Publications
This is a list of publications written by Patuxent employees since Patuxent opened in 1939. To search for Patuxent's publications by author or title, please click below to go to the USGS Publication Warehouse.
Filter Total Items: 8128
Brain cholinesterase activities of birds from forests sprayed with trichlorfon (Dylox) and carbaryl (Sevin-4-oil) Brain cholinesterase activities of birds from forests sprayed with trichlorfon (Dylox) and carbaryl (Sevin-4-oil)
Brain cholinesterase activities were determined in birds from forests sprayed with Dylox2 at 1.13 kg/hectare (1 1b/acre — active ingredient [a.i.]) or Sevin-4-oil2 at 1.13 kg/hectare (1 1b/acre — a.i.) for up to 5 days postspray. Of ten bird species evaluated from the Dylox spray area, four species represented by six individuals had values which were depressed more than 2 standard...
Authors
J.G. Zinkl, Charles J. Henny, L.R. DeWeese
A comparison of 2 techniques for estimating deer density A comparison of 2 techniques for estimating deer density
We applied mark-resight and area-conversion methods to estimate deer abundance at a 2,862-ha area in and surrounding the Gettysburg National Military Park and Eisenhower National Historic Site during 1987-1991. One observer in each of 11 compartments counted marked and unmarked deer during 65-75 minutes at dusk during 3 counts in each of April and November. Use of radio-collars and vinyl...
Authors
G.L. Storm, D.F. Cottam, R.H. Yahner, J.D. Nichols
Avian haematozoa 3. Color atlas of leucocytozoon simondi Avian haematozoa 3. Color atlas of leucocytozoon simondi
The life cycle of Leucocytozoon simondi is Illustrated in a series of color photomicrographs of the various stages of development in the blackfly vector and in the tissues and blood of Anatidae. A brief discussion of the life cycle is presented and taxonomic status of the parasite is reviewed. The bibliography includes references to the stages depicted and other phases of the development
Authors
C. M. Herman, S.S. Desser, G.F. Bennett, I.B. Tarshis
Ruptured-yolk peritonitis and organochlorine residues in a royal tern Ruptured-yolk peritonitis and organochlorine residues in a royal tern
Ruptured-yolk peritonitis was responsible for the death of a royal tern. Lodgment of eggs in the oviduct was probably due to reverse peristalsis brought about by breakage of the thin-shelled eggs and secondary bacterial infection. The thin shells were apparently not related to the low levels of DDE and other organochlorine pollutants found in tissues and egg contents.
Authors
L. J. Blus, L. N. Locke, C. J. Stafford
Island biogeography and 'Habitat Islands' of eastern forest. III. Long-term turnover and effects of selective logging on the avifauna of forest fragments Island biogeography and 'Habitat Islands' of eastern forest. III. Long-term turnover and effects of selective logging on the avifauna of forest fragments
No abstract available.
Authors
B.L. Whitcomb, R.F. Whitcomb, D. Bystrak
Earthworm populations as related to woodcock habitat usage in Central Maine Earthworm populations as related to woodcock habitat usage in Central Maine
Lumbricid earthworms were sampled 'on two central Maine study areas between late April and early September, 1974, to relate earthworm abundance to use of feeding covers by American woodcock(Philoheli minor). On sampling days, occurring at 2 to 3 week intervals, a formalin solution was applied to thirty O.25m areas in heavjly, commonly, and rarely used woodcock covers (5 samples/type of
Authors
J.W. Reynolds, W.B. Krohn, G.A. Hordan
Impact of estuarine pollution on birds Impact of estuarine pollution on birds
Pollution of estuaries affects bird populations indirectly through changes in habitat and food supply. The multi-factor pollution of Chesapeake Bay has resulted in diminution of submerged aquatic plants and consequent change in food habits of the canvasback duck. Although dredge-spoil operations can improve wildlife habitat, they often result in its demise. Pollution of estuaries also...
Authors
L. J. Blus, Stanley N. Wiemeyer, J.A. Kerwin, Rey C. Stendell, H. M. Ohlendorf, L.F. Stickel
Birds of prey, DDT, and tussock moths in Pacific Northwest Birds of prey, DDT, and tussock moths in Pacific Northwest
No abstract available.
Authors
Charles J. Henny
Effects of petroleum on birds Effects of petroleum on birds
No abstract available.
Authors
Robert C. Szaro
Notes on the vertebrate fauna of Tongareva Atoll Notes on the vertebrate fauna of Tongareva Atoll
No abstract available.
Authors
R. B. Clapp