Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16784
Chemical pollutants in field-collected canvasback tissues, eggs, and food materials
In 1972 studies began on the levels of environmental pollutants in canvasback tissues, eggs, and food items. The purpose of the studies were to determine if the levels of toxic chemicals found in canvasbacks were of the magnitude to cause problems affecting reproduction and survival. Overall, levels of organochlorine pesticides and PCB's were low in canvasbacks and their eggs. Some individual b
Authors
D. H. White, M. P. Dieter, R.C. Stendell
Preliminary assessment of aerial photography techniques for canvasback population analysis
Recent intensive research on the canvasback has focused attention on the need for more precise estimates of population parameters. During the 1972-75 period, various types of aerial photographing equipment were evaluated to determine the problems and potentials for employing these techniques in appraisals of canvasback populations. The equipment and procedures available for automated analysis of
Authors
R. E. Munro, D.L. Trauger
Behavioral and intellectual adaptations of selected mammalian predators to the problem of hunting large animals
No abstract available.
Authors
R.P. Peters, L. D. Mech
Comments on recent canvasback habitat trends and threats on Chesapeake Bay
During the last 22 years, the North American winter population of canvasbacks has fluctuated from 481,000 in 1955 to 179,000 in 1972. The Chesapeake Bay population has averaged 33 percent of the North American population and 64 percent of the Atlantic Flyway population. In Maryland, significant annual fluctuations have been recorded between the eastern and western shore of Chesapeake Bay. In 19
Authors
M. C. Perry
Summary of recent information regarding effects of PCBs on birds and mammals
No abstract available.
Authors
R.C. Stendell
Mortality in captive sandhill cranes at the Patuxent Wildlife Research Center, 1966-1975
No abstract available.
Authors
J. W. Carpenter, L. N. Locke, J.C. Miller
Whooping crane studies at the Patuxent Wildlife Research Center
No abstract available.
Authors
R.C. Erickson
Dominance and dominance-related behavior in the whooping crane
No abstract available.
Authors
C.B. Kepler
Distribution and abundance of non-waterfowl avifauna of the lower Columbia River Basin
No abstract available.
Authors
J. M. Scott, R.T. Reynolds
Distribution and abundance of aquatic vegetation in the upper Chesapeake Bay, 1971-1974
No abstract available.
Authors
J.A. Kerwin, R. E. Munro, W.W.A. Peterson
Nighttime tests of remote sensors for census of sandhill cranes
No abstract available.
Authors
R. E. Munro, J. C. Lewis