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Page 5514, results 137826 - 137850

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Breeding red-winged blackbirds in captivity
C.J. Know, A.R. Stickley Jr.
1974, The Auk (91) 808-816
Ability to establish and maintain self-sustaining breeding colonies of captive Red-winged Blackbirds (Agelaius phoeniceus) would facilitate long-term studies designed to develop methods for alleviating blackbird depredations as well as provide basic life history data. To be most useful, the colonies should be established in pens near laboratory facilities; this frequently...
Optimal exploitation strategies for an animal population in a stochastic serially correlated environment
David R. Anderson
1974, Dissertation Abstracts International (35) 3107
Optimal exploitation strategies were studied for an animal population in a stochastic, serially correlated environment. This is a general case and encompasses a number of important cases as simplifications. Data on the mallard (Anas platyrhynchos) were used to explore the exploitation strategies and test several hypotheses because relatively...
Taxonomic status of certain clapper rails of southwestern United States and northwestern Mexico
Richard C. Banks, R. E. Tomlinson
1974, The Wilson Bulletin (86) 325-335
Examination of 58 Clapper Rail specimens taken in the breeding season from the Colorado Valley and the west coast of mainland Mexico verifies the distinctness of the races Rallus longirostris yomanensis, R. 1. rhizophorae, and R. 1. nayaritensis. Rallus 1. yumanensis is a relatively pale brown, pointed-winged, summer resident of...
Proceedings of the ninety-first stated meeting of the American Ornithologists' Union
Richard C. Banks
1974, The Auk (91) 387-410
The Ninety-first Stated Meeting of the American Ornithologists' Union was held 8-12 October 1973 at Provincetown, on Cape Cod, Massachusetts, under the sponsorship of the Nuttall Ornithological Club, which was celebrating its centennial year. Business, technical, and social sessions were held in the Provincetown Inn. Field trips were taken...
The breeding bird atlas of Montgomery County, Maryland, USA
M. K. Klimkiewicz, C.S. Robbins
1974, Acta Ornithologica (14) 446-458
A two-year Breeding Bird Atlas program for Montgomery County was undertaken by the Maryland Ornithological Society in 1971-1972. The county was divided into 65 5 km blocks and each block was assigned to an observer. Preliminary results show 46 to 93 species (mean 66) recorded per 5 km...
The winter bird survey of central Maryland, U.S.A
C.S. Robbins, D. Bystrak
1974, Acta Ornithologica (14) 254-271
A method for monitoring changes in winter bird populations was tested in central Maryland in the winters of 1970, 1971 and 1972. A systematic sample of 41 transects was established to sample an area of 6150 sq. km. Each transect, located at the center of a standard 7 1/2-minute topographic...
Percutaneous absorption of several chemicals, some pesticides included, in the red-winged blackbird
J.G. Rogers Jr., R.H. Cagan, M.R. Kare
1974, Environmental Physiology and Biochemistry (4) 104-111
Percutaneous absorption in vivo through the skin of the feet of the red-winged blackbird (Agelaius phoeniceus) has been investigated. Absorption after 18-24 hours exposure to 0.01 M solutions of salicylic acid, caffeine, urea, 2,4-D, dieldrin, diethylstilbesterol, and DDT was measured. Of these, only DDT and diethylstilbesterol were not...
Relationships between chemical structure and rat repellency: II. compounds screened between 1950 and 1960
Walter A. Bowles, V. A. Adomaitis, J.B. DeWitt, J.J. Pratt Jr.
1974, Technical Report 75-11-FEL.
Over 4,600 compounds, chiefly organic types, were evaluated using both a food acceptance test (Part A) and a barrier penetration bioassay (Part B), to correlate relationships between chemical structure and rodent repellency. These chemicals are indexed and classified according to the functional groups present and to the degree of substitution...
Environmental effects
D. coordinator Pimentel coordinator, E. Kenaga, F.W. Slife, H. Mooney, R.E. Odum, L. Stickel
1974, Book chapter, Herbicide Report. Chemistry and Analysis, Environmental Effects, Agriculture and other Applied Uses
The National Center of the U.S. Geological Survey
Water Resources Division, U.S. Geological Survey
1974, Report
In August of 1973, the U. S. Geological Survey moved its first group of employees into the John Wesley Powell Federal Building of its newly constructed National Center at Reston, Virginia. The move signaled the fruition of more than a decade of planning and work to consolidate the agency's widespread...
An Anvilian (early pleistocene) marine fauna from western Seward Peninsula, Alaska
D.M. Hopkins, R.W. Rowland, R.E. Echols, P. C. Valentine
1974, Quaternary Research (4) 441-470
Cover sediments of the York Terrace exposed near the California River, western Seward Peninsula, Alaska, yield mollusks, ostracodes, and foraminifera that lived during the Anvilian transgression of early Pleistocene age. The fossiliferous sediments lie at the inner edge of the York Terrace, a...
Quaternary deposits in southwestern Afghanistan
G.I. Smith
1974, Quaternary Research (4) 39-52
Geologic evidence in the closed Seistan Basin of southwestern Afghanistan and adjacent parts of Iran and Pakistan indicates that a lake as much as 65,000 sq km in size occupied this closed depression during Pleistocene time. The deposits consist mostly of lacustrine silt and clay and have a maximum observed...
Structure and development of the southern Moroccan continental shelf
William P. Dillon
1974, Marine Geology (16) 121-143
The structure of the continental shelf off southern Morocco was studied by means of 2,100 km of seismic reflection profiles, magnetic and bathymetric surveys, and dredge samples. The research area lies off four geologic divisions adjacent to the coast: the Atlas Mountains; the...
Bimodal tholeiitic-dacitic magmatism and the Early Precambrian crust
F. Barker, Z. E. Peterman
1974, Precambrian Research (1) 1-12
Interlayered plagioclase-quartz gneisses and amphibolites from 2.7 to more than 3.6 b.y. old form much of the basement underlying Precambrian greenstone belts of the world; they are especially well-developed and preserved in the Transvaal and Rhodesian cratons. We postulate that these basement rocks are largely a metamorphosed, volcanic, bimodal suite...
Geodimeter measurements of slip and strain accumulation along the San Andreas fault
J.C. Savage, W.H. Prescott
1974, Tectonophysics (23) 407-418
The U.S. Geological Survey conducts repeated geodimeter surveys of trilateration networks in central California in order to study the processes of slip and strain accumulation along the San Andreas fault. The precision of distance measurement is described by a standard deviation <span id="MathJax-Element-1-Frame"...