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: 3223
High-performance liquid chromatographic resolution and quantification of a dilacton antibiotic mixture (antimycin A)
High-performance liquid chromatographic (HPLC) conditions are presented for the separation and quantitative determination of a homologous antibiotic complex (antimycin A). Combined HPLC and chemical ionization mass spectrometry proved to be exceptionally useful for the structural identification of chromatographic components. Using electrochemical, fluorescence, and ultraviolet detectors, the minim
Authors
S. L. Abidi
Detection of diethylnitrosamine in nitrate-rich water following treatment with rhodamine flow tracers
No abstract available.
Authors
S. L. Abidi
Nesting ecology of roseate spoonbills at Nueces Bay, Texas
We conducted a study in 1978-1980 of the nesting ecology of Roseate Spoonbills (Ajaia ajaja) in a relatively polluted environment at Nueces Bay, Texas. For 154 marked nests, the average clutch size was 3.0 eggs; 73% of the eggs hatched, and 87% of the nests were successful (hatched at least 1 young). The average nest success rate (total fledglings:total eggs) was 50% or 1.5 fledglings per total ne
Authors
Donald H. White, Christine A. Mitchell, E. Cromartie
Nesting by one-year-old black-crowned night herons on Hope Island, Rhode Island
There have been few consistent reports concerning the frequency and success of nesting attempts by immature night herons of the genus Nycticorax. One- year-old Black-crowned Night Herons (Nycticorax nycticorax) mated to 2-yr-old or older birds built nests and incubated eggs in the wild (Gross 1923). In a captive colony, many 1-yr-old pairs of night herons courted and built nests, and one pair succ
Authors
Thomas W. Custer, William E. Davis
Status of projects in Minnesota, fiscal year 1981
No abstract available.
Authors
M.M. Diedrich, J. A. Jannis
Recent refinements in calibrating bed-load samplers
No abstract available.
Authors
D. W. Hubbell, H.H. Stevens, J. V. Skinner, J.P. Beverage
Test and design of automatic fluvial suspended-sediment samplers
No abstract available.
Authors
J. V. Skinner, J.P. Beverage
The effect of snowmelt on the water quality of Filson Creek and Omaday Lake, northeastern Minnesota
Sulfate concentration and pH were determined in surface water, groundwater, and precipitation samples collected in the Filson Creek watershed to evaluate the sources of sulfate in Filson Creek. During and immediately after snowmelt, sulfate concentrations in Filson Creek increased from about 2 to 14 mg/l. Concurrently, H+ ion activity increased from an average of 10−6.6 to 10−5.5. These changes su
Authors
D. I. Siegel
Simulated field testing methods for pest control agents in lotic and lentic ecosystems
No abstract available.
Authors
P.A. Gilderhus, R.M. Burress, C.R. Walker
Hydrogeology of the Buffalo aquifer, Clay and Wilkin Counties, West-Central Minnesota
The Buffalo aquifer is the principal source of ground-water supplies in the Moorhead, Minnesota area. The aquifer is an elongate deposit of sand and gravel, which locally contains water under confined conditions. Although the Buffalo aquifer contains about 270 billion gallons of water in storage, only 120 billion gallons could be withdrawn. Largest well yields occur along the deep trough in the ce
Authors
R. J. Wolf
Geology and hydrology for environmental planning in Marquette County, Michigan
Marquette County, in the glaciated area of the Upper Peninsula of Michigan, includes 1,878 square miles. Precipitation averages 32 inches per year. Bedrock and glacial deposits contain materials that are good aquifers. Sedimentary bedrock units generally yield sufficient water for domestic supply and, in places, may yield more than 100 gallons per minute to large-diameter wells. In the glacial dep
Authors
F. R. Twenter