Bird communities associated with succession and management of lowland conifer forests
D.K. Dawson
1979, Book chapter, Management of North Central and Northeastern Forests for Nongame Birds, Proceedings of the Workshop
Data from published bird censuses were used to determine changes in avian communities in relation to plant succession, fire, type conversion, and timber management practices in lowland conifer forests in the northeastern United States. With modifications in current logging practices, habitat for the bird species that nest in undisturbed...
The role of the U.S. Fish and Wildlife Service in managing nongame birds
S.H. Anderson
1979, Book chapter, Management of North Central and Northeastern Forests for Nongame Birds, Proceedings of the Workshop
Vertical and temporal habitat utilization within a breeding bird community
S.H. Anderson, H.H. Shugart Jr., T.M. Smith
James G. Dickson, Richard N. Conner, Robert R. Fleet, Jerome A. Jackson, James C. Kroll, editor(s)
1979, Book chapter, The Role of Insectivorous Birds in Forest Ecosystems
Chlordane in birds: A study of lethal residues and loss rates
L.F. Stickel, W. H. Stickel, R.D. McArthur, D.L. Hughes
1979, Book chapter, Toxicology and Occupational Medicine. Proceedings of the Tenth Inter-American Conference on Toxicology and Occupational Medicine. Key Biscayne (Miami), Florida
Lethal residues of heptachlor epoxide in brains of birds fed heptachlor ranged from 9 to 27 ppm wet weight; residues of oxychlordane in birds fed oxychlordane ranged from 6 to 16 ppm; both were diagnostically distinct from those in equally exposed survivors. In birds fed chlordane, brains of those that...
Effect of forest fragmentation on bird populations
C.S. Robbins
1979, Book chapter, Management of North Central and Northeastern Forests for Nongame Birds, Proceedings of the Workshop.
Many of the insectivorous songbird species that winter in the tropics are dependent on large unbroken tracts of forest during the breeding season. These species are disappearing from localities where forests are becoming fragmented. By long-range planning, managers can prevent local extinctions of these area-sensitive birds through use...
Artificial insemination of cranes with frozen semen
G.F. Gee, Thomas J. Sexton
J. C. Lewis, editor(s)
1979, Book chapter, Proceedings of the 1978 Crane Workshop
For the first time (1978) artificial insemination (AI) with frozen greater sandhill crane (Grus canadensis tabida) semen resulted in fertile eggs and chicks. During the 2 year (1977-78) study, 6 of 27 eggs produced were fertile. Three chicks hatched. Semen samples used for insemination were frozen and stored in liquid...
Environmental contaminant studies by the Patuxent Wildlife Research Center
G. H. Heinz, E. F. Hill, W. H. Stickel, L.F. Stickel
E.E. Kenaga, editor(s)
1979, ASTM Special Technical Publication STP693
Evaluation of the effects of environmental contaminants on wildlife is geared to interpreting events in the field, especially population effects, and both field and laboratory studies are planned for this purpose; procedures are adapted to specific problems and therefore do not include strict protocols or routine testing. Field evaluations include...
Oil dispersants and wildlife
P.H. Albers
Columbus H. Brown, editor(s)
1979, Book chapter, Proceedings of the 1979 U.S. Fish and Wildlife Service Pollution Response Workshop, 8-10 May 1979, St. Petersburg, Florida
Endrin versus 12-ketoendrin in birds and rodents
W. H. Stickel, T. E. Kaiser, W. L. Reichel
E.E. Kenaga, editor(s)
1979, Book chapter, Avian and Mammalian Wildlife Toxicology: A Symposium
British workers showed that in rats the endrin metabolite, 12-ketoendrin, was five times as toxic as endrin, was probably the ultimate cause of death, and was the main form of endrin in the brain at death. In cows and rabbits, however, they detected little of this metabolite. They...
Canada geese of the Patuxent Wildlife Research Center: family relationships, behavior and productivity
L.H. Rummel
1979, Book
Geese described are non-migratory, free-flying Todd's Canada geese (Branta canadensis interior). The genealogy of 261 of these geese was traced by archival research and three years of field observations. Nest locations and densities, preferences for various types of artificial nest structures, clutch sizes, hatching success, brood survival to...
Measurement of stream primary production
Doyle Stephens
1979, Report
Images of the U.S. Geological Survey, 1879-1979
E. L. Yochelson, C.M. Nelson
1979, Report
This collection of photographs reflects 100 years of public service by the U.S. Geological Survey since its founding on March 3, 1879: "... for the classification of the public lands, and examination of the geological structure, mineral resources, and products of the national domain."...
Uranium-series dating of lacustrine limestones from pan deposits with final Acheulian assemblage at Rooidam, Kimberley district, South Africa
Barney J. Szabo, K.W. Butzer
1979, Quaternary Research (11) 257-260
Lacustrine limestone samples from sedimentary pan deposits at Rooidam, near Kimberley, South Africa, that contain late Acheulian (Fauresmith) artifacts have been dated by 230Th234U and 231Pa235U methods. Results indicate a minimum age of about 200,000 yr B.P. for the terminal Acheulian in the interior of South Africa. ...
Uranium-series age of coral reef growth on Rottnest Island, Western Australia
Barney J. Szabo
1979, Marine Geology (29) M11-M15
Dating samples of corals and shell from the elevated coral reef terrace on Rottnest Island, Western Australia, indicate that in this region away from active plate boundaries the sea stood at least 3 m above present sea level 132,000 ± 5,000 years ago. There is no geologic evidence of other...
Volcanic ash in surficial sediments of the Kodiak shelf - An indicator of sediment dispersal patterns
M. A. Hampton, A.H. Bouma, T. P. Frost, I.P. Colburn
1979, Marine Geology (29) 347-356
Surficial sediments of the Kodiak shelf, Gulf of Alaska, contain various amounts of volcanic ash whose physical properties indicate that it originated from the 1912 Katmai eruption. The distribution of ash is related to the shelf physiography and represents redistribution by oceanic circulation rather than the original depositional pattern from...
A radiographic scanning technique for cores
G. W. Hill, M.E. Dorsey, J.C. Woods, R. J. Miller
1979, Marine Geology (29) 93-106
A radiographic scanning technique (RST) can produce single continuous radiographs of cores or core sections up to 1.5 m long and up to 30 cm wide. Changing a portable industrial X-ray unit from the normal still-shot mode to a scanning mode requires simple, inexpensive, easily constructed, and highly durable equipment....
Small-scale slump deposits, Middle Atlantic Continental Slope, off eastern United States
H.J. Knebes, Bobb Carson
1979, Marine Geology (29) 221-236
Analyses of 24 high-resolution seismic-reflection profiles that were collected during local and regional surveys show that small-scale slump deposite are ubiquitous whthin the intercanyon areas of the Continental Slope of the Middle Atlantic Bight. The deposits involve the upper 10-90 m of sediments, extend downslops for 1.8-7.2 km, and are...
On the mechanical interaction between a fluid-filled fracture and the earth's surface
David D. Pollard, Gary Holzhausen
1979, Tectonophysics (53) 27-57
The mechanical interaction between a fluid-filled fracture (e.g., hydraulic fracture joint, or igneous dike) and the earth's surface is analyzed using a two-dimensional elastic solution for a slit of arbitrary inclination buried beneath a horizontal free surface and subjected to an arbitrary pressure distribution. The solution is obtained by...
On microbial contaminants, micropseudofossils, and the oldest records of life
P. Cloud, K. Morrison
1979, Precambrian Research (9) 81-91
Microbial contaminants may be introduced on outcrop as well as en route to or in the laboratory. Micropseudofossils may be natural or man-made. It is possible to recognize such misleading objects and important that they are not allowed to dilute the growing record of authentic pre-Phanerozoic life. Filamentous microbial contaminants...
Evidence for the recurrence of large-magnitude earthquakes along the Makran coast of Iran and Pakistan
W.D. Page, J. N. Alt, L.S. Cluff, George Plafker
1979, Tectonophysics (52) 533-547
The presence of raised beaches and marine terraces along the Makran coast indicates episodic uplift of the continental margin resulting from large-magnitude earthquakes. The uplift occurs as incremental steps similar in height to the 1–3 m of measured uplift resulting from the November 28, 1945 (M 8.3) earthquake at Pasni and...
Two areas of probable holocene deformation in southwestern Utah
R.E. Anderson, R.C. Bucknam
1979, Tectonophysics (52) 417-430
Recent geologic studies in southwestern Utah indicate two areas of probable Holocene ground deformation. 1. (1) A narrow arm of Lake Bonneville is known to have extended southward into Escalante Valley as far as Lund, Utah. Remnants of weakly developed shoreline features, which we have recently found, suggest that Lake...
A comparison of long-baseline strain data and fault creep records obtained near Hollister, California
L.E. Slater, Robert O. Burford
1979, Tectonophysics (52) 481-496
A comparison of creepmeter records from nine sites along a 12-km segment of the Calaveras fault near Hollister, California and long-baseline strain changes for nine lines in the Hollister multiwavelength distance-measuring (MWDM) array has established that episodes of large-scale deformation both preceded and accompanied periods of creep activity monitored along...
Dislocation modeling of creep-related tilt changes
S. McHugh, M.J.S. Johnston
1979, Tectonophysics (52) 520-520
Tilt changes associated with 1–5 mm of fault creep have been detected at several different locations on the San Andreas fault on tiltmeters within 500 m of the creep observation point. The creep-related tilts have amplitudes of ≤ 0̌.5 μrad and durations...
Elastic expansion of the lithosphere caused by groundwater withdrawal in south-central Arizona
T.L. Holzer
1979, Tectonophysics (52) 304-304
Relative crustal uplift observed from 1948–1949 to 1967 in the Lower Santa Cruz River Basin in south-central Arizona is attributed at least in part to elastic expansion of the lithosphere induced by the removal, and subsequent loss by evapo transpiration, of 4.35 × 1013 kg of groundwater from alluvium. The area...
Changes in rate of fault creep
P. Harsh
1979, Tectonophysics (52) 519-519
Aseismic slip or fault creep is occurring on many faults in California. Although the creep rates are generally less than 10 mm/yr in most regions, the maximum observed rate along the San Andreas fault between San Juan Bautista and Gold Hill in central California exceeds 30 mm/yr. Changes in slip...
