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
Goose migration across the Himalayas: Migratory routes and movement patterns of Bar-headed Geese Goose migration across the Himalayas: Migratory routes and movement patterns of Bar-headed Geese
No abstract available.
Authors
John Y. Takekawa, Eric C. Palm, Diann J. Prosser, Lucy Hawkes, Nyambaya Batbayar, Sivananinthaperumal Balachandran, Ze Luo, Xiangming Xiao, Scott H. Newman
Ecology of the macrophyte Podostemum ceratophyllum Michx. (Hornleaf riverweed), a widespread foundation species of eastern North American rivers Ecology of the macrophyte Podostemum ceratophyllum Michx. (Hornleaf riverweed), a widespread foundation species of eastern North American rivers
Podostemum ceratophyllum, commonly called Hornleaf Riverweed, occurs in mid-order montane and piedmont rivers of eastern North America, where the plant grows submerged and attached to rocks and stable substrates in swift, aerated water. Multiple studies, mostly conducted in the southern portions of the plant’s range, have shown that Podostemum can variously influence benthic communities...
Authors
James Wood, Mary Freeman
A model to inform management actions as a response to chytridiomycosis-associated decline A model to inform management actions as a response to chytridiomycosis-associated decline
Decision-analytic models provide forecasts of how systems of interest will respond to management. These models can be parameterized using empirical data, but sometimes require information elicited from experts. When evaluating the effects of disease in species translocation programs, expert judgment is likely to play a role because complete empirical information will rarely be available...
Authors
Sarah J. Converse, Larissa L. Bailey, Brittany A. Mosher, W. Chris Funk, Brian D. Gerber, Erin L. Muths
Assessing the influence of sustainable trail design and maintenance on soil loss Assessing the influence of sustainable trail design and maintenance on soil loss
Natural-surfaced trail systems are an important infrastructure component providing a means for accessing remote protected natural area destinations. The condition and usability of trails is a critical concern of land managers charged with providing recreational access while preserving natural conditions, and to visitors seeking high quality recreational opportunities and experiences...
Authors
Jeffrey L. Marion, Jeremy Wimpey
Territory occupancy and breeding success of Peregrine Falcons Falco peregrinus at various stages of population recovery Territory occupancy and breeding success of Peregrine Falcons Falco peregrinus at various stages of population recovery
Organochlorine pesticides disrupted reproduction and killed many raptorial birds, and contributed to population declines during the 1940s to 1970s. We sought to discern whether and to what extent territory occupancy and breeding success changed from the pesticide era to recent years in a resident population of Peregrine Falcons Falco peregrinus in southern Scotland using long-term (1964...
Authors
Michael J. McGrady, James E. Hines, Chris Rollie, George D. Smith, Elise R. Morton, Jennifer F. Moore, Richard M. Mearns, Ian Newton, Oscar E. Murillo-Garcia, Madan K. Oli
Relationships between maternal engorgement weight and the number, size, and fat content of larval Ixodes scapularis (Acari: Ixodidae) Relationships between maternal engorgement weight and the number, size, and fat content of larval Ixodes scapularis (Acari: Ixodidae)
The relationship between engorgement weight of female Ixodes scapularis Say and characteristics of offspring was studied using field-collected females fed on rabbits in the laboratory. The number of eggs laid was positively related to maternal engorgement weight in one trial, and larval size (estimated by scutal area) was positively related to maternal engorgement weight in the other...
Authors
Howard S. Ginsberg, Chong Lee, Barry Volson, Megan C. Dyer, Roger A. LeBrun
An evaluation of inorganic toxicity reference values for use in assessing hazards to American robins (Turdus migratorius) An evaluation of inorganic toxicity reference values for use in assessing hazards to American robins (Turdus migratorius)
When performing screening-level and baseline risk assessments, assessors usually compare estimated exposures of wildlife receptor species with toxicity reference values (TRVs). We modeled the exposure of American robins (Turdus migratorius) to 10 elements (As, Cd, Cr, Cu, Hg, Mn, Pb, Se, Zn, and V) in spring and early summer, a time when earthworms are the preferred prey. We calculated...
Authors
W. Nelson Beyer, Bradley E. Sample
Detecting spatial ontogenetic niche shifts in complex dendritic ecological networks Detecting spatial ontogenetic niche shifts in complex dendritic ecological networks
Ontogenetic niche shifts (ONS) are important drivers of population and community dynamics, but they can be difficult to identify for species with prolonged larval or juvenile stages, or for species that inhabit continuous habitats. Most studies of ONS focus on single transitions among discrete habitat patches at local scales. However, for species with long larval or juvenile periods...
Authors
William R. Fields, Evan H. Campbell Grant, Winsor H. Lowe
Low pathogenic avian influenza viruses in wild migratory waterfowl in a region of high poultry production, Delmarva, Maryland Low pathogenic avian influenza viruses in wild migratory waterfowl in a region of high poultry production, Delmarva, Maryland
Migratory waterfowl are natural reservoirs for low pathogenic avian influenza viruses (AIVs) and may contribute to the long-distance dispersal of these pathogens as well as spillover into domestic bird populations. Surveillance for AIVs is critical to assessing risks for potential spread of these viruses among wild and domestic bird populations. The Delmarva Peninsula on the east coast...
Authors
Diann J. Prosser, Christine L. Densmore, Larry J. Hindman, Deborah D. Iwanowicz, Christopher A. Ottinger, Luke R. Iwanowicz, Cindy P. Driscoll, Jessica L. Nagel
Current limitations and recommendations to improve testing for the environmental assessment of endocrine active substances Current limitations and recommendations to improve testing for the environmental assessment of endocrine active substances
In the present study, existing regulatory frameworks and test systems for assessing potential endocrine active chemicals are described, and associated challenges are discussed, along with proposed approaches to address these challenges. Regulatory frameworks vary somewhat across geographies, but all basically evaluate whether a chemical possesses endocrine activity and whether this...
Authors
Katherine K. Coady, Ronald C. Biever, Nancy D. Denslow, Melanie Gross, Patrick D. Guiney, Henrik Holbech, Natalie K. Karouna-Renier, Ioanna Katsiadaki, Hank Krueger, Steven L. Levine, Gerd Maack, Mike Williams, Jeffrey C. Wolf, Gerald T. Ankley
Nocturnal insect availability in bottomland hardwood forests managed for wildlife in the Mississippi Alluvial Valley Nocturnal insect availability in bottomland hardwood forests managed for wildlife in the Mississippi Alluvial Valley
Silviculture used to alter forest structure and thereby enhance wildlife habitat has been advocated for bottomland hardwood forest management on public conservation lands in the Mississippi Alluvial Valley. Although some songbirds respond positively to these management actions to attain desired forest conditions for wildlife, the response of other species, is largely unknown. Nocturnal...
Authors
Loraine P. Ketzler, Christopher Comer, Daniel J. Twedt
Recommended approaches to the scientific evaluation of ecotoxicological hazards and risks of endocrine-active substances Recommended approaches to the scientific evaluation of ecotoxicological hazards and risks of endocrine-active substances
A SETAC Pellston Workshop® “Environmental Hazard and Risk Assessment Approaches for Endocrine-Active Substances (EHRA)” was held in February 2016 in Pensacola, Florida, USA. The primary objective of the workshop was to provide advice, based on current scientific understanding, to regulators and policy makers; the aim being to make considered, informed decisions on whether to select an
Authors
Peter Matthiessen, Gerald T. Ankley, Ronald C. Biever, Poul Bjerregaard, Christopher Borgert, Kristin Brugger, Amy Blankinship, Janice Chambers, Katherine K. Coady, Lisa Constantine, ZhiChao Dang, Nancy D. Denslow, David Dreier, Steve Dungey, L. Earl Gray, Melanie Gross, Patrick D. Guiney, Markus Hecker, Henrik Holbech, Taisen Iguchi, Sarah Kadlec, Natalie K. Karouna-Renier, Ioanna Katsiadaki, Yukio Kawashima, Werner Kloas, Henry Krueger, Anu Kumar, Laurent Lagadic, Annegaaike Leopold, Steven L. Levine, Gerd Maack, Sue Marty, James P. Meador, Ellen Mihaich, Jenny Odum, Lisa Ortego, Joanne L. Parrott, Daniel Pickford, Mike Roberts, Christoph Schaefers, Tamar Schwarz, Keith Solomon, Tim Verslycke, Lennart Weltje, James R. Wheeler, Mike Williams, Jeffery C. Wolf, Kunihiko Yamazaki