Browsing Lake Superior Research Institute by Title
Now showing items 101-120 of 413
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Development of Bioassay Procedures for Defining Pollution of Harbor Sediments
(1977)Six sites in the Duluth-Superior Harbor have been sampled. The sites 1 (Allouez Bay area), 2 (Superior Ore Docks area), 3 (Lakehead Transshipment Terminal area), 4 (Superior Sewage Treatment Plant area) and 6 (Minnesota ... -
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 ... -
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 ... -
Douglas County, Wisconsin Aquatic Invasive Species Strategic Plan
(Lake Superior Research Institute, 2010-03-18) -
DULUTH SUPERIOR HARBOR FISHERY SURVEY - PROGRESS REPORT
(1977-07-15)Field work for the Duluth-Superior Harbor Fishery Survey was initiated on 11 April. Sampling has been conducted with an electrofishing boat (generally using 250 volt, 11 amp, D.C. current), fyke nets_ (3 x 6' ... -
ECOLOGICAL ASSESSMENT OF FACTORS AFFECTING WALLEYE OA SURVIVAL IN THE LOWER FOX RIVER
(1986-10)The Fox River is a major tributary into Lake Michigan's Green Bay with an average discharge of 117 m3 sec-1 and an average gradient of 0.81 m km-1 in the last 62 km of the river (Epstein et al., 1974). Since the early ... -
ECOLOGICAL ASSESSMENT OF FACTORS AFFECTING WALLEYE OVA SURVIVAL IN THE LOWER FOX RIVER
(1986-10)The Fox River is a major tributary into Lake Michigan's Green Bay with an average discharge of 117 m3 sec-1 and an average gradient of 0.81 m km-1 in the last 62 km of the river (Epstein et al., 1974). Since the early ... -
ECOLOGICAL ASSESSMENT OF FACTORS AFFECTING WALLEYE OVA SURVIVAL IN THE LOWER FOX RIVER
(1986-10)The Fox River is a major tributary into Lake Michigan's Green Bay with an average discharge of 117 m3 sec-1 and an average gradient of 0.81 m km-1 in the last 62 km of the river (Epstein et al., 1974). Since the early ... -
Ecology of Western Lake Superior Region
(1983)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. ...