Distribution, numbers, and habitat of Bristle-thighed Curlews (Numinous tahitiensis) on Rangiroa atoll
Robert E. Gill Jr., Roland L. Redmond
1992, Notornis (39) 17-26
We assessed the numbers, distribution, and habitat of Bristle-tithed Curlews (Numinous tahitiensis) on Rangiroa Atoll, Tuamotu Archipelago, during a visit in April 1988. We estimated a total of 250-350 curlews on the atoll. These birds were seen only on the southern and western rims, where they were most common on...
Reporting of nitrogen-isotope abundances (Technical Report)
Tyler B. Coplen, H.R. Krouse, J.K. Bohlke
1992, Pure and Applied Chemistry (64) 907-908
To eliminate possible confusion in the reporting of nitrogen-isotope analyses, the Commission on Atomic Weights and Isotopic Abundances recommends that the value 272 be employed for the 14N/15N value of N2 in air for calculating atom percent 15N from measured δ15N values....
Reply to comment by G. de Marsily, P. Combes, and P. Goblet on "Ground-water models cannot be validated"
J.D. Bredehoeft, Leonard F. Konikow
1992, Advances in Water Resources (15) 371-372
No abstract available....
Solution properties of almandine-pyrope garnet as determined by phase equilibrium experiments
A.M. Koziol, S.R. Bohlen
1992, American Mineralogist (77) 765-773
The thermodynamic mixing properties of almandine-pyrope garnet were derived from phase equilibrium experiments at temperatures of 900 and 1000??C and pressures from 8 to 14 kbar. Almandine has essentially ideal behavior in almandine-pyrope garnet over the composition range Alm89-Alm61 at the above experimental conditions. In all experimental products a systematic...
Aspects of the ecology of an isolated brook trout (Salvelinus fontinalis) population in Fairfax County, Virginia
J.E. Lovich
1992, Journal of the Pennsylvania Academy of Science (65) 107-111
Depressions and other lake-floor morphologic features in deep water, southern Lake Michigan
Steven M. Colman, D.S. Foster, D.W. Harrison
1992, Journal of Great Lakes Research (18) 267-279
The most common features are subcircular depressions, commonly compound, that are irregularly distributed across the lake floor. The depressions are most common in the southern basin of the lake where lacustrine sediments are more than a few meters thick, corresponding to water depths greater than about 90 m. We have...
Modelling crustacean fisheries: effects of parasites on management strategies
A. M. Kuris, K. D. Lafferty
1992, Canadian Journal of Fisheries and Aquatic Sciences (49) 327-336
Species dominance and equitability: patterns in Cenozoic foraminifera of eastern North America
T. G. Gibson, E.E. Hill
1992, Journal of Foraminiferal Research (22) 34-51
Species dominance in benthonic foraminifera, represented by percent of the assemblage composed of the single most abundant species, shows little change in observed range of values from shallow into deep-marine waters in 1005 samples from the Gulf of Mexico, Atlantic, and Arctic margins of North America. This finding contrasts with...
Paleodrainages of the Eastern Sahara: the Nile problem and its relevance to the Chad Basin
H. Faure, C. S. Breed, J.F. McCauley
1992, Journal of African Earth Sciences (14) 153-154
No abstract available....
Preliminary evidence for the involvement of budding bacteria in the origin of Alaskan placer gold
J.R. Watterson
1992, Geology (20) 315-318
Lacelike networks of micrometre-size filiform gold associated with Alaskan placer gold particles are interpreted as low-temperature pseudomorphs of a Pedomicrobium-like budding bacterium. Submicron reproductive structures (hyphae) and other morphological features similar to those of Pedomicrobiummanganicum occur as detailed three-dimensional facsimiles in high-purity gold in and on...
Modeling of ancient climate from deuterium content of water in volcanic glass
I. Friedman, J. Gleason, R. Wilcox, A. Warden
1992, Quaternary International (13-14) 201-203
The explosive nature of the eruptions that produced rhyolitic tephras resulted in the ash being distributed over large areas. This ash, within a few thousand years after deposition, incorporated relatively large amounts of environmental water (up to 3.5%) into the glass structure. This hydration water is shown to retain its...
Organic control on shoreface stacking patterns: bogged down in the mire
P.J. McCabe, K.W. Shanley
1992, Geology (20) 741-744
In ever-wet climates, raised mires that are elevated several metres above flood levels can cover significant portions of coastal plains. Because peat accumulation may keep pace with moderate rates of base-level rise, the development of raised mires may reduced the areal extent of...
The aqueous photolysis of α-pinene in solution with humic acid
Marvin C. Goldberg, Kirkwood M. Cunningham, George R. Aiken, Eugene R. Weiner
1992, Journal of Contaminant Hydrology (9) 79-89
Terpenes are produced abundantly by environmental processes but are found in very low concentrations in natural waters. Aqueous photolysis of solutions containing α-pinene, a representative terpene, in the presence of humic acid resulted in degradation of the pinene. Comparison of this reaction to photolysis of α-pinene in the presence of...
Public-domain-software solution to data-access problems for numerical modelers
Harry Jenter, Richard Signell
1992, Conference Paper
Unidata's network Common Data Form, netCDF, provides users with an efficient set of software for scientific-data-storage, retrieval, and manipulation. The netCDF file format is machine-independent, direct-access, self-describing, and in the public domain, thereby alleviating many problems associated with accessing output from large hydrodynamic models. NetCDF has programming interfaces in both...
Fault stability under conditions of variable normal stress
James H. Dieterich, Mark F. Linker
1992, Geophysical Research Letters (19) 1691-1694
The stability of fault slip under conditions of varying normal stress is modeled as a spring and slider system with rate- and state-dependent friction. Coupling of normal stress to shear stress is achieved by inclining the spring at an angle, ø, to the sliding surface. Linear...
Multiple tube sampler for benthic and pelagic invertebrates in shallow wetlands
N.H. Euliss Jr., G.A. Swanson, J. MacKay
1992, Journal of Wildlife Management (56) 186-191
Sampling devices that minimize bias and function in aquatic habitats used by waterfowl are needed. We devised a multiple tube sampling device for quantitative sampling of small (< 3 cm) aquatic invertebrates in wetlands. The sampler reduced bias associated with sampling macroinvertebrates that utilize the benthic-pelagic interface because it simultaneously...
Plant habitat dynamics in a perched dune system adjacent to Lake Superior, Alger County, Michigan
W. Loope, K. McEachern, J. Schultz
1992, Bulletin of the Ecological Society of America (73) 254-254
No abstract available at this time...
Natural gemstones
Water Resources Division, U.S. Geological Survey
1992, Report
Hydrothermal ore-forming processes in the light of studies in rock- buffered systems: II. Some general geologic applications
J.J. Hemley, J.P. Hunt
1992, Economic Geology (87) 23-43
The experimental metal solubilities for rock-buffered hydrothermal systems, reported by Hemley et al. (1992), provide important insights into the acquisition, transport, and deposition of metals in real hydrothermal systems that produced base metal ore deposits. Water-rock reactions that determine pH, together with total chloride and changes in temperature and fluid...
Stable isotope study of water-rock interaction and ore formation, Bayhorse base and precious metal district, Idaho
R.R. Seal II, R. O. Rye
1992, Economic Geology (87) 271-287
The Bayhorse base and precious metal district is situated east of the Idaho batholith in south-central Idaho. The ores occur near the Nevada Mountain granitic stock as veins cutting the lower Paleozoic Ramshorn Slate and the Garden Creek Phyllite, and as fillings around breccia fragments within the Bayhorse Dolomite. The...
Predation of the zebra mussel (Dreissena polymorpha) by freshwater drum in western Lake Erie
John R. P. French III, Michael T. Bur
Thomas F. Nalepa, Donald W. Schloesser, editor(s)
1992, Book chapter, Zebra mussels: Biology, impacts, and control
Environmental and economic problems associated with the colonization of zebra mussels (Dreissena polymorpha) in western Lake Erie created a need to investigate control mechanisms. Predation by fishes is one potential means of control, but predation on zebra mussels by native fishes in Lake Erie is unknown. The freshwater...
The San Andreas Fault
Sandra S. Schulz, Robert E. Wallace
1992, Report
Chesapeake Bay striped bass: the consequences of habitat degradation
P.J. Rago
R.H. Stroud, editor(s)
1992, Book chapter, Stemming the Tide of Coastal Fish Habitat Loss
No abstract available at this time...
Design and performance of a horizontal, axial-flow, water circulator
R.D. Howerton, C.E. Boyd, B.J. Watten
1992, Conference Paper, Research and Review: A Compilation of Abstracts of Research on Channel Catfish
No abstract available at this time...
Chemical regulation of spawning in the zebra mussel (Dreissena polymorpha)
Jeffrey L. Ram, S. Jerrine Nichols
Thomas F. Nalepa, Donald W. Schloesser, editor(s)
1992, Book chapter, Zebra mussels: Biology, impacts, and control
Previous literature suggests that spawning in bivalves is chemically regulated, both by environmental chemical cues and by internal chemical mediators. In a model proposed for zebra mussels, chemicals from phytoplankton initially trigger spawning, and chemicals associated with gametes provide further stimulus for spawning. The response to environmental chemicals...
