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: 3723
The marine snail, Cerithidea californica, matures at smaller sizes where parasitism is high The marine snail, Cerithidea californica, matures at smaller sizes where parasitism is high
I investigated life-history and parasitism in the salt marsh snail, Cerithidea californica. Latitude and growing conditions were important factors determining maturation size. After accounting for environmental variation, there was a negative association between the maturation size of snails and the prevalence of parasitic castration by larval trematodes. As predicted by life-history...
Authors
K. D. Lafferty
Reproductive characteristics of female sea otters Reproductive characteristics of female sea otters
Several important aspects of reproduction in the female sea otter, such as gestation, pupping frequency, period of pup dependency, and annual pupping rate, were unclear when this study was begun. We present data from 75 tagged adult females that indicate gestation is variable, but on average is about 6 months, the length of pup dependency is 6 mo, thus the pupping interval is usually 12...
Authors
Ronald J. Jameson, Ancel M. Johnson
Effects of fine sediment on salmonid redds in Prairie Creek, a tributary of Redwood Creek, Humboldt County, California Effects of fine sediment on salmonid redds in Prairie Creek, a tributary of Redwood Creek, Humboldt County, California
No abstract available at this time
Authors
C.B. Meyer, Mary Ann Madej, R.D. Klein
Ecology of mountain sheep reintroduced in the Sierra Nevada of California Ecology of mountain sheep reintroduced in the Sierra Nevada of California
No abstract available at this time
Authors
L.S. Chow, P.E. Moore, J. W. van Wagtendonk
A research program for predicting the effects of climatic change on the Sierra Nevada A research program for predicting the effects of climatic change on the Sierra Nevada
No abstract available at this time
Authors
N.L. Stephenson, D.J. Parsons
Forage site characteristics of reintroduced mountain sheep in the Sierra Nevada, California Forage site characteristics of reintroduced mountain sheep in the Sierra Nevada, California
No abstract available at this time
Authors
P.E. Moore
A simple morphometric method to distinguish tule and Pacific subspecies of greater white-fronted geese A simple morphometric method to distinguish tule and Pacific subspecies of greater white-fronted geese
No abstract available at this time
Authors
John Y. Takekawa, D.L. Orthmeyer
Management model for predicting fall lamb:ewe ratios in desert bighorn sheep, Canyonlands National Park, Utah Management model for predicting fall lamb:ewe ratios in desert bighorn sheep, Canyonlands National Park, Utah
No abstract available at this time
Authors
C. L. Douglas
Review of the Air Quality Biological Effects Research Program, Saguaro National Monument, Arizona Review of the Air Quality Biological Effects Research Program, Saguaro National Monument, Arizona
No abstract available at this time
Authors
W. L. Halvorson
Smoke-induced flowering in the fire-lily Cyrtanthus ventricosus Smoke-induced flowering in the fire-lily Cyrtanthus ventricosus
Flowering of certain fynbos geophytes has long been noted to have an obligate dependence upon fire. One of these species, Cyrtanthus ventricosus (Jacq.) Willd., is shown here to be stimulated to flower by smoke. Ethylene, a gaseous component of smoke, did not stimulate flowering in this species.
Authors
Jon E. Keeley
Habitat use patterns of wintering shorebirds at the San Diego Bay, California. Symposium on the Behavior, Ecology, and Conservation of Western Hemisphere Shorebirds Habitat use patterns of wintering shorebirds at the San Diego Bay, California. Symposium on the Behavior, Ecology, and Conservation of Western Hemisphere Shorebirds
No abstract available at this time
Authors
B.E. Kus