Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16785
Foraging decisions, patch use, and seasonality in egrets (Aves: ciconiiformes)
Feeding Snowy (Egretta thula) and Great (Casmerodius albus) egrets were observed during two breeding seasons in coastal New Jersey and two brief winter periods in northeast Florida. A number of tests based on assumptions of foraging models, predictions from foraging theory, and earlier empirical tests concerning time allocation and movement in foraging patches was made. Few of the expectations bas
Authors
R. Michael Erwin
Chemical investigations of wolf (Canis lupus) anal-sac secretion in relation to breeding season
The volatile constituents of wolf anal-sac secretions were examined via capillary gas chromatography and compared among intact males, females, castrate males, ovariectomized females, and anosmic and pinealectomized males and females. Some chemical compounds were deemed significantly different (t test, 95% confidence level) among the groups both during and outside of the mating season, implying tha
Authors
J. Raymer, D. Wiesler, M. Novotny, C. Asa, U. S. Seal, L. D. Mech
The capitate-flowered epiphytic Spiranthinae (Orchidaceae) and a new genus from Paraguay
The Eurystyles Alliance is reviewed with regard to column characters, and a new genus, Synanthes, is described. Three genera, Eurystyles, Pseudoeurystyles, and Synanthes, compose the alliance of capitate-flowerd epiphytic Spiranthinae.
Authors
P. Burns-Balogh, H. Robinson, Mercedes S. Foster
Metals in riparian wildlife of the lead mining district of southeastern Missouri
Five species of riparian vertebrates (425 individuals) primarily representing upper trophic levels were collected from the Big River and Black River drainages in two lead mining districts of southeastern Missouri, 1981–82. Big River is subject to metal pollution via erosion and seepage from large tailings piles from inactive lead mines. Black River drains part of a currently mined area. Bullfrogs
Authors
K. R. Niethammer, Richard D. Atkinson, Thomas S. Baskett, Fred B. Samson
Book Review: The microscopic pond
People have been fascinated by the variety of life in a drop of water since microscopes were invented.
Authors
Terry T. Terrell
Aspects of the biogeochemistry of Big Soda Lake, Nevada
No abstract available.
Authors
Ronald S. Oremland, R. L. Smith, Charles W. Culbertson
National water summary 1984: Hydrologic events, selected water-quality trends, and ground-water resources
Water year 1984 was a year of extreme hydrologic conditions. For the third consecutive year, precipitation and resulting runoff were well above long-term averages in most of the Nation and as much as 400 percent above average in the Southwest. National flood damages during the year were the third highest in a 10-year period (1975-84) an estimated $3.5 to $4 billion. In many of the larger river sys
Authors
By
Water Resources Mission Area, Oklahoma-Texas Water Science Center, Kansas Water Science Center, Pennsylvania Water Science Center, Utah Water Science Center, Dakota Water Science Center, Central Midwest Water Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center
Ground-water levels in the Lower Paleozoic carbonate rocks of Western Chester Valley, Chester County, Pennsylvania, November 1984
No abstract available
Authors
Charles R. Wood
Ground-water levels in the Cockeysville marble of southern Chester County, Pennsylvania, 1983-84
No abstract available
Authors
Deloris W. Speight
Significance of tourmaline-rich rocks in the Grenville Complex of St. Lawrence County, New York
Feldspathic quartzite and metapelite of Middle Proterozic age north of Gouverneur, N.Y., contain abundant dravite-uvite (magnesian tourmaline). These rocks, more than 1,000 feet thick, are regionally metamorphosed to the upper amphibolite facies, are pyritic, and locally contain porphyroblastic scapolite. The rocks are underlain by talctremolite schist and a thick sequence of calcitic and dolomiti
Authors
C. Ervin Brown, Robert A. Ayuso
Geological and geochemical data for seamounts and associated ferromanganese crusts in and near the Hawaiian, Johnston Island, and Palmyra Island Exclusive Economic Zone
No abstract available.
Authors
J. R. Hein, F. T. Manheim, W. C. Schwab, A. S. Davis, C.L. Daniel, R. M. Bouse, L.A. Morgenson, R.E. Sliney, David Clague, G. B. Tate, D. A. Cacchione
Mineral supplementation of Atlantic salmon broodstock diets
No abstract available at this time
Authors
H. G. Ketola