Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16783
Winter bird-population study: 16. Damp deciduous scrub with standing dead trees
No abstract available.
Authors
C.S. Robbins
Ecology of a nesting red-shouldered hawk population
An ecological study of a nesting Red-shouldered Hawk population was made over a 185 square mile area on the Coastal Plain of Maryland in 1947. The courting and nesting season extended from late February until late June.....During the nesting season a combination of fairly extensive flood-plain forest with adjacent clearings appears to meet the major ecological requirements of the Red-shouldered Ha
Authors
R. E. Stewart
Wilson's warbler in Maryland in late December
On December 22, 1947, while participating in a Christmas Bird Count on the eastern shore of Maryland, I observed a Wilson's warbler (Wilsonia pusilla) feeding along a sunny margin of a woods near the Pocomoke River, three miles north of Snow Hill. It was with a flock of myrtle warblers (Dendroica coronata), white-throated sparrows (Zonotrichia albicollis), Carolina chickadees (Parus carolinensis),
Authors
C.S. Robbins
A Sigmodon and Baiomys population in ungrazed and unburned Texas prairie
Summary: A 6.1-acre rectangle in ungrazed and unburned tall-grass prairie at Camp Bullis, Bexar County, Texas, was live-trapped from August 4 through 12, 1947. The home range of SIgmodon hispidus in this habitat was less than 100 feet in diameter for females, and less than 200 feet for males. Greater travels were recorded only for two males. The home range of Baiomys taylori was less than 10
Authors
L. F. Stickel, W. H. Stickel
Populations and home range relationships of the box turtle, Terrapene carolina (Linnaeus)
A population study of Terrapene carolina (Linnaeus) was made at the Patuxent Research Refuge, Maryland, from 1944 to 1947. A thirty acre area in bottomland forest was selected for intensive study. Turtles were marked by filing notches in marginal scutes according to a code. Turtles make extensive use of brushy shelter during the day as well.as at night. Gully banks and woods openi
Authors
L. F. Stickel
Wildlife effects of DDT dust used for tick control on a Texas prairie
The effect of DDT dust on wildlife was studied at Camp Bullis, Bexar County, Texas, in the summer of 1947. Studies were made on a 206.6 acre plot that was treated with DDT for experimental control of the Lone Star tick (Amblyomma americanum). A dust consisting of one part of DDT to nine parts of pyrophyllite was applied at an average rate of 4.4 pounds of DDT per acre. The limits of DDT concentrat
Authors
J.L. George, William H. Stickel
Control of aquatic plants in ponds and lakes
No abstract available at this time
Authors
E. W. Surber
The catches of fish in two smallmouth bass streams in West Virginia
No abstract available at this time
Authors
E. W. Surber, E.A. Seaman
Prophylaxis of furunculosis in brook trout (Salvelinus fontinalis) by oral immunization and sulfamerazine
No abstract available.
Authors
S. F. Snieszko, S.B. Friddle
Effects of an aerial application of DDT on fish and fish-food organisms in two Pennsylvania watersheds
No abstract available.
Authors
C.H. Hoffmann, E. W. Surber