Recovery efficiency from single-well injection/recovery tests in a limestone aquifer of high secondary porosity
Vicente Quinones-Aponte
1988, Conference Paper, Proceedings of the American Society of Civil Engineers, Irrigation and Drainage Division, Artificial Recharge of Ground Water, International Symposium
The ecology of the soft-bottom benthos of San Francisco Bay: a community profile
Frederic H. Nichols, Mario M. Pamatmat
1988, U.S. Fish and Wildlife Service Biological Report 85(7.23)
This profile, part of a series of profiles concerning coastal habitats of the United States, is a detailed examination of the soft-bottom benthos of San Francisco Bay. A U.S. Fish and Wildlife Service and California Department of Fish and Game report (1979) entitled "Protection and Restoration of San Francisco Bay...
Conservation of North American rallids
William R. Eddleman, Fritz L. Knopf, Brooke Manley, Frederic A. Reid, Richard Zembal
1988, The Wilson Bulletin (100) 458-475
The Rallidae are a diverse group in their habitat selection, yet most North American species occur in or near wetlands As a consequence, most species are subject to habitat enhancement or perturbation from waterfowl management programs. The overall effects of these management programs relative to rallid conservation have...
Toxicity of organic and inorganic selenium to mallard ducklings
Gary Heinz, David J. Hoffman, Lyn G. Gold
1988, Archives of Environmental Contamination and Toxicology (17) 561-568
The toxicity of selenomethionine and sodium selenite to mallard ducklings (Anas platyrhynchos) was measured by feeding each form from hatching to six weeks of age at dietary concentrations of 0, 10, 20, 40, and 80 ppm selenium. At 80 ppm selenium, sodium selenite caused 97.5% mortality by six weeks and...
Trace element residues in bluegills and common carp from the lower San Joaquin River, California, and its tributaries
Michael K. Saiki, Thomas W. May
1988, Science of the Total Environment (74) 199-217
Whole-body samples of bluegills (Lepomis macrochirus) and common carp (Cyprinus carpio) from the San Joaquin River and two tributaries (Merced River and Salt Slough) were analyzed to determine if the concentrations of any of nine elements were elevated as a result of exposure of the fish to agricultural subsurface (tile)...
The design and use of a hydraulic potentiomanometer for direct measurement of differences in hydraulic head between groundwater and surface water
Thomas C. Winter, James W. LaBaugh, Donald O. Rosenberry
1988, Limnology and Oceanography (33) 1209-1214
The hydraulic potentiomanometer described herein consists of a potentiometer connected to a manometer by a flexible tube. The device is used to directly measure the direction of seepage as well as the hydraulic-head difference between groundwater and surface water. The device works most effectively in sandy materials. For accurate measurements...
Cobalt in ferromanganese crusts as a monitor of hydrothermal discharge on the Pacific sea floor
F.T. Manheim, C.M. Lane-Bostwick
1988, Nature (335) 59-62
Ferromanganese oxide crusts, which accumulate on unsedimented surfaces in the open ocean1–6, derive most of their metal content from dissolved and particulate matter in ambient bottom water7,8, in proportions modified by the variable scavenging efficiency of the oxide phase for susceptible ions9. They differ in this respect from abyssal nodules,...
Pleistocene Proboscideans and Michigan salt deposits
A.J. Holman, L.M. Abraczinskas, D.B. Westjohn
1988, National Geographic Research (4) 4-5
No abstract available....
Effects of spatial orientation of multiple plate artificial substrates on invertebrate colonization
K. V. Slack, R. F. Ferreira, R.C. Averert, S.S. Kennelly
1988, Journal of the American Water Resources Association (24) 781-789
Jumbo multiple plate samplers were suspended in a river at 0.3 and 1 m depth in one of three orientations: interplate spaces closed to downwelling light and open to flow, open to light and flow, or open to light and closed to flow. Mean numbers of colonizing taxa and individuals...
Assessment of sampling stability in ecological applications of discriminant analysis
Byron K. Williams, Kimberly Titus
1988, Ecology (69) 1275-1285
A simulation study was undertaken to assess the sampling stability of the variable loadings in linear discriminant function analysis. A factorial design was used for the factors of multivariate dimensionality, dispersion structure, configuration of group means, and sample size. A total of 32 400 discriminant analyses were conducted, based on...
A broad-band, wide-dynamic range, strong-motion array near Parkheld, California, USA for measurement of acceleration and volumetric strain
Roger D. Borcherdt, Malcolm J. S. Johnston, Thomas Noce, Gary Glassmoyer, Douglas Myren
1988, Conference Paper, Proceedings of the ninth World Conference on Earthquake Engineering Tokyo-Kyoto, Japan, 1988
No abstract available....
Genetic variability in the Florida manatee (Trichechus manatus)
Leroy R. McClenaghan Jr., Thomas J. O'Shea
1988, Journal of Mammalogy (69) 481-488
Tissue was obtained from 59 manatee (Trichechus manatus) carcasses salvaged from 20 counties in Florida. Allozyme phenotypes at 24 structural loci were determined by gel electrophoresis. Averages for the proportion of polymorphic loci and mean heterozygosity were 0.300 (range, 0.167-0.417) and 0.050 (range, 0.028-0.063), respectively. These estimates are equivalent to...
User's guide to the wetland creation/restoration data base
J. Muhlenbruck, K.M. Manci, K. Schneller-McDonald
1988, Report
No abstract available....
Agonistic asymmetries and the foraging ecology of Bald Eagles
Richard L. Knight, Susan Knight Skagen
1988, Ecology (69) 1188-1194
We investigated the effects of both asymmetries and differing food levels on contest outcomes of wintering Bald Eagles (Haliaeetus leucocephalus) feeding on chum salmon (Oncorhynchus keta) carcasses. Large eagles, regardless of age, were more successful in pirating than smaller eagles. Small pirating eagles were usually unsuccessful unless they were adults...
Tunnel-construction methods and foraging path of a fossorial herbivore, Geomys bursarius
Douglas C. Andersen
1988, Journal of Mammalogy (69) 565-582
The fossorial rodent Geomys bursarius excavates tunnels to find and gain access to belowground plant parts. This is a study of how the foraging path of this animal, as denoted by feeding-tunnel systems constructed within experimental gardens, reflects both adaptive behavior and constraints associated with the fossorial lifestyle. The principal...
The relationship between habitat quality and mound building by a fossorial rodent, Geomys bursarius
Daniel W. Sparks, Douglas C. Andersen
1988, Journal of Mammalogy (69) 583-587
No abstract available....
Comment and reply on "Sediment-yield history of a small basin in southern Utah, 1937-1976: Implications for land management and geomorphology"
E.B. Nuhfer, Richard Hereford
1988, Geology (16) 759-760
No abstract available....
Book review--"Coupled processes associated with nuclear waste repositories"
D. Kirk Nordstrom
1988, Geochimica et Cosmochimica Acta (52) 2185-2185
No abstract available....
Stochastic analysis of solute arrival time in heterogeneous porous media
Allen M. Shapiro, V.D. Cvetkovic
1988, Water Resources Research (24) 1711-1718
Longitudinal advective solute movement in heterogeneous porous media is investigated by considering the solute arrival time at a plane perpendicular to the mean fluid velocity. The moments of the solute arrival time are defined in terms of the stochastic properties of a statistically anisotropic hydraulic conductivity field. The flux‐averaged concentration...
Use of the instream flow incremental methodology to evaluate influences of microhabitat variability on trout populations in four Colorado Streams
Ken D. Bovee
1988, Book, Western Proceedings: 68th Annual Conference of the Western Association of Fish and Wildlife Agencies
No abstract available....
Selenium teratogenesis in natural populations of aquatic birds in central California
David J. Hoffman, Harry M. Ohlendorf, Thomas W. Aldrich
1988, Archives of Environmental Contamination and Toxicology (17) 519-525
The frequency and types of malformations are described that were encountered during the spring of 1983 in a natural population of aquatic birds exposed to agricultural drainwater ponds and food items containing high concentrations of selenium in central California. A total of 347 nests of aquatic birds containing 1,681 eggs...
Mortality patterns and population sinks for Yellowstone grizzly bears, 1973-1985
R.R. Knight, B.M. Blanchard, L.L. Eberhardt
1988, Wildlife Society Bulletin (16) 121-125
No abstract available....
Status of dugongs in waters around Palau
Galen B. Rathbun, Robert L. Brownell Jr., Katherine Ralls, John Engbring
1988, Marine Mammal Science (4) 265-270
The dugong, Dugong dugon, is widely distributed throughout the Indo-Pacific region in shallow tropical and subtropical waters (Nishiwaki and Marsh 1985).The International Union for Conservation of Nature and Natural Resources lists the species as vulnerable (Thornback and Jenkins 1982), as it is severely depleted or extinct in many parts of...
An exploration geochemical technique for the determination of preconcentrated organometallic halides by ICP-AES
J. M. Motooka
1988, Applied Spectroscopy (42) 1293-1296
An atomic absorption extraction technique which is widely used in geochemical exploration for the determination of Ag, As, Au, Bi, Cd, Cu, Mo, Pb, Sb, and Zn has been modified and adapted to a simultaneous inductively coupled plasma-atomic emission instrument. The experimental and operating parameters are described for the preconcentration...
Duck nest success in the prairie pothole region
Albert T. Klett, Terry L. Shaffer, Douglas H. Johnson
1988, Journal of Wildlife Management (52) 431-440
We estimated nest success of mallard (Anas platyrhynchos), gadwall (A. strepera), blue-winged teal (A. discors), northern shoveler (A. clypeata), and northern pintail (A. acuta) for 5 regions in North Dakota, South Dakota, and Minnesota, for 1-3 periods between 1966 and 1984, and for 8 habitat classes. We obtained composite estimates...
