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: 3724
Avian furcula morphology may indicate relationships of flight requirements among birds Avian furcula morphology may indicate relationships of flight requirements among birds
This study examined furcula (wishbone) shape relative to flight requirements. The furculae from 53 museum specimens in eight orders were measured: 1) three-dimensional shape (SR) as indicated by the ratio of the direct distance between the synostosis interclavicularis and the ligamentous attachment of one of its clavicles to the actual length of the clavicle between those same two points...
Authors
Clifford Hui
Desert Tortoise (Gopherus agassizii) Desert Tortoise (Gopherus agassizii)
The desert tortoise is widely distributed throughout major portions of the Mojave and Sonoran deserts of California, Nevada, Utah, Arizona, Sonora, and Sinaloa. Genetic, morphological, ecological, and behavioral features suggest an evolutionary divergence between the tortoises found south and east of the Colorado River (“Sonoran population”), and those found north and west of the river (...
Authors
William I. Boarman
Overview and parting shots Overview and parting shots
No abstract available at this time
Authors
J.E. Lovich
A new species of Ceanothus from northern Baja California A new species of Ceanothus from northern Baja California
Ceanothus bolensis S. Boyd & J. Keeley is a new species in the subgenus Cerastes from northwestern Baja California, Mexico. It is well represented at elevations above 1000 m on Cerro Bola, a basaltic peak approximately 35 km south of the U.S./Mexican border. It is characterized by small, obovate to oblanceolate, cupped, essentially glabrous leaves with sparsely toothed margins, pale blue...
Authors
Steve Boyd, Jon E. Keeley
Bat inventory of Descanso district of Cleveland National Forest Bat inventory of Descanso district of Cleveland National Forest
No abstract available at this time
Authors
D.C. Stokes, Robert N. Fisher
Relationships between boat harbors, fish processing, organic contamination, and Steller's eiders wintering in the Eastern Aleutian Islands and Alaska Peninsula Relationships between boat harbors, fish processing, organic contamination, and Steller's eiders wintering in the Eastern Aleutian Islands and Alaska Peninsula
No abstract available at this time
Authors
Paul L. Flint, A.K. Miles
Fire History of Carlsbad Caverns National Park, New Mexico. Final Report for Carlsbad Caverns National Park Fire History of Carlsbad Caverns National Park, New Mexico. Final Report for Carlsbad Caverns National Park
No abstract available at this time
Authors
B.S. Gebow, W. L. Halvorson
Alien annual plants and wildfire in desert tortoise habitat: status, ecological effects, and management Alien annual plants and wildfire in desert tortoise habitat: status, ecological effects, and management
No abstract available.
Authors
M.L. Brooks, T. C. Esque
Parasites and marine invasions Parasites and marine invasions
Introduced marine species are a major environmental and economic problem. The rate of these biological invasions has substantially increased in recent years due to the globalization of the world's economies. The damage caused by invasive species is often a result of the higher densities and larger sizes they attain compared to where they are native. A prominent hypothesis explaining the...
Authors
M.E. Torchin, K. D. Lafferty, A. M. Kuris
Relating body condition to inorganic contaminant concentrations of diving ducks wintering in coastal California Relating body condition to inorganic contaminant concentrations of diving ducks wintering in coastal California
One egg from each of 114 red-breasted merganser (Mergus serrator) nests in 1977 and 92 nests in 1978 was collected and later analyzed for organochlorines, polybrominated biphenyls (PBBs), polychlorinated styrenes (PCSs). and metals. One egg was also collected from each of the dabbling duck nests located: Twenty-nine of these eggs were analyzed for organochlorines and metals in 1977; 10...
Authors
John Y. Takekawa, Wainwright-De La Cruz, R. L. Hothem, J. Yee