Publications
Browse more than 150,000 publications authored by our scientists over the past 100+ year history of the USGS. Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.
Upper Midwest Environmental Sciences Center Publications
Filter Total Items: 3227
Crop grouping: A proposal for public aquaculture
No abstract available.
Authors
W.H. Gingerich, G. R. Stehly, K.J. Clark, W. L. Hayton
Toxicity of hydrogen peroxide treatments to rainbow trout eggs
Hydrogen peroxide treatments of 0, 500, 1,000, and 3,000 I?L/L, concentrations that were multiples of the Low Regulatory Priority limit of 500 I?L/L, were administered for 15 min every weekday (Mondaya??Friday) to eggs of rainbow trout Oncorhynchus mykiss and steelhead (anadromous rainbow trout) to determine the margin of safety existing for standard egg treatments. All untreated and treated eggs
Authors
M.P. Gaikowski, J.J. Rach, J.J. Olson, R.T. Ramsay
Avoidance behavior of ruffe exposed to selected formulations of piscicides
Ruffe were introduced into Duluth Harbor, Minnesota in the early 1980s, probably by release of ballast water from sea-going freighters. Since then, it has become the most abundant species in the fish community. The sensitivity of ruffe to a number of piscicides has been demonstrated, however, the feasibility of using piscicides to control populations depends on whether ruffe can detect piscicides
Authors
Verdel K. Dawson, Terry D. Bills, Michael A. Boogaard
Method for inducing saprolegniasis in channel catfish
A method was developed to uniformly and systematically induce saprolegniasis in channel catfish Ictalurus punctatus. Three different methods for inducing saprolegniasis were evaluated in waters containing known zoospore concentrations of Saprolegnia parasitica: (1) low-temperature shock to induce immunosuppression; (2) physical abrasion stress; and (3) a combination of both low temperature shock a
Authors
G.E. Howe, J.J. Rach, J.J. Olson
Liquid chromatographic determination of oxytetracycline in edible fish fillets from six species of fish
The approved use of oxytetracycline (OTC) in U.S. aquaculture is limited to specific diseases in salmonids and channel catfish. OTC may also be effective in controlling diseases in other fish species important to public aquaculture, but before approved use of OTC can be augmented, an analytical method for determining OTC in fillet tissue from multiple species of fish will be required to support re
Authors
J.R. Meinertz, G. R. Stehly, W.H. Gingerich
Effects of immobilization by electricity and MS-222 on brown trout broodstock and their progeny
To determine the effects of electrically and chemically induced immobilization on postspawn broodstock and their progeny, age-2 and age-3 female broodstock and age-2 male broodstock of brown trout Salmo trutta were immobilized with electricity or tricaine methanesulfonate (MS-222), stripped of their eggs or milt, and weighed. Eggs taken from electrically immobilized females were fertilized with mi
Authors
S.D. Redman, J.R. Meinertz, M.P. Gaikowski
Lesser scaup (Aythya affinis)
Abstract not submitted to date
Authors
J. E. Austin, Christine M. Custer, A. D. Afton
Nesting success of songbirds in floodplain and upland forests of the upper Mississippi River basin (research summary)
Abstract not submitted to date
Authors
M. G. Knutson
Geology, ground-water flow, and dissolved-solids concentrations in ground water along hydrogeologic sections through Wisconsin aquifers
A cooperative project between the U.S. Geological Survey (USGS) and the Wisconsin Department of Natural Resources (DNR) was begun with the objectives of describing water quality and its relation to the hydrology of Wisconsin's principal aquifers and summarizing instances of ground-water contamination and quality problems from information available in DNR files. The first objective was met by a hyd
Authors
P.A. Kammerer
Regional and local hydrogeology of calcareous fens in the Minnesota river basin, USA
Six calcareous fens in the Minnesota River Basin, USA are in regional hydrogeologic settings with large discharges of calcareous ground water. These settings juxtapose topographically high areas of ground-water recharge with fens in lower areas of discharge, thus creating steep upward hydraulic gradients at the fens. Coarse glacial deposits with high permeability connect recharge areas to discharg
Authors
J.E. Almendinger, J.H. Leete
Peat characteristics and groundwater geochemistry of calcareous fens in the Minnesota River Basin, U.S.A
Calcareous fens in Minnesota are spring-seepage peatlands with adistinctive flora of rare calciphilic species. Peat characteristics andgroundwater geochemistry were determined for six calcareous fens in theMinnesota River Basin to better understand the physical structure andchemical processes associated with stands of rare vegetation. Onset of peataccumulation in three of the fens ranged from abou
Authors
J.E. Almendinger, J.H. Leete
Estimating ice-affected streamflow by extended Kalman filtering
An extended Kalman filter was developed to automate the real-time estimation of ice-affected streamflow on the basis of routine measurements of stream stage and air temperature and on the relation between stage and streamflow during open-water (ice-free) conditions. The filter accommodates three dynamic modes of ice effects: sudden formation/ablation, stable ice conditions, and eventual eliminatio
Authors
D. J. Holtschlag, M.S. Grewal