Browsing Lake Superior Research Institute by Issue Date
Now showing items 1-20 of 214
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Toxicity of Silver to Fathead Minnows at Three Values of pH
(1922-04-27)Simultaneous renewal acute toxicity tests were conducted exposing fathead minnows (Pimephales promelas) to silver at three pH levels. The purpose of the tests was to determine if pH of the water affected the toxicity of ... -
Comparison of U.S. and Russian Agriculture
(1964)The Soviet Union is the world’s third largest producer of cotton, growing approximately one-eighth of the world’s total annual productions of cotton. The country’s average yield of lint per acre in 1964 was the world’s ... -
IMPORTANCE OF THE BOIS BRULE RIVER TO THE RECENT SEDIMENTAION HISTORY OF WESTERN LAKE SUPERIOR
(1969)As part of an interdisciplinary survey of Douglas County, Wis., and under the auspices of the University of Wisconsin Water Resources Center, the Bois Brule was singled out for a geological analysis of material constituting ... -
EFFECT OF TEMPERATURE ON OSMOREGUATION OF FRESHWATER POIKILOTHERMS
(1969-03-08)Much work has been done during the past few years showing that as the temperature of an organism changes, either upward or down, ionic equilibrium is disturbed within this organism. The degree of disturbance has been shown ... -
EFFECT OF TEMPERATURE ON OSMOREGULATION OF FRESHWATER POIKILOTHERMS
(1969-05-08)Much work has been done during the past few years showing that as the temperature of an organism changes, either upward or down, ionic equilibrium is disturbed within this organism. The degree of disturbance has been ... -
DEPOSTITIONAL ENVIRONMENTS OF LAKE SUPERIOR SANDS THROUGH GRAIN SIZE ANLYSIS
(1970)As part of the problem of recognizing and reconstructing paleo"' environments of arenaceous units in western Lake Superior, grain size parameters of modern fluvial, littoral and inner neritic ... -
Effects of South Shore Drainage Basins and Clay Erosion on the Physical and Chemical limnology of Western Lake Superior
(1972)A chemical and geological investigation of Lake Superior waters and sediments is presented. The study area extends from Superior, Wisconsin to Amnicon Point, Wisconsin, a distance of eight miles. Sampling was enacted on ... -
INFLUENCE OF TURBIDITY ON FISH ABUNDANCE IN WESTERN LAKE SUPERIOR - SECOND QUARTER REPORT
(1973)Effects of turbidity on fish abundance in Western Lake Superior are being studied through. field investigations aimed at measuring effects on species composition, distribution, feeding, mortality, growth ... -
A STUDY OF THE POLLUTION LEVELS AND DEPTHS WITHIN SUBSURFACE CORES COLLECTED DURING PRELIMINARY INVESTIGATIONS FOR THE PROPOSED ARROWHEAD BRIDGE
(1974-08-29)In a study completed in December 1973 by National Biocentric, Inc.· of Saint Paul for the U.S. Army Corps of Engineers, sediments collected during the preceding summer within the Duluth-Superior harbor at the water-sediment ... -
CHEMICAL EFFECTS OF RED CLAYS ON WESTERN LAKE SUPERIOR - FINAL REPORT
(1975)This project is concerned with expansion of the sparse information currently available pertaining to the chemical effects of red clay erosion on western Lake Superior and certain of its tributary streams. A major part of ... -
WISCONSIN'S LAKE SUPERIOR BASIN WATER QUALITY STUDY
(1975-04-30)Within the four county area of Douglas, Bayfield, Ashland and Iron, located in extreme northwestern Wisconsin, lies an area richly endowed in clean lakes, inviting forests, healthy air and clear streams. The most ... -
THE EFFECTS OF RED CLAY EROSION ON ORTHOPHOSPHATE LEVELS IN SOUTHWESTERN LAKE SUPERIOR
(1975-05-20)The effects of the erosion of red clay deposits along the northwestern Wisconsin shoreline area on orthophosphate inputs into Lake Superior was investigated. Using clay soil and river particulate samples, exchange ... -
Western Lake Superior Basin Erosion - Sedimentation Control Program Wisconsin and Minnesota / First Annual Report
(1975-09)While the purpose of an annual Project report is to evaluate the accomplishments of the past year in relation to a base line, this report, because of time frame will address the Project more in terms of a narrative. At ... -
Geochemical Relationships Between Lake Superior and Its Tributary Streams With-in the Superior-Cornucopia Red Clay Province, Wisconsin
(1975-11-24)The sedimentation and water quality characteristics of seven Northwestern Wisconsin Lake Superior tributary streams are presented. A large portion of the drainage basins of these streams is located in the Valder's red ... -
ANALYSIS OF MINNESOTA NORTHSHORE STREAMS
(1976)The stream research involving the determination of baseline water quality parameters from streams entering Lake Superior from the Minnesota portion of the basin was carried out between August 21, 1974 and July 20, 1975. -
INFLUENCE OF TURBIDITY ON SURVIVAL, GROWTH AND DISTRIBUTION OF LARVAL LAKE HERRING Coregonus artedii
(1976)Influence of red-clay turbidity on survival, growth and distribution of larval lake herring, Coregonus artedii, was measured by holding post hatch larvae for 62 days at 9 levels of suspended solids varying from 2 to ... -
Aquaria on a classroom budget
(1976)With the increasing emphasis on environmental science in many school curricula, activities which utilize small ecosystems for demonstration and study assume great importance. Aquaria are one of the best means of ... -
ENVIRONMENTAL INVENTORY OF LOWER ST. LOUIS RIVER COVERING PROPOSED IMPROVEMENTS TO DULUTH-SUPERIOR HARBOR, MINNESOTA AND WISCONSIN FINAL REPORT
(1976-03-01)This report is the result of studies conducted in St. Louis River-Duluth Harbor in the summer of 1975. Specifically, three aspects of the harbor's biota were included, and are treated in subsequent sections. These ... -
Final Report on Effective Regional Use of Water Resources In The Lake Superior Basin Through Continuing Community Education
(1976-05)Project AWARE began at a lake Superior Water Consortium meeting held 17 January 1974. Schools represented were: University of Wisconsin Superior University of Wisconsin - Eau Claire Northland College Michigan ... -
RED CLAY EROSION DEMONSTRATION RESEARCH FIRST ANNUAL REPORT
(1976-06-01)The central emphasis of this .study is to identify major vegetational components of the Little Balsam and Skunk Creek watersheds and to relate this cover to the erosion of the red clay soils. The examination of the ...