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
Microsatellite DNA and mitochondrial DNA variation in remnant and translocated sea otter (Enhydra lutris) populations Microsatellite DNA and mitochondrial DNA variation in remnant and translocated sea otter (Enhydra lutris) populations
All existing sea otter (Enhydra lutris) populations have suffered at least 1, and in some cases 2, population bottlenecks. The 1st occurred during the 18th and 19th centuries as a result of commercial hunting that eliminated sea otters from much their native range and reduced surviving populations to small remnants. The 2nd bottleneck occurred when small numbers of otters were...
Authors
Shawn E. Larson, Ronald J. Jameson, James L. Bodkin, Michelle Staedler, Paul Bentzen
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
Of mice and mallards: Positive indirect effects of coexisting prey on waterfowl nest success Of mice and mallards: Positive indirect effects of coexisting prey on waterfowl nest success
Coexisting prey species interact indirectly via their shared predators when one prey type influences predation rates of the second prey type. In a temperate system where the predominant shared predator is a generalist, I studied the indirect effects of rodent populations on waterfowl nest success, both within the nesting season among sites and among years. Among six to ten upland fields...
Authors
Joshua T. Ackerman
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
Southwestern willow flycatcher breeding site and territory summary - 2001 Southwestern willow flycatcher breeding site and territory summary - 2001
No abstract available at this time
Authors
M. Sogge, S. Sferra, T. McCarthey, S. O Williams, B. Kus
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
Pilgrim Creek restoration project: bird community and vegetation structure. 2001 Annual Report Pilgrim Creek restoration project: bird community and vegetation structure. 2001 Annual Report
No abstract available at this time
Authors
B.E. Kus, B.L. Peterson, K. Ferree, M. Wellik
The Distribution of Giant Garter Snakes and Their Habitat in the Natomas Basin The Distribution of Giant Garter Snakes and Their Habitat in the Natomas Basin
No abstract available at this time
Authors
Glenn D. Wylie, Michael L. Casazza, Lisa L. Martin
Monitoring giant garter snakes at Colusa National Wildlife Refuge: 2001 progress report Monitoring giant garter snakes at Colusa National Wildlife Refuge: 2001 progress report
No abstract available at this time
Authors
G.D. Wylie, Michael L. Casazza, N.M. Carpenter
Herpetofauna and Small Mammal Surveys on the Marine Corps Air Gound Combat Center, Twentynine Palms, CA. March 1999-October 2001 Herpetofauna and Small Mammal Surveys on the Marine Corps Air Gound Combat Center, Twentynine Palms, CA. March 1999-October 2001
No abstract available at this time
Authors
R. Hirsch, S. Hathaway, Robert N. Fisher
Monitoring reptiles and amphibians at long-term biodiversity monitoring stations: the Puente-Chino Hills Monitoring reptiles and amphibians at long-term biodiversity monitoring stations: the Puente-Chino Hills
No abstract available at this time
Authors
C.D. Haas, R.A. Backlin, C.J. Rochester, Robert N. Fisher
Tracking Spring Migration of Northern Pintails with Satellite Telemetry. Progress Report 2002 Tracking Spring Migration of Northern Pintails with Satellite Telemetry. Progress Report 2002
No abstract available at this time
Authors
M. R. Miller, John Y. Takekawa, D.L. Orthmeyer, J. P. Fleskes, Michael L. Casazza, W.M. Perry