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
Additional records of reptiles from Jalisco, Mexico Additional records of reptiles from Jalisco, Mexico
No abstract available.
Authors
P.A. Medica, R.G. Arndt
An evaluation of attempts to reestablish sea otters in Oregon An evaluation of attempts to reestablish sea otters in Oregon
No abstract available at this time
Authors
R.J. Jameson
Rhinocheilus generic, and Rhinocheilus lecontei species accounts Rhinocheilus generic, and Rhinocheilus lecontei species accounts
No abstract available at this time
Authors
P.A. Medica
Productivity and flowering of winter ephemerals in relation to Sonoran Desert shrubs Productivity and flowering of winter ephemerals in relation to Sonoran Desert shrubs
Ephemeral plant biomass and density on a Sonoran Desert hill near Cave Creek, Arizona, vary relative to shrub canopy type and shrub density. Higher shrub density associated with increased elevation appears to decrease both ephemeral biomass productivity and density, while ephemeral growth is enhanced under a shrub canopy if it is not too dense or low-hanging. Phenology of ephemerals on...
Authors
William L. Halvorson, Duncan T. Patten
A preliminary census of desert bighorn sheep in Organ Pipe National Monument A preliminary census of desert bighorn sheep in Organ Pipe National Monument
No abstract available at this time
Authors
C. L. Douglas
Growth responses of Spartina patens and Spartina alterniflora by means of a two dimensional factorial design Growth responses of Spartina patens and Spartina alterniflora by means of a two dimensional factorial design
Growth of Spartina patens and Spartina alterniflora was compared under identical greenhouse conditions. Mature plants were grown in quartz sand and watered with the following solutions: (1) full Hoagland's solution; (2) Hoagland's minus iron; (3) Hoagland's minus nitrogen; (4) Hoagland's with NaCl added to 28 o/oo; (5) sea water of 28 o/oo. S. patens showed improved growth in Hoagland's...
Authors
W. L. Halvorson, A. C. Singer
Studies of reptiles in Rock Valley Studies of reptiles in Rock Valley
No abstract available at this time
Authors
P.A. Medica, D.D. Smith
Digestive capabilities, gut morphology, and cecal fermentation in wild waterfowl (genus Anas) fed various diets Digestive capabilities, gut morphology, and cecal fermentation in wild waterfowl (genus Anas) fed various diets
No abstract available at this time
Authors
M. R. Miller
Seasonal water potential changes in Sonoran Desert shrubs in relation to topography Seasonal water potential changes in Sonoran Desert shrubs in relation to topography
Water potential in Sonoran Desert shrubs was recorded from September 1968 through September 1969. Special attention was paid to recording maximum and minimum potentials on a seasonal basis and diurnal fluctuations during the wettest and driest periods of the year. Franseria deltoidea developed the lowest potential (—85 bar) of the shrubs recorded and also showed the greatest degree of...
Authors
William L. Halvorson, Duncan T. Patten
Swans resting on the surface of a dry lake Swans resting on the surface of a dry lake
No abstract available.
Authors
D.S. Gilmer
Geographic distribution: Eumeces gilberti arizonensis Geographic distribution: Eumeces gilberti arizonensis
No abstract available.
Authors
P.A. Medica, L.J. Vitt
Aging tricolored blackbirds by cranial ossification Aging tricolored blackbirds by cranial ossification
No abstract available.
Authors
R. W. DeHaven, F.T. Crase, M. R. Miller