Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 41778
Water quality of streams tributary to Lakes Superior and Michigan
Water quality of streams tributary to Lakes Superior and Michigan was analyzed for 142 stations on 99 streams tributary to Lake Superior and 83 stations on 56 streams tributary to Lake Michigan during 1962-65. Concentrations of aluminum, copper, and iron were not affected greatly by flow or season. Magnesium, calcium, chlorides, total alkalinity, total hardness, and conductivity varied with the fl
Authors
Jerome W. Zimmerman
Effects of lamprey larvicides on invertebrates in streams
This study was conducted on five streams tributary to Lake Superior and four tributary to Lake Michigan. Samples of the bottom fauna before and after chemical treatment revealed that most groups of aquatic organisms were not adversely affected by exposure to larvicides. The total number of invertebrates was smaller 1 week after treatment than before treatment, increased somewhat by 6 weeks after t
Authors
Richard L. Torblaa
Dietary Factors and Hepatoma in Rainbow Trout (Salmo gairdneri). I. Aflatoxins in Vegetable Protein Feedstuffs
Aflatoxins (toxic metabolites of the mold Aspergillus flavus) were present in a commercial trout ration causing hepatoma in rainbow trout. Cottonseed meal and solvent extracts of cottonseed meal and of rations containing cottonseed meal and peanut meal were found by chemical assay and confirmed by duckling assay to contain aflatoxins. Diets containing these materials and a purified test diet to wh
Authors
R.O. Sinnhuber, J.H. Wales, J.L. Ayers, R.H. Engebrecht, D.F. Amend
Histopathogenesis of experimentally induced viral hemorrhagic septicemia in fingerling rainbow trout (Salmo gairdneri)
Abstract not available.
Authors
W. T. Yasutake, C.J. Rasmussen
Role of intestinal microflora in the degradation of DDT by rainbow trout (Salmo gairdneri)
Though liver homogenates show apparent microsomal enzyme DDT-dehydrochlorinase activity, in the intact fish the intestinal microflora play a major role in DDT detoxication. Since the presence of this microflora in fish depends on the recent intake of food (12), the rate of detoxication and hence the toxicity of ingested DDT to the rainbow trout will probably depend somewhat on the available food s
Authors
G. Wedemeyer
Vibrio anguillarum from an epizootic in rainbow trout (Salmo gairdneri in the USA.
No abstract available.
Authors
A. J. Ross, J.E. Martin, V. Bressler
Pasteurella multocida isolated from a California sea lion (Zalophus californianus)
No abstract available.
Authors
M.C. Keyes, F.W. Crews, A. J. Ross
Partial hydrolysis of dieldrin by Aerobacter aerogenes
Although dieldrin (1,2,3,4,10,10-hexachloro- 6,7-epoxy-1 ,4 ,4a ,5 ,6 ,7 ,8, 8a-octahydro-1 ,4-endo, exo-5, 8-dimethanonaphthalene) metabolism by mammals (F. Korte and H. Arent, Life Sci. 4:2017, 1965) and insects (D. F. Heath and M. Vanderkar, Brit. J. Ind. Med. 21:269, 1964) has been reported, little is known about the degradation of this important pesticide by microorganisms. Korte et al. (Ann.
Authors
Gary Wedemeyer
Fluorescent antibody studies of isolates of Aeromonas salmonicida
No abstract available.
Authors
G.W. Klontz, D. P. Anderson
Book Review: Transmission of viruses by the water route by Gerald Berg, ed.
This "book" is a collection of 31 carefully edited reports which are based upon presentations of highly qualified persons who were, for the most part, participants in a 3-day symposium held in 1965 and sponsored by the research branch of what is now the Federal Water Pollution Control Administration (FWPCA).
Authors
K. Wolf