Conference Papers
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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
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Parasitological methods for identification and abundance estimates of downstream migrant races of salmon Parasitological methods for identification and abundance estimates of downstream migrant races of salmon
No abstract available
Authors
J. R. Uzmann, R.A. Lander, M. N. Hesselholt
Resistance to furunculosis and ulcer disease in Eastern brook trout, Salvelinus fontinalis Resistance to furunculosis and ulcer disease in Eastern brook trout, Salvelinus fontinalis
No abstract available at this time
Authors
S. F. Snieszko, C. E. Dunbar, G. L. Bullock
Brant of the Bering Sea — Migration and mortality Brant of the Bering Sea — Migration and mortality
No abstract available.
Authors
Henry A. Hansen, Urban C. Nelson
Water problems in the present trend towards greater aridity Water problems in the present trend towards greater aridity
In the past few days we have heard a number of scientists, gathered here at Scripps Institution of Oceanography, discuss research work which, in one manner or another, bears on problems related to water resources. They have been discussing, particularly, problems in the field of climatology, and have speculated on the meaning of the results of this research. One of the problems under...
Authors
Luna Bergere Leopold
Wildlife implications of hardwood and brush controls Wildlife implications of hardwood and brush controls
No abstract available.
Authors
Phil D. Goodrum, Vincent H. Reid
Data and understanding Data and understanding
In the year 1534 when Cabeza de Vaca escaped from the aborigines of southern Texas by whom he had been enslaved for six years, he made his way on foot from the vicinity of Galveston to the west coast of Mexico. Although his Relación was not printed until 1542, the verbal report of Cabeza de Vaca gave impetus to the growing interest in exploration of New Spain. Estevanico, the black, one...
Authors
Luna Bergere Leopold
Land use and sediment yield Land use and sediment yield
When the vegetal cover is removed from a land surface, the rate of removal of the soil material, at least initially, increases rapidly. So well known is this principle that it hardly needs restatement. If attention is focused on any individual drainage basin in its natural state, large or small, and inquiry is made as to the rate of denudation, a quantitative answer is not easily...
Authors
Luna Bergere Leopold
Causes of winter losses among Canada geese Causes of winter losses among Canada geese
No abstract available.
Authors
C. M. Herman, J.H. Steenis, E.E. Wehr
Fisheries of the Great Lakes Fisheries of the Great Lakes
No abstract available.
Authors
James W. Moffett
Winter losses of Canada geese at Pea Island, North Carolina Winter losses of Canada geese at Pea Island, North Carolina
Report of research and findings to date. Topics discussed include: studies on life history and biology of gizzard worm; results of autopsies; experiments on survival and transmission of gizzard worm eggs and larvae in both field and laboratory; persistence of infections; and results of infections in geese of different ages. Cause of deaths has not been finally determined, but indications...
Authors
A.B. Cowan, C. M. Herman
Analysis of mixed-layer clay mineral structures Analysis of mixed-layer clay mineral structures
Among the enormously abundant natural occurrences of clay minerals, many examples are encountered in which no single specific crystallization scheme extends through a single ultimate grain. The characterization of such assemblages becomes an analysis of the distribution of matter within such grains, rather than the simple identification of mineral species. It having become established...
Authors
W. F. Bradley