Winter population trends of selected songbirds
Terry L. Root, Larry McDaniel
Edward T. LaRoe, Gaye S. Farris, Catherine E. Puckett, Peter D. Doran, Michael J. Mac, editor(s)
1995, Book chapter, Our living resources: A report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems
Many studies have found significant changes, primarily declines, in populations of breeding birds throughout the United States. Most studies have focused on birds that migrate to the Neotropics for winter. Speculations about causes of observed declines have primarily implicated habitat fragmentation and loss (e.g. deforestation) in Central and South America....
Effect of predation by Sacramento squawfish (Ptychocheilus grandis) on habitat choice of California roach (Lavinia symmetricus) and rainbow trout (Oncorhynchus mykiss) in artificial streams
Larry R. Brown, Anne M. D. Brasher
1995, Canadian Journal of Fisheries and Aquatic Sciences (52) 1639-1646
We studied the effects of predatory Sacramento squawfish (Ptychocheilus grandis) on habitat choice of juvenile California roach (Lavinia symmetricus), adult roach, and juvenile rainbow trout (Oncorhynchus mykiss) in artificial streams. In single-prey trials, the proportion of fish found in pool habitat declined in the presence of squawfish for juvenile roach...
Tertiary volcanic rocks from the southern Pannonian Basin, Croatia
Jakob J. Pamic, Edwin H. McKee, Thomas D. Bullen, Marvin A. Lanphere
1995, International Geology Review (37) 259-283
The Tertiary volcanic rocks of the southern part of the Pannonian Basin are related to a sequence of tectonic events that occurred along the northern margin of the Dinarides when subduction ceased and after uplift of the region in middle Eocene time. The oldest rocks are andesites and dacites erupted...
Geology of Triton
S.K. Croft, J.S. Kargel, Randolph L. Kirk, J. M. Moore, P.M. Schenk, R.G. Strom
Dale P. Cruikshank, editor(s)
1995, Book chapter, Neptune and Triton
Triton, with a diameter of ≡2700 km, is Neptune's only planet-class satellite. The complexity of Triton's surface and the variety of surface features is unequaled among the satellites of the solar system. From a geologic viewpoint, some of Triton's features have apparently familiar morphologies and general interpretative agreement exists. However,...
Simulation modeling in a workshop format
Gregor T. Auble, D. B. Hamilton, J. E. Roelle, A. K. Andrews
1995, Book chapter, Complex ecology: The part-whole relation in ecosystems
No abstract available....
Triton's plumes: Discovery, characteristics, and models
Randolph L. Kirk, Laurence A. Soderblom, R. H. Brown, S. W. Kieffer, J.S. Kargel
Dale P. Cruikshank, editor(s)
1995, Book chapter, Neptune and Triton
This chapter presents (1) basic observations and characteristics of Triton's plumes (scale, geometry, optical properties, and temporal behavior); (2) the current best estimates of other parameters that can be derived directly or inferred from the observations (plume duration, wind velocities, particle properties, mass fluxes, energy requirements, and total erupted mass);...
Seagrass distribution in the Northern Gulf of Mexico
Lawrence R. Handley
1995, Book chapter, Our living resources: A report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems
Seagrass ecosystems are widely recognized as some of the most productive benthic habitats in estuarine and nearshore waters of the gulf coast. Seagrass meadows provide food for wintering waterfowl and important spawning and foraging habitat for several species of commercially important finfish and shellfish. Physical structure provided by...
Biodiversity: a new challenge
Edward T. LaRoe
1995, Book chapter, Our Living Resources: A report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems
Resource managers at many state and federal agencies are in the middle of a fundamental change in the practice and objectives of conservation. Traditional management has been directed toward maintaining, usually for harvest purposes, populations of individual species such as ducks, deer, or salmon. Increasingly, however, resource managers are recognizing...
Land subsidence in drained histosols and highly organic mineral soils of California
Stuart Rojstaczer, Steven J. Deverel
1995, Soil Science Society of America Journal (59) 1162-1167
This study was conducted to determine historical trends in subsidence in the Sacramento-San Joaquin Delta and their environmental controls. In the western Delta, average subsidence rates were 2.3 cm yr-1 from 1910 to 1.5 cm yr-1 from 1952 to 1988. Spatially variability in subsidence was correlated with organic matter content...
Geohydrologic framework, historical development of the ground-water system and general hydrologic and water-quality condiitons in 1990, south San Francisco Bay and peninsula area, California
John L. Fio, David A. Leighton
1995, Water Supply Paper 2467
No abstract available....
Evaluation of viscoplastic slope movement based on triaxial tests
Wylie W. -H. Wong, Carlton L. Ho, Richard M. Iverson, Cynthia Hovind
1995, Book chapter, Clay and shale slope instability
Viscoplastic soil parameters are used in a nonlinear viscoplastic constitutive model to predict time-dependent displacement of slow-moving landslides. The viscoplastic material parameters are determined by a novel method that uses a standard triaxial apparatus. This method employs data obtained from consolidated drained triaxial tests and consolidated drained stress-controlled strain-rate tests....
Disease considerations for waterfowl managers
Milton Friend
1995, Report, Waterfowl habitat restoration enhancement and management in the Atlantic Flyway
No abstract available....
Northern Pintail (Anas acuta)
J. E. Austin, M. R. Miller
A. Poole, F. Gill, editor(s)
1995, Book chapter, The Birds of North America
The Northern Pintail is a medium-sized dabbling duck of slender, elegant lines and conservative plumage coloration. It is circumpolar in distribution and abundant in North America, with core nesting habitat in Alaska and the Prairie Pothole Region of southern Canada and the northern Great Plains. Breeders favor shallow wetlands interspersed...
Applications of the transient tracers tritium/helium-3, and chlorofluorocarbons for tracing and age-dating yound ground water: Field examples from the USA and Germany
S. Drenkard, Niel Plummer, Eurybiades Busenberg, P. Schlosser, M. Stute, H. Dorr
1995, Book chapter, Contaminated soil '95: Soils & environment
The transient tracers tritium/helium-3 (3H/3He) and chlorofluorocarbons (CFC-11, CFC-12, CFC-113) are well suited for tracing and age-dating young ground water. Their detection in ground water indicates waters recharged within the past 30 (3H/3He, CFC-113) to 50 (CFC-11, CFC-12) years, or ground water mixtures that contain at least a portion of...
Jurassic tectonics of northeastern Nevada and northwestern Utah from the perspective of barometric studies
David M. Miller, Thomas D. Hoisch
Cathy Busby, editor(s)
1995, Book chapter, Jurassic magmatism and tectonics of the North American cordillera
Jurassic tectonism in the northeastern Great Basin produced varied structures, many closely associated with widespread magmatism at ca. 155–165 Ma and with local metamorphism. Many of the plutons are of suitable mineralogy for Al-in-hornblende barometry, providing the potential for depth data. We have studied conditions of metamorphism in the Pilot...
Infectious and parasitic diseases of the gray wolf and their potential effects on wolf populations in North America
C. J. Brand, M.J. Pybus, W.B. Ballard, R. O. Peterson
Ludwig N. Carbyn, Steven H. Fritts, Dale R. Seip, editor(s)
1995, Conference Paper, Ecology and conservation of wolves in a changing world: Proceedings of the 2nd North American Symposium on Wolves
Numerous infections and parasitic diseases have been reported for the gray wolf, including more than 10 viral, bacterial, and mycotic disease and more than 70 species of helminths and ectoparasites. However, few studies have documented the role of diseases in population dynamics. Disease can affect wolf populations directly by causing...
Interpreting spatial profiles of concentration in acid mine drainage streams
R. E. Broshears, Briant A. Kimball, Robert L. Runkel
W. R. Hotchkiss, J. S. Downey, E. D. Gutentag, editor(s)
1995, Book chapter, Water resources at risk, Denver, Colorado
No abstract available. ...
Feeding competition between larval lake whitefish and lake herring
Jacqueline F. Savino, Patrick L. Hudson
1995, Book chapter, Biology and Management of Coregonid Fishes -- 1993
The potential for competition for food between larval lake whitefish (Coregonus clupeaformis) and lake herring (C. artedi) 1- to 8-wk of age was explored in a series of 1-h laboratory feeding studies. Feeding started at 2-wk post-hatch. Learning and fish size appear to be more important than prey density at...
Bibliography of reports from the Volcano Hazards Program, Water Resources Division, 1980-1994
Water Resources Division, U.S. Geological Survey
1995, Open-File Report 95-131
No abstract available....
Preliminary development of the LBL/USGS three-dimensional site-scale model of Yucca Mountain, Nevada
1995, Book
A three-dimensional model of moisture flow within the unsaturated zone at Yucca Mountain is being developed at Lawrence Berkeley Laboratory (LBL) in cooperation with the U.S. Geological Survey (USGS). This site-scale model covers and area of about 34 km2 and is bounded by major faults to the north, east and...
Genetic contribution of hatchery fish to walleye stocks in Saginaw Bay, Michigan
Thomas N. Todd, Robert C. Haas
Harold L. Schramm Jr., Robert G. Piper, editor(s)
1995, Report, Uses and effects of cultured fishes on aquatic ecosystems
Stocks of walleye (Stizostedion vitreum) were severely depressed in Saginaw Bay in the 1970s. In 1979, the Michigan Department of Natural Resources began intensive stocking of walleye fingerlings to bolster fish populations. Subsequent to stocking, the walleye fishery has recovered. The study objective was to determine if...
Timing of emplacement of the Haypress Creek and Emigrant Gap plutons: Implications for the timing and controls of Jurassic orogenesis, northern Sierra Nevada, California
Gary H. Girty, Richard E. Hanson, Melissa S. Girty, Richard A. Schweickert, David S. Harwood, Aaron S. Yoshinobu, Kevin A. Bryan, June E. Skinner, Chris A. Hill
David M. Miller, Cathy Busby, editor(s)
1995, Book chapter, Jurassic magmatism and tectonics of the North American cordillera
Pre-Cretaceous rocks in the northern Sierra Nevada are subdivided from west to east into the Smartville, central, Feather River peridotite, and eastern belts. Cretaceous and younger sedimentary rocks form the western boundary of the Smartville belt, but various reverse-fault segments of the Foothills fault system separate the other belts. The...
Bermuda solution pipe soils: A geochemical evaluation of eolian parent materials
Stanley R. Herwitz, Daniel R. Muhs
1995, Book chapter, Terrestrial and shallow marine geology of the Bahamas and Bermuda
No abstract available....
The value of postaudits in groundwater model applications
Leonard F. Konikow
1995, Book chapter, Groundwater models for resources analysis and management
No abstract available....
Relations between stream temperature discharge, and stream/groundwater interaction along several mountain streams
James Constantz, G. Zellweger
B.T. Guy, J. Bernard, editor(s)
1995, Book chapter, Mountain hydrology
No abstract available....
