Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16746
Conservation of grassland birds in the western hemisphere Conservation of grassland birds in the western hemisphere
No abstract available.
Authors
P.D. Vickery, P.L. Tubaro, J.M. Cardoso da Silva, B. Peterjohn, J.R. Herkert, R.B. Cavalcanti
Demography of forest birds in Panama: How do transients affect estimates of survival rates? Demography of forest birds in Panama: How do transients affect estimates of survival rates?
Estimates of annual survival rates of neotropical birds have proven controversial. Traditionally, tropical birds were thought to have high survival rates for their size, but analyses of a multispecies assemblage from Panama by Karr et al. (1990) provided a counterexample to that view. One criticism of that study has been that the estimates were biased by transient birds captured only...
Authors
J. D. Brawn, J.R. Karr, J.D. Nichols, W.D. Robinson
Effects of contaminants on Double-crested Cormorant reproduction in Green Bay, Wisconsin, USA Effects of contaminants on Double-crested Cormorant reproduction in Green Bay, Wisconsin, USA
In 1994 and 1995, Double-crested Cormorants Phalacrocorax auritus were monitored from egg-laying through 12 days of age at Cat Island, Green Bay, Wisconsin, USA. Sample eggs at hatching were analysed for organochlorines (including total PCBs, PCB congeners, and DDE), hepatic microsomal ethoxyresorufin-O-dealkylase (EROD) activity in livers of embryos, and eggshell thickness. The number...
Authors
T. W. Custer, Christine M. Custer, K. L. Stromborg, M. J. Melancon
Analysis of survival, local and seasonal movements of the Rocky Mountain population of Sandhill Cranes Analysis of survival, local and seasonal movements of the Rocky Mountain population of Sandhill Cranes
No abstract available.
Authors
Rod C. Drewien, W. L. Kendall
Sodium cyanide hazards to fish and other wildlife from gold mining operations Sodium cyanide hazards to fish and other wildlife from gold mining operations
Highly toxic sodium cyanide (NaCN) is used increasingly by the international mining community to extract gold and other precious metals through milling of high grade ores and heap leaching of low grade ores. Of the 98 million kg cyanide (CN) consumed in North America in 1989, about 80% was used in gold mining (Knudson 1990). In Canada, more than 90% of the mined gold is extracted from...
Authors
R. Eisler, D. R. Clark, Stanley N. Wiemeyer, Charles J. Henny
Behavior: Interactions and their consequences Behavior: Interactions and their consequences
No abstract available.
Authors
K. vS Hoff, A.R. Blaustein, R.W. McDiarmid, R. Altig
Diversity: Familial and generic characterizations Diversity: Familial and generic characterizations
No abstract available.
Authors
R. Altig, R.W. McDiarmid
Body plan: Development and morphology Body plan: Development and morphology
No abstract available.
Authors
R. Altig, R.W. McDiarmid
A state-of-the-art trap for the brown treesnake A state-of-the-art trap for the brown treesnake
No abstract available.
Authors
G.H. Rodda, T. H. Fritts, C.S. Clark, S.W. Gotte, D. Chiszar
Snake species of the world: A taxonomic and geographic reference. v. 1 Snake species of the world: A taxonomic and geographic reference. v. 1
Given the absence of a current source on snake diversity and nomenclature and the expressed global need to understand better the diversity of our biota, we think that a catalogue of the world snake fauna complete with synonymies at the familial, generic, and specific levels is essential. We provide that here beginning with publication of the first volume. This compendium will facilitate
Authors
R.W. McDiarmid, J. A. Campbell, T. Toure
Hydrologic effects of the Pymatuning earthquake of September 25, 1998, in northwestern Pennsylvania Hydrologic effects of the Pymatuning earthquake of September 25, 1998, in northwestern Pennsylvania
Within hours after the Pymatuning earthquake of September 25, 1998, in northwestern Pennsylvania, local residents reported wells becoming dry, wells beginning to flow, and the formation of new springs. About 120 household-supply wells reportedly went dry within 3 months after the earthquake. About 80 of these wells were on a ridge between Jamestown and Greenville, where water-level...
Authors
Gary M. Fleeger, Daniel J. Goode, Theodore F. Buckwalter, Dennis W. Risser
Digital Data Set of 14-Digit Hydrologic Units in Indiana Digital Data Set of 14-Digit Hydrologic Units in Indiana
A hydrologic unit is an area of land that can contribute surface-water runoff to a designated outlet point. As part of an initiative to create a nationally uniform hydrologic-unit data base, the U.S. Geological Survey and the Natural Resources Conservation Service, in cooperation with the Indiana Department of Environmental Management and the Indiana Department of Natural Resources...
Authors
Krysten M. DeBroka, David A. Cohen, Robert E. Dunn, Bruce J. Nielsen