Persistency-field Eh-pH diagrams for sulfides and their application to supergene oxidation and enrichment of sulfide ore bodies
M. Sato
1992, Geochimica et Cosmochimica Acta (56) 3133-3156
At temperatures prevailing near the Earth's surface, metastable co-existence of chemical substances is common because chemical reactions that would directly lead to the attainment of thermody-namically most stable equilibria are often blocked by high activation energy barriers. The persistency of a metastable assemblage is then governed by alternative reaction paths...
Performance of nine external tags on hatchery-reared rainbow trout
K.W. McAllister, P. E. McAllister, R.C. Simon, J.K. Werner
1992, Transactions of the American Fisheries Society (121) 13-16
Earthquakes March-April 1992
Waverly J. Person
1992, Earthquakes & Volcanoes (USGS) (23) 227-234
The months of March and April were quite active seismically speaking. There was one major earthquake (7.0<M<8.0), a magnitude 7.1 shock on April 25 in northern California. Earthquake-related deaths were reported in Iran, Costa Rica, Turkey, and Germany....
Sediment bioaccumulation testing with fish
Michael J. Mac, Christopher J. Schmitt
G. Allen Burton Jr., editor(s)
1992, Book chapter, Sediment toxicity assessment
In this chapter, we discuss methods for conducting bioaccumulation bioassays with fish; the advantages and disadvantages of using fish rather than invertebrates; and problems associated with bioaccumulation testing, with a special emphasis on statistical treatment....
Effects of irrigation on seed production and vegetative characteristics of four moist-soil plants on impounded wetlands in California
D.M. Mushet, N.H. Euliss Jr., S.W. Harris
1992, Wetlands (12) 204-207
We examined the effects of irrigation on 4 moist-soil plants commonly managed for waterfowl in the Sacramento Valley, California. Irrigation resulted in taller and heavier swamp timothy (Heleochloa schoenoides), pricklegrass (Crypsis niliaca), and sprangletop (Leptochloa fasicularis). Barnyardgrass (Echinochloa crusgalli) grew taller in irrigated wetlands, but no significant difference in weight...
The status of loggerhead, Caretta caretta; Kemp's ridley, Lepidochelys kempi; and green, Chelonia mydas, sea turtles in U.S. waters: a reconsideration
C.K. Dodd Jr., R.A. Byles
1992, Marine Fisheries Review (53) 30-31
Abstract not supplied at this time...
Water quality changes and their relation to fishery resources in the upper Mississippi River
L. E. Holland Bartels
C.D. Becker, D.A. Neitzel, editor(s)
1992, Book chapter, Water quality in North American river systems
Despite a long history of human manipulation, the most dramatic changes in the upper Mississippi River occurred in the 1930s with construction of a lock and dam system to facilitate the commercial transport of commodities. In 1988, barge traffic through the system ranged from 7,500 tows per year at Lock...
The Etowah: a river under siege
N.M. Burkhead, J.D. Williams, B. J. Freeman
1992, Georgia Wildlife (2) 10-17
Abstract not supplied at this time...
The non-marine herpetofauna of Egmont Key, Hillsborough County, Florida
R. Franz, C.K. Dodd Jr., A.M. Bard
1992, Florida Scientist (55) 179-183
Abstract not supplied at this time...
Leporacanthicus triactis, a new loricariid fish from upper Orinoco River tributaries in Venezuela and Colombia (Pisces, Siluriformes, Loricariidae)
I.J. Isbrucker, H. Nijssen, L.G. Nico
1992, Die Aquarien- und Terrarienzeitschrift (DATZ) (46) 30-34
Abstract not supplied at this time...
Morphological cladistic study of coregonine fishes
G.R. Smith, T. N. Todd
1992, Polskie Archiwum Hydrobiologii (39) 479-490
A cladistic analysis of 50 characters from 26 taxa of coregonine fishes and two outgroup taxa yields a phylogenetic tree with two major branches, best summarized as two genera - Prosopium and Coregonus. Presence of teeth on the palatine, long maxillae, and long supra-maxillae are primitive, whereas loss of...
Density-dependent recruitment of the bloater (Coregonus hoyi) in Lake Michigan
Edward H. Brown Jr., Gary W. Eck
1992, Polskie Archiwum Hydrobiologii (39) 289-297
Density-dependent recruitment of the bloater (Coregonus hoyi) in Lake Michigan during and after recovery of the population in about 1977-1983 was best reflected in the fit of the Beverton-Holt recruitment function to age -1 and -2 recruits and estimated eggs of parents surveyed with trawls. A lower growth rate...
Rivulus tecminae, a new killifish from Amazonas Territory, Venezuela (Rivulidae, Cyprinodontiformes)
J.E. Thomerson, L.G. Nico, D.C. Taphorn
1992, Ichthyological Exploration of Freshwaters (2) 289-296
Abstract not supplied at this time...
Lake trout spawning habitat in the Six Fathom Bank-Yankee Reef lake trout sanctuary, Lake Huron
Thomas A. Edsall, Charles L. Brown, Gregory W. Kennedy, Thomas P. Poe
1992, Journal of Great Lakes Research (18) 70-90
Attempts to reestablish self-sustaining stocks of lake trout (Salvelinus namaycush) in the lower four Great Lakes, where the species was extinguished in the 1950s and 1960s, have been largely unsuccessful. To avoid many of the problems believed to be contributing to this failure, the fishery management community recently established several...
Fossil sea turtles from the early Pliocene Bone Valley Formation, central Florida
C.K. Dodd Jr., G.S. Morgan
1992, Journal of Herpetology (26) 1-8
No abstract available....
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...
Breeding population inventories and measures of recruitment
L.M. Cowardin, R.J. Blohm
D.J. Batt, A. D. Afton, M.G. Anderson, C.D. Ankney, Douglas H. Johnson, J.A. Kadlec, Gary L. Krapu, editor(s)
1992, Book chapter, Ecology and Management of Breeding Waterfowl
In this chapter we review the techniques used to measure two important parameters of waterfowl populations, size of breeding population and recruitment. If waterfowl are to be managed toward goals defined in terms of population sizes such as those in the recently signed North American Waterfowl Management Plan (U.S. Fish...
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...
U.S. Geological Survey Library classification system
R. Scott Sasscer
1992, Bulletin 2010_1992
The U.S. Geological Survey library classification system has been designed for an earth science library. It is a tool for assigning classification numbers to earth science and allied pure science library materials in order to collect these materials into related subject groups on the library shelves and arrange them alphabetically...
The boulder darter: a conservation challenge
N.M. Burkhead, J.D. Williams
1992, U.S. Fish and Wildlife Service Endangered Species Technical Bulletin (17) 4-6
Abstract not supplied at this time...
Determination of subsurface fluid contents at a crude-oil spill site
K.M. Hess, W.N. Herkelrath, H.I. Essaid
1992, Journal of Contaminant Hydrology (10) 75-96
Measurement of the fluid-content distribution at sites contaminated by immiscible fluids, including crude oil, is needed to better understand the movement of these fluids in the subsurface and to provide data to calibrate and verify numerical models and geophysical methods. A laboratory...
Classifying and mapping wetlands and peat resources using digital cartography
Cornelia C. Cameron, David A. Emery
1992, Conference Paper, ASTM Special Technical Publication
Digital cartography allows the portrayal of spatial associations among diverse data types and is ideally suited for land use and resource analysis. We have developed methodology that uses digital cartography for the classification of wetlands and their associated peat resources and applied it to a 1:24 000 scale map area...
Solution of the advection-dispersion equation by a finite-volume eulerian-lagrangian local adjoint method
R. W. Healy, T.F. Russell
1992, Conference Paper, Finite Elements in Water Resources, Proceedings of the International Conference
A finite-volume Eulerian-Lagrangian local adjoint method for solution of the advection-dispersion equation is developed and discussed. The method is mass conservative and can solve advection-dominated ground-water solute-transport problems accurately and efficiently. An integrated finite-difference approach is used in the method. A key component of the method is that the integral...
Energy, time, and channel evolution in catastrophically disturbed fluvial systems
A. Simon
1992, Geomorphology (5) 345-372
Two diverse fluvial systems show that with time, channels adjust such that the rate of energy dissipation is minimized. One fluvial system, characterized by high relief and coarse-grained sediment, was subjected to an explosive volcanic eruption; the other system, characterized by low relief and fine-grained sediment, was subjected to dredging...
Geochemical heterogeneity in a sand and gravel aquifer: Effect of sediment mineralogy and particle size on the sorption of chlorobenzenes
L.B. Barber II, E.M. Thurman, D.R. Runnells
McCalady Donald L., editor(s)
1992, Conference Paper, Journal of Contaminant Hydrology
The effect of particle size, mineralogy and sediment organic carbon (SOC) on solution of tetrachlorobenzene and pentachlorobenzene was evaluated using batch-isotherm experiments on sediment particle-size and mineralogical fractions from a sand and gravel aquifer, Cape Cod, Massachusetts. Concentration of SOC and sorption of chlorobenzenes increase with decreasing particle size. For...
