Workshop proceedings: research and management in whitebark pine ecosystems
Katherine C. Kendall, Brenda Coen
1994, Book, Workshop proceedings: Research and management in whitebark pine ecosystems
The purpose of this workshop is to exchange information on on-going and soon-to-be-initiated whitebark pine research and management projects. By doing so we hope to encourage future work on this valuable species. We also hope to promote the use of consistent methods for evaluation and investigation of whitebark...
Microfossil biostratigraphy of prograding Neogene platform-margin carbonates, Bahamas: Age constraints and alternatives
Barbara H. Lidz, Timothy J. Bralower
1994, Marine Micropaleontology (23) 265-344
Benthic and planktic foraminifera and calcareous nannofossils were recovered in shallow-water carbonate rock cores from two continuous boreholes drilled 7.5 km apart on the west platform margin of the Great Bahama Bank. The microfossils define six biostratigraphic units in each hole. One unit in each hole represents a correlative condensed...
Ground water and the floods of 1993
R.C. Buchmiller
1994, Water Well Journal (48) 39-40
No abstract available....
Historical decline and current status of coho salmon in California
Larry R. Brown, Peter B. Moyle, Ronald M. Yoshiyama
1994, North American Journal of Fisheries Management (14) 237-261
The southernmost populations of coho salmon Oncorhynchus kisutch occur in California where native coho stocks have declined or disappeared from all streams in which they were historically recorded. Coho salmon previously occurred in as many as 582 streams, from the Smith River near the Oregon border to the San Lorenzo...
Closure to “Momentum and Energy Coefficients Based on Power‐Law Velocity Profile” by Cheng‐lung Chen (November, 1992, Vol. 118, No. 11)
Cheng-lung Chen
1994, Journal of Hydraulic Engineering (120) 669-669
No abstract available....
Geology, alteration, and geochronology of the Como District, Lyon County, Nevada
Peter G. Vikre, Edwin H. McKee
1994, Economic Geology (89) 639-646
No abstract available....
Interpretation of surface flux measurements in heterogeneous terrain during the Monsoon '90 experiment
D.I. Stannard, J.H. Blanford, William P. Kustas, W. D. Nichols, S.A. Amer, T.J. Schmugge, M.A. Weltz
1994, Water Environment Research (30) 1227-1239
A network of 9-m-tall surface flux measurement stations were deployed at eight sparsely vegetated sites during the Monsoon '90 experiment to measure net radiation, Q, soil heat flux, G, sensible heat flux, H (using eddy correlation), and latent heat flux, λE (using the energy balance equation). At four of these...
Humic and fulvic acids: sink or source in the availability of metals to the marine bivalves Macoma balthicaand Potamocorbula amurensis?
Alan Decho, Samuel N. Luoma
1994, Marine Ecology Progress Series (108) 133-145
Humic acids (HA) and fulvic acids (FA) are common forms of organic matter in marine sedirnents, and are routinely ingested by deposit- and suspension-feeding animals. These compounds may be a sink for metals, implying that once metals are bound to humic substances they are no longer available to food webs....
Effects of sample isolation and handling on the recovery of purgeable organic compounds
Jacob Gibs, Thomas E. Imbrigiotta, James H. Ficken, James F. Pankow, M. E. Rosen
1994, Ground Water Monitoring and Remediation (14) 142-152
This report compares the recovery of purgeable organic compounds (POCs) obtained by using a downhole isobaric sampler developed by the U.S. Geological Survey, a helical-rotor submersible pump, and a point source bailer to collect and isolate samples of ground water from three wells in Now York and New Jersey: the...
Survival of caged Atlantic salmon in the Merrimack River
Donald V. Rottiers
1994, North American Journal of Fisheries Management (14) 355-361
Because it is difficult to locate parr and smolts of Atlantic salmon Salmo salar in the lower Merrimack River in order to measure survival and evaluate physiological changes, 1 held hatchery fish in 122 × 46 ×61‐cm cages at three sites for up to 70 d in 1988 and 1989, beginning each...
Physiology of seawater acclimation in the striped bass, Morone saxatilis (Walbaum)
Steffen S. Madsen, Stephen D. McCormick, G. Young, J. S. Endersen, R. S. Nishioka, H. A. Bern
1994, Fish Physiology and Biochemistry (13) 1-11
Several experiments were performed to investigate the physiology of seawater acclimation in the striped bass, Morone saxatilis. Transfer of fish from fresh water (FW) to seawater (SW; 31–32 ppt) induced only a minimal disturbance of osmotic homeostasis. Ambient salinity did not affect plasma thyroxine, but plasma cortisol remained elevated for 24h...
The volcanic, sedimentologic, and paleolimnologic history of the Crater Lake caldera floor, Oregon:Evidence for small caldera evolution
C. Hans Nelson, Charles R. Bacon, Stephen W. Robinson, David P. Adam, J. Platt Bradbury, John H. Barber Jr., Deborah Schwartz, Ginger Vagenas
1994, Bulletin (106) 684-704
Apparent phreatic explosion craters, caldera-floor volcanic cones, and geothermal features outline a ring fracture zone along which Mount Mazama collapsed to form the Crater Lake caldera during its climactic eruption about 6,850 yr B.P. Within a few years, subaerial deposits infilled the phreatic craters and then formed a thick...
Effects of arsenic on spectral reflectance of greenhouse-grown soybean and loblolly pine
David Mouat, Judith Lancaster, Nancy Milton, M.M. Chesley, Jody Hatzell, William Lassetter, John Picone
1994, Conference Paper, Proceedings of the Tenth thematic conference on Geologic remote sensing: Exploration, environment, and engineering
Reconnaissance geologic mapping of a portion of the rain‐forest‐covered Guiana Shield, Northwestern Brazil, using SIR-B and digital aeromagnetic data
Fernando Pellon de Miranda, Anne E. McCafferty, James V. Taranik
1994, Geophysics (59) 733-743
This paper documents the result of an integrated analysis of spaceborne radar (SIR-B) and digital aeromagnetic data carried out in the heavily forested Guiana Shield. The objective of the research is to interpret the geophysical data base to its limit to produce a reconnaissance geologic map as an aid to...
Use of ground-based remotely sensed data for surface energy balance evaluation of a semiarid rangeland
M. S. Moran, William P. Kustas, A. Vidal, D.I. Stannard, J.H. Blanford, W. D. Nichols
1994, Water Resources Research (30) 1339-1349
An interdisciplinary field experiment was conducted to study the water and energy balance of a semiarid rangeland watershed in southeast Arizona during the summer of 1990. Two subwatersheds, one grass dominated and the other shrub dominated, were selected for intensive study with ground-based remote sensing systems and hydrometeorological instrumentation. Surface...
Surface energy balance estimates at local and regional scales using optical remote sensing from an aircraft platform and atmospheric data collected over semiarid rangelands
William P. Kustas, M. S. Moran, K.S. Humes, D.I. Stannard, P. J. Pinter Jr., L.E. Hipps, E. Swiatek, D.C. Goodrich
1994, Water Resources Research (30) 1241-1259
Remotely sensed data in the visible, near-infrared, and thermal-infrared wave bands were collected from a low-flying aircraft during the Monsoon '90 field experiment. Monsoon '90 was a multidisciplinary experiment conducted in a semiarid watershed. It had as one of its objectives the quantification of hydrometeorological fluxes during the...
Bald eagle nest site characteristics in South Florida
J. L. Curnutt, W. B. Robertson
1994, Journal of Wildlife Management (58) 218-221
Florida had nearly 20% of the coterminous United States population of nesting bald eagles (Haliaeetus leucocephalus) in 1990 (U.S. Fish and Wildl. Serv. 1991), yet the nesting ecology of bald eagles in subtropical environments has not been investigated. We examined nest site selection (n = 156 sites) by bald eagles...
Effects of weather and tides on feeding and flock positions of wintering redheads in the Chandeleur Sound, Louisiana
Thomas C. Michot, E. Barry Moser, Wayne Norling
1994, Hydrobiologia (279/280) 263-278
We studied the effects of weather and tides on percent feeding and flock positions of wintering redheads (Aythya americana Eyton) in the Chandeleur Sound, Louisiana, USA. Flock scans (n = 750) were made on 55 flocks from November through March of 1988–1989. The percent of the flock that...
Potential effects of development on flow characteristics of two streams in the Raritan River Basin, New Jersey
Thomas H. Barringer, Robert G. Reiser, Curtis V. Price
1994, Water Resources Bulletin (30) 283-295
Parts of the Raritan River basin in central New Jersey have undergone increasing development over the last several decades. The increasing population relies on the region's ground water and surface water sources for its residential, commercial, and industrial water supply. Urbanization, regionalized wastewater‐treatment facilities, stream channel alterations, and interbasin transfers...
Manson impact structure research program: Summary through February 1994
D. J. Roddy, Eugene Merle Shoemaker, R. R. Anderson, Richard M. Mitterer
1994, Conference Paper, Proceedings — International Symposium on the Observation of the Continental Crust through Drilling
No abstract available....
A seismotectonic model for the 300-kilometer-long eastern Tennessee seismic zone
C.A. Powell, G. A. Bollinger, M.C. Chapman, M.S. Sibol, A. C. Johnston, R. L. Wheeler
1994, Science (264) 686-688
Ten years of monitoring microearthquakes with a regional seismic network has revealed the presence of a well-defined, linear zone of seismic activity in eastern Tennessee. This zone produced the second highest release of seismic strain energy in the United States east of the Rocky Mountains during the last decade, when...
Crustal structure and composition of the southern Foothills Metamorphic Belt, Sierra Nevada, California, from seismic data
Kate Miller, Walter D. Mooney
1994, Journal of Geophysical Research B: Solid Earth (99) 6865-6880
The Foothills Metamorphic Belt is an accreted terrane consisting of Paleozoic and Mesozoic metamorphic rocks that separates the Great Valley from the Sierra Nevada batholith in northern and central California. Until recently, the only available geophysical data for this area were reconnaissance refraction surveys, and gravity and...
Sediment balance and flushing flow analysis: Trinity River case study
Robert T. Milhous
1994, Book, Proceedings of the American Geophysical Union Fourteenth Annual Hydrology Days
The use of sediment yield as one aspect of a flushing flow analysis is explored in a case study of the Trinity River in northwestern California. Understanding sediment balance can help in the development of a flushing flow need, but hydraulic analysis must also be done. The most important flushing...
Trends in stomatal density and 13C/12C ratios of Pinus flexilis needles during last glacial-interglacial cycle
Peter K. Van De Water, Steven W. Leavitt, J.L. Betancourt
1994, Science (264) 239-242
Measurements of stomatal density and δ13C of limber pine (Pinus flexilis) needles (leaves) preserved in pack rat middens from the Great Basin reveal shifts in plant physiology and leaf morphology during the last 30,000 years. Sites were selected so as to offset glacial to Holocene climatic differences and thus to...
Pesticides detected in surface waters and fish of the Red River of the North drainage basin
Mark E. Brigham
1994, Conference Paper, North Dakota Water Quality Symposium Proceedings
The Red River of the North drainage basin (herein referred to as Red River Basin) within the United States is a study unit under the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) program. The overall goals of this program, initiated to better define the status and trends of the...
