Theses
Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 100 theses authored by our scientists going back to 1959 and refine search by topic, location, year, and advanced search.
Filter Total Items: 157
Toxicity of formalin, malachite green, and the mixture to four life stages of rainbow trout Toxicity of formalin, malachite green, and the mixture to four life stages of rainbow trout
Formalin, malachite green, or a mixture of them are utilized in fish culture for control of external parasites of fish and control of fungus on fish and fish eggs. Very little information is available concerning the toxicity of these compounds to fish under laboratory test conditions or the differences in sensitivity to these chemicals at various life stages. This study was designed to 1...
Authors
Terry D. Bills, Charles F. Advised by: Hosler, Kenneth B. Cumming, Richard P. Nord, Robert E. Senff
Some observations on changes in the Na+ and K+ dependent adenosine triphosphatase activity of gills and kidney associated with the parr-smolt transformation of Atlantic salmon (Salmo salar) Some observations on changes in the Na+ and K+ dependent adenosine triphosphatase activity of gills and kidney associated with the parr-smolt transformation of Atlantic salmon (Salmo salar)
No abstract available at this time
Authors
T.H. McCartney
Digestive capabilities, gut morphology, and cecal fermentation in wild waterfowl (genus Anas) fed various diets Digestive capabilities, gut morphology, and cecal fermentation in wild waterfowl (genus Anas) fed various diets
No abstract available at this time
Authors
M. R. Miller
The ecology and social behavior of the chuckwalla, Sauromalus obesus obesus Baird The ecology and social behavior of the chuckwalla, Sauromalus obesus obesus Baird
No abstract available at this time
Authors
K.H. Berry
Pathophysiology of IHN virus in rainbow trout Pathophysiology of IHN virus in rainbow trout
No abstract available
Authors
D.F. Amend
A review of the life history of the southern flying squirrel, Glaucomys volans, and a late winter study of a population in southeastern Ohio A review of the life history of the southern flying squirrel, Glaucomys volans, and a late winter study of a population in southeastern Ohio
No abstract available at this time
Authors
R. L. Hothem
Fire and fuel relationships in mixed conifer ecosystems of Yosemite National Park Fire and fuel relationships in mixed conifer ecosystems of Yosemite National Park
No abstract available at this time
Authors
J. W. van Wagtendonk
Seasonal distributions of salinity, phytoplankton nutrients, and dissolved organic carbon in south San Francisco Bay, 1960-1970 Seasonal distributions of salinity, phytoplankton nutrients, and dissolved organic carbon in south San Francisco Bay, 1960-1970
No abstract available.
Authors
L. E. Schemel
Topographic influence on the pattern of plant communities, phenology, and water relations of a desert ecosystem Topographic influence on the pattern of plant communities, phenology, and water relations of a desert ecosystem
No abstract available at this time
Authors
W. L. Halvorson
Some field observations on the desert spiny lizard, Sceloporus magister Hallowell Some field observations on the desert spiny lizard, Sceloporus magister Hallowell
No abstract available at this time
Authors
K.H. Berry
Environmental influence on the pattern of plant communities along the north rim of the Grand Canyon Environmental influence on the pattern of plant communities along the north rim of the Grand Canyon
No abstract available at this time
Authors
W. L. Halvorson