Effect of loading density of sockeye salmon, Oncorhynchus nerka (Walbaum), eggs in incubation boxes on mortality caused by infectious haematopoietic necrosis
D. Mulcahy, K. Bauersfeld
1983, Journal of Fish Diseases (6) 189-193
Infectious haematopoietic necrosis (IHN) can cause massive mortalities of sockeye salmon, Oncorhynchus nerka (Walbaum), cultured in hatcheries. One method of enhancing sockeye salmon populations is to use a streamside egg incubation box from which the fry are automatically released into the stream as they emerge from the gravel. In this...
Land use and land cover digital data
Robin G. Fegeas, Robert W. Claire, Stephen C. Guptill, K. Eric Anderson, Cheryl A. Hallam
1983, Open-File Report 82-22
The discipline of cartography is undergoing a number of profound changesthat center on the emerging influence ofdigital manipulation and analysis ofdata for the preparation of cartographic materials and for use in geographic information systems. Operational requirements have led to the development by the USGS National Mapping Division of several documents...
Feeding habitats of nesting wading birds: Spatial use and social influences
R. Michael Erwin
1983, The Auk (100) 960-970
In an effort to relate social interactions to feeding-habitat use, I observed six species of wading birds near a major colony site in coastal North Carolina. Three spatial scales of habitat use were considered: the general orientation to and from the colony (coarsest level), the habitat "patch," and (at the...
Effects of roads on small mammals
L.W. Adams, A. D. Geis
1983, Journal of Applied Ecology (20) 403-415
(1) The study was designed to determine the effects of roads on the diversity, spatial distribution, and density of small mammals. (2) Forty species of small mammal (5859 individuals) were snap-trapped in the study. Data resulted from 144 360 trap-nights of effort for an average of 4.06 captures per 100...
Nest site characteristics of three coexisting Accipiter hawks in northeastern Oregon
K.R. Moore, Charles J. Henny
1983, Raptor Research (17) 65-76
Habitat data were evaluated at 34 Goshawk (Accipiter gentilis), 31 Cooper's Hawk (A. cooperii), and 15 Sharp-shinned Hawk (A. striatus) nest sites in coniferous forests of northeastern Oregon. Crown volume profiles indicate a strong similarity in vegetative structure at nest sites of cooperii and striatus; both commonly nest in...
Impacts of forest herbicides on wildlife: Toxicity and habitat alteration
M.L. Morrison, E. Charles Meslow
1983, Transactions of the North American Wildlife and Natural Resources Conference (48) 175-185
This paper begins with a review of both laboratory and field studies on tbe possible direct toxic effects of herbicides on terrestrial vertebrates, primarily birds and mammals. Alteration of the palatability of forage and changes in reproductive success are also discussed. Emphasis is placed on the use of...
Estimating taxonomic diversity, extinction rates, and speciation rates from fossil data using capture-recapture models
J.D. Nichols, K. H. Pollock
1983, Paleobiology (9) 150-163
Methods currently used to estimate taxonomic extinction probabilities from fossil data generally assume that the probability of encountering a specimen in a particular stratum, given that the taxon was extant in the time period and location represented by the stratum, either equals 1.0 or else is a constant for all...
Summary of Available Data on Surface Water, State of Hawaii - Volume 2: General Information and Station List for the Islands of Oahu, Molokai, Maui and Hawaii
Iwao Matsuoka
1983, Open-File Report 81-1056-A
Physiological effects of toxic substances on wildlife species
S. D. Haseltine
Peter Kacmar, J. Legath, editor(s)
1983, Book chapter, Collected Reports from the Czechoslovak-American Symposium on Toxic Effects of Chemical Environmental Contaminants upon Production and Reproduction Ability in Free-Living Animals (held October 3-4, 1983)
Study of the physiological effects of contaminants on wildlife species has expanded as more sophisticated medical techniques are adapted to wildlife and as the mode of action of new classes of pesticides increase the number of organ systems which may be sublethally or lethally impacted. This paper summarizes some of...
Effects of the insecticide, orthene, on unconfined populations of the meadow vole (Microtus pennsylvanicus). I. Capture/recapture procedures; II. Residues and cholinesterase inhibition
David A. Jett
1983, Book
In 1982 and 1983. the population demography of M. pennsylvanicus was not altered significantly by single or double applications of Orthene. Although inconsistencies in population size, survival, and recruitment were not explained by differences between control and experimental grids in breeding, emigration, interspecific competition, or pesticide-induced mortality, there may...
Alternate data sources for soil surveys on rangeland
Emil H. Horvath, A. A. Klingebiel, D. G. Moore, E. A. Fosnight
1983, Open-File Report 83-880
Soil information is an essential theme in a digital information base for land management and resource monitoring, but public land management agencies seldom have detailed soil maps available for all of the area under their administration. Most of these agencies conduct soil surveys on a scheduled basis, but escalating costs...
Paleoclimatic analyses of middle Eocene through Oligocene planktic foraminiferal faunas
G. Keller
1983, Palaeogeography, Palaeoclimatology, Palaeoecology (43) 73-94
Quantitative faunal analyses and oxygen isotope ranking of individual planktic foraminiferal species from deep sea sequences of three oceans are used to make paleoceanographic and paleoclimatic inferences. Species grouped into surface, intermediate and deep water categories based on δ18O values provide evidence of major changes in water-mass stratification, and individual...
An ion-selective electrode method for determination of chlorine in geological materials
P. J. Aruscavage, E.Y. Campbell
1983, Talanta (30) 745-749
A method is presented for the determination of chlorine in geological materials, in which a chloride-selective ion electrode is used after decomposition of the sample with hydrofluoric acid and separation of chlorine in a gas-diffusion cell. Data are presented for 30 geological standard materials. The relative standard deviation of the...
Hydrology of area 54, northern Great Plains, and Rocky Mountain coal provinces, Colorado and Wyoming
Gerhard Kuhn, P. D. Daddow, G. S. Craig
1983, Open-File Report 83-146
A nationwide need for information characterizing hydrologic conditions in mined and potential mine areas has become paramount with the enactment of the Surface Mining Control and Reclamation Act of 1977. This report, one in a series covering the coal provinces nationwide, presents information thematically by describing single hydrologic topics through...
Land use and land cover digital data
Robin G. Fegeas, Robert W. Claire, Stephen C. Guptill, Eric K. Anderson, Cheryl A. Hallam
1983, Circular 895-E
Water quality of the Yadkin-Pee Dee River system, North Carolina— Variability, pollution loads, and long-term trends
Douglas Harned, Dann Meyer
1983, Water Supply Paper 2185-E
Interpretation of water quality data collected by the U.S. Geological Survey and the North Carolina Department of Natural Resources and Community Development, for the Yadkin-Pee Dee River system, has identified water quality variations, characterized the current condition of the river in reference to water quality standards, estimated the degree of...
Preliminary mineralogic, fluid inclusion, and stable isotope study of the Mahd adh Dhahab gold mine, Kingdom of Saudi Arabia
Robert O. Rye, W. E. Hall, C. G. Cunningham, G.K. Czamanske, A.M. Afifi, J. S. Stacey
1983, Open-File Report 83-291
The Mahd adh Dhahab mine, located about 280 km northeast of Jiddah, Kingdom of Saudi Arabia, has yielded more than 2 million ounces of gold from periodic production during the past 3,000 years. A new orebody on the southern side of the ancient workings, known as the South orebody, is...
Water resources data for Florida, water year 1982, Volume 2A: South Florida surface water
Water Resources Division, U.S. Geological Survey
1983, Water Data Report FL-82-2A
Aeromagnetic map of Yucca Mountain and surrounding regions, southwest Nevada
Martin Francis Kane, Robert E. Bracken
1983, Open-File Report 83-616
Magnetic anomalies over Yucca Mountain and surrounding areas are largely caused by variations in magnetic properties and shapes, including structural offsets, of the extensive volcanic units that underlie the region. In a few places the anomalies are caused by intrusions. Correlation between magnetic properties measured from rock samples and those...
Reconnaissance study of stream sedimentation, southern Guam
P.J. Shade
1983, Water-Resources Investigations Report 83-4212
This study uses limited available data to estimate sediment yields for three basins in southern Guam. The flow-duration sediment-rating curve method, reservoir survey data, and Pacific southwest Inter-Agency Committee (PSIAC) formula were used. Daily suspended-sediment samples were collected at USGS gaging stations on the Ylig and Ugum Rivers for one...
Coal-seismic, desktop computer programs in BASIC; Part 7, Display and compute shear-pair seismograms
W.P. Hasbrouck
1983, Open-File Report 83-348
Processing of geophysical data taken with the U.S. Geological Survey's coal-seismic system is done with a desk-top, stand-alone computer. Programs for this computer are written in the extended BASIC language utilized by the Tektronix 4051 Graphic System. This report discusses and presents five computer pro grams used to display and...
Statistical summaries of selected chemical constituents in Kansas ground-water supplies, 1976-81
T.B. Spruill
1983, Open-File Report 83-263
Data on 24 chemical constituents or properties obtained from 766 wells in the Kansas ground-water quality monitoring network between 1976 and 1981 are statistically summarized in this report prepared in cooperation with the Kansas Department of Health and Environment. Minimum, median, and maximum concentrations and percentage of samples above the...
Overview and USGS activities
Robert B. McEwen, Hugh W. Calkins
Benjamin S. Ramey, editor(s)
1983, Circular 895-A
The discipline of cartography is undergoing a number of profound changes that center on the emerging influence of digital manipulation and analysis of data. Perhaps the most fundamental distinction between the digital representation of cartographic data and the conventional printed graphic is the need to explicitly and unambiguously code the...
Audio-magnetotelluric and telluric profile data near the Mohawk Mountains and the Table Top Mountains, southwestern Arizona
Douglas P. Klein, M. J. Baer
1983, Open-File Report 83-238
Density, porosity, and magnetic properties of rock specimens from southwestern Arizona
Douglas P. Klein, Gordon R. Johnson
1983, Open-File Report 83-808
Petrophysical data on 364 rock specimens from southwest Arizona are tabulated and summarized by major rock suites for that part of southwest Arizona covered by the Ajo 1? x 2? quadrangle and the Papago Indian Reservation. Data for 202 of these specimens are new and previously unreported. The tabulation also...
