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: 3610
Attachment method for radio transmitters on mallard ducklings
No abstract available.
Authors
D.L. Orthmeyer
Seed germination and life history syndromes in the California chaparral
Syndromes are life history responses that are correlated to environmental regimes and are shared by a group of species (Stebbins, 1974). In the California chaparral there are two syndromes contrasted by the timing of seedling recruitment relative to wildfires. One syndrome, here called the fire-recruiter or refractory seed syndrome, includes species (both resprouting and non-resprouting) which sha
Authors
J. E. Keeley
Density Cycles in an Island Population of Deer Mice, Peromyscus maniculatus (Wagner)
No abstract available.
Authors
Charles A. Drost, Gary M. Fellers
Catastrophes and conservation: Lessons from sea otters and the Exxon Valdez
No abstract available.
Authors
J. A. Estes
SER-91 Standards and monitoring symposium: Progress in wetlands
Concern about the quality of mitigation wetlands has led to the development of a number of new systems for setting standards and evaluating the results fo wetland restoration projects.
Authors
William L. Halvorson
Mammal mortality at Arizona, California, and Nevada gold mines using cyanide extraction
No abstract available.
Authors
D. R. Clark, R. L. Hothem
Male sex steroids and hormonal control of male courtship behavior in the yellow-bellied slider turtle, Trachemys scripta
Survey of androgens and estrogens in serum, liver and testes of male yellow-bellied slider turtles, Trachemys (= Pseudemys) scripta, a species exhibiting dissociated gametogenesis age-dependent melanism, revealed the presence of numerous androgen precursors, androgens, androgen metabolites, and estrogens in quantities varying with season, tissue, and male coloration.The most commonly found and abu
Authors
W.R. Garstka, W.E. Cooper, K.W. Wasmund, J.E. Lovich
First record of Mozambique tilapia in the San Joaquin Valley, California
No abstract available.
Authors
T. Heyne, B. Tribbey, M.L. Brooks, J. Smith
Effect of experience with pine (Pituophis melanoleucus) and king (Lampropeltis getulus) snake odors on Y-maze behavior of pine snake hatchlings
The abilities of hatchling pine snakes (Pituophis melanoleucus) and king snakes (Lampropeltis getulus) to discriminate the chemical trails of pine and king snakes was investigated inY-maze experiments. Pine snakes were housed for 17 days either with shavings impregnated with pine snake odor, king snake odor, or no odor to test for the effect of experience on choice. Both pine and king snake hatchl
Authors
J. Burger, W.I. Boarman, L. Kurzava, M. Gochfeld
Climatic control of vegetation distribution: The role of the water balance
The water balance describes climate as it is sensed by plants, as the interaction of energy and water in the environment. Discriminant analysis showed that the distribution of North American plant formations was more highly correlated with the water balance (actual evapotranspiration and deficit) than with the more traditional measures of climate (such as temperature and precipitation) used in sev
Authors
Nathan L. Stephenson
C4 acid fixation in photosynthesis of the submerged aquatic Eleocharis acicularis (L.) R. & S
Eleocharis acicularis (L.) R. & S. is a widely distributed submerged aquatic macrophyte. In southern California, it codominates shallow seasonal pools with the aquatic CAM plant Isoetes howellii Engelm. Like the latter species, E. acicularis is apparently restricted to uptake of free-CO2; bicarbonate uptake is negligible, as indicated by poor carbon fixation at pH 7 and higher oxygen evolution at
Authors
B. A. Morton, Jon E. Keeley
Bioaccumulation of selenium in birds at Kesterson Reservoir, California
This study was conducted to determine selenium (Se) concentrations in tissues of birds collected during the 1983-1985 nesting seasons at Kesterson Reservoir (an area receiving high-Se irrigation drainage water), compare them with birds from reference sites within California's Central Valley, and relate them to food-chain Se concentrations at the study sites. Within years, Se in livers of adult bir
Authors
Harry M. Ohlendorf, Roger L. Hothem, Christine M. Bunck, Katherine C. Marois