Annual survival rates of breeding adult roseate terns
Jeffrey A. Spendelow, James D. Nichols
1989, The Auk (106) 367-374
Analyses of the capture-recapture data on 910 individual Roseate Terns (Sterna dougallii) trapped from 1978-1987 as breeding adults on nests on Falkner Island, Connecticut, estimate the average annual minimum adult survival rate to be 0.74-0.75. There was weak evidence of year-to-year variation in annual survival rates during the study...
Breeding biology and habitat use of black ducks
R. Owen, J. Longcore, J. Ringelman, K. Reinecke, K. Hendrix
1989, Maine Agricultural Experiment Station Miscellaneous Publication (336) 261 (abs)
Forested wetlands are Important habitats for black ducks nesting in the Northeast. Invertebrates, with their high protein content, are primary foods of females during egg laying and for rapidly growing ducklings. Beaver-created and modified wetlands provide excellent habitat for feeding as well as protective cover. As these wetlands age, their...
Long-term persistence of dieldrin, DDT, and heptachlor epoxide in earthworms
W. N. Beyer, A. J. Krynitsky
1989, Ambio (18) 271-273
Earthworms can accumulate persistent soilborne insecticides and are an important source of contamination of terrestrail wildlife. We treated experimental plots once with dieldrin, DDT, or heptachlor, and measured changes in insecticide concentrations in earthworms over a 20-year period. We estimated 'half-times,' defined as the time for a concentration...
Divergent effects of postmortem ambient temperature on organophosphorus- and carbamate-inhibited brain cholinesterase activity in birds
E. F. Hill
1989, Pesticide Biochemistry and Physiology (33) 264-275
Time- and temperature-dependent postmortem changes in inhibited brain cholinesterase (ChE) activity may confound diagnosis of field poisoning of wildlife by anticholinesterase pesticide. Carbamate-inhibited ChE activity may return to normal within 1 to 2 days of exposure of intact carcass to moderate ambient temperature (18-32C). Organophosphorus-inhibited ChE activity becomes more...
Gas transport in unsaturated porous media: The adequacy of Fick's law
D.C. Thorstenson, D.W. Pollock
1989, Reviews of Geophysics (27) 61-78
The increasing use of natural unsaturated zones as repositories for landfills and disposal sites for hazardous wastes (chemical and radioactive) requires a greater understanding of transport processes in the unsaturated zone. For volatile constituents an important potential transport mechanism is gaseous diffusion. Diffusion, however, cannot be treated as an independent...
Volcanic hazards and their mitigation: progress and problems
R.I. Tilling
1989, Reviews of Geophysics (27) 237-269
At the beginning of the twentieth century, volcanology began to emerge as a modern science as a result of increased interest in eruptive phenomena following some of the worst volcanic disasters in recorded history: Krakatau (Indonesia) in 1883 and Mont Pelée (Martinique), Soufrière (St. Vincent), and Santa María (Guatemala) in...
Procedures for the Analysis of Band-recovery Data and User Instructions for Program MULT
M.J. Conroy, J.E. Hines, B. Kenneth Williams
1989, Resource Publication 175
We briefly review methods for inference from band-recovery data and introduce a new, flexible procedure (MULT) for analysis of data from bird-banding studies. We compare our computing method to program SURIV and discuss the relative advanatages of each. We present several basic model structures that can be analyzed...
Molybdenum Hazards to Fish, Wildlife, and Invertebrates: A Synoptic Review
R. Eisler
1989, Contaminant Hazard Reviews Report 19 ; Biological Report 85(1.19)
Ecological and toxicological aspects of molybdenum (Mo) in the environment are briefly reviewed, with emphasis on fish and wildlife. Subtopics include sources and uses, chemical properties, mode of action, background concentrations in biological and nonbiological samples, and lethal and sublethal effects on terrestrial plants and invertebrates, aquatic organisms, birds,...
Evaluation of the pileated woodpecker HSI model
C.E. Keller
1989, Book chapter, Proceedings of the Nongame Migratory Bird Workshop, Atlanta, Georgia, 14-16 November 1989, Region 4, U.S. Fish and Wildlife Serice
Considerations for monitoring raptor population trends based on counts of migrants
K. Titus, M.R. Fuller, J.L. Ruos
B-U. Meyburg, R.D. Chancellor, editor(s)
1989, Book chapter, Raptors in the Modern World: Proceedings of the III World Conference on Birds of Prey and Owls
Various problems were identified with standardized hawk count data as annually collected at six sites. Some of the hawk lookouts increased their hours of observation from 1979-1985, thereby confounding the total counts. Data recording and missing data hamper coding of data and their use with modern analytical techniques....
The impact of eastern equine encephalitis virus on efforts to recover the endangered whooping crane
J. W. Carpenter, G.G. Clark, D.M. Watts
J.E. Cooper, editor(s)
1989, Book chapter, Disease and Threatened Birds
The whooping crane (Grus americana), although never abundant in North America, became endangered primarily because of habitat modification and destruction. To help recovery, a captive propagation and reintroduction program was initiated at the Patuxent Wildlife Research Center (PWRC) in 1966. However, in 1984, 7 of 39 whooping cranes...
Lead contamination of golden eagles Aquila chrysaetos within the range of the California condor Gymnogyps californianus
P.H. Bloom, J. M. Scott, O. H. Pattee, M. R. Smith
B-U. Meyburg, R.D. Chancellor, editor(s)
1989, Book chapter, Raptors in the Modern World: Proceedings of the III World Conference on Birds of Prey and Owls
Blood samples were taken from 66 golden eagles from June 1985 to January 1986 and analyzed for their lead content. Thirty-nine percent had blood lead levels greater than 0.2 ppm, indicating exposure to environmental lead. Within the exposed group, 3 had blood levels exceeding 0.6 ppm and one...
Status and conservation of North American raptors migrating to the neotropics
S.E. Senner, M.R. Fuller
B-U. Meyburg, R.D. Chancellor, editor(s)
1989, Book chapter, Raptors in the Modern World: Proceedings of the III World Conference on Birds of Prey and Owls
The Richter scale: its development and use for determining earthquake source parameters
David M. Boore
1989, Tectonophysics (166) 1-14
The ML scale, introduced by Richter in 1935, is the antecedent of every magnitude scale in use today. The scale is defined such that a magnitude-3 earthquake recorded on a Wood-Anderson torsion seismometer at a distance of 100 km would write a record with a peak excursion of 1 mm....
Geology of the Zambales ophiolite, Luzon, Philippines
Darwin L. Rossman, G.C. Castanada, G.C. Bacuta
1989, Tectonophysics (168) 1-22
The Zambales ophiolite of western Luzon, Philippines, exposes a typical succession of basalt flows, diabasic dikes, gabbro and tectonized harzburgite. The age established by limiting strata is late Eocene. Lack of evidence of thrust faulting and the general domal disposition of the lithologie units indicate that the ophiolitic rocks are...
Stratigraphy and depositional history of the Pliocene Bianco section, Calabria, southern Italy
D. Rio, R. Thunell, R. Sprovieri, D. Bukry, E. Destefano, M. Howell, I. Raffi, C. Sancetta, A. Sanfilippo
1989, Palaeogeography, Palaeoclimatology, Palaeoecology (76) 85-105
An integrated micropaleontological and geochemical study was carried out on the Pliocene-age Bianco section located in Calabria, southern Italy. This section is somewhat unique for the Pliocene of the Mediterranean region in that it contains abundant calcareous and siliceous microfossils. Based on the biostratigraphic findings, it ranges in age from...
Geochemistry and diagenesis of Miocene lacustrine siliceous sedimentary and pyroclastic rocks, Mytilinii basin, Samos Island, Greece
M.G. Stamatakis, James R. Hein, A.C. Magganas
1989, Sedimentary Geology (64) 65-78
A Late Miocene non-marine stratigraphic sequence composed of limestone, opal-CT-bearing limestone, porcelanite, marlstone, diatomaceous marlstone, dolomite, and tuffite crops out on eastern Samos Island. This lacustrine sequence is subdivided into the Hora Beds and the underlying Pythagorion Formation. The Hora Beds is overlain by the clastic Mytilinii series which contains...
Variations in fluvial style in the Westwater Canyon Member, Morrison formation (Jurassic), San Juan basin, Colorado plateau
A.D. Miall, Christine E. Turner-Peterson
1989, Sedimentary Geology (63) 21-60
Techniques of architectural element analysis and lateral profiling have been applied to the fluvial Westwater Canyon Member of the Morrison Formation (Jurassic) in southern San Juan Basin. On a large scale, the sandstone-body architecture consists mainly of a series of tabular sandstone sheets 5–15 m thick and hundreds of meters...
Origin of the oceanic basalt basement of the Solomon Islands arc and its relationship to the Ontong Java Plateau-insights from Cenozoic plate motion models
R.E. Wells
1989, Tectonophysics (165) 219-235
Cenozoic global plate motion models based on a hotspot reference frame may provide a useful framework for analyzing the tectonic evolution of the Solomon Islands convergent margin. A postulated late Miocene collision of the Ontong Java Plateau (OJP) with a NE-facing arc is consistent with the predicted path of the...
An analysis of trichloroethylene movement in groundwater at Castle Air Force Base, California
L. Avon, J.D. Bredehoeft
1989, Journal of Hydrology (110) 23-50
A trichloroethylene (TCE) plume has been identified in the groundwater under a U.S. Air Force Base in the Central Valley of California. An areal, two-dimensional numerical solute transport model indicates that the movement of TCE due to advection, dispersion, and linear sorption is simulated over a 25-year historic period. The...
Analysis of the shallow groundwater flow system near Connetqout Brook, Long Island, New York
K. R. Prince, T. E. Reilly, O.L. Franke
1989, Journal of Hydrology (107) 223-250
Streamflow on Long Island is derived principally from shallow groundwater that flows above the deeper regional flow system. The movement of shallow groundwater was studied during 1975-1982 at Connetquot Brook - an undisturbed stream in Connetquot River State Park - in south-central Long Island. The investigation encompassed: (1) field studies...
An operational GLS model for hydrologic regression
Gary D. Tasker, J.R. Stedinger
1989, Journal of Hydrology (111) 361-375
Recent Monte Carlo studies have documented the value of generalized least squares (GLS) procedures to estimate empirical relationships between streamflow statistics and physiographic basin characteristics. This paper presents a number of extensions of the GLS method that deal with realities and complexities of regional hydrologic data sets that were not...
Sediment concentration versus water discharge during single hydrologic events in rivers
G. P. Williams
1989, Journal of Hydrology (111) 89-106
Relations between sediment concentration (C) and water discharge (Q) for a hydrologic event, such as a flood, are studied qualitatively by analyzing "smoothed" temporal graphs (discharge and concentration vs. time) in terms of mode, spread, and skewness. Comparing C Q ratios at a given discharge on the rising and falling...
Diffusion and consumption of methane in an unsaturated zone in north-central Illinois, U.S.A.
Robert G. Striegl, A. L. Ishii
1989, Journal of Hydrology (111) 133-143
The distribution of CH4 in unsaturated glacial and eolian deposits adjacent to buried low-level radioactive waste was measured, and movement of the gas from the waste source was simulated using a two-dimensional finite-difference model for gas diffusion in the unsaturated zone. Mean PCH4 was greatest (1.56 Pa) in a pebbly-sand deposit 11.6 m...
Streamflow and water-quality data for Little Clearfield Creek basin, Clearfield County, Pennsylvania, December 1987 - November 1988
K. M. Kostelnik, R.R. Durlin
1989, Open-File Report 89-247
Streamflow and water quality data were collected throughout the Little Clearfield Creek basin, Clearfield County, Pennsylvania, from December 1987 through November 1988, to determine the existing quality of surface water over a range of hydrologic conditions. This data will assist the Pennsylvania Department of Environmental Resources during its review of...
