Potential for nitrosamine formation in seven fishery chemicals
S. L. Abidi, V. K. Dawson, R.C. Hubley Jr.
1986, Progressive Fish-Culturist (48) 301-302
In recent years, nitrosamines have been reported as possible causes of cancer, mutations, or birth defects. Inasmuch as these compounds may be formed by the interaction of certain amines with nitrite in the aquatic environment, we evaluated seven fishery chemicals for their potential to form nitrosamines: the experimental fish toxicant...
Status of fishery chemicals in 1985
R. A. Schnick, F. P. Meyer, D. F. Walsh
1986, Progressive Fish-Culturist (48) 1-17
A summary list of registered or approved products is provided for fishery uses, effective June 1985. The current status of efforts to register others and a discussion of the need for new products is presented....
Occurrence of white bass-white perch hybrids in Lake Erie
Thomas N. Todd
1986, Copeia (1986) 196-199
No abstract available....
Invertebrate communities associated with Bangia atropurpurea and Cladophora glomerata in western Lake Erie
E.W. Chilton, R.L. Lowe, K.M. Schurr
1986, Journal of Great Lakes Research (12) 149-153
The appearance of the marine alga Bangia atropurpurea (Rhodophyta) in Lake Erie has been followed by its rapid dispersal throughout the eulittoral zone of the lake. Bangia was extensively sampled to determine its suitability as a habitat for littoral organisms. Present data indicate that the only organisms capable of maintaining...
Influence of striped skunk removal on upland duck nest success in North Dakota
R. J. Greenwood
1986, Wildlife Society Bulletin (14) 6-11
Abstract has not been submitted...
Depth distribution, diet, and overwinter growth of lake trout (Salvelinus namaycush) in southeastern Lake Michigan sampled in December 1981 and March 1982
Gary W. Eck, LaRue Wells
1986, Journal of Great Lakes Research (12) 263-269
Lake trout were collected in graded-mesh gill nets and forage fishes were collected in trawls in mid December 1981 and late March 1982. The length ranges of 317 lake trout caught in December and 138 in March were 280–767 and 286–857...
Changes in growth and maturity of walleyes associated with stock rehabilitation in western Lake Erie, 1964-1983
Kenneth M. Muth, David R. Wolfert
1986, North American Journal of Fisheries Management (6) 168-175
The precipitous decline in abundance of walleyes (Stizostedion vitreum vitreum) in western Lake Erie during the 1960s caused major concerns for the future of this resource. Mercury contamination in walleyes in 1970 resulted in a moratorium on commercial fishing in United States and Canadian waters. The opportunity arose for resource...
ESTIMATION OF URBAN STORM-RUNOFF LOADS.
Nancy E. Driver, David J. Lystrom
Urbonas BenRoesner Larry A., editor(s)
1986, Conference Paper
The United States was divided into three regions, on the basis of mean annual rainfall, to decrease the variability in storm-runoff constituent loads and to improve regression relations with basin and climatic characteristics. Multiple-regression analyses, in progress, are being refined to determine the best regression models for each of the...
Effects of shrub coverages on birds of North Dakota mixed-grass prairies
T.W. Arnold, K.F. Higgins
1986, Canadian Field-Naturalist (100) 10-14
We studied the distribution and density of passerine birds in relation to Wolfberry (Symphoricarpos occidentalis) and Silverberry (Elaeagnus commutata) shrub coverages on mixed-grass prairies of central North Dakota. Birds were counted along shrubby and shrubless transects during the 1982 breeding season. Species richness and total density of birds were greater...
Winter ecology of bald eagles in southcentral Nebraska
G.R. Lingle, Gary L. Krapu
1986, Prairie Naturalist (18) 65-78
Approximately 200 bald eagles wintered along a 370-km section of the Platte and North Platte rivers in Nebraska during the winters of 1978-79 and 1979-80. A preponderance of the wintering eagles were adults, with the adult:subadult ratio highest during the harsh winter of 1978-79. Nocturnal roosts were located primarily in...
Environmental fate of mercury discharged into the upper Wisconsin River
R.G. Rada, J.E. Findley, J.G. Wiener
1986, Water, Air, & Soil Pollution (29) 57-76
The authors studied the distribution of Hg in sediments, fish, and crayfish in a 60 km reach of the Upper Wisconsin River that formerly received Hg in discharges from pulp and paper mills. The most heavily contaminated strata of sediments were deposited during the 1950s and early 1960s...
Patterns and causes of change in a cliff swallow colony during a 17-year period
Gary L. Krapu
1986, Prairie Naturalist (18) 109-114
The number of cliff swallow (Petrochelidon pyrrhonata) nests at a farmstead in southeastern North Dakota increased at an average annual rate of 87% with house sparrow (Passer domesticus) removal during 1957-60 and 1970-72. Harassment of nesting cliff swallows by house sparrows, adult swallow mortality from cold weather in late May,...
An integrated system for treating nitrogen supersaturated water
V. K. Dawson, L. L. Marking
1986, Progressive Fish-Culturist (48) 281-284
Groundwater is commonly supersaturated with nitrogen and must be treated before it is used for culturing fish–especially sensitive species such as lake trout (Salvelinus namaycush) and Atlantic salmon (Salmo salar). We treated water with an integrated system that passed water through a packed column aerator, then through a vacuum degasser,...
Feeding ecology of sandhill cranes during spring migration in Nebraska
K. J. Reinecke, Gary L. Krapu
1986, Journal of Wildlife Management (50) 71-79
We studied the food habits of midcontinent sandhill cranes (Grus canadensis) during spring 1978 and 1979 at their primary staging area along the Platte River and compared population food and foraging habitat requirements with availability. Crane diets varied among the 3 principal foraging habitats, but not between sexes, ages, or...
A Brief History of the U.S. Geological Survey
Mary C. Rabbitt
1986, Book
Distribution of early life history stages of fishes in selected pools of the upper Mississippi River
L. E. Holland
1986, Hydrobiologia (136) 121-130
Effective management of the fishery resources of the Upper Mississippi River and successful mitigation of the loss of critical habitat depend in part on an understanding of the reproductive and early life history requirements of the affected fishes. However, little is known about the use of...
Molt chronology of northern pintails in California
Michael R. Miller
1986, Journal of Wildlife Management (50) 57-64
Intensity and chronology of molt in 10 feather groups (head, neck, breast, belly, back, rump, side, scapular, tertial, and tail) were measured using percentages of developing feathers (pinfeathers) converted to molt scores (0-100) in samples plucked monthly from northern pintails (Anas acuta) collected by shooting from August through March 1980-82...
Loss of lampricides by adsorption on bottom sediments
V. K. Dawson, D.A. Johnson, J. L. Allen
1986, Canadian Journal of Fisheries and Aquatic Sciences (43) 1515-1520
Problems have been encountered in maintaining effective concentrations of the lampricides 3-trifluoromethyl-4-nitrophenol (TFM) and 5,2a??-dichloro-4a??-nitrosalicylanilide (Bayer 73) during treatments of certain Great Lakes tributaries. Concentrations of Bayer 73 decreased by more than 80% in a portion of the Ford River, Michigan, during treatment in 1980. Adsorption of Bayer 73 on...
Post fledging behavior of ferruginous hawks in North Dakota
P.M. Konrad, D.S. Gilmer
1986, Journal of Raptor Research (20) 35-39
Post-fledging activities of 18 Ferruginous Hawks (Buteo regalis) were studied in southcentral North Dakota during July and August 1979. The post-fledging period ranged from 10 to 40 d (mean = 23.1 d; N = 16). Haylands and native prairie grasslands were the principal land use types utilized by fledglings and...
Spring and summer survival of female mallards from northcentral Minnesota
Ronald E. Kirby, Lewis M. Cowardin
1986, Journal of Wildlife Management (50) 38-43
Seasonal survival of 109 adult female mallards (Anas platyrhynchos) fitted with radio transmitters was evaluated in northcentral Minnesota during 1968-74. Survival rates for the 169-day breeding and postbreeding period were: 1.0 during nest initiation (36 days), 0.798 during incubation (28 days), 0.943 during brood rearing (51 days), 0.947 during molt...
Computer program calculation of gas supersaturation in water
V. K. Dawson
1986, Progressive Fish-Culturist (48) 142-146
A short computer program, written in BASIC for the Apple IIe or IBM PC computer, efficiently performs all the calculations required to determine gas pressure and percent saturation values for water. Input for the program is limited to empirical determinations of barometric pressure, water temperature, differential dissolved gas pressures, dissolved...
Benthic community of the Savannah River below a peaking hydropower station
Patrick L. Hudson, S. Jerrine Nichols
1986, Journal of the Elisha Mitchell Scientific Society (102) 107-121
The Savannah River below Hartwell Dam, on the South Carolina-Georgia border, contains at least 206 benthic invertebrate taxa, even though this tailwater undergoes substantial daily fluctuations in water flow, temperature, and dissolved oxygen. Oligochaetes, chironomids, and amphipods dominate the community immediately below the dam. Farther downstream, larger organisms (i.e., Ephemeroptera,...
Comparison of wetland drainage during and after protection by 20-year easements
K.F. Higgins, R.O. Woodward
1986, Prairie Naturalist (12) 89-91
We determined drainage rates for wetlands in North and South Dakota with U.S. Fish and Wildlife Service 20-year easements, during (1961-1980) and after (1981-1984) contract protection. Average annual drainage rates were 10 times higher during the four postcontract years than during the 20 contract years on the same tracts of...
Determination of Ca, Mg, Na, Cd, Cu, Fe, K, Li and Zn in acid mine and reference water samples by inductively coupled plasma atomic fluorescence spectrometry
R. F. Sanzolone, A. L. Meier
1986, The Analyst (111) 645-649
An inductively coupled plasma atomic fluorescence spectrometric (ICP-AFS) method was used for the determination of nine elements in natural water. Reference and acid mine water samples were analysed by this method to demonstrate its usefulness for hydrogeochemical exploration. The elements were determined in two groups based on the compatibility of...
Immunoblot assay: a rapid and sensitive method for identification of salmonid fish viruses
P. E. McAllister, W. B. Schill
1986, Journal of Wildlife Diseases (22) 468-474
An immunoblot assay was used to identify the viruses of infectious pancreatic necrosis, infectious hematopoietic necrosis, and viral hemorrhagic septicemia. Viral antigen in infected cell culture supernatant was adsorbed onto nitrocellulose membrane or Whatman 541 filter paper and detected by enzyme-linked immunosorbent assay...
