Lake Superior Research Institute
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The Lake Superior Research Institute (LSRI) was created in 1967 and formally recognized by the University of Wisconsin’s Board of Regents in 1969. LSRI’s mission is to conduct environmental research and provide services that directly benefit the people, industries, and natural resources of the Upper Midwest, the Great Lakes Region, and beyond; provide non-traditional learning and applied research opportunities for undergraduate students; and foster environmental education and outreach in the Twin Ports and surrounding communities.
Recent Submissions
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TOXICITY, BIOCONCENTRATION AND METABOLISM OF SELECTED CHEMICALS IN AQUATIC ORGANISMS
(1980)PROJECT OBJECTIVES This study will provide information for an assessment of (1) the hazard potential of selected organic compounds for freshwater organisms, and (2) the use of aquatic organisms as biological screening ... -
TOWARD DEVELOPMENT OF A GREAT LAKES RELEVANT BWMS TESTING PROTOCOL: USE OF STAINS TO ASSESS VIABILITY OF RESTING STAGES
(2023-04-27)United States Coast Guard and International Maritime Organization rules developed to minimize the spread of aquatic nuisance species (ANS) in the ballast of commercial ships regulate indicator microbes, protists and ... -
TOWARD DEVELOPMENT OF A GREAT LAKES RELEVANT BWMS TESTING PROTOCOL: ASSESSMENT OF ENVIRONMENTAL ACCEPTABILITY OF TREATED BALLAST WATER UPON DISCHARGE
(2023-04-27)Understanding the impact of ballast water treatment and neutralization methods on receiving waters is critical to minimizing harmful effects of ballast discharge to the environment, specifically the freshwater of Lake ... -
EXPLORING OPTIONS FOR REAL-TIME WATER QUALITY MONITORING WITHIN GREAT LAKES PORTS
(2023-04-10)This technical report presents findings from the exploration of available environmental monitoring sensors, the piloting experience of long-term field deployment of the Proteus multiparameter sonde developed by Proteus ... -
LAND-BASED EVALUATION OF THE EFFECTIVENESS OF THE OPTIMARIN DN100 AND DN150 BALLAST SYSTEMS IN THE GREAT LAKES
(2023-03-23)This technical report presents the land-based evaluation of two Optimarin Ballast System models. The focus was primarily on the Model 68/340FX2 using a DN100 chamber but also includes data for one trial using the Model ... -
Influence of Angling on Age Structure and Growth of Bluegills in Northern Wisconsin Lakes
(2005)Abstract: Bluegill sunfish (Lepomis macrochirus) have long been heavily targeted by anglers in a consumption oriented fishery. Anglers catch bluegill over a wide size range but only harvest those large enough to have ... -
Characteristics of the Duluth-Superior Harbor and Lake Superior
(1981)The twin ports of Superior, Wisconsin and Duluth, Minnesota were founded at the head of the world's greatest continuous mass of freshwater. The Laurentian Great Lakes contain about 20% of the world's freshwater resources. ... -
Assessing Threats to Coldwater Habitat in Wisconsin's Bois Brule River
(2023-01-10)The Bois Brule River (Brule) is a cold-water river in Douglas County, Wisconsin. The Brule supports a premier trout fishery in the region, which attracts anglers from across the state, nation, and around the world. Two ... -
2021 Brule Coldwater Legacy Project Report
(2023-02-27)This project was a continuation of the “Assessing Threats to Coldwater Habitat in Wisconsin’s Bois Brule River” study (Eliot, et.al. 2022). The key objectives of the 2021 Coldwater Legacy Project were to continue efforts ... -
EVALUATION OF SEDIMENT FOR TOXICITY AND BIOACCUMULATION OF LEAD
(1999-11-30)The Lake Superior Research Institute (LSRI), contracted with Blasland, Bouck & Lee, Inc. to measure lead concentrations in samples from seventeen sites and to evaluate the toxicity of sediment samples from ten of these ... -
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 ... -
EFFECT OF PH ON THE CHRONIC TOXICITY OF 2,4,5-TRICHLOROPHENOL TO THE FATHEAD MINNOW, PIMEPHALES PROMELAS
(1993-09)Chronic toxicity tests with the compound 2,4,5-trichlorophenol were conducted using the fathead minnow, Pimephales promelas Rafinesque. The tests were conducted with flowing water for a duration of 28 days at three ... -
DISULFOTON: ACUTE TOXICITY TO DAPHNIA MAGNA UNDER STATIC RENEWAL CONDITIONS
(1991-03-19)The test substance, disulfoton, 0,0-diethyl S-[2-(ethylthio)ethyl] phosphorodithioate (C8H1902PS3) is a colorless oily liquid that is used commercially as an insecticide and acaricide. It is used for control of many ... -
BENCH-SCALE TESTS OF THE NEWMAN ZONE OS BALLAST WATER DEOXYGENATION TREATMENT
(2023-02-13)This technical report presents findings from bench-scale tests evaluating the performance of the Newman Zone OS Ballast Water Deoxygenation Treatment, hereafter Newman Zone OS, developed by RNAS Remediation Products of ... -
Development of Bioassay Procedures for Defining Pollution of Harbor Sediments - Project Summary
(1980)This research investigates bioassay methods which may be useful in assessing the degree of pollution of harbor sediments. Procedures studied include 96 hr toxicity tests employing Hexagenia limbata, Daphnia magna and ... -
CROSS CHANNEL HOLE AND BUNGE SLIP FISH ASSESSMENT
(1989-10)The Northwest Regional Planning Commission, the City of Superior and the Wisconsin Department of Natural Resources are with financial assistance from the Wisconsin Coastal Management Program, preparing a plan for long ... -
City of Superior Tree Survey
(1991)Trees are widely viewed by the general public and scientists as very important for the well-being of the people who reside in cities, giving a pleasant aesthetic experience for the city dwellers, as a result of colorful ... -
Application of the Chironomus tentans Survival and Growth Bioassay in Evaluating Sediment Quality from Four Great Lakes Harbors
(1993-12)Sediment samples from four Great Lakes harbors were evaluated for possible effects of toxic chemicals using a 10-day bioassay with larval stages of the insect, Chironomus tentans. The bioassay of each sediment was ... -
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 ... -
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 ...
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