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: 3779
Elk-effects vegetation monitoring program for Tomales Point Elk Range, Point Reyes National Seashore, California Elk-effects vegetation monitoring program for Tomales Point Elk Range, Point Reyes National Seashore, California
The monitoring program for elk effects on Tomales Point vegetation is designed to provide information on how tule elk grazing affects plant communities and rare species. The basic objective of the program is to show whether the elk are driving the vegetation into an unacceptable state by their grazing. The expectation is that as elk numbers increase, grazing pressure will increase too...
Authors
Kathryn McEachern, Marcia Semenoff-Irving, Pamela van der Leeden
Prescribed fire as the minimum tool for wilderness forest and fire regime restoration: a case study from the Sierra Nevada, California Prescribed fire as the minimum tool for wilderness forest and fire regime restoration: a case study from the Sierra Nevada, California
No abstract available at this time
Authors
M. Keifer, N.L. Stephenson, J. Manley
Documenting trans-Himalayan migration through satellite telemetry: A report on capture, deployment, and tracking of bar-headed goose (Anser indicus) Documenting trans-Himalayan migration through satellite telemetry: A report on capture, deployment, and tracking of bar-headed goose (Anser indicus)
Animal movement and migration studies have made significant progress with the use of telemetry. Conventional radio telemetry has been used in numerous studies in different regions. However, the use of this technology is restricted to species with limited range of movement. Applying this tool for long distance migrants is usually unsatisfactory. Other challenges such as hilly terrain or...
Authors
Sàlim Javed, John Y. Takekawa, David C. Douglas, Asad R. Rahmani, Binod C. Choudhury, Steven L. Landfried, Shruti Sharma
Pepperweed: a growing threat to western wildlife habitat Pepperweed: a growing threat to western wildlife habitat
Counts on photographs and visual estimates of the numbers of territorial gulls are usually reliable indicators of the number of gull nests, but single visual estimates are not adequate to measure the number of nests in individual colonies. To properly interpret gull counts requires that several islands with known numbers of nests be photographed to establish the ratio of gulls to nests...
Authors
D.S. Gilmer
Cryptic genetic variation and paraphyly in ravens Cryptic genetic variation and paraphyly in ravens
Widespread species that are morphologically uniform may be likely to harbour cryptic genetic variation. Common ravens (Corvus corax) have an extensive range covering nearly the entire Northern Hemisphere, but show little discrete phenotypic variation. We obtained tissue samples from throughout much of this range and collected mitochondrial sequence and nuclear microsatellite data. Our...
Authors
K.E. Omland, C.L. Tarr, W.I. Boarman, J.M. Marzluff, R.C. Fleischer
Fire and exotic grasses changing Mojave's face Fire and exotic grasses changing Mojave's face
No abstract available at this time
Authors
M.L. Brooks, T. C. Esque
Book review: A natural history of the Sonoran Desert Book review: A natural history of the Sonoran Desert
Review info: A Natural History of the Sonoran Desert. Edited by S. J. Phillips and P. W. Comus. 2000. Arizona-Sonora Desert Museum Press, Tucson AZ, and University of California Press, Berkeley CA. 628 pp. Cloth ISBN 0-520-22029-3 Paper ISBN 0-520-21980-5.
Authors
Matthew L. Brooks
Population persistence in Florida torreya: Comparing modeled projections of a declining coniferous tree Population persistence in Florida torreya: Comparing modeled projections of a declining coniferous tree
The Florida torreya ( Torreya taxifolia) is a coniferous tree endemic to a 35-km stretch of bluffs and ravines along the east side of the Apalachicola River in northern Florida and southern Georgia. This formerly locally abundant tree has declined as a result of disease during the 1950s and is on the U.S. endangered species list. With no seed production in the wild, this species is...
Authors
Mark W. Schwartz, Sharon M. Hermann, Phillip J. van Mantgem
Discussion: "Erosion on logging roads in Redwood Creek, northwestern California" by Raymond M. Rice Discussion: "Erosion on logging roads in Redwood Creek, northwestern California" by Raymond M. Rice
No abstract available.
Authors
R. Klein, V. Ozaki, G. Bundros, Mary Ann Madej
The genetics of amphibian decline: population substructure and molecular differentiation in the Yosemite toad, Bufo canorus (Anura, Bufonidae) based on single-strand conformation polymorphism analysis (SSCP) and mitochondrial DNA sequence data The genetics of amphibian decline: population substructure and molecular differentiation in the Yosemite toad, Bufo canorus (Anura, Bufonidae) based on single-strand conformation polymorphism analysis (SSCP) and mitochondrial DNA sequence data
We present a comprehensive survey of genetic variation across the range of the narrowly distributed endemic Yosemite toad Bufo canorus, a declining amphibian restricted to the Sierra Nevada of California. Based on 322 bp of mitochondrial cytochrome b sequence data, we found limited support for the monophyly of B. canorus and its closely related congener B. exsul to the exclusion of the...
Authors
H. Bradley Shaffer, Gary M. Fellers, Allison Magee, S. Randal Voss
Linking biodiversity to ecosystem function: Implications for conservation ecology Linking biodiversity to ecosystem function: Implications for conservation ecology
We evaluate the empirical and theoretical support for the hypothesis that a large proportion of native species richness is required to maximize ecosystem stability and sustain function. This assessment is important for conservation strategies because sustenance of ecosystem functions has been used as an argument for the conservation of species. If ecosystem functions are sustained at...
Authors
M.W. Schwartz, C.A. Brigham, J.D. Hoeksema, K.G. Lyons, M.H. Mills, P. van Mantgem
Restoration with smoke-dependent species Restoration with smoke-dependent species
Examination of blood films from wood ducks (Aix sponsa) from several northeastern states revealed Haemoproteus, Leucocytozoon, Plasmodium and a typanosome. Haemoproteus occurred in all areas sampled and birds of the year from Massachusetts demonstrated the highest incidence during the last 2 weeks in August. Leucocytozoon was most prevalent in more northern areas. P. circumflexum and a
Authors
Jon E. Keeley, M.B. Keeley