Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16758
Viruses associated with diseases of walleye, sauger, and walleye x sauger hybrids Viruses associated with diseases of walleye, sauger, and walleye x sauger hybrids
No abstract available at this time
Authors
P. E. McAllister
Uranium-series disequilibrium, sedimentation, diatom frustules, and paleoclimate change in Lake Baikal Uranium-series disequilibrium, sedimentation, diatom frustules, and paleoclimate change in Lake Baikal
The large volume of water, approximately one-fifth of the total surface fresh water on the planet, contained in Lake Baikal in southeastern Siberia is distinguished by having a relatively high concentration of uranium (ca. 2 nM), and, together with the surface sediments, an unusually high234U238U alpha activity ratio of 1.95. About 80% of the input of uranium to the lake, with a234U238U...
Authors
D.N. Edgington, J. A. Robbins, Steven M. Colman, K.A. Orlandini, M.-P. Gustin
Behavioral changes associated with suboptimal prey densities for larval American shad Behavioral changes associated with suboptimal prey densities for larval American shad
Laboratory studies were conducted to determine the effects of suboptimal prey density and length of prey-deprivation period on swimming, feeding, and social behavior in larval American shad. Alosa sapidissima. Replicated prey-density treatments of 1,000, 500, and 0 Artemia nauplii/liter and deprivation periods of 0,2, and 4 days were established for an 8-day period. The duration or...
Authors
R. M. Ross, J. H. Johnson, R. M. Bennett, D. S. Dropkin
Comparison of gas chromatography/mass spectrometry and immunoassay techniques on concentrations of atrazine in storm runoff Comparison of gas chromatography/mass spectrometry and immunoassay techniques on concentrations of atrazine in storm runoff
Gas chromatography/mass spectrometry (GC/MS) and enzyme-linked immunosorbent assay (ELISA) techniques were used to measure concentrations of dissolved atrazine in 149 surface-water samples. Samples were collected during May 1992–September 1993 near the mouth of the White River (Indiana) and in two small tributaries of the river. GC/MS was performed on a Hewlett-Packard 5971 A, with...
Authors
Michael J. Lydy, D.S. Carter, Charles G. Crawford
Sediment mass-flow processes on a depositional lobe, outer Mississippi Fan Sediment mass-flow processes on a depositional lobe, outer Mississippi Fan
SeaMARC 1A sidescan-sonar imagery and cores from the distal reaches of a depositional lobe on the Mississippi Fan show that channelized mass flow was the dominant mechanism for transport of silt and sand during the formation of this part of the fan. Sediments in these flows were rapidly deposited once outside of their confining channels. The mass flows most likely originated from slope...
Authors
W. C. Schwab, H.J. Lee, D.C. Twichell, J. Locat, C.H. Nelson, W.G. McArthur, Neil H. Kenyon
Sedimentary processes in a tectonically active region: Puerto Rico north insular slope Sedimentary processes in a tectonically active region: Puerto Rico north insular slope
No abstract available.
Authors
Kathryn M. Scanlon, Douglas G. Masson
Book Review: Design of fishways and other fish facilities, 2nd edition Book Review: Design of fishways and other fish facilities, 2nd edition
The second edition of Charles Clay's Design of Fishways and Other Fish Facilities is the most contemporary and comprehensive work on the subject of fish passage.
Authors
B. Kynard, M. Odeh, A. Haro
Diagnostic criteria for selenium toxicosis in aquatic birds: dietary exposure, tissue concentrations, and macroscopic effects Diagnostic criteria for selenium toxicosis in aquatic birds: dietary exposure, tissue concentrations, and macroscopic effects
A feeding study with mallard ducks (Anas platyrhynchos) was conducted during March to July 1988 in Laurel, Maryland (USA), to identify diagnostic criteria for selenium toxicosis in birds. One-year-old male mallards in groups of 21 were fed diets containing 0, 10, 20, 40, or 80 parts per million (ppm) selenium, as seleno-DL-methionine, for 16 weeks. All ducks receiving 80 ppm died. Ducks...
Authors
P.H. Albers, D. E. Green, C. J. Sanderson
First report of the Maryland/DC Records Committee First report of the Maryland/DC Records Committee
No abstract available.
Authors
B. Peterjohn, P. Davis
Patch occupancy and dispersal of spruce grouse on the edge of its range in Maine Patch occupancy and dispersal of spruce grouse on the edge of its range in Maine
We surveyed 18 habitat patches (black spruce (Picea marinana) - tamarack (Larix larcina) wetlands) for spruce grouse (Dendragapus canadensis canadensis) on Mount Desert Island, Maine, during April-May in 1992 and 1993 to determine patch occupancy relative to patch area. We also equipped nine juvenile grouse with radio transmitters to determine movement and habitat use outside of patches...
Authors
S.A. Whitcomb, F. A. Servello, A.F. O'Connell
Managing designated campsites: Survey implications from Great Smoky Mountains National Park Managing designated campsites: Survey implications from Great Smoky Mountains National Park
No abstract available.
Authors
J. L. Marion, Y.-F. Leung
Prevalence and histopathology of shell disease in turtles from Lake Blackshear, Georgia Prevalence and histopathology of shell disease in turtles from Lake Blackshear, Georgia
Turtles in Lake Blackshear, Crisp County, Georgia (USA) were evaluated for shell disease during intensive trapping efforts on 8 and 9 May 1990. The disease was most prevalent in Pseudemys concinna (74%) and Trachemys scripta (35%). The degree of necrosis on the carapace was significantly positively correlated with the degree of necrosis on the plastron in T. scripta (rs = 0.50), but not...
Authors
J.E. Lovich, S.W. Gotte, C.H. Ernst, J. Harshbarger, A.F. Laemmerzahl