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Page 5656, results 141376 - 141400

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Blood parasites of wood ducks
C. M. Herman, J. O. Knisley Jr., G. D. Knipling
1971, Journal of Wildlife Management (35) 119-122
Examination of blood films from wood ducks (Aix sponsa) from several northeastern states revealed Haemoproteus, Leucocytozoon, Plasmodium and a typanosome. Haemoproteus occurred in all areas sampled and birds of the year from Massachusetts demonstrated the highest incidence during the last 2 weeks in August. Leucocytozoon was most prevalent in more...
The occurrence and significance of polychlorinated biphenyls in the environment
E. H. Dustman, L.F. Stickel, L. J. Blus, W. L. Reichel, Stanley N. Wiemeyer
1971, Transactions of the North American Wildlife and Natural Resources Conference (36) 118-131
SUMMARY: Polychlorinated biphenyls constitute a group of chlorine-bearing compounds of industrial origin that have permeated the natural environment throughout the world. Their chemical structure resembles that of some of the organochlorine pesticides. They are troublesome interferences in gas chromatographic analysis of these...
Publication dates of the North American Fauna series
Richard C. Banks
1971, The Auk (88) 676-676
The correct date of publication of numbers in the well-known North American Fauna series, begun in 1889, was printed on the cover of each issue through No. 48. After that time dates of publication that appear on the covers are either incomplete or incorrect. For taxonomic purposes, for developing a...
Some patterns of woodcock activities on Maine summer fields
W.B. Krohn
1971, The Wilson Bulletin (83) 396-407
Certain aspects of woodcock usage of summer fields were studied in Maine. Findings were as follows: ....1. On two study fields in 1968, numbers of woodcock first began spending nights in the fields during the second week of June. During 1968 and 1969, the number of birds flushed from the...
Proceedings of the eighty-eighth stated meeting of the American Ornithologists' Union
Richard C. Banks
1971, The Auk (88) 144-162
The Eighty-eighth Stated Meeting of the American Ornithologists' Union was held 5-9 October 1970 at Buffalo, New York. Cosponsors were the Buffalo Society of Natural Sciences, the Buffalo Audubon Society, and the Buffalo Ornithological Society. Business sessions were held in the Statler Hilton Hotel on 5 October, and papers...
Equipment for transporting live black fly larvae (Diptera: Simuliiae)
I.B. Tarshis, T.R. Adkins
1971, Annals of the Entomological Society of America (64) 1194-1195
In studies relating to the biology and ecology of black flies, live larvae of at least 70 species of Simuliidae have been collected from their natural breeding sites and transported in containers with nonagitated water for short distances to the laboratory. One of us (Tarshis 1966) found, however, that even...
Chlorinated hydrocarbons in the marine environment. A report prepared by the Panel on Monitoring Persistent Pesticides in the Marine Environment of the Committee on Oceanography
Panel on Monitoring Persistent Pesticides in the Marine Environment, E.D. Goldberg, P. Butler, P. Meier, D. Menzel, G. Paulik, R. Risebrough, L.F. Stickel
1971, Book
SUMMARY AND RECOMMENDATIONS : The oceans are an ultimate accumulation site for the persistent chlorinated hydrocarbons. As much as 25 percent of the DDT compounds produced to date may have been transferred to the sea. The amount of DDT compounds in the marine biota is estimated to...
Status of correlation of Quaternary stratigraphic units in the western conterminous United States
P. W. Birkeland, D. R. Crandell, G.M. Richmond
1971, Quaternary Research (1) 208-227
Deposits of Quaternary age from the Rocky Mountains to the Pacific Coast in the western conterminous United States represent a great variety of environments. The deposits include those of continental and alpine glaciers, glacial meltwater streams, nonglacial streams, pluvial lakes, marine environments, eolian environments, and masswasting environments. On two charts...
Aircraft measurements of microwave emission from Arctic Sea ice
T. Wilheit, W. Nordberg, J. Blinn, W. Campbell, A. Edgerton
1971, Remote Sensing of Environment (2) 129-139
Measurements of the microwave emission from Arctic Sea ice were made with aircraft at 8 wavelengths ranging from 0.510 to 2.81 cm. The expected contrast in emissivities between ice and water was observed at all wavelengths. Distributions of sea ice and open water were mapped from altitudes up to 11...
The sea sled - A device for measuring bottom profiles in the surf zone
E. Reimnitz, D.A. Ross
1971, Marine Geology (11) M27-M32
The Sea Sled is a simple, easily constructed device for obtaining relatively accurate and quick bottom profiles in the surf zone. The onshore — offshore motion associated with the passage of waves propels the sled on both its seaward traverse and the shoreward...
Effects of irrigation on streamflow in the Central Sand Plain of Wisconsin
E.P. Weeks, H.G. Stangland
1971, Open-File Report 70-362
Development of ground water for irrigation affects streamflow and water levels in the sand-plain area of central Wisconsin. Additional irrigation development may reduce opportunities for water-based recreation by degrading the streams as trout habitat and by lowering lake levels. This study was made to inventory present development of irrigation in...
Use of time-lapse photography equipment for hydrologic studies
J.R. Beck
1971, Report
This report describes equipment used for recording hydrologic events photographically on a controlled time scale. Equipment used included a 16-mm (millimeter) motion-picture camera, batteries, and associated intervalometer hardware.Variables that affected operation of the equipment, and which were used to turn the equipment on and off upon demand, were sunlight intensity,...
Aerial photographic reproductions
Water Resources Division, U.S. Geological Survey
1971, Report
Geological Survey vertical aerial photography is obtained primarily for topographic and geologic mapping. Reproductions from this photography are usually satisfactory for general use. Because reproductions are not stocked, but are custom processed for each order, they cannot be returned for credit or refund....
Surface water supply of the United States, 1961-65, Part 13. Snake River basin
1971, Water Supply Paper 1934
This volume is one of a series of 37 reports presenting records of stage, discharge, and content, of streams, lakes, and reservoirs in the United States during the 1961-65 water years. Since 1888, when the U.S. Geological Survey first studied streamflow in relation to problems of irrigation, similar records have been obtained at...
Sediment loads in canals 18, 23, and 24 in southeastern Florida
William A. J. Pitt Jr.
1971, Open-File Report 72-299
Suspended-sediment concentrations and suspended-sediment discharges were determined in selected canals in St. Lucie, Martin, and Palm Beach Counties, in southeastern Florida. Sediment rating curves were developed to relate water discharge to sediment concentration at the three sites sampled. An evaluation of the concentration and sediment loads shows that larger amounts...
Estimating magnitude and frequency of floods in Wisconsin
Duane H. Conger
1971, Open-File Report 71-76
This report provides methods for estimating flood characteristics at most sites where flood information may be needed for planning and design and summatizes the significant flood data and related information available on Wisconsin streams. Individual equations are presented for estimating flood discharges for selected recurrence intervals up to a 25-year...
The national hydrologic bench-mark network
Ernest D. Cobb, J.E. Biesecker
1971, Circular 460-D
The United States is undergoing a dramatic growth of population and demands on its natural resources. The effects are widespread and often produce significant alterations of the environment. The hydrologic bench-mark network was established to provide data on stream basins which are little affected by these changes. The network is...