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
Predation on Corynorhinus townsendii by Rattus rattus Predation on Corynorhinus townsendii by Rattus rattus
Corynorhinus townsendii (Townsend's big- eared bat) is a rare and declining species. Ex- tensive surveys for the coastal subspecies, C. t. townsendii, in California indicate that only 50% of historic maternity colonies are occu- pied currently (Pierson and Rainey, 1996). Three of the largest maternity colonies occur in Marin Co. Two of these have been moni- tored with evening exit counts...
Authors
Gary M. Fellers
A Pacific spring migration route and breeding range expansion for greater white-fronted geese wintering in Japan A Pacific spring migration route and breeding range expansion for greater white-fronted geese wintering in Japan
No abstract available.
Authors
John Y. Takekawa, Masayuki Kurechi, Dennis L. Orthmeyer, Yutaka Sabano, Sachiko Uemura, William M. Perry, Julie L. Yee
Estimated ages of some large giant sequoias: General Sherman keeps getting younger Estimated ages of some large giant sequoias: General Sherman keeps getting younger
During 1975-77, 168 bald eagles (Haliaeetus leucocephalus) found moribund or dead in 29 states were analyzed for organochlorine pesticides and polychlorinated biphenyls (PCBs); 32 specimens from 13 states were analyzed for polybrominated biphenyls (PBBs). PCBs were present in 166 bald eagle carcasses and DDE was found in 165. TDE and dieldrin were identified in 137 samples, trans...
Authors
N.L. Stephenson
Composition of Pteryxia terebinthina var. californica (Coult. and Rose) Mathias essential oils Composition of Pteryxia terebinthina var. californica (Coult. and Rose) Mathias essential oils
β-Pinene (35.0%, 53.8%) was the major component of both the aerial parts and the root oils of Pteryxia terebinthina var. californica, respectively. β-Phellandrene (12.2%) was the other most abundant component of the oil from aeial parts while δ-3-carene (14.2%) was the second abundant component of the root oil.
Authors
Philip E. Beauchamp, Vasu Dev, Elsa Munevar-Mendoza, Peggy E. Moore
Competition between alien annual grasses and native annual plants in the Mojave Desert Competition between alien annual grasses and native annual plants in the Mojave Desert
Alien annual grasses in the genera Bromus and Schismus are widespread and abundant in the Mojave Desert, and negative correlations between these aliens and native annual plants suggest that competition may occur between them. Effects of competition were evaluated by thinning alien annual grass seedlings and measuring the responses of native annual plants at three sites in the central...
Authors
Matthew L. Brooks
Contaminants in eggs of western snowy plovers and California least terns: Is there a link to population decline? Contaminants in eggs of western snowy plovers and California least terns: Is there a link to population decline?
No abstract available.
Authors
R.L. Hothern, A.N. Powell
Pilgrim Creek Restoration Project: Bird Community and Vegetation Structure Pilgrim Creek Restoration Project: Bird Community and Vegetation Structure
No abstract available at this time
Authors
B.E. Kus, P.P. Beck, B. Peterson
Distribution, Abundance, and Breeding Activities of the Southwestern Willow Flycatcher at Marine Corps Base Camp Pendleton, California in 2000 Distribution, Abundance, and Breeding Activities of the Southwestern Willow Flycatcher at Marine Corps Base Camp Pendleton, California in 2000
No abstract available at this time
Authors
B.E. Kus
A study plan to inventory vascular plants and vertebrates: Sonoran Desert Network, National Park Service A study plan to inventory vascular plants and vertebrates: Sonoran Desert Network, National Park Service
No abstract available at this time
Authors
K. Davis, W. L. Halvorson
Development and Implementation of an Alien Plant Control Strategy for Channel Islands National Park. Technical report Development and Implementation of an Alien Plant Control Strategy for Channel Islands National Park. Technical report
No abstract available at this time
Authors
S. Chaney, K. McEachern
Population dynamics of tule elk at Point Reyes National Seashore, California Population dynamics of tule elk at Point Reyes National Seashore, California
No abstract available at this time
Authors
J. A. Howell, G. C. Brooks, M. Semenoff-Irving