Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16759
Winter movements and spring migration of American woodcock along the Atlantic coast Winter movements and spring migration of American woodcock along the Atlantic coast
Radio transmitters were attached to American Woodcock (scolopax minor) at three Atlantic coastal sites to monitor winter movements and spring departure dates from Georgia (1982-1984, 1989-1991), South Carolina (1988-1989), and Virginia (1991-1992). There was no evidence of temperature, sex, or age-dependent migration dates. Migration was coincident with the full moon in February and the...
Authors
D.G. Krementz, J.T. Seginak, G.W. Pendleton
Within-site variability in surveys of wildlife populations Within-site variability in surveys of wildlife populations
Most large-scale surveys of animal populations are based on counts of individuals observed during a sampling period, which are used as indexes to the population. The variability in these indexes not only reflects variability in population sizes among sites but also variability due to the inexactness of the counts. Repeated counts at survey sites can be used to document this additional...
Authors
William A. Link, Richard J. Barker, John R. Sauer, Sam Droege
A fall land bird migration across the South China Sea from Indo-China to the Greater Sunda Islands A fall land bird migration across the South China Sea from Indo-China to the Greater Sunda Islands
We encountered 150 land birds representing 14 families along the cruise track of the Soviet Oceanographic Research Vessel AKADEMlK KOROLEV in the South China Sea. We saw most of these birds during a 3 -day period in a small area c. 350 km southeast of the southern tip of the Indo-China peninsula. These observations suggest that a significant land bird migration corridor crosses the South...
Authors
D. H. Ellis, A.K. Kepler, C. B. Kepler
Supplemental approaches to studying amphibian biodiversity: Geographic information systems. GIS and remote sensing techniques Supplemental approaches to studying amphibian biodiversity: Geographic information systems. GIS and remote sensing techniques
No abstract available.
Authors
L.C. Hayek, R.W. McDiarmid
Keys to a successful project: associated data and planning. Permits Keys to a successful project: associated data and planning. Permits
No abstract available.
Authors
R.W. McDiarmid, R.P. Reynolds, R.I. Crombie
Supplemental approaches to studying amphibian biodiversity: Group activities and field trips Supplemental approaches to studying amphibian biodiversity: Group activities and field trips
No abstract available.
Authors
R.W. McDiarmid, M.A. Donnelly
Are more North American species decreasing than increasing? Are more North American species decreasing than increasing?
Population trends for North American species are calculated for 1966-'91 and 1982-'91 using Nonh American Breeding Bird Survey data. Species are grouped into 3 systems of guild classifications representing migration status, breeding habitat and nesting substrate. Trends for these groups are summarized by time period, bioregion and physiographic region. At the continental level, declines
Authors
Sam Droege, J.R. Sauer
Organochlorine pesticides, chlorinated dioxins and furans, and PCBs in peregrine falcon Falco peregrinus eggs from the Kola peninsula, Russia Organochlorine pesticides, chlorinated dioxins and furans, and PCBs in peregrine falcon Falco peregrinus eggs from the Kola peninsula, Russia
Nesting of a bog-associated population of mlgfatory Peregrine Falcons, Falco peregrinus, along the Ponoy River depression, Kola Peninsula, Russia, has been studied since 1977. In 1987 91 production rates averaged 1.94 young per active nest and the number of breeding pairs increased from 4 to 10. In 1991, most eyrie sites were visited during the egg stage and a 'sample' egg was collected...
Authors
Charles J. Henny, S.A. Ganusevich, F.P. Ward, T.R. Schwartz
How valuable are the results of models and laboratory studies when extended to field situations? How valuable are the results of models and laboratory studies when extended to field situations?
No abstract available.
Authors
G. H. Heinz, M. Brody, L. J. Blus
Estimating the number of animals in wildlife populations Estimating the number of animals in wildlife populations
No abstract available.
Authors
R.A. Lancia, J.D. Nichols, K. H. Pollock
Biogenic silica in Lake Baikal sediments: results from 1990-1992 American cores Biogenic silica in Lake Baikal sediments: results from 1990-1992 American cores
The Lake Baikal Paleoclimate Project is a joint Russian-American program established to study the paleoclimate of Central Asia. During three summer field seasons, duplicate Russian and American cores were taken at a number of sites in different sedimentary environments in the lake. Eight cores returned to the U.S. were quantitatively analyzed for biogenic silica using a single-step 5...
Authors
Susan J. Carter, Steven M. Colman
Superchlorination and corrosivity in a municipal water supply Superchlorination and corrosivity in a municipal water supply
No abstract available.
Authors
K.A. Meyer, J.W. Bailey, D. V. Rottiers