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Now showing items 11-20 of 206
VEGETATION AND RED CLAY SOIL STABILITY
(1976)
Vegetation cover, and related factors such as litter and organic content of soil, is known to be
important in controlling and/or reducing erosion rates (1). Other factors such as slope, soil
particle size, soil ...
The Effects of Chlorpyrifos on a natural Aquatic System: A research Design for Littoral Enclosure Studies and Final Research Report
(1988-03)
The need for new and improved procedures to determine primary and secondary (ecological) effects of
pesticides on the non-target biota in natural aquatic systems necessitated the research effort that
has resulted in ...
THE EFFECTS OF WATER HARDNESS, Ph, CHLORIDE AND SULFATE SALTS, AND DISSOLVED ORGANIC MATTER ON THE TOXICITY OF SILVER TO FATHEAD MINNOWS (PIMEPHALES PROMELAS)
(1992-05-02)
A relationship between water hardness and the toxicity of silver to aquatic organisms was reported
in the National Water Quality Criteria for th Protection of Aquatic Life for Silver document (EPA
440/5-80-071 or PB81- ...
PHYSICAL AND BIOLOGICAL PARAMETERS, LITTLE SAND BAY, APOSTLE ISLANDS NATIONAL LAKESHORE, AND RELATIONSHIPS TO VARIOUS DOCKING DESIGNS
(1975-01-25)
This report, the second of a sequence, was compiled during the period
4 September, 1974 to 31 January 1975, by personnel of the Center of Lake Superior
Environmental Studies (CLSES) of the University of Wisconsin, ...
pH Dependency of 2,4,5-Trichlorosphenol Toxicity
(1993-09-30)
Acute 96-h flow-through toxicity tests with the compound 2,4,5- trichlorophenol (TCP) were
conducted using the annelid, Lumbriculus variegatus, as the test organism. Toxicity tests were
conducted at three nominal pH ...
The Chironomus tentans Survival and Growth Bioassay: A Study of the Effect of Reduced Larval Growth Upon the Following Generation and an Application of the Bioassay in Evaluating Sediment Quality
(1993-09)
A life-cycle study was conducted with Chironomus tentans to assess the significance
of growth retardation of second to third instar larvae over a 10-d test period on long-term
survival, emergence success, and fecundity. ...
SEDIMENT QUALITY EVALUATION IN THE LOWER FOX RIVER AND SOUTHERN GREEN BAY OF LAKE MICHIGAN
(1991-04)
The quality of sediment from the Lower Fox River between the dam at DePere, Wisconsin, and the
mouth of the river, and from the southern tip of Green Bay, Lake Michigan, was evaluated at 12
sites by a combination of ...
TOXICOLOGICAL STUDIES WITH HERBICIDES, SELECTED EPA PRIORITY POLLUTNATS AND RELATED CHIMCALS IN AQUATIC ORGANISMS
(1982-11)
Toxicological studies were conducted in two areas: (l) the toxicity, bioconcentration potential and
metabolism of five herbicides in fish; and (2) the toxicity and/or metabolism of priority pollutants and related chemicals ...
Western Lake Superior Basin Erosion - Sedimentation Control Program Wisconsin and Minnesota Second Annual Report September 1976
(1976-09)
During the past year the Red Clay Project Work Plan was published and distributed Since the
formulation of the final draft, only minor modifications have been made to that plan.
ESTIMATES OF "NO EFFECT" CONCENTRATIONS OF SELECTED PESTICIDES IN FRESHWATER ORGANISMS (YEAR II) 1 April 1979 - 31 March 1980
(1980)
Work began on thirteen assigned chemicals to determine acute and chronic toxicities
bioconcentration, and'metabolism in freshwater organisms.
The assigned chemicals for testing are as follows: di-2-ethylhexylphthalate, ...