Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16731
Habitat associations of birds in the Georgia piedmont during winter Habitat associations of birds in the Georgia piedmont during winter
During three winter seasons (1991-1994), we studied the distribution and abundance of birds in three habitat types of the Georgia Piedmont. Bird densities were calculated using data from 2160 variable circular-plot counts, 720 each in the interiors of the three habitats. Habitat variables were measured in 135 0.04-ha circles, 45 in each of the three habitats. The objective was to compare...
Authors
Donald H. White, C. B. Kepler, Jeff S. Hatfield, P.W. Sykes, J.T. Seginak
New records of predaceous diving beetles (Coleoptera:Dytiscidae) in Maine New records of predaceous diving beetles (Coleoptera:Dytiscidae) in Maine
Locations, habitat descriptions, and collection dates are listed for new records of 4 genera and 12 species of predaceous diving beetles (Coleoptera: Dytiscidae) in Maine. Previously, 17 genera and 53 species of the aquatic beetle were reported from Maine.
Authors
L.R. Boobar, K.E. Gibbs, J. R. Longcore, A.M. Perillo
Purification and immunochemical detection of β-naphthoflavone-and phenobarbital-induced avian cytochrome P450 enzymes Purification and immunochemical detection of β-naphthoflavone-and phenobarbital-induced avian cytochrome P450 enzymes
Livers from mallards (Anas platyrhynchos) were treated with either β-naphthoflavone (50 mg/kg) or phenobarbital (70 mg/kg). Purification of induced hepatic cytochrome P450 was accomplished using both DEAE and hydroxyapatite columns, as well as sodium dodecyl sulfate polyacrylamide gel electrophoresis separation. Polyclonal antibodies to these proteins were then produced in young male New...
Authors
R.L. Brown, P.E. Levi, E. Hodgson, M. J. Melancon
Fluorspar Fluorspar
The U.S. consumed about 525 kt of fluorspar in 1995, with more than 70 percent being used for the production of hydrofluoric acid. Fluorspar is also used for the production of aluminum and steel. About 558 kt of fluorspar was imported in 1995, with a further 186 kt made available from the National Defense Stockpile. The market in the U.S. is expected to grow as increasing use is made of
Authors
M. Miller
Implication of thiamine deficiency in the ethiology of early mortality syndrome of Lake Michigan coho salmon Implication of thiamine deficiency in the ethiology of early mortality syndrome of Lake Michigan coho salmon
No abstract available at this time.
Authors
D. C. Honeyfield, A.J. Quan, J. Hnath
[Obituary] William H. Stickel, 1912-1996 [Obituary] William H. Stickel, 1912-1996
No abstract available.
Authors
L.F. Stickel
The influence of alkalinity and water hardness interactions on salinity toxicity The influence of alkalinity and water hardness interactions on salinity toxicity
No abstract available.
Authors
I.R. Hardin, P. V. Winger, P. J. Lasier, M.S. Brewer
Waterfowl habitat management in the Mississippi Alluvial Valley Waterfowl habitat management in the Mississippi Alluvial Valley
No abstract available.
Authors
K. J. Reinecke, C.K. Baxter
Breeding bird census: Planted cottonwood forest -outside levee Breeding bird census: Planted cottonwood forest -outside levee
No abstract available.
Authors
Daniel J. Twedt
Breeding bird census: Coppiced cottonwood forest I & II Breeding bird census: Coppiced cottonwood forest I & II
No abstract available.
Authors
Daniel J. Twedt
Seed deterioration in flooded agricultural fields during winter Seed deterioration in flooded agricultural fields during winter
We determined rate of seed deterioration for 3 crops (corn, rice, and soybean) and 8 weeds commonly found in agricultural fields and moist-soil management units in the Mississippi Alluvial Valley (MAV). The weeds were broadleaf signalgrass (Brachiaria platyphylla), junglerice barnyardgrass (Echinochloa colonum), morningglory (Ipomoea sp.), panic grass (Panicum sp.), bull paspalum...
Authors
C.O. Nelms, D.J. Twedt
Development of cytochromes P450 in avian species as a biomarker for environmental contaminant exposure and effect: Procedures and baseline values Development of cytochromes P450 in avian species as a biomarker for environmental contaminant exposure and effect: Procedures and baseline values
As in mammals and fish, birds respond to many environmental contaminants with induction of hepatic cytochromes P450. In order to monitor cytchromes P450 in specific avian species, for assessing the status of that species or the habitat it utilizes, it is necessary to have background information on the appropriate assay conditions and the responsiveness of cytochrome P450 induction in...
Authors
M. J. Melancon