Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16731
Targeted stock identification using multilocus genotype 'familyprinting' Targeted stock identification using multilocus genotype 'familyprinting'
We present an approach to stock identification of small, targeted populations that uses multilocus microsatellite genotypes of individual mating adults to uniquely identify first- and second-generation offspring in a mixture. We call the approach ‘familyprinting’; unlike DNA fingerprinting where tissue samples of individuals are matched, offspring from various families are assigned to...
Authors
Benjamin Letcher, Tim L. King
The effect of migration distance and timing on metabolic enzyme activity in an anadromous clupeid, the American shad (Alosa sapidissima) The effect of migration distance and timing on metabolic enzyme activity in an anadromous clupeid, the American shad (Alosa sapidissima)
The American shad (Alosa sapidissima) is a common anadromous fish species with ecological and economic importance on the east coast of North America. This iteroparous species undergoes an energetically costly upriver spawning migration in spring. To evaluate metabolic changes associated with this migration, we assessed the maximum activity of five metabolic enzymes (citrate synthase (CS)
Authors
J. B. K. Leonard, S. D. McCormick
Aphanomyces as a cause of ulcerative skin lesions of menhaden from Chesapeake Bay Tributaries Aphanomyces as a cause of ulcerative skin lesions of menhaden from Chesapeake Bay Tributaries
During the summer and fall of 1997, an unusually high prevalence of skin lesions in fishes from Chesapeake Bay tributaries as well as two fish kills in the Pocomoke River stimulated significant public concern. Atlantic menhaden Brevoortia tyrannus were the most frequent target of the acute fish kills and displayed skin lesions that were attributed to the presence of the toxic...
Authors
V. S. Blazer, W. K. Vogelbein, Christine L. Densmore, E.B. May, J. H. Lilley, D. E. Zwerner
A siphon gage for monitoring surface-water levels A siphon gage for monitoring surface-water levels
A device that uses a siphon tube to establish a hydraulic connection between the bottom of an onshore standpipe and a point at the bottom of a water body was designed and tested for monitoring surface-water levels. Water is added to the standpipe to a level sufficient to drive a complete slug of water through the siphoning tube and to flush all air out of the system. The water levels in...
Authors
Timothy D. McCobb, Denis R. LeBlanc, Roy S. Socolow
USGS ground-water flow model : an essential tool for managing the water supply of the Virginia Coastal Plain USGS ground-water flow model : an essential tool for managing the water supply of the Virginia Coastal Plain
Virginia needs a reliable water supply to sustain its growing population and expanding economy. In 1990, the aquifers in the Coastal Plain supplied about 100 million gallons per day (mgd) to the citizens, businesses, and industries of Virginia. It is estimated that by the year 2000, demand will increase by another 10 mgd and likely will continue to increase in future years. Ground water...
Authors
Martha L. Erwin, Randolph E. McFarland, Bruce T. Scott
Abundance of plankton species in Lake Michigan and incidence of early mortality syndrome from 1983 to 1992 Abundance of plankton species in Lake Michigan and incidence of early mortality syndrome from 1983 to 1992
No abstract available at this time
Authors
J. P. Hinterkopf, D. C. Honeyfield, J. Markarewicz, T. Lewis
Double-crested cormorant predation on smallmouth bass and other fishes of the eastern basin of Lake Ontario: overview and summary Double-crested cormorant predation on smallmouth bass and other fishes of the eastern basin of Lake Ontario: overview and summary
No abstract available at this time
Authors
C.P. Schneider, A. Schiavone, T.H. Eckert, R.D. McCullough, B.F. Lantry, D.W. Einhouse, J.R. Chrisman, C.M. Adams, J. H. Johnson, R. M. Ross
Special species addendum for the Marshalls Creek traffic relief study report on impacts to Notropis, eastern mudminnow, Umbra pygmaea (DeKay) and American brook lamprey, Lampetra appendix DeKay Special species addendum for the Marshalls Creek traffic relief study report on impacts to Notropis, eastern mudminnow, Umbra pygmaea (DeKay) and American brook lamprey, Lampetra appendix DeKay
No abstract available at this time
Authors
R. M. Ross, D. S. Dropkin
Control of exotic species: European wild boar Control of exotic species: European wild boar
No abstract available at this time
Authors
J.D. Peine, R. Lancia
Stream water quality in coal mined areas of the lower Cheat River Basin, West Virginia and Pennsylvania, during low-flow conditions, July 1997 Stream water quality in coal mined areas of the lower Cheat River Basin, West Virginia and Pennsylvania, during low-flow conditions, July 1997
Introduction The Cheat River Basin is in the Allegheny Plateau and Allegheny Mountain Sections of the Appalachian Plateau Physiographic Province (Fenneman, 1946) and is almost entirely within the state of West Virginia. The Cheat River drains an area of 1,422 square miles in Randolph, Tucker, Preston, and Monongalia Counties in West Virginia and Fayette County in Pennsylvania. From its...
Authors
Donald R. Williams, Mary E. Clark, Juliane B. Brown
Lithogeochemical character of the near-surface bedrock in the Connecticut, Housatonic, and Thames River Basins Lithogeochemical character of the near-surface bedrock in the Connecticut, Housatonic, and Thames River Basins
This data layer shows the generalized lithologic and geochemical (lithogeochemical) character of near-surface bedrock in the Connecticut, Housatonic, and Thames River Basins and several other small basins that drain into Long Island Sound from Connecticut. The area includes most of Connecticut, western Massachusetts, eastern Vermont, western New Hampshire, and small parts of Rhode Island...
Authors
Gilpin R. Robinson, John D. Peper, Peter A. Steeves, Leslie A. DeSimone
Physical, chemical, and biological data for selected streams in Chester County, Pennsylvania, 1981-94 Physical, chemical, and biological data for selected streams in Chester County, Pennsylvania, 1981-94
Physical, chemical, and biological data were collected at 51 sampling sites in Chester County, Pa., from 1970 through 1994 as part of the Stream Conditions of Chester County Program. This report presents data collected from 1981 through 1994. Physical data include water temperature, instantaneous stream discharge, pH, alkalinity, specific conductance, and dissolved oxygen. Chemical data...
Authors
Andrew G. Reif