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: 3780
Varied ecosystems need different fire protection Varied ecosystems need different fire protection
Covington states in his Commentary1 that the open ponderosa pine forests of the western United States are "in widespread collapse" because fire suppression by humans has eliminated the low-intensity surface fire regime that maintained the open, park-like structure of these forests. He fears this will lead to an "unprecedented" crown fire regime that will eliminate forests.
Authors
Sheri L. Gutsell, Edward A. Johnson, Kiyoko Miyanishi, Jon E. Keeley, Matthew Dickinson, Simon R. J. Bridge
Sexual segregation in Roosevelt Elk: Cropping rates and aggression in mixed sex groups Sexual segregation in Roosevelt Elk: Cropping rates and aggression in mixed sex groups
Few studies of sexual segregation in ruminants have tested widely invoked mechanisms of segregation in mixed-sex groups. In a sexually segregated population of Roosevelt elk (Cervus elaphus roosevelti), we examined if adult males had reduced intake of forage when in mixed-sex groups and if intersexual differences in aggression caused females to avoid males. Based on a mechanistic model...
Authors
Floyd F. Weckerly, Mark A. Ricca, Katherin P. Meyer
Soluble scute proteins of healthy and ill desert tortoises (Gopherus agassizii) Soluble scute proteins of healthy and ill desert tortoises (Gopherus agassizii)
No abstract available.
Authors
B.L. Homer, Chen Li, K.H. Berry, Nancy Denslow, E.R. Jacobson, R. Sawyer, E. Williams
Differences in mourning dove productivity among three time periods at Gray Lodge Wildlife Area, California Differences in mourning dove productivity among three time periods at Gray Lodge Wildlife Area, California
No abstract available.
Authors
M. R. Miller, C.L. Stemler, J.L. Yee, D.S. Blankenship
Mourning dove productivity in California during 1992-95: Was it sufficient to balance mortality? Mourning dove productivity in California during 1992-95: Was it sufficient to balance mortality?
Mourning dove (Zenaida macroura) populations have declined steadily in the western United States since 1966. We investigated the role of recruitment in this long-term problem by studying nesting ecology of mourning doves from March to September 1992-95, in the northern Central Valley, California, USA. We studied nesting doves in blue oak woodlands (Quercus douglasii), willow-cottonwood...
Authors
M. R. Miller, C.L. Stemler, S.D. Blankenship
Satellite tracking of northern pintail spring migration from California, USA: the route to Chukotka, Russia Satellite tracking of northern pintail spring migration from California, USA: the route to Chukotka, Russia
No abstract available.
Authors
M. R. Miller, J. P. Fleskes, John Y. Takekawa, D.L. Orthmeyer, Michael L. Casazza, W.M. Perry
Monitoring wildfire effects: Coming to terms with pseudoreplication Monitoring wildfire effects: Coming to terms with pseudoreplication
No abstract available.
Authors
Phillip J. van Mantgem, Mark W. Schwartz, MaryBeth Keifer
Release from parasites as natural enemies: increased performance of a globally introduced marine crab Release from parasites as natural enemies: increased performance of a globally introduced marine crab
Introduced species often seem to perform better than conspecifics in their native range. This is apparent in the high densities they may achieve or the larger individual sizes they attain. A prominent hypothesis explaining the success of introduced terrestrial species is that they are typically free of or are less affected by the natural enemies (competitors, predators, and parasites)...
Authors
Mark E. Torchin, Kevin D. Lafferty, Armand M. Kuris
Restoring fire to wilderness: Sequoia and Kings Canyon National Parks Restoring fire to wilderness: Sequoia and Kings Canyon National Parks
Sequoia and Kings Canyon National Parks, established in 1890, consist of 863,741 acres (349,551 ha) of Sierra Nevada foothills, mid-elevation conifer forest, and high-elevation alpine environment. The parks contain 36 giant sequoia (Sequoiadendron giganteum) groves, including the largest known tree, the General Sherman. Ninety-four percent of the parklands is in designated or proposed...
Authors
Jeffrey Manley, MaryBeth Keifer, Nathan L. Stephenson, William Kaage
Integration of genotoxicity and population genetic analyses in kangaroo rats (Dipodomys merriami) exposed to radionuclide contamination at the Nevada Test Site, USA Integration of genotoxicity and population genetic analyses in kangaroo rats (Dipodomys merriami) exposed to radionuclide contamination at the Nevada Test Site, USA
We examined effects of radionuclide exposure at two atomic blast sites on kangaroo rats (Dipodomys merriami) at the Nevada Test Site, Nevada, USA, using genotoxicity and population genetic analyses. We assessed chromosome damage by micronucleus and flow cytometric assays and genetic variation by randomly amplified polymorphic DNA (RAPD) and mitochondrial DNA (mtDNA) analyses. The RAPD...
Authors
Christopher W. Theodorakis, John W. Bickham, Trip Lamb, Philip A. Medica, T. Barrett Lyne
Prey: Thamnophis hammondii (Two-striped Garter Snake) Prey: Thamnophis hammondii (Two-striped Garter Snake)
Pox infection has occurrcd in mourning doves in at least 8 states on 12 separate occasions. Unsuccessful attempts were made to transmit both fowl pox (chicken isolate) and passerine pox (cowbird isolate) to mourning doves.
Authors
E.L. Ervin, Robert N. Fisher
Effect of land cover, habitat fragmentation and ant colonies on the distribution and abundance of shrews in southern California Effect of land cover, habitat fragmentation and ant colonies on the distribution and abundance of shrews in southern California
Because effects of habitat fragmentation and anthropogenic disturbance on native animals have been relatively little studied in arid areas and in insectivores, we investigated the roles of different land covers, habitat fragmentation and ant colonies on the distribution and abundance of shrews, Notiosorex crawfordi and Sorex ornatus, in southern California. Notiosorex crawfordi was the...
Authors
Juha Laakkonen, Robert N. Fisher, Ted J. Case