Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16905
Relation of lead exposure to sediment ingestion in mute swans on the Chesapeake Bay, USA Relation of lead exposure to sediment ingestion in mute swans on the Chesapeake Bay, USA
Although wildlife risk assessments are generally based on the accumulation of environmental contaminants through food chains, wildlife may also ingest contaminants incidentally with sediment. Forty-two mute swans (Cygnus olor) were collected from unpolluted portions of central Chesapeake Bay, Maryland, USA, in spring 1995, and their intestinal digesta were analyzed for 13 metals...
Authors
W. N. Beyer, Daniel D. Day, Alexandra Morton, Y. Pachepsky
Use of remote sensing techniques Use of remote sensing techniques
No abstract available.
Authors
R. S. Williams, D. K. Hall
Comment on "New evidence of magmatic diapirs in the intermediate crust under the Dead Sea, Israel" by Nitzan Rabinowitz, Jean Steinberg, and Yossi Mart Comment on "New evidence of magmatic diapirs in the intermediate crust under the Dead Sea, Israel" by Nitzan Rabinowitz, Jean Steinberg, and Yossi Mart
No abstract available.
Authors
A. Hofstetter, M. Rybakov, Uri S. ten Brink
Environmental impacts on the southern Florida coastal waters: A history of change in Florida Bay Environmental impacts on the southern Florida coastal waters: A history of change in Florida Bay
Analyses of four cores located in the northern transitional, eastern, and central portions of Florida Bay reveal historical patterns of change in salinity and seagrass distribution. Salinity and the distribution of seagrass beds are two critical issues for the restoration of Florida Bay. The distribution of benthic fauna in Bob Allen 6A and Russell Bank 19B cores illustrates changes in
Authors
G. Lynn Wingard, S. E. Ishman, C. W. Holmes
Estimation of temporal variability of survival in animal populations Estimation of temporal variability of survival in animal populations
Temporal variation of demographic characteristics for animal populations is of interest to both ecologists and biological modelers. The standard deviation of a series of estimated parameter values (e.g., estimated population size) or some function thereof (e.g., log of the estimated parameters) is commonly used as a measure of temporal variability. These measures of temporal variation...
Authors
William R. Gould, James D. Nichols
Water-quality data and methods of analysis for samples collected near a plume of sewage-contaminated ground water, Ashumet Valley, Cape Cod, Massachusetts, 1993-94 Water-quality data and methods of analysis for samples collected near a plume of sewage-contaminated ground water, Ashumet Valley, Cape Cod, Massachusetts, 1993-94
No abstract available.
Authors
Jennifer G. Savoie, Denis R. LeBlanc
Digital and preliminary bedrock geologic map of the Mount Carmel quadrangle, Vermont Digital and preliminary bedrock geologic map of the Mount Carmel quadrangle, Vermont
No abstract available.
Authors
Nicholas M. Ratcliffe, Gregory J. Walsh
Effect of restrictive harvest regulations on survival and recovery rates of American black ducks Effect of restrictive harvest regulations on survival and recovery rates of American black ducks
Population management of waterfowl requires an understanding of the effects of changes in hunting regulations on harvest and survival rates. Mean survival and recovery rates of American black ducks (Anas rubripes) were estimated during 3 periods of increasingly restrictive harvest regulations: 1950-66, 1967-82, and 1983-93. From the first to the second period, direct recovery rates...
Authors
Charles M. Francis, John R. Sauer, Jerome R. Serie
Digital bedrock geologic map of the Mount Carmel 7.5 x 15 minute quadrangle, Vermont Digital bedrock geologic map of the Mount Carmel 7.5 x 15 minute quadrangle, Vermont
No abstract available.
Authors
Nicholas M. Ratcliffe, Gregory J. Walsh
Evaluation of geophysical logs, phase I, for Crossley Farms Superfund Site, Berks County, Pennsylvania Evaluation of geophysical logs, phase I, for Crossley Farms Superfund Site, Berks County, Pennsylvania
Twenty-one wells were drilled at Crossley Farms Superfund Site between December 15, 1987, and May 1, 1988, to define and monitor the horizontal and vertical distribution of ground-water contamination emanating from a suspected contaminant source area (Blackhead Hill). Eight well clusters were drilled on or near the Crossley Site and three well clusters were drilled at locations...
Authors
Randall W. Conger
Toxicity of sediment collected upriver and downriver of major cities along the Lower Mississippi River Toxicity of sediment collected upriver and downriver of major cities along the Lower Mississippi River
The Lower Mississippi River contributes significantly to the biodiversity and ecological stability of the alluvial valley, but agricultural, industrial, and municipal developments have historically impacted environmental quality of the river. Toxicity of sediment and sediment pore water was used to assess the current effects of major cities on sediment quality along the Lower Mississippi...
Authors
P. V. Winger, P. J. Lasier
The Chesapeake Bay bolide impact: a new view of coastal plain evolution The Chesapeake Bay bolide impact: a new view of coastal plain evolution
A spectacular geological event took place on the Atlantic margin of North America about 35 million years ago in the late part of the Eocene Epoch. Sea level was unusually high everywhere on Earth, and the ancient shoreline of the Virginia region was somewhere in the vicinity of where Richmond is today (fig. 1). Tropical rain forests covered the slopes of the Appalachians. To the east of...
Authors
C. Wylie Poag