Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16731
Production of striped bass and other North American sports fish Production of striped bass and other North American sports fish
No abstract available at this time
Authors
J.H. Kerby, C.E. Nash
Estimated withdrawals and use of freshwater in Vermont, 1990 Estimated withdrawals and use of freshwater in Vermont, 1990
Estimated freshwater withdrawals during 1990 in Vermont totaled about 632 million gallons per day. The largest withdrawals were for thermoelectric- power generation (82 percent), industrial use (7 percent), and public supply (6 percent). Most withdrawals, 587 million gallons per day, were made from surface-water sources as compared to 44.9 million gallons per day from ground-water...
Authors
M.A. Horn, Laura Medalie
Strontium Strontium
Part of the 1994 Industrial Minerals Review. The production, consumption, and applications of strontium are reviewed. Consumption for the year is estimated to have been about 35 kt for strontium contained in celestite, strontium carbonate, and strontium nitrate. Exports of strontium totaled only about 1.1 kt for the year. U.S. strontium imports and consumption increased about 30 percent...
Authors
J.A. Ober
Seasonal cycles of dissolved constituents in streamwater in two forested catchments in the mid-Atlantic region of the eastern U.S.A. Seasonal cycles of dissolved constituents in streamwater in two forested catchments in the mid-Atlantic region of the eastern U.S.A.
Streamwater discharge and chemistry of two small catchments on Catoctin Mountain in north-central Maryland have been monitored since 1982. Repetitive seasonal cycles in stream-water chemistry have been observed each year, along with seasonal cycles in the volume of stream discharge and in groundwater levels. The hypothesis that the observed streamwater chemical cycles are related to...
Authors
Karen C. Rice, Owen P. Bricker
Summer movements and behavior of an Arctic wolf, Canis lupus, pack without pups Summer movements and behavior of an Arctic wolf, Canis lupus, pack without pups
A pupless arctic Wolf pack (two adults, three yearlings) studied 5-30 July 1993 on Ellesmere Island, Northwest Territories, traveled nomadically around an area >381 km2 but the alpha pair sometimes left the yearlings at a rendezvous site. All pack members hunted Arctic hares. The alpha pair sometimes fed the yearlings, the alpha male doing so more than the alpha female.
Authors
L.D. Mech
Report from the banding lab Report from the banding lab
Mr. Tautin reported on the seemingly everchanging structure of biological science units within the Interior Department. Current Congressional proposals would either change the name of the Bird Banding Lab's parent agency or make it part of the Geological Survey. The current Congress has not looked favorably on science budgets within the Interior Department, and the Banding Lab's budget...
Authors
J. Tautin
A 24-hour remote surveillance system for terrestrial wildlife studies A 24-hour remote surveillance system for terrestrial wildlife studies
The configuration, components, specifications and costs of a state-of-the-art closed-circuit television system with wide application for wildlife research and management are described. The principal system components consist of color CCTV camera with zoom lens, pan/tilt system, infrared illuminator, heavy duty tripod, coaxial cable, coaxitron system, half-duplex equalizing video/control...
Authors
P.W. Sykes, W.E. Ryman, C. B. Kepler, J.W. Hardy
Winter range arrival and departure of white-tailed deer in northeastern Minnesota Winter range arrival and departure of white-tailed deer in northeastern Minnesota
I analyzed 364 spring and 239 fall migrations by 194 white-tailed deer (Odocoileus virginianus) from 1975 to 1993 in northeastern Minnesota to determine the proximate cause of arrivals on and departures from winter ranges. The first autumn temperatures below -7?C initiated fall migrations for 14% (95% confidence interval (CI) = 0-30) of female deer prior to snowfall in three autumns, but...
Authors
M.E. Nelson
Effects of sampling strategy, detection probability, and independence of counts on the use of point counts Effects of sampling strategy, detection probability, and independence of counts on the use of point counts
Many factors affect the use of point counts for monitoring bird populations, including sampling strategies, variation in detection rates, and independence of sample points. The most commonly used sampling plans are stratified sampling, cluster sampling, and systematic sampling. Each of these might be most useful for different objectives or field situations. Variation in detection...
Authors
G.W. Pendleton
Puerto Rican parrots Puerto Rican parrots
Since the arrival of Columbus in Puerto Rico, the Taino Indian has disappeared and the parrot has just barely survived (Wadsworth 1949; Snyder et al. 1987). The Puerto Rican parrot (Amazona vittata) had shared its habitat with the peaceful Taino Indians for centuries before the arrival of European settlers in the Caribbean.
Authors
J. Michael Meyers