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: 3608
Distribution and abundance of manatees along the northern coast of the Gulf of Mexico
No abstract available.
Authors
J. A. Powell, G. B. Rathbun
Longevity records for lizards of the family Helodermatidae
No abstract available.
Authors
M.R. Jennings
Age-related mortality in a wintering population of dunlin
Despite considerable evidence that juvenile shorebirds experience significantly higher annual mortality rates than adults, identification and quantification of the sources of mortality have received little attention. We found that the proportion of juvenile Dunlins (Calidris alpina) in the kills of a Merlin (Falco columbarius) one winter at Bolinas Lagoon, California was greater than the proportio
Authors
B.E. Kus, P. Ashman, G. Page, L. Stenzel
Geographic distribution: Rana muscosa (mountain yellow-legged frog)
No abstract available.
Authors
M.R. Jennings
Modeling behavior of prescribed fires in Yosemite National Park
The National Fire Danger Rating System and the Fire Behavior Prediction System were tested on prescribed fires burning underneath canopies in six fuel types in Yosemite National Park, California. The mean error for rate of spread was +0.03 foot per minute for the NFDRS and -0.15 foot for the FBPS. For flame length the mean error was -0.38 foot for both systems. Regressions provided factors for cor
Authors
J. W. van Wagtendonk, S.J. Botti
Consumption of commercially-grown grapes by American robins: a field evaluation of laboratory estimates
No abstract available.
Authors
J. P. Skorupa, R. L. Hothem
Stylites, a vascular land plant without stomata absorbs CO2 via its roots
No abstract available.
Authors
J. E. Keeley, C.B. Osmond, J.A. Raven
Seed predation due to the yucca moth symbiosis
All species of Yucca (Agavaceae) require the pollinator services of a species of moth in the genus Tegeticula (Lepidoptera: Incurvariidae). These moths oviposit in the ovary of the plants and the larvae are entirely dependent upon Yucca seeds for food. The extent and distribution of larval seed predation was examined in nine Yucca species in the southwestern United States. The proportion of seeds
Authors
Jon E. Keeley, Sterling C. Keeley, C. C. Swift, J. Lee
Post-fire recovery of California coastal sage scrub
Postfire regeneration of the shrub and herb vegetation on eight coastal slopes of California coastal sage scrub was studied in the first two growing seasons after fire. All shrub species resprouted with the exception of the suffrutescent Lotus scoparius, though it is not known if this species was alive prior to the fire. It was estimated that 70% of the prefire shrub populations resprouted and the
Authors
Jon E. Keeley, Sterling C. Keeley
Phenotypic variation of the Mexican duck (Anas platyrhynchos diazi) in Mexico
A collection of 98 breeding Mexican Ducks (Anas platyrhynchos diazi) was made in Mexico from six areas between the United States border with Chihuahua and Lake Chapala, Jalisco, in order to study geographic variation. Plumage indices showed a relatively smooth clinal change from north to south; northern populations were most influenced by the Northern Mallard (A. p. platyrhynchos) phenotype. Most
Authors
N. J. Scott, R.P. Reynolds