typically recommended for highly acidic, Fe-rich waters due to armoring with Fe(III) oxyhydroxide coatings. A new AMD treatment technology that uses...
Use of input uncertainty and model sensitivity to guide site exploration
A.J. Graettinger, H. W. Reeves, J. Lee, D. Dethan
Mishra S.Mishra S., editor(s)
2003, Conference Paper, Groundwater Quality Modeling and Management Under Uncertinity
Three Quantitatively Directed Exploration (QDE) methods to identify optimum field sampling locations based on model input covariance and model sensitivity are presented. The first method bases site exploration only on the spatial variation in the uncertainty of input properties. The second method uses only the spatial variation in model sensitivities....
Historical wetlands in Oregon's Willamette Valley: Implications for restoration of winter waterbird habitat
Oriane W. Taft, Susan M. Haig
2003, Wetlands (23) 51-64
Before agricultural expansion in the 19th century, river valleys of North America supported expanses of wetland habitat. In restoring these landscapes, it is important to understand their historical condition and biological function. Synthesizing historical primary accounts (from explorers, travelers, settlers, and farmers) with contemporary knowledge of these wetland systems, we...
Gyrfalcon diet in central west Greenland during the nestling period
Travis Booms, Mark R. Fuller
2003, The Condor (105) 528-537
We studied food habits of Gyrfalcons (Falco rusticolus) nesting in central west Greenland in 2000 and 2001 using three sources of data: time-lapse video (3 nests), prey remains (22 nests), and regurgitated pellets (19 nests). These sources provided different information describing the diet during the nesting period. Gyrfalcons relied heavily...
Fire and aquatic ecosystems of the western USA: Current knowledge and key questions
P.A. Bisson, B. Rieman, C. Luce, Paul F. Hessburg, D. Lee, J. Kershner, G.H. Reeves, Robert E. Gresswell
2003, Forest Ecology and Management (178) 213-229
Understanding of the effects of wildland fire and fire management on aquatic and riparian ecosystems is an evolving field, with many questions still to be resolved. Limitations of current knowledge, and the certainty that fire management will continue, underscore the need to summarize available information. Integrating fire and fuels management...
Indirect facilitation of an anuran invasion by non-native fishes
M. J. Adams, Christopher A. Pearl, R. Bruce Bury
2003, Ecology Letters (6) 343-351
Positive interactions among non-native species could greatly exacerbate the problem of invasions, but are poorly studied and our knowledge of their occurrence is mostly limited to plant-pollinator and dispersal interactions. We found that invasion of bullfrogs is facilitated by the presence of co-evolved non-native fish, which increase tadpole survival by...
Coexistence in a multispecies assemblage of eagles in central Asia
Todd Katzner, E. Bragin, Steven T. Knick, Andrew T. Smith
2003, The Condor (105) 538-551
We evaluated factors that permit species coexistence in an exceptional assemblage of similar raptor species at the Naurzum Zapovednik (a national nature reserve) in north-central Kazakhstan. White-tailed Sea-Eagle (Haliaeetus albicilla), Imperial Eagle (Aquila heliaca), Golden Eagle (A. chrysaetos), and Steppe Eagle (A. nipalensis) all breed at the Zapovednik. Steppe Eagle...
Comment: "Perspectives on water flow and the interpretations of FLIR images" J.Range Manage. 55: 106-111 2002
R. L. Beschta, B.A. McIntosh, Christian E. Torgersen
2003, Journal of Range Management (56) 97-99
No abstract available....
Organochlorine pesticides, PCBs, trace elements and metals in western pond turtle eggs from Oregon
Charles J. Henny, K.F. Beal, R. Bruce Bury, R. Goggans
2003, Northwest Science (77) 46-53
With increased concern over the status of reptile populations globally, contaminant studies should be part of species evaluations. We analyzed eggs of western pond turtles from Fern Ridge Reservoir in western Oregon for 20 organochlorine (OC) pesticides or metabolites, 42 congener-specific polychlorinated biphenyls (PCBs), and 16 trace elements or metals....
Measurements of thermal updraft intensity over complex terrain using American white pelicans and a simple boundary-layer forecast model
H.D. Shannon, G.S. Young, M. Yates, Mark R. Fuller, W. Seegar
2003, Boundary-Layer Meteorology (104) 167-199
An examination of boundary-layer meteorological and avian aerodynamic theories suggests that soaring birds can be used to measure the magnitude of vertical air motions within the boundary layer. These theories are applied to obtain mixed-layer normalized thermal updraft intensity over both flat and complex terrain from the climb rates of...
Comparison of ion-exchange resin counterions in the nutrient measurement of calcareous soils: Implications for correlative studies of plant-soil relationships
S. K. Sherrod, Jayne Belnap, M. E. Miller
2003, Communications in Soil Science and Plant Analysis (34) 1981-2001
For more than 40 years, ion-exchange resins have been used to characterize nutrient bioavailability in terrestrial and aquatic ecosystems. To date, however, no standardized methodology has been developed, particularly with respect to the counterions that initially occupy resin exchange sites. To determine whether different resin counterions yield different measures of...
