Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16785
Estimating iron and aluminum content of acid mine discharge from a north-central Pennsylvania coal field by use of acidity titration curves
Determination of acidity provides a value that denotes the quantitative capacity of the sample water to neutralize a strong base to a particular pH. However, much additional information can be obtained from this determination if a titration curve is constructed from recorded data of titrant increments and their corresponding pH values. The curve can be used to identify buffer capabilities, the aci
Authors
A.N. Ott
Effect of Orthene on an unconfined population of the meadow vole (Microtus pennsylvanicus)
The possible impact on Microtus pennsylvanicus of ground applications of Orthene® insecticide was investigated in old-field habitats in northern Maryland during 1982 and 1983. The treatment grids in 1982 and 1983 were sprayed at 0.62 and 0.82 kg active ingredient/ha, respectively. A capture–recapture design robust to unequal capture probabilities was utilized to estimate population size, survival,
Authors
David A. Jett, James D. Nichols, James E. Hines
National water summary 1985: Hydrologic events and surface-water resources
The surface-water resources of the United States, the focal point for this National Water Summary, are extensively developed and managed to provide water supplies, hydroelectric power, navigation, recreational opportunities, and sufficient instream flows to maintain fish and wildlife habitats and adequate water quality. Surface water represents 77 percent of the Nation's total freshwater withdrawa
By
Water Resources Mission Area, Oklahoma-Texas Water Science Center, Pennsylvania Water Science Center, Kansas Water Science Center, Utah Water Science Center, Dakota Water Science Center, Central Midwest Water Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center
On the use of enumeration estimators for interspecific comparisons with comments on a 'trappability' estimator
No abstract available.
Authors
J. D. Nichols
Quantitative and qualitative studies of gut flora in striped bass from estuarine and coastal marine environments
Examination of the intestinal contents of 130 striped bass (Morone saxatilis) collected from the Hudson River and Long Island Sound during May to October 1981 showed that opportunistic fish pathogens—especially Aeromonas hydrophila—predominated in samples from both locations. Other isolates from both groups of striped bass included Vibrio, pseudomonads, flavobacteria, Alcaligenes, and enterics. Sm
Authors
R.D. MacFarlane, J.J. McLaughlin, G. L. Bullock
Immunoblot assay: a rapid and sensitive method for identification of salmonid fish viruses
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 techniques. The immunoblot assay took less than 4 hr to perform and requ
Authors
P. E. McAllister, W. B. Schill
Acute oral toxicity of sodium cyanide in birds
Sensitivities of six avian species, black vulture (Coragyps atratus), American kestrel (Falco sparverius), Japanese quail (Coturnix japonica), domestic chicken (Gallus domesticus), eastern screech-owl (Otus asio), and European starling (Sturnus vulgaris), to acute poisoning by sodium cyanide (NaCN) were compared by single dose LD50's. Three species, domestic chickens, black vultures, and turkey vu
Authors
Stanley N. Wiemeyer, E. F. Hill, J. W. Carpenter, A. J. Krynitsky
Canine parvovirus infection in wolves (Canis lupus) from Minnesota
No abstract available.
Authors
L. D. Mech, S.M. Goyal, C.N. Bota, U. S. Seal
An epizootic in chinook salmon (Oncorhynchus tshawytscha) caused by a sorbitol-positive serovar 2 strain of Yersinia ruckeri
Enteric redmouth disease is described in chinook salmon (Oncorhynchus tshawytscha) at a state hatchery in Sand Ridge, Illinois. Biochemical, isoenzyme, and serological data indicated that the epizootic was caused by a sorbitol-fermenting Serovar 2 strain of Yersinia ruckeri. In laboratory experiments the isolate was pathogenic for both brook trout (Salvelinus fontinalis) and Atlantic salmon (Salmo
Authors
R.C. Cipriano, W. B. Schill, S. W. Pyle, R. Horner
Areal and temporal variability of selected water-quality characteristics in two hydrologic-benchmark basins in the northeastern United States
Two U.S. Geological Survey National Hydrologic Benchmark stations--Young Womans Creek near Renovo, Pennsylvania and Esopus Creek at Shandaken, New York--were studied to (1) define, both areally and temporally, variations of stream acidity and other water quality characteristics within the basins; (2) evaluate how well the data collected at the Benchmark station represent the water quality conditio
Authors
R.A. Hainly, J.R. Ritter
DDE, DDT + dieldrin: Residues in American kestrels and relations to reproduction
Captive American kestrels (Falco sparverius) given long-term dietary dosages of DDT and dieldrin in combination, at low and high rates, were compared with controls to determine the effects of the toxicants on reproductive success and eggshell thickness. Additional kestrels were dosed with DDE to determine its effect on shell thickness. Tissues of birds that died or were sacrificed, and eggs, were
Authors
Stanley N. Wiemeyer, Richard D. Porter, Gary L. Hensler, J.R. Maestrelli
Embryonic mortality and abnormalities of aquatic birds: Apparent impacts of selenium from irrigation drainwater
Severe reproductive impacts were found in aquatic birds nesting on irrigation drainwater ponds in the San Joaquin Valley of California. Of 347 nests studied to late incubation or to hatching, 40.6% had at least one dead embryo and 19.6% had at least one embryo or chick with an obvious external anomaly. The deformities were often multiple and included missing or abnormal eyes, beaks, wings, legs an
Authors
H. M. Ohlendorf, D. J. Hoffman, M. K. Saiki, T. W. Aldrich