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
Managing designated campsites: Survey implications from Great Smoky Mountains National Park Managing designated campsites: Survey implications from Great Smoky Mountains National Park
No abstract available.
Authors
J. L. Marion, Y.-F. Leung
Prevalence and histopathology of shell disease in turtles from Lake Blackshear, Georgia Prevalence and histopathology of shell disease in turtles from Lake Blackshear, Georgia
Turtles in Lake Blackshear, Crisp County, Georgia (USA) were evaluated for shell disease during intensive trapping efforts on 8 and 9 May 1990. The disease was most prevalent in Pseudemys concinna (74%) and Trachemys scripta (35%). The degree of necrosis on the carapace was significantly positively correlated with the degree of necrosis on the plastron in T. scripta (rs = 0.50), but not...
Authors
J.E. Lovich, S.W. Gotte, C.H. Ernst, J. Harshbarger, A.F. Laemmerzahl
A resource conservative procedure for comparison of dose-response relationships A resource conservative procedure for comparison of dose-response relationships
The evaluation of effects of toxicants on a wildlife community can be complicated by varying responses among the community's constituent populations. Even within populations, considerable variability in dose-response relations may result from different avenues of exposure to the toxicant. Full-scale investigations of the dose-response relations among a variety of species and avenues of...
Authors
W.A. Link, E. F. Hill, J.E. Hines, P.F.P. Henry
Metal concentrations of tadpoles in experimental ponds Metal concentrations of tadpoles in experimental ponds
Anuran tadpoles are found in a variety of habitats, many of which are acidified or have high ambient concentrations of metals from anthropogenic sources. A few studies that have been conducted on metals in tadpoles demonstrate that they can contain high concentrations of some metals but have not demonstrated clear relationships between ambient conditions and metal concentrations. This...
Authors
D. W. Sparling, T. P. Lowe
Surveys of Puerto Rican screech-owl populations in large-tract and fragmented forest habitats Surveys of Puerto Rican screech-owl populations in large-tract and fragmented forest habitats
We conducted road surveys of Puerto Rican Screech-Owls (Otus nudipes) by playing conspecific vocalizations in secondary wet forest and fragmented secondary moist forest in rural areas of eastern Puerto Rico. Six paired surveys were conducted bi-weekly beginning in April. We recorded number of owl responses, cloud cover, wind speed, moon phase, and number of passing cars during 5-min...
Authors
K.L. Pardieck, J.M. Meyers, M. Pagan
Neotropical migratory breeding bird communities in riparian forests of different widths along the Altamaha River, Georgia Neotropical migratory breeding bird communities in riparian forests of different widths along the Altamaha River, Georgia
-We surveyed riparian forest corridors of different widths along the lower Altamaha River in Georgia in 1993 and 1994 to investigate the relationship between forest corridor width and Neotropical breeding bird community diversity and abundance. Species richness and abundance of three of six focal species increased with increasing forest corridor width. We suggest if Neotropical breeding...
Authors
M.F. Hodges, D.G. Krementz
Trail degradation as influenced by environmental factors: A state-of-the-knowledge review Trail degradation as influenced by environmental factors: A state-of-the-knowledge review
Excerpt: Human use and misuse of land has been causing extensive degradation of the very natural resources on which we depend. National parks, wilderness and other protected natural or semi-natural areas (referred to as natural areas hereafter) represent efforts to preserve our natural heritage from further exploitation. Such areas also provide outstanding recreational, research, and...
Authors
Y.-F. Leung, J. L. Marion
Annual survival and cause-specific mortality of white-tailed deer fawns on Mount Desert Island, Maine Annual survival and cause-specific mortality of white-tailed deer fawns on Mount Desert Island, Maine
No abstract available.
Authors
R. Long, A.F. O'Connell, D.J. Harrison
An annotated bibliography of Laysan Island, northwestern Hawaiian Islands An annotated bibliography of Laysan Island, northwestern Hawaiian Islands
No abstract available.
Authors
R. B. Clapp, M.D.F. Udvardy, A.K. Kepler
Henslow's sparrow, Ammodramus henslowii Henslow's sparrow, Ammodramus henslowii
No abstract available.
Authors
D.D. Boone, B.A. Dowell
Diurnal raptors in the fragmented rain forest of the Sierra Imataca, Venezuela Diurnal raptors in the fragmented rain forest of the Sierra Imataca, Venezuela
The rain forest of the Sierra Imataca in eastern Venezuela has been subjected to extensive deforestation for pastures and agricultural settlements. In the last decade the opening of access roads combined with intensified logging and mining activities have fragmented a significant portion of the remaining forest. We noted local distribution and habitat use for 42 species of diurnal...
Authors
E. Alvarez, D. H. Ellis, D.G. Smith, C.T. LaRue
Systematics of wolves in eastern North America Systematics of wolves in eastern North America
Cranial morphology of Recent wolves throughout northern and western North America is remarkably consistent. Statistical analysis indicates the presence of four subspecies of gray wolf (Canis lupus) there, which are always distinguishable from the sympatric coyote (C. latrans). A fifth gray wolf subspecies, lycaon, occurs in southeastern Canada, and the red wolf (C. rufus), is found in...
Authors
R. Nowak, N.E. Federoff