Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16731
Metal and sediment ingestion by dabbling ducks Metal and sediment ingestion by dabbling ducks
The chemical analysis of intestinal digesta from hunter-killed carcasses or of wildlife scat is a promising means of estimating the exposure of wildlife to those environmental contaminants that, like lead, are poorly absorbed in the digestive tract. When evaluating contaminants at a site, biologists may find the results of this non-destructive approach more straightforward to interpret...
Authors
W. N. Beyer, J. Spann, D. Day
Predicting chick survival and productivity of Roseate Terns from data on early growth Predicting chick survival and productivity of Roseate Terns from data on early growth
Early growth of Roseate Tern (Sterna dougallii) chicks is a strong predictor of chick survival and hence of productivity. We developed discriminant functions to predict chick survival from body-masses measured during the first 3 days of life. Productivity is estimated by assuming that almost all A-chicks (first-hatched in each brood) survive to fledging, and using the discriminant...
Authors
C.S. Robbins
Case 3058. Arctocephalus F. Cuvier, 1826 and Callorhinus Gray, 1859 (Mammalia, Pinnipedia): Proposed conservation by the designation of Phoca pusilla Schreber, [1775] as the type species of Arctocephalus; and Otaria Peron, 1816 and Eumetopias Gill, 1866 Case 3058. Arctocephalus F. Cuvier, 1826 and Callorhinus Gray, 1859 (Mammalia, Pinnipedia): Proposed conservation by the designation of Phoca pusilla Schreber, [1775] as the type species of Arctocephalus; and Otaria Peron, 1816 and Eumetopias Gill, 1866
The purpose of this application is to conserve the accustomed understanding and usage of the fur seal name Arctocephalus F. Cuvier, 1826 by the designation of Phoca pusilia Schreber, [1775] as the type species, thus conserving also the name Callorhinus Gray, 1859. At present Phoca ursina Linnaeus, 1758 is the valid type species of both Arctocephalus and Callorhinus. The name...
Authors
A. L. Gardner, C. Brian Robbins
First specimen record of White-winged Dove (Zenaida asiatica) for Washington, DC First specimen record of White-winged Dove (Zenaida asiatica) for Washington, DC
No abstract available.
Authors
C.J. Angle, C.J. Dove
Molecular and immunogenetic analysis of major histocompatibility haplotypes in Northern Bobwhite enable direct identification of corresponding haplotypes in an endangered subspecies, the Masked Bobwhite Molecular and immunogenetic analysis of major histocompatibility haplotypes in Northern Bobwhite enable direct identification of corresponding haplotypes in an endangered subspecies, the Masked Bobwhite
The major histocompatibility complex (MHC) is a group of genetic loci coding for haplotypes that have been associated with fitness traits in mammals and birds. Such associations suggest that MHC diversity may be an indicator of overall genetic fitness of endangered or threatened species. The MHC haplotypes of a captive population of 12 families of northern bobwhites (Colinus virginianus)...
Authors
B. M. Drake, R.M. Goto, M.M. Miller, G.F. Gee, W.E. Briles
Hydrogeologic investigations by the U.S. Geological Survey at the former Fort Benjamin Harrison, Marion County, Indiana Hydrogeologic investigations by the U.S. Geological Survey at the former Fort Benjamin Harrison, Marion County, Indiana
As part of the U.S. Department of Defense Base Realignment and Closure process, the former Fort Benjamin Harrison in Marion County, Indiana (called 'Fort Harrison' in this fact sheet), was placed on the Base Closure List in 1991. Property disposal and reuse activities began when Fort Harrison was decommissioned in 1995; work continues through 1999. Fort Harrison was located on...
Authors
Martin R. Risch
Record Extension and Streamflow Statistics for the Pleasant River, Maine Record Extension and Streamflow Statistics for the Pleasant River, Maine
Historical streamflow data for the Pleasant River are limited to 11 years (from 1980 to 1991) at the U.S. Geological Survey streamgaging station near Epping. Analysis of these data in conjunction with flow data from other nearby stations indicates that the 11 years of record for the Pleasant River may not be representative of longer-term conditions in the basin. A correlation between the
Authors
Joseph P. Nielsen
Introduction: the tadpole arena Introduction: the tadpole arena
No abstract available.
Authors
R.W. McDiarmid, R. Altig
Effects of hunting on survival and habitat use by American Woodcock on breeding and migration areas Effects of hunting on survival and habitat use by American Woodcock on breeding and migration areas
No abstract available.
Authors
D.G. McAuley, J. R. Longcore, R.B. Allen, G.F. Sepik, Simon Williams, W. Palmer, J. Dunn, K. Evans
Linking stressors and ecological responses Linking stressors and ecological responses
To characterize risk, it is necessary to quantify the linkages and interactions between chemical, physical and biological stressors and endpoints in the conceptual framework for ecological risk assessment (ERA). This can present challenges in a multiple stressor analysis, and it will not always be possible to develop a quantitative stressor-response profile. This review commences with a
Authors
J.H. Gentile, K.R. Solomon, J.B. Butcher, M. Harrass, W.G. Landis, M. Power, Barnett A. Rattner, W.J. Warren-Hicks, R. Wenger
Regional analysis of population trajectories from the North American Breeding Bird Survey Regional analysis of population trajectories from the North American Breeding Bird Survey
The North American Breeding Bird Survey (BBS) was started in 1966, and provides information on population change and distribution for most of the birds in North America. The geographic extent of the survey, and the logistical compromises needed to survey such a large area, present many challenges for estimation from BBS data. In this paper, we describe the survey and discuss some of the
Authors
J.R. Sauer, W.A. Link
Digital sidescan-sonar imagery of the Manchas Interiores-Manchas Exteriores coral reef complex, Mayagüez, Puerto Rico Digital sidescan-sonar imagery of the Manchas Interiores-Manchas Exteriores coral reef complex, Mayagüez, Puerto Rico
No abstract available.
Authors
VeeAnn Cross, William C. Schwab