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
Decomposed gosling feet provide evidence of insecticide exposure Decomposed gosling feet provide evidence of insecticide exposure
Canada goose goslings were exposed to turf sprayed with D · Z · N® diazinon 50W application (2.24 kg a.i./ha). The control plot was subjected to a water application. One foot from each bird was placed outdoors for 7 d to decompose and the other foot was kept frozen. Diazinon residues were analyzed on both feet. Results showed that diazinon was detected from undecomposed and decomposed...
Authors
N.B. Vyas, J. W. Spann, C.S. Hulse, M. Torrez, B.I. Williams, R. Leffel
Contaminant exposure and effects in Red-Winged Blackbirds inhabiting stormwater retention ponds Contaminant exposure and effects in Red-Winged Blackbirds inhabiting stormwater retention ponds
Stormwater wetlands are created to retain water from storms and snow melt to reduce sediment, nutrient, and contaminant pollution of natural waterways in metropolitan areas. However, they are often a source of attractive habitat to wetland-associated wildlife. In this study of 12 stormwater wetlands and a larger, older reference site, elevated concentrations of zinc and copper were found...
Authors
D. W. Sparling, J.D. Eisemann, Wayne J. Kuenzel
Costs of detection bias in index-based population monitoring Costs of detection bias in index-based population monitoring
Managers of wildlife populations commonly rely on indirect, count-based measures of the population in making decisions regarding conservation, harvest, or control. The main appeal in the use of such counts is their low material expense compared to methods that directly measure the population. However, their correct use rests on the rarely-tested but often-assumed premise that they...
Authors
C. T. Moore, W. L. Kendall
Effectiveness of a confinement strategy for reducing campsite impacts in Shenandoah National Park Effectiveness of a confinement strategy for reducing campsite impacts in Shenandoah National Park
The expansion and proliferation of backcountry campsites is a persistent problem in many parks and protected areas. Shenandoah National Park (SNP) has one of the highest backcountry overnight use densities in the USA national parks system. SNP managers implemented a multi-option backcountry camping policy in 2000 that included camping containment with established campsites. These actions...
Authors
S. E. Reid, J. L. Marion
On the relationships of 'Marmosa' formosa Shamel, 1930 (Marsupialia: Didelphidae), a phylogenetic puzzle from the Chaco of northern Argentina On the relationships of 'Marmosa' formosa Shamel, 1930 (Marsupialia: Didelphidae), a phylogenetic puzzle from the Chaco of northern Argentina
The holotype and only known specimen of Marmosa formosa Shamel, a nominal species currently synonymized with Gracilinanus agilis Burmeister, is strikingly unlike any other known didelphid marsupial. Phylogenetic analyses based on nonmolecular characters and IRBP sequences suggest that formosa is either the sister-taxon of Thylamys (including Lestodelphys) or Monodelphis. Because neither
Authors
Robert S. Voss, Afred L. Gardner, Sharon A. Jansa
Biological control of ticks Biological control of ticks
Ticks have numerous natural enemies, but only a few species have been evaluated as tick biocontrol agents (BCAs). Some laboratory results suggest that several bacteria are pathogenic to ticks, but their mode of action and their potential value as biocontrol agents remain to be determined. The most promising entomopathogenic fungi appear to be Metarhizium anisopliae and Beauveria bassiana
Authors
M. Samish, H. Ginsberg, I. Glazer
Environmentally sustainable trail management Environmentally sustainable trail management
No abstract available.
Authors
J. L. Marion, Y.-F. Leung
A hierarchical spatial model of avian abundance with application to Cerulean Warblers A hierarchical spatial model of avian abundance with application to Cerulean Warblers
Surveys collecting count data are the primary means by which abundance is indexed for birds. These counts are confounded, however, by nuisance effects including observer effects and spatial correlation between counts. Current methods poorly accommodate both observer and spatial effects because modeling these spatially autocorrelated counts within a hierarchical framework is not practical...
Authors
Wayne E. Thogmartin, John R. Sauer, Melinda G. Knutson
Modeling interpopulation dispersal by banner-tailed kangaroo rats Modeling interpopulation dispersal by banner-tailed kangaroo rats
Many metapopulation models assume rules of population connectivity that are implicitly based on what we know about within-population dispersal, but especially for vertebrates, few data exist to assess whether interpopulation dispersal is just within-population dispersal "scaled up." We extended existing multi-stratum mark-release-recapture models to incorporate the robust design...
Authors
J.L. Skvarla, J.D. Nichols, J.E. Hines, P.M. Waser
Atlantic Flyway review: Region IV - Fall 2003 Atlantic Flyway review: Region IV - Fall 2003
We welcome the Eden Mill station in northeastern Maryland to Region IV this year. With three stations reporting their worst year ever, we really need to be refreshed. After a cool and wet July, August was hot and wet in the east. Temperatures in September remained close to normal, but thanks to tropical storms Henri (6-8 Sep) and Isabel (18 Sep), rainfall was excessive in the Chesapeake...
Authors
Chandler S. Robbins