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185258 results.

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Page 6353, results 158801 - 158825

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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...
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...
A systematist's view
Richard C. Banks
1971, Book chapter, Role of Hand-Reared Ducks in Waterfowl Management: a Symposium
Trichomoniasis
R. M. Kocan, C. M. Herman
John W. Davis, Roy C. Anderson, Lars Karstad, Daniel O. Trainer, editor(s)
1971, Book chapter, Infectious and Parasitic Diseases of Wild Birds
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...