Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16785
Analysis of survival data from telemetry projects
Telemetry is an increasingly popular method for studying animal movements and habitat use. Telemetry provides a means for studying survival and causes of mortality. This paper describes some statistical techniques which can provide valid estimates of survival rates based on data from telemetry studies.
Authors
C. M. Bunck
Applications and considerations for wildlife telemetry
A review of radio telemetry; applications and considerations for wildlife telemetry.
Authors
M.R. Fuller
Improving atlas methodology
We are studying a sample of Maryland (2 %) and New Hampshire (4 %) Atlas blocks and a small sample in Maine. These three States used different sampling methods and block sizes. We compare sampling techniques, roadside with off-road coverage, our coverage with that of the volunteers, and different methods of quantifying Atlas results. The 7 1/2' (12-km) blocks used in the Maine Atlas are satis
Authors
C.S. Robbins, B.A. Dowell, J. O'Brien
Review of wintering by eared grebes in the southwestern United States
No abstract available.
Authors
R.C. Banks, R. B. Clapp
Monitoring contaminant exposure in wildlife with mixed-function oxygenases
No abstract available.
Authors
Barnett A. Rattner, D. J. Hoffman
Hepatic morphology and mixed-function oxidases of wild cotton rats: Effects of season and environmental pollution
No abstract available.
Authors
Barnett A. Rattner, D. Hoffman, E. Flickinger, D. Willigan
Fifty years of wildlife management at Patuxent Wildlife Research Center
No abstract available.
Authors
M. C. Perry
The need for experiments to understand population dynamics of American black ducks
No abstract available.
Authors
D.R. Anderson, K.P. Burnham, J. D. Nichols, M.J. Conroy
Survival of spotted salamander eggs in temporary woodland ponds of coastal Maryland
Temporary ponds on the Atlantic Coastal Plain in maryland were characterized according to water chemistry, rain input, phytoplankton, zooplankton and use by the spotted salamander Ambystoma maculatum during March-October 1983-1984. Neither the number of egg masses per unit of pond surface (abundance) nor the survival of spotted salamander embryos was significantly correlated (P>0.05) with pond pH.
Authors
P.H. Albers, R. M. Prouty
Relation of pH and other soil variables to concentrations of Pb, Cu, Zn, Cd, and Se in earthworms
Various soil treatments (clay, composted peat, superphosphate, sulfur, calcium carbonate, calcium chloride, zinc chloride, selenous acid) were added to experimental field plots to test the effect of different soil variables on the concentrations of 5 elements in earthworms (Pb, Cu, Zn, Cd, Se). Concentrations of the 5 elements were related to 9 soil variables (soil Pb, soil Cu, soil Zn, pH, organi
Authors
W. Nelson Beyer, Gary L. Hensler, Jeff Moore
Comparison of neotropical winter bird populations in isolated patches versus extensive forest
Wintering birds were captured with mist nets at 12 pairs of forested sites in the New World tropics in 1984 and 1985 to compare populations in small isolated woodlands (generally 5-50 ha) with those in extensive forests (> 1,000 ha). Net-hours of effort were similar in large and small sites, as were total birds captured and banded, but species composition was very different. Members of the Todida
Authors
C.S. Robbins, B.A. Dowell, D.K. Dawson, J. Colon, F. Espinoza, J. Rodriguez, R. Sutton, T. Vargas
Toxicity of paraquat in nestling birds: effects on plasma and tissue biochemistry in American kestrels
Beginning the day after hatching, American kestrel (Falco sparverius) nestlings were orally dosed daily for 10 days with 5 μL/g of distilled water (controls), 10 mg/kg, 25 mg/kg, or 60 mg/kg of paraquat dichloride (1,1′-dimethyl-4,4′-bipyridinium dichloride) in distilled water. Forty-four percent of the nestlings receiving 60 mg/kg died after 4 days. Plasma LDH activity and total protein concentra
Authors
Daivd J. Hoffman, J. Christian Franson, Oliver H. Pattee, Christine M. Bunck, Helen C. Murray