Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16743
Special techniques, part D: Reintroduction techniques Special techniques, part D: Reintroduction techniques
No abstract available.
Authors
Meenakshi Nagendran, R.P. Urbanek, D. H. Ellis
Keys to a successful project: Associated data and planning: Data standards Keys to a successful project: Associated data and planning: Data standards
No abstract available.
Authors
R.W. McDiarmid, D.E. Wilson
Hydrogeology and ground-water quality of Valley Forge National Historical Park, Montgomery County, Pennsylvania Hydrogeology and ground-water quality of Valley Forge National Historical Park, Montgomery County, Pennsylvania
Valley Forge National Historical Park is just southwest of the Commodore Semiconductor Group (CSG) National Priorities List (Superfund) Site, a source of volatile organic compounds (VOC's) in ground water. The 7.5-square-mile study area includes the part of the park in Lower Providence and West Norriton Townships in Montgomery County, Pa., and surrounding vicinity. The park is underlain...
Authors
Ronald A. Sloto, B. Craig McManus
Altitude and configuration of the potentiometric surface in the crystalline and metasedimentary rocks in Birmingham, Newlin, Pennsbury, and Pocopson Townships and parts of East Marlborough and Kennett Townships, Chester County, Pennsylvania, June 1994 thr Altitude and configuration of the potentiometric surface in the crystalline and metasedimentary rocks in Birmingham, Newlin, Pennsbury, and Pocopson Townships and parts of East Marlborough and Kennett Townships, Chester County, Pennsylvania, June 1994 thr
A map showing ground-water levels in crystalline and metasedimentary rocks in Birmingham, Newlin, Pennsbury, and Pocopson Townships and parts of East Marlborough and Kennett Townships, Chester County, Pennsylvania, was constructed from water levels measured in wells from June 1994 through November 1995. Pre-1994 measurements were incorporated on the map to provide control in areas where...
Authors
Charles R. Wood, William C. Wettstein, Stephen S. Aichele, James Joyce, Frank M. Schneider
Altitude and configuration of the potentiometric surface in the crystalline and metasedimentary rocks in Sadsbury, West Caln, and West Sadsbury townships, Chester County, Pennsylvania, April 1993 through August 1994 Altitude and configuration of the potentiometric surface in the crystalline and metasedimentary rocks in Sadsbury, West Caln, and West Sadsbury townships, Chester County, Pennsylvania, April 1993 through August 1994
A map showing ground-water levels in crystalline and metasedimentary rocks in Sadsbury, West Caln, and West Sadsbury Townships, Chester County, Pennsylvania, was constructed from water levels measured in wells from April 1993 through August 1994. Pre-1993 measurements were incorporated on the map to provide control in areas where more recent data were not available. Because little ground...
Authors
William C. Wettstein, Charles R. Wood
Seasonal habitat use by brook trout, Salvelinus fontinalis (Mitchill), in a second-order stream Seasonal habitat use by brook trout, Salvelinus fontinalis (Mitchill), in a second-order stream
Seasonal habitat use by over-yearling and under-yearling brook trout, Salvelinus fontinalis (Mitchill), was examined in a second-order stream in north-central Pennsylvania, USA. The habitat occupied by brook trout and available habitat were determined in a 0.5-km stream reach during the spring, summer and autumn of 1989 and the spring and summer of 1990. Cover, depth, substrate and...
Authors
J. H. Johnson, D. S. Dropkin
AMS radiocarbon analyses from Lake Baikal, Siberia: Challenges of dating sediments from a large, oligotrophic lake AMS radiocarbon analyses from Lake Baikal, Siberia: Challenges of dating sediments from a large, oligotrophic lake
A suite of 146 new accelerator-mass spectrometer (AMS) radiocarbon ages provides the first reliable chronology for late Quaternary sediments in Lake Baikal. In this large, highly oligotrophic lake, biogenic and authigenic carbonate are absent, and plant macrofossils are extremely rare. Total organic carbon is therefore the primary material available for dating. Several problems are...
Authors
Steven M. Colman, Glenn A. Jones, M. Rubin, J.W. King, J.A. Peck, W. H. Orem
Sedimentary processes in the salt deformation province of the Texas-Louisiana continental slope Sedimentary processes in the salt deformation province of the Texas-Louisiana continental slope
No abstract available.
Authors
David C. Twichell, Catherine M. Delorey
Smolt production Smolt production
No abstract available at this time
Authors
W.C. Clarke, R.L. Saunders, S. D. McCormick
Effect of a thiamine antagonist on blood thiamine levels in lake trout Effect of a thiamine antagonist on blood thiamine levels in lake trout
No abstract available at this time
Authors
E. Lee, D. C. Honeyfield
Water Resources Data, Virginia, Water Year 1995, Volume 1. Surface-Water Discharge and Surface-Water Quality Records Water Resources Data, Virginia, Water Year 1995, Volume 1. Surface-Water Discharge and Surface-Water Quality Records
No abstract available.
Authors
R.K. White, Donald C. Hayes, M.R. Eckenwiler, D.L. Belval, P.E. Herman
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