Natural resource problem solving: An interdisciplinary approach in coastal Louisiana
A. Lee Foote, Virginia R. Burkett, S. Jeffress Williams
1993, Conference Paper, Coastal zone '93 : Proceedings of the eighth Symposium on Coastal and Ocean Management
No abstract available....
Sensitivity of early-life stage golden trout to low pH and elevated aluminum
Aaron J. DeLonay, Edward E. Little, Daniel F. Woodward, William G. Brumbaugh, Aida M. Farag, Charles F. Rabeni
1993, Environmental Toxicology and Chemistry (12) 1223-1232
Early-life-stage golden trout (Oncorhynchus aguabonita aguabonita) were exposed to acid and Al to examine the response and determine the sensitivity of a western, alpine salmonid to conditions simulating an episodic pH depression. Freshly fertilized eggs, alevins, and swim-up larvae were exposed for 7 d to one of 12 combinations of...
A rapid inoculation technique for assessing pathogenicity of Fusarium oxysporum f. sp. niveum and F. o. melonis on Cucurbits
S. Freeman, R. J. Rodriguez
1993, Plant Disease (77) 1198-1201
A continuous-dip inoculation technique for rapid assessment of pathogenicity of Fusarium oxysporum f. sp. niveum and F. o. melonis was developed. The method, adapted from a similar procedure for determining pathogenicity of Colletotrichum magna (causal agent of anthracnose of cucurbits), involves constant exposure of seedlings and cuttings (seedlings with root...
Site response estimates in Salt Lake Valley, Utah, from borehole seismic velocities
R. A. Williams, K. W. King, John Tinsley
1993, Bulletin of the Seismological Society of America (83) 862-889
The general correlation of Salt Lake Valley sites located on soft, saturated unconsolidated silty and clayey deposits (that is, deposits with low S-wave velocity) with high seismic amplification at the ground surface motivated our investigation of the relationship between the P- and S-wave seismic velocity (Vp and Vs) of these units and their corresponding observed...
Mesoscale parameterization of heat fluxes due to landscape variability for use in general circulation models
R. A. Pielke, G. Dalu, T. J. Lee, H. Rodriguez, J. Eastman, Timothy G.F. Kittel
1993, Book, Exchange processes at the Land Surface for a Range of Space and Time Scales: Proceedings of the Yokohama Symposium
No abstract available....
Determination of size and element composition distributions of complex colloids by sedimentation field-flow fractionation—inductively coupled plasma mass spectrometry
Deirdre M. Murphy, John R. Garbarino, Howard E. Taylor, Ronald Beckett, B. Hart
1993, Journal of Chromatography A (642) 459-467
Sedimentation field-flow fractionation (SdFFF) and inductively coupled plasma mass spectrometry (ICP-MS) have been directly combined and the resulting SdFFF-ICP-MS instrument can be used to produce element based size distributions of colloidal samples. Using appropriate tracer elements the size distributions of specific components can be picked out from a complex mixture....
Snaring to control feral pigs sus scrofa in a remote Hawaiian rain forest
Stephen J. Anderson, Charles P. Stone
1993, Biological Conservation (63) 195-201
Feral pig Sus scrofa control in Kipahulu Valley, a remote rain forest in Haleakala National Park, Maui, Hawaiian Islands, has been achieved with snares over a 45-month period. Initial pig densities in fenced management units of 6·2 km2 and 7·8 km2were estimated at 6 animals/km2 and 14·3 animals/km2 for the...
Anatomy of a basaltic volcano
Robert I. Tilling, J.J. Dvorak
1993, Nature (363) 125-133
Kilauea volcano, in Hawaii, may be the best understood basaltic volcano in the world. Magma rises from a depth of 80 km or more and resides temporarily in near-surface reservoirs: eruption begins when the crust above one of these reservoirs splits open in response to a pressure increase. Repeated rift-zone...
Lessons in reducing volcano risk
Robert I. Tilling, Peter W. Lipman
1993, Nature (364) 277-280
No abstract available....
Seeing earthquakes from afar
William H. Prescott
1993, Nature (364) 100-101
No abstract available....
Multivariate geostatistical analysis of ground-water contamination: A case history
Jonathan D. Istok, Jeffrey D. Smyth, Alan L. Flint
1993, Groundwater (31) 63-74
A case history is presented for the application of multivariate geostatistical methods to the problem of estimating pesticide concentrations in ground water from measured concentrations of nitrate and pesticide, when pesticide is under‐sampled. The shallow, poorly confined, sand and gravel aquifer underlying the lower Malheur River basin near Ontario, Oregon...
Meromixis in hypersaline Mono Lake, California. 2. Nitrogen fluxes
R. Jellison, Laurence G. Miller, John M. Melack, Gayle L. Dana
1993, Limnology and Oceanography (38) 1020-1039
Vertical fluxes of nitrogen were examined in hypersaline Mono Lake over a 9-yr period which encompassed the onset, persistence, and breakdown of meromixis. Under monomictic conditions, ammonia, which accumulates in the hypolimnion, is mixed into the euphotic region during autumn overturn. Following the onset of meromixis in 1983 and elimination...
Transmission risk of Lyme disease and implications for tick management
Howard S. Ginsberg
1993, American Journal of Epidemiology (138) 65-73
Transmission risk of Lyme disease at a site can be estimated using the probability of exposure (P1 = probability of being bitten by at least one infected tick); P1 =1 - (1 - kt)n, where n = number of tick bites per person and kt = spirochete prevalence in questing ticks. This probability is more directly related to...
A technique for evaluating black-footed ferret habitat
Dean E. Biggins, Brian J. Miller, Louis R. Hanebury, Bob Oakleaf, Adrian H. Farmer, Ron Crete, Arnold Dood
1993, Book, Proceedings of the symposium on the management of prairie dog complexes for the reintroduction of the black-footed ferret
In this paper, we provide a model and step-by-step procedures for rating a prairie dog (Cynomys sp.) complex for the reintroduction of black-footed ferrets (Mustela nigripes). An important factor in the model is an estimate of the number of black-footed ferret families a prairie dog complex can support for a...
Effect of intrastorm isotopic heterogeneities of rainfall, soil water, and groundwater on runoff modeling
Carol Kendall, Jeffrey J. McDonnell
1993, Conference Paper, Hydrology of warm humid regions: Yokohama symposium, 1993, Tracers in hydrology
No abstract available....
Management Systems Evaluation Areas: An overview
J.L. Hatfield, J. L. Anderson, E.E. Alberts, Tony Prato, D.G. Watts, Andy Ward, G. N. Delin, Robert Swank
1993, Conference Paper, Agricultural Research to Protect Water Quality, Minneapolis, Minnesota, February 21-24, 1993, Proceedings
No abstract available....
Introduction
B. J. Miller, Dean E. Biggins, J. L. Oldemeyer, R. Crete
1993, Book, Management of prairie dog complexes for the reintroduction of the black-footed ferret
No abstract available....
Nests and nest sites of the San Miguel Island Song Sparrow
Michael D. Kern, Mark K. Sogge, Robert B. Kern, Charles van Riper III
1993, Journal of Field Ornithology (64) 367-381
Nests and nest sites of the San Miguel Island (SMI) Song Sparrow (Melospiza melodia micronyx) are described; nests are compared with those of 16 other races of Song Sparrows. Bush lupins (Lupinus albifrons), coyote brush (Baccharis pilularis) and golden bush (Haplopappus venetus) were the shrubs used most commonly as nest...
Survival of northern pintails banded during winter in North America, 1950-88
Jay B. Hestbeck
1993, Journal of Wildlife Management (57) 590-597
From 1950 through 1988, the continental breeding population of northern pintails (Anas acuta) varied from 2.0 million to 9.9 million. Because pintails have high fidelity to certain wintering grounds along coasts and large bodies of water, management on these wintering areas may increase population size if changes in winter survival...
Overwinter distribution of northern pintail populations in North America
Jay B. Hestback
1993, Journal of Wildlife Management (57) 582-589
Northern pintails (Anas acuta) exist as a single circumpolar breeding population but display weak fidelity to given breeding sites. If fidelity to wintering areas is strong, management on wintering grounds may allow local winter populations to increase. Thus, I delineated reference areas for wintering areas based on recovery data for...
A pressure-packer system for conducting rising head tests in water table wells
Benjamin S. Levy, Lawrence J. Pannell, John P. Dadoly
1993, Journal of Hydrology (148) 189-202
The pressure system developed for fully-saturated well screens has been modified for conducting rising head tests in water table wells installed in highly permeable aquifers. The pressure system consists of a compressed air source and 1 inch diameter PVC piping with a packer attached at the end. The pressure system...
Laguna madre: Seagrass changes continue decades after salinity reduction
Millicent L. Quammen, Christopher P. Onuf
1993, Estuaries (16) 302-310
Vegetation maps of the lower Laguna Madre prepared from surveys conducted in 1965–1967, 1974–1976, and 1988 document a >330 km2 decrease in cover byHalodule wrightii, an increase of almost 190 km2 in other seagrass species, and an increase of 140 km2 in bare bottom. Loss in seagrass cover is confined to...
Well log-derived estimates of thermal conductivity in crystalline rocks penetrated by the 4-KM deep KTB Vorbohrung
D. Pribnow, Colin F. Williams, H. Burkhardt
1993, Geophysical Research Letters (20) 1155-1158
Well log measurements of compressional and shear velocity (Vp, Vs), density, and temperature from the 4 km-deep KTB Vorbohrung (pilot hole) were applied in a phonon conduction model for the thermal conductivity of a crystalline solid. The resulting conductivity estimates were compared with conductivities (kLAB) measured on the nearly continuous...
Long-term monitoring of ozone injury to Jeffrey and Ponderosa Pines in Sequoia and Kings Canyon National Parks
D. M. Ewell, D. T. Gay
1993, Book, Air & Waste Management Association: 86th Annual Meeting & Exhibition
No abstract available....
Flood hydrology and geomorphic effects on river channels and flood plains: The flood of November 4-5, 1985, in the South Branch Potomac River Basin of West Virginia
Andrew J. Miller, Douglas J. Parkinson
1993, Bulletin 1981-E
The November 1985 flood was the largest recorded in the South Branch Potomac River basin. Discharges exceeded values estimated for a recurrence interval of 500 yr at four of six stations in the basin. Flow velocities in the channel were as high as 4.6 m/s and may have exceeded 6 m/s at some...
