Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16740
Carbon Dioxide Control in Intensive Aquaculture: Version 2.1: User's Guide and Source Code Carbon Dioxide Control in Intensive Aquaculture: Version 2.1: User's Guide and Source Code
No abstract available at this time
Authors
B.J. Vinci, M.B. Timmons, S.T. Summerfelt, B.J. Watten
Ground-water discharge and base-flow nitrate loads of nontidal streams, and their relation to a hydrogeomorphic classification of the Chesapeake Bay watershed, middle Atlantic Coast Ground-water discharge and base-flow nitrate loads of nontidal streams, and their relation to a hydrogeomorphic classification of the Chesapeake Bay watershed, middle Atlantic Coast
Existing data on base-flow and groundwater nitrate loads were compiled and analyzed to assess the significance of groundwater discharge as a source of the nitrate load to nontidal streams of the Chesapeake Bay watershed. These estimates were then related to hydrogeomorphic settings based on lithology and physiographic province to provide insight on the areal distribution of ground-water...
Authors
L. Joseph Bachman, Bruce D. Lindsey, John W. Brakebill, David S. Powars
Fluorspar Fluorspar
The state of the fluorspar industry worldwide for 1997 is discussed. The U.S. had no reported mining of fluorspar in 1997. Reported consumption in the U.S. decreased to 490 kt. U.S. imports, mainly from China, totaled 533 kt. Exports, synthetic fluorspar production, and industry developments are also reviewed.
Authors
M. Miller
Nickel Hazards to Fish, Wildlife and Invertebrates: A Synoptic Review Nickel Hazards to Fish, Wildlife and Invertebrates: A Synoptic Review
This account is a selective review and synthesis of the technical literature on nickel and nickel salts in the environment and their effects on terrestrial plants and invertebrates, aquatic plants and animals, avian and mammalian wildlife, and other natural resources, The subtopics include nickel sources and uses; physical, chemical, and metabolic properties of nickel; nickel...
Authors
R. Eisler
Radon-222 in the ground water of Chester County, Pennsylvania Radon-222 in the ground water of Chester County, Pennsylvania
Radon-222 concentrations in ground water in 31 geologic units in Chester County, Pa., were measured in 665 samples collected from 534 wells from 1986 to 1997. Chester County is underlain by schists, gneisses, quartzites, carbonates, sandstones, shales, and other rocks of the Piedmont Physiographic Province. On average, radon concentration was measured in water from one well per 1.4...
Authors
Lisa A. Senior
Identification of water-bearing zones by the use of geophysical logs and borehole television surveys, collected February to September 1997, at the Former Naval Air Warfare Center, Warminster, Bucks County, Pennsylvania Identification of water-bearing zones by the use of geophysical logs and borehole television surveys, collected February to September 1997, at the Former Naval Air Warfare Center, Warminster, Bucks County, Pennsylvania
Between February 1997 and September 1997, 10 monitor wells were drilled near the site of the former Naval Air Warfare Center, Warminster, Bucks County, Pa., to monitor water levels and sample ground-water contaminants in the shallow, intermediate, and deep water-bearing zones. The sampling will determine the horizontal and vertical distribution of contaminated ground water migrating from...
Authors
Randall W. Conger
Wetland habitats for wildlife of the Chesapeake Bay Wetland habitats for wildlife of the Chesapeake Bay
The wetlands of Chesapeake Bay have provided the vital habitats that have sustained the impressive wildlife populations that have brought international fame to the Bay. As these wetland habitats decrease in quantity and quality we will continue to see the decline in the wildlife populations that started when European settlers first came to this continent. These declines have accelerated
Authors
Matthew C. Perry
[Book review] Natural History of the Waterfowl, by Frank S. Todd, 1996; Handbook of Waterfowl Identification, by Frank S. Todd, 1996 [Book review] Natural History of the Waterfowl, by Frank S. Todd, 1996; Handbook of Waterfowl Identification, by Frank S. Todd, 1996
No abstract available.
Authors
J. R. Longcore
Brief notes on habitat geology and clay pipe habitat on Stellwagen Bank Brief notes on habitat geology and clay pipe habitat on Stellwagen Bank
In our studies of sea floor habitats, my colleagues and I use both biological and geological approaches. We call our studies “habitat geology,” a term coined by a biologist friend of mine. We view it as the study of sea floor materials and biological and geological processes that influence where species live. Some of the factors that we consider are the following:composition of the sea...
Authors
Page C. Valentine
Water-level changes in Lake Baikal, Siberia: Tectonism versus climate Water-level changes in Lake Baikal, Siberia: Tectonism versus climate
Relative changes in the level of Lake Baikal, amounting to hundreds of meters in Quaternary time, are well documented. Data presented here show that tectonic displacements of the lake outlet or former shoreline features are entirely sufficient to explain these relative lake-level changes. In contrast, the morphology and hydrology of the lake make its level hydrologically insensitive to...
Authors
Steven M. Colman