Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16734
Water resources and the hydrologic effects of coal mining in Washington County, Pennsylvania Water resources and the hydrologic effects of coal mining in Washington County, Pennsylvania
Washington County occupies an area of 864 square miles in southwestern Pennsylvania and lies within the Pittsburgh Plateaus Section of the Appalachian Plateaus physiographic province. About 69 percent of the county population is served by public water-supply systems, and the Monongahela River is the source for 78 percent of the public-supply systems. The remaining 31 percent of the...
Authors
Donald R. Williams, John K. Felbinger, Paul J. Squillace
Growth, survival and food conversion of Atlantic salmon reared at four different densities with common water quality Growth, survival and food conversion of Atlantic salmon reared at four different densities with common water quality
Our objective was to determine the maximum effective rearing density for Atlantic salmon (Salmo salar) at 17.5°C, a temperature typically used in hatcheries to accelerate growth. We reared 5.8‐g (mean weight) parr for 80 d to final rearing densities of 14–55 kg/m2 (rearing unit bottom area) or 80–310 kg/m3 (rearing unit volume). Weight gain was slightly depressed in fish at a final...
Authors
R. W. Soderberg, J. W. Meade, Lori A. Redell
Geophysical investigations of the tectonic boundary between East and West Antarctica Geophysical investigations of the tectonic boundary between East and West Antarctica
The Transantarctic Mountains (TAM), which separate the West Antarctic rift system from the stable shield of East Antarctica, are the largest mountains developed adjacent to a rift. The cause of uplift of mountains bordering rifts is poorly understood. One notion based on observations of troughs next to many uplifted blocks is that isostatic rebound produces a coeval uplift and subsidence...
Authors
Uri S. ten Brink, S. Bannister, B. C. Beaudoin, T.A. Stern
Refinement of the evaluation of the role of CO2 in modifying estimates of the pressure of epithermal mineralization Refinement of the evaluation of the role of CO2 in modifying estimates of the pressure of epithermal mineralization
Pressure is the most important of the intensive parameters for relating epithermal mineralization to the geologic setting. This paper describes the limitations on pressure (and therefore depth) of mineralization that may reasonably be derived from simple observations of the behavior of fluid inclusions (i.e., the existence of ice or CO 2 clathrate on the liquidus, the amount of expansion...
Authors
P.B. Barton, I.-M. Chou
Determining the prevalence of infectious pancreatic necrosis virus in asymptomatic brook trout Salvelinus fontinalis: A study of clinical samples and processing methods Determining the prevalence of infectious pancreatic necrosis virus in asymptomatic brook trout Salvelinus fontinalis: A study of clinical samples and processing methods
No abstract available.
Authors
P. E. McAllister, W. B. Schill, W. J. Owens, D. L. Hodge
A method for classifying land loss by morphology and process A method for classifying land loss by morphology and process
No abstract available.
Authors
L.D. Wayne, L. D. Britsch, M.R. Byrnes, S. Penland, S.J. Williams
Plasmid-mediated romet resistance of Edwardsiella ictaluri Plasmid-mediated romet resistance of Edwardsiella ictaluri
Romet®, a potentiated sulfa drug composed of five parts sulfadimethoxine and one part ormetoprim, is used to treat channel catfish Ictalurus punctatus infected with Edwardsiella ictaluri, the causal agent of enteric septicemia of catfish (ESC). Recently, several Romet-resistant isolates of E. ictaluri were isolated from channel catfish that had died from ESC in Virginia and Mississippi...
Authors
C. E. Starliper, R.K. Cooper, E. B. Shotts, P.W. Taylor
Monitoring goals and programs of the United States Fish and Wildlife Service Monitoring goals and programs of the United States Fish and Wildlife Service
The United States Fish and Wildlife Service coordinates several surveys that collect information on the population status of migratory birds in North America. The North American Breeding Bird Survey is the primary source of population information on nongame birds during the breeding season, and waterfowl surveys are conducted during breeding and wintering seasons. The surveys are...
Authors
J.R. Sauer
Infectious and parasitic diseases of cranes Infectious and parasitic diseases of cranes
No abstract available.
Authors
J. W. Carpenter
Puerto Rican parrot (Amazona vittata) reproductive behavior: a guideline for management of active nests Puerto Rican parrot (Amazona vittata) reproductive behavior: a guideline for management of active nests
One explanation for the failure of intensively monitored Puerto Rican Parrot nests is that observers may lack the information needed to evaluate pair behavior and to recognize behaviors indicative of nest problems. I examined the behavior of Puerto Rican Parrots during eight non-problematic and six problematic nesting attempts to 1) describe behavior of pairs that experienced no notable...
Authors
K.A. Wilson
Horse impacts: research findings and their implications Horse impacts: research findings and their implications
No abstract available.
Authors
C.S. Robbins
Where's Waldo (and the snakes)? Where's Waldo (and the snakes)?
No abstract available.
Authors
G.H. Rodda