Publications
Below is a list of WERC's peer-reviewed publications. If you are searching for a specific publication and cannot find it in this list, please contact werc_web@usgs.gov
Filter Total Items: 3724
Heat content variation of Sierra Nevada conifers Heat content variation of Sierra Nevada conifers
A study of fuels of Siena Nevada conifer species showed that percent ash content, heat content with ash, and heat content without ash of needle and duff fuels significantly varied by species, fuel component, and developmental stage of the overstory. Ash and heat contents of woody fuels varied by species and fuel component but not by developmental stage. Bark fuels significantly differed...
Authors
J. W. van Wagdendonk, W.M. Sydoriak, J.M. Benedict
A passive integrated transponder system for tracking animal movements A passive integrated transponder system for tracking animal movements
No abstract available.
Authors
W.I. Boarman, M.L. Beigel, Glenn C. Goodlett, M. Sazaki
Saltcedar invasion in desert wetlands of the southwestern United States: ecological and political implications Saltcedar invasion in desert wetlands of the southwestern United States: ecological and political implications
No abstract available at this time
Authors
J.E. Lovich, R. G. de Gouvenain
Rodent populations after a large wildfire in California chaparral and coastal sage scrub Rodent populations after a large wildfire in California chaparral and coastal sage scrub
No abstract available.
Authors
D.W. Schwilk, Jon E. Keeley
Density-dependent effects on growth, body size, and clutch size in Black Brant Density-dependent effects on growth, body size, and clutch size in Black Brant
We documented gosling size in late summer, adult body size, and clutch size of known-age Black Brant (Branta bernicla nigricans) females nesting on the Tutakoke River colony between 1986 and 1995. During this period, the colony increased from 1,100 to >5,000 nesting pairs. Gosling mass at 30 days of age declined from 764 ± SE of 13 g and 723 ± 15 g for males and females, respectively, in...
Authors
James S. Sedinger, Mark S. Lindberg, Brian T. Person, Michael W. Eichholz, Mark P. Herzog, Paul L. Flint
Bridge Creek stream channel monitoring progress report Bridge Creek stream channel monitoring progress report
No abstract available at this time
Authors
Mary Ann Madej, G. Gibbs
Gray Fox (Urocyon cinereoargenteus) ecology and management Gray Fox (Urocyon cinereoargenteus) ecology and management
The gray fox (Urocyon cinereoargenteus) is a petite member of the family Canidae in the order Carnivora with a long muzzle and pointed ears (Samuel and Nelson 1982). The coat of the gray fox is silver gray across the back with significant amounts of rufus along the sides. This characteristic is often confused by people who see the flash of red and assume that the fox is a red fox (Vulpes...
Authors
Judd A. Howell
Bobcat (Felis rufus) ecology and management Bobcat (Felis rufus) ecology and management
The bobcat (Felis rufus) is a medium sized predator in the family Felidae found exclusively in North America. Extensive natural history information is available and is summarized in several bibliographies and reviews (Sweeny and Poelker 1977, McCord and Cardoza 1982, Boddicker 1983, Anderson 1987, Rolley 1987). The bobcat is a spotted cat with a short white-tipped tail, small dark ear...
Authors
Judd A. Howell
Radiographic determination of fecundity: Is the technique safe for developing turtle embryos? Radiographic determination of fecundity: Is the technique safe for developing turtle embryos?
No abstract available.
Authors
Thomas G. Hinton, Peter D. Fledderman, Jefferey E. Lovich, Justin D. Congdon, J. Whitfield Gibbons
Convergent seed germination in South African fynbos and Californian chaparral Convergent seed germination in South African fynbos and Californian chaparral
California chaparral and South African fynbos are fire-prone communities dominated by species exhibiting remarkable similarities in germination response. In both regions there are a substantial number of species with germination stimulated chemically by charred wood and smoke. This type of germination behaviour has arisen independently in distantly related families and is interpreted as...
Authors
Jon E. Keeley, W.J. Bond
Estimating age of sea otters with cementum layers in the first premolar Estimating age of sea otters with cementum layers in the first premolar
We assessed sources of variation in the use of tooth cementum layers to determine age by comparing counts in premolar tooth sections to known ages of 20 sea otters (Enhydra lutris). Three readers examined each sample 3 times, and the 3 readings of each sample were averaged by reader to provide the mean estimated age. The mean (SE) of the known age sample was 5.2 years (1.0) and the 3...
Authors
James L. Bodkin, Jack A. Ames, Ronald J. Jameson, Ancel M. Johnson, Gary M. Matson
Trace gas emissions and smoke-induced germination Trace gas emissions and smoke-induced germination
Dormant seeds of a California chaparral annual were induced to germinate by smoke or vapors emitted from smoke-treated sand or paper. Nitrogen oxides induced 100 percent germination in a manner similar to smoke. Smoke-treated water samples inducing germination were comparable in acidity and concentration of nitrate and nitrite to nitrogen dioxide (NO2)–treated samples. Vapors from smoke...
Authors
Jon E. Keeley, C. J. Fotheringham