Ticks as a factor in nest desertion of California brown pelicans
Kirke A. King, James O. Keith, Christine A. Mitchell, James E. Keirans
1977, The Condor (79) 507-509
In summary, our observations suggest that O. denmarki may be an important environmental factor influencing the distribution and success of Brown Pelican nests in the Gulf of California. More information on these relationships may be unobtainable without seriously disturbing and destroying large numbers of nests....
A comparison of 2 techniques for estimating deer density
C.S. Robbins
1977, American Birds (31) 562
We applied mark-resight and area-conversion methods to estimate deer abundance at a 2,862-ha area in and surrounding the Gettysburg National Military Park and Eisenhower National Historic Site during 1987-1991. One observer in each of 11 compartments counted marked and unmarked deer during 65-75 minutes at dusk during 3 counts in...
Effects of DDE on experimentally poisoned free-tailed bats (Tadarida brasiliensis): Lethal brain concentrations
D. R. Clark Jr., J.C. Kroll
1977, Journal of Toxicology and Environmental Health (3) 893-901
Adult female free-tailed bats (Tadarida brasiliensis) were collected at Bracken Cave, Texas, and shipped to the Patuxent Wildlife Research Center. Treated mealworms (Tenebrio molitor) containing 107 ppm DDE were fed to 17 bats; five other bats were fed untreated mealworms. After 40 days on dosage, during which one dosed bat...
Experimental feeding of DDE and PCB to female big brown bats (Eptesicus fuscus)
D. R. Clark Jr., R. M. Prouty
1977, Journal of Toxicology and Environmental Health (2) 917-928
Twenty-two female big brown bats (Eptesicus fuscus) were collected in a house attic in Montgomery County, Maryland. Seventeen were fed mealworms (Tenebrio molitor larvae) that contained 166 ppm DDE; the other five were fed uncontaminated mealworms. After 54 days of feeding, six dosed bats were frozen and the remaining 16...
Photo-optical enhancement of landsat imagery for land use in south-central Iowa
James R. Lucas, James V. Taranik, Frederic C. Billingsley
1977, Report
Because the photographic laboratory at the Jet Propulsion Laboratory found it difficult to estimate what were the optimal color renditions of the Iowa landscape for land classification purposes, the Iowa Geological Survey developed its own capability for producing color products from digitally enhanced Landsat data. Research has now shown that...
Status, distribution, and movements of martens in northeastern Minnesota
L.D. Mech, L.L. Rogers
1977, Research Paper NC-143
The decline of martens in Minnesota is reviewed and a recent increase documented. Adjacent and partially overlapping home ranges of 4.3 to 19.9 sq km were determined by telemetry for a female and three males. Habitat use is described. If current trapping and timber management practices persist, martens should continue...
Newsletter for the Accelerated Research Program for migratory shore and upland game birds
R.A. Coon
1977, Newsletter for the Accelerated Research Program for migratory shore and upland game birds No. 2.
Hawaiian Bird Bibliography
K. W. Bridges, M.S. Bridges, W.E. Banko
1977, Cooperative National Park Resources Studies Unit, Technical Report 14.
The current status of woodcock and woodcock surveys in the United States
J. Tautin
Daniel M. Keppie, Ray B. Owen Jr., editor(s)
1977, Book chapter, Proceedings of the Sixth Woodcock Symposium, held at Fredericton, New Brunswick, October 4, 5 and 6
A comparison of American woodcock (Philohela minor) wing collection survey data for 1975-76 and 1976-77 showed that there was little change in the indices to breeding success and hunter success between years in the Atlantic and Central regions. The 1977 breeding population index was up 15.2 percent from 1976 in...
Research, management, and status of the osprey in North America
Charles J. Henny
R.D. Chancellor, editor(s)
1977, Book chapter, World Conference on Birds of Prey, Vienna, 1-3 October, 1975. Report of Proceedings
Osprey populations were studied throughout North America during the last decade as a result of dramatic declines reported along the North Atlantic Coast in the1950s and early 1960s. Researchers used banding, localized studies, aerial surveys, and pesticide analyses to identify factors influencing regional populations. Declining populations showed extremely...
Woodcock utilization of commercial timberlands in the northeast
C.P. Nicholson, S. Homer, Ray B. Owen, T.G. Dilworth
1977, Book chapter, Proceedings of the Sixth Woodcock Symposium, held at Fredericton, New Brunswick, October 4, 5 and 6
This paper reports the results of studies in Maine (1975-77) and New Brunswick (1974) on the utilization of commercial timber areas by woodcock (Philohela minor). Openings created by logging operations were utilized for singing grounds and nocturnal roosting habitat. Singing male densities of 3.4 birds/1oo ha on were...
Identification of potential harvest units in the United States of the American woodcock
R.A. Coon, T.J. Dwyer, J.W. Artmann
Daniel M. Keppie, Ray B. Owen Jr., editor(s)
1977, Book chapter, Proceedings of the Sixth Woodcock Symposium, held at Fredericton, New Brunswick, October 4, 5 and 6
Potential harvest units were examined in the United States for American woodcock (Philohela minor) based on the distribution of both direct and indirect recoveries of preseason bandings. Unweighted and weighted recoveries were used to definefour sets of units with a minimal interchange of birds. With a configuration that...
Quantitative analysis of American woodcock nest and brood habitat
A. Bourgeois
Daniel M. Keppie, Ray B. Owen Jr., editor(s)
1977, Book chapter, Proceedings of the Sixth Woodcock Symposium, held at Fredericton, New Brunswick, October 4, 5 and 6
Sixteen nest and 19 brood sites of American woodcock (Philohela minoI) were examined in northern lower Michigan between 15 April and 15 June 1974 to determine habitat structure associated with these sites. Woodcock hens utilized young, second-growth forest stands which were similar in species composition for both nesting and brood...
Experimental woodcock management at the Moosehorn National Wildlife Refuge
G.F. Sepik, Ray B. Owen, M.W. Coulter
Daniel M. Keppie, Ray B. Owen Jr., editor(s)
1977, Book chapter, Proceedings of the Sixth Woodcock Symposium, held at Fredericton, New Brunswick, October 4, 5 and 6
The purpose of this study is to develop woodcock(Philohela minor) management techniques that can be easily used by the small landowner or incorporated with other land management operations such as commercial timber harvesting. The Moosehorn National Wildlife Refuge contains areas which are characteristic of the abandoned farms now being purchased...
Impact of estuarine pollution on birds
L. J. Blus, Stanley N. Wiemeyer, J.A. Kerwin, Rey C. Stendell, H. M. Ohlendorf, L.F. Stickel
1977, Book chapter, Estuarine Pollution Control and Assessment, Proceedings of a Conference held February 11-13, 1975
Pollution of estuaries affects bird populations indirectly through changes in habitat and food supply. The multi-factor pollution of Chesapeake Bay has resulted in diminution of submerged aquatic plants and consequent change in food habits of the canvasback duck. Although dredge-spoil operations can improve wildlife habitat, they often result...
Earthworm populations as related to woodcock habitat usage in Central Maine
J.W. Reynolds, W.B. Krohn, G.A. Hordan
Daniel M. Keppie, Ray B. Owen Jr., editor(s)
1977, Book chapter, Proceedings of the Sixth Woodcock Symposium, held at Fredericton, New Brunswick, October 4, 5 and 6
Lumbricid earthworms were sampled 'on two central Maine study areas between late April and early September, 1974, to relate earthworm abundance to use of feeding covers by American woodcock(Philoheli minor). On sampling days, occurring at 2 to 3 week intervals, a formalin solution was applied to thirty O.25m areas in...
The status and distribution of woodcock in Oklahoma
J.S. Barclay, R.W. Smith
Daniel M. Keppie, Ray B. Owen Jr., editor(s)
1977, Conference Paper, Proceedings of the Sixth Woodcock Symposium, held at Fredericton, New Brunswick, October 4, 5 and 6
The seasonal and spatial distributions of the American woodcock (Philohela minor) in Oklahoma were determined through field surveys and the collection of all known reports of woodcock sightings. Woodcock were reported in Oklahoma in all seasons and were most Jrequently sighted from 11 October to 10 January. The peak...
Management of migratory shore and upland game birds in North America
G.C. Sanderson, editor(s)
1977, Book
Comparison of granitic intrusions in the Pelona and Orocopia Schists, southern California
Fred K. Miller, Douglas M. Morton
1977, Journal of Research of the U.S. Geological Survey (5) 643-649
Dating of some small plutons in the San Gabriel and Chocolate Mountains, southern California, yields Miocene K-Ar ages. A single granodiorite pluton that has been segmented by branches of the San Jacinto fault intrudes the Pelona Schist and yields ages of 14.0 to 18.6 million years. Several quartz monzonite plutons...
Platinum, palladium, and rhodium in volcanic and plutonic rocks from the Gravina-Nutzotin belt, Alaska
Norman J. Page, Henry C. Berg, Joseph Haffty
1977, Journal of Research of the U.S. Geological Survey (5) 629-636
The Gravina-Nutzotin belt of Middle (?) Jurassic to middle Cretaceous sedimentary and volcanic rocks in south and southeastern Alaska includes concentrically zoned ultramafic complexes known to contain platinum-group metals. Previous isotopic, petrologic, and geologic studies suggested a close relation in time and space between the volcanic rocks and the ultramafic...
A combustimetric method for determining the total carbon content of geologic materials
J. Tillman
1977, Journal of Research of the U.S. Geological Survey (5) 583-587
A modified LEGO WR-12 carbon determinator is used in a combustimetric determination of total carbon in geologic materials. A thermal conductivity cell is used as the sensing device. International reference samples are analyzed and compared to results previously published. Three new standards from the Canadian Certified Reference Materials Project were...
Simulation of flow from an aquifer to a partially penetrating trench
Stanley A. Leake
1977, Journal of Research of the U.S. Geological Survey (5) 535-540
Construction of the Tennessee-Tombigbee Waterway in northeast Mississippi will involve dewatering as much as 46 m of an unconfined aquifer near the Tennessee Valley divide. Dewatering by trenching is one of the proposed methods. Methods of calculating effects of dewatering by trenching have been heretofore limited to situations where ideal...
Feasibility and technology for making remote measurements of solutes in water
Marvin C. Goldberg, Eugene R. Weiner
1977, Journal of Research of the U.S. Geological Survey (5) 561-563
An indepth evaluation of the available technology in the field of laser-Raman spectroscopy indicates that a TV-type detector, a single monochromator with a holographic grating, an entrance slit filter blocking the Rayleigh light, and a pulsed laser coupled to signal averaging electronics is the best combination of commercial equipment that...
Chemical structure of humic acids - Part 2, the molecular aggregation of some humic acid fractions in N, N-dimethylformamide
R.L. Wershaw, D.J. Pinckney
1977, Journal of Research of the U.S. Geological Survey (5) 571-577
Humic acid fractions form molecular aggregates in solution. In previous studies we have shown by small angle X-ray scattering that the size of these aggregates is a function of pH. In this study we have found that the size of the aggregates of two humic acid fractions in water and...
Thallium contents of 16 USGS standard rocks
F.O. Simon, E.Y. Campbell, P. J. Aruscavage
1977, Journal of Research of the U.S. Geological Survey (5) 579-581
Thallium was determined in 16 USGS standard rocks by atomic absorption spectroscopy in which a heated graphite atomizer was used after extraction as thallium iodide into amyl acetate. Four subsamples from four bottles of each standard sample, except G-1 and W-1, were analyzed in random order, and the average thallium...
