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: 3789
Phenotypic variation of the Mexican duck (Anas platyrhynchos diazi) in Mexico Phenotypic variation of the Mexican duck (Anas platyrhynchos diazi) in Mexico
A collection of 98 breeding Mexican Ducks (Anas platyrhynchos diazi) was made in Mexico from six areas between the United States border with Chihuahua and Lake Chapala, Jalisco, in order to study geographic variation. Plumage indices showed a relatively smooth clinal change from north to south; northern populations were most influenced by the Northern Mallard (A. p. platyrhynchos)...
Authors
N.J. Scott, R.P. Reynolds
Factors affecting germination of chaparral seeds Factors affecting germination of chaparral seeds
No abstract available.
Authors
Jon E. Keeley
Proper expression of metabolizable energy in avian energetics Proper expression of metabolizable energy in avian energetics
We review metabolizable energy (ME) concepts and present evidence suggesting that the form of ME used for analyses of avian energetics can affect interpretation of results. Apparent ME (AME) is the most widely used measure of food energy available to birds. True ME (TME) differs from AME in recognizing fecal and urinary energy of nonfood origin as metabolized energy. Only AME values...
Authors
M. R. Miller, K. J. Reinecke
Pima County water hyacinth pilot treatment plant; a preliminary assessment for Pima County Wastewater Management Department. Task 1 Report Pima County water hyacinth pilot treatment plant; a preliminary assessment for Pima County Wastewater Management Department. Task 1 Report
No abstract available at this time
Authors
P. Warshall, M. Jennings, B. Cunningham
The status of the spotted turtle at Cedar Bog The status of the spotted turtle at Cedar Bog
No abstract available at this time
Authors
J.E. Lovich
Trimorphodon tau Trimorphodon tau
No abstract available at this time
Authors
N.J. Scott, R.W. McDiarmid
Simulated effects of transplant removal from the River Mountains bighorn herd II Simulated effects of transplant removal from the River Mountains bighorn herd II
No abstract available at this time
Authors
C. L. Douglas, D.M. Leslie
Trimorphodon biscutatus Trimorphodon biscutatus
No abstract available at this time
Authors
N.J. Scott, R.W. McDiarmid
The significance of flocking in wintering shorebirds: avoidance of predation The significance of flocking in wintering shorebirds: avoidance of predation
No abstract available at this time
Authors
B.E. Kus
Antelope Coal Company vegetation monitoring program: reclaimed area studies Antelope Coal Company vegetation monitoring program: reclaimed area studies
No abstract available at this time
Authors
K. McEachern
Crassulacean acid metabolism in Isoetes bolanderi in high elevation oligotrophic lakes Crassulacean acid metabolism in Isoetes bolanderi in high elevation oligotrophic lakes
Isoetes bolanderi dominates the littoral flora of Siesta (elevation 2,440 m) and Ellery (2,905 m) lakes in the Sierra Nevada Range of California, USA. Both lakes are sparsely vegetated and I. bolanderi maintained aboveground oven dry weight of 30–50 m−22 through most of the 1981 summer growing season. Plants at the higher elevation Ellery Lake were half as large as plants at Siesta Lake...
Authors
Jon E. Keeley, C.M. Walker, R.P. Mathews