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: 3708
Effects of desert wildfires on desert tortoise (Gopherus agassizii) and other small vertebrates Effects of desert wildfires on desert tortoise (Gopherus agassizii) and other small vertebrates
We report the results of standardized surveys to determine the effects of wildfires on desert tortoises (Gopherus agassizii) and their habitats in the northeastern Mojave Desert and northeastern Sonoran Desert. Portions of 6 burned areas (118 to 1,750 ha) were examined for signs of mortality of vertebrates. Direct effects of fire in desert habitats included animal mortality and loss of...
Authors
T. C. Esque, C.R. Schwalbe, L.A. DeFalco, R.B. Duncan, T.J. Hughes
Native American impacts on fire regimes of the California coastal ranges Native American impacts on fire regimes of the California coastal ranges
Aim Native American burning impacts on California shrubland dominated landscapes are evaluated relative to the natural lightning fire potential for affecting landscape patterns.Location Focus was on the coastal ranges of central and southern California.Methods Potential patterns of Indian burning were evaluated based upon historical documents, ethnographic accounts, archaeological...
Authors
Jon E. Keeley
Sampling methods and trapping success trends for the Mohave ground squirrel (Spermophilus mohavensis) Sampling methods and trapping success trends for the Mohave ground squirrel (Spermophilus mohavensis)
No abstract available.
Authors
M.L. Brooks, J.R. Matchett
Validation study, ERP sites 25, 37, 133, and corresponding reference sites. Biological impact of TCE and PCE on wild rodent and reptile populations, Edwards Air Force Base, California. Final report. Edwards Air Force Base, California Validation study, ERP sites 25, 37, 133, and corresponding reference sites. Biological impact of TCE and PCE on wild rodent and reptile populations, Edwards Air Force Base, California. Final report. Edwards Air Force Base, California
No abstract available at this time
Authors
S. Spring, A.K. Miles
Recovery Plan for the Pitcher's Thistle (Cirsium pitcheri) Recovery Plan for the Pitcher's Thistle (Cirsium pitcheri)
No abstract available at this time
Authors
The Mojave Desert The Mojave Desert
No abstract available at this time
Authors
C.G. Mittermeier, W.R. Konstant, R.E. Lovich, J.E. Lovich
Interspecific interactions in trematode communities Interspecific interactions in trematode communities
This chapter reviews the behavioural ecology of trematodes, focusing on intramolluscular stages. Interspecific competitive interactions, their frequency, dominance hierarchies and resolutions are discussed. Strategies employed by larval trematode species to adapt to a hostile, competitive environment, how these adaptations shape larval trematode communities, and how altered trematode...
Authors
Kevin D. Lafferty
Increasing diversity in our profession Increasing diversity in our profession
The Wildlife Society's (TWS) Ethnic and Gender Diversity Committee (previously the Minority Affairs Committee) was established in 1998 and given several charges by TWS Council. This paper responds to our original charge to consider possi- ble actions and programs that TWS might undertake to increase minority participation in the wildlife profession and TWS (R.Anthony, 13 February 1998...
Authors
Ronald D. Davis, Samuel Diswood, Annette Dominguez, Ronald W. Engel-Wilson, Keith Jefferson, A. Keith Miles, Elizabeth F. Moore, Russell Reidinger, Sherry Ruther, Raul Valdez, Kenneth Wilson, Marilet A. Zablan
Conflict of interest between a nematode and a trematode in an amphipod host: Test of the "sabotage" hypothesis Conflict of interest between a nematode and a trematode in an amphipod host: Test of the "sabotage" hypothesis
Microphallus papillorobustus is a manipulative trematode that induces strong behavioural alterations in the gamaridean amphipod Gammarus insensibilis, making the amphipod more vulnerable to predation by aquatic birds (definitive hosts). Conversely, the sympatric nematodeGammarinema gammari uses Gammarus insensibilis as a habitat and a source of nutrition. We investigated the conflict of...
Authors
Frederic Thomas, Jerome Fauchier, Kevin D. Lafferty
Polychlorinated biphenyls and toxaphene in Pacific tree frog tadpoles (Hyla regilla) from the California Sierra Nevada, USA Polychlorinated biphenyls and toxaphene in Pacific tree frog tadpoles (Hyla regilla) from the California Sierra Nevada, USA
Pacific tree frog (Hyla regilla) tadpoles were collected throughout the Sierra Nevada mountain range, California, USA, in 1996 and 1997 and analyzed for the presence of polychlorinated biphenyls (PCBs) and toxaphene. Whole-tadpole Σ PCB levels ranged from 244 ng/g (wet wt) at lower elevations on the western slope to 1.6 ng/g high on the eastern slope, whereas Σ toxaphene levels ranged...
Authors
Jeffrey E. Angermann, Gary M. Fellers, Fumio Matsumura
Western Sandpipers (Calidris mauri) during the non-breeding season: Spatial segregation on a hemispheric scale Western Sandpipers (Calidris mauri) during the non-breeding season: Spatial segregation on a hemispheric scale
The nonbreeding distribution of Western Sandpipers (Calidris mauri) was documented using 19 data sets from 13 sites along the Pacific and Atlantic coasts of the Americas. Western Sandpipers showed latitudinal segregation with regard to sex and age. Females wintered farther south than males. A “U” shaped pattern was found with respect to age, with juveniles occurring at higher proportions...
Authors
Silke Nebel, David B. Lank, Patrick D. O'Hara, Guillermo Fernandez, Ben Haase, Francisco Delgado, Felipe A. Estela, Lesley J. Evans Ogden, Brian A. Harrington, Barbara E. Kus, James E. Lyons, Francine Mercier, Brent Ortego, John Y. Takekawa, Nils Warnock, Sarah E. Warnock
Lead burdens and behavioral impairments of the lined shore crab Pachygrapsus crassipes Lead burdens and behavioral impairments of the lined shore crab Pachygrapsus crassipes
Sublethal burdens of lead impair behaviors critical to survival in a variety of animals. In a test arena, I measured refuge-seeking behaviors of adult, male, lined shore crabs from lead-free and lead-contaminated sites. The body sizes of the test groups did not differ although the mean total body lead burdens differed by over 2,300%. A lead-contaminated environment does not appear to...
Authors
Clifford A. Hui