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: 3776
Home range and movements of desert tortoises (Gopherus agassizii) Home range and movements of desert tortoises (Gopherus agassizii)
No abstract available.
Authors
T. C. Esque, C. Peterson, L.A. DeFalco, C.R. Tracy
Withering syndrome is spreading Withering syndrome is spreading
No abstract available.
Authors
K. D. Lafferty, A. M. Kuris
Walking of the shore crab Pachygrapsis crassipes in its two natural environments Walking of the shore crab Pachygrapsis crassipes in its two natural environments
Video analyses of crabs walking on smooth and rocky terrains when in air and when submerged in water were conducted. Modifications of walking in the two environments, between which the animal’s weight changes sixfold, are consistent with the goals of maximizing ease of walking and minimizing risk of injury. The duty factor (fraction of step cycle in which the dactylus is in contact with...
Authors
Clifford A. Hui
Experimental evidence for the effects of polyphenolic compounds from Dictyoneurum californicum (Phaeophyta; Laminariales) on feeding rate and growth in the red abalone Haliotus rufescens Swainson Experimental evidence for the effects of polyphenolic compounds from Dictyoneurum californicum (Phaeophyta; Laminariales) on feeding rate and growth in the red abalone Haliotus rufescens Swainson
The effects of polyphenolic compounds from brown algae on grazing and growth rate of the California red abalone Haliotis rufescens Swainson were examined. Abalone consumed three phenolic-poor algal species, Laminaria sinclarii (Harvey) Farlow, Macrocystis pyrifera Agardh, and Nereocystis luetkeana Postels et Ruprecht (mean phenolic content = 0.52% dry mass), at a greater rate than two...
Authors
F.C. Winter, J. A. Estes
Selenium and other elements in freshwater fishes from the irrigated San Joaquin Valley, California Selenium and other elements in freshwater fishes from the irrigated San Joaquin Valley, California
Arsenic (As), chromium (Cr), mercury (Hg), and selenium (Se) were measured in composite whole-body samples of five fishes — bluegill (Lepomis macrochirus), common carp (Cyprinus carpio), mosquitofish (Gambusia affinis), largemouth bass (Micropterus salmoides), and Sacramento blackfish (Orthodon microlepidotus) — from the San Joaquin River system to determine if concentrations were...
Authors
M. K. Saiki, M.R. Jennings, T.W. May
Foraging on prey that are modified by parasites Foraging on prey that are modified by parasites
A model that weighs the energetic cost of parasitism for a predator against the energetic value of prey items that transmit the parasite to the predator suggests that there is often no selective pressure to avoid parasitized prey This offers an explanation for why parasites so frequently exploit predators and prey as definitive and intermediate hosts, respectively Furthermore, predators...
Authors
Kevin D. Lafferty
Range extension of the northern pygmy mouse, Baiomys taylori, in New Mexico Range extension of the northern pygmy mouse, Baiomys taylori, in New Mexico
No abstract available.
Authors
J.N. Stuart, N.J. Scott
Geographic distribution: Apalone spinifera hartwegi (western spiny softshell) Geographic distribution: Apalone spinifera hartwegi (western spiny softshell)
No abstract available.
Authors
J.N. Stuart, N.J. Scott
Does the color pattern of two species of turtles imitate duckweed? Does the color pattern of two species of turtles imitate duckweed?
No abstract available.
Authors
D.A. Ross, J.E. Lovich
Restoration and revegetation of degraded habitat as a management tool in recovery of the threatened desert tortoise. Contract Report prepared for California Dept. Parks and Recreation, Off-Highway Motor Vehicle Recreation Div Restoration and revegetation of degraded habitat as a management tool in recovery of the threatened desert tortoise. Contract Report prepared for California Dept. Parks and Recreation, Off-Highway Motor Vehicle Recreation Div
No abstract available at this time
Authors
J.E. Lovich
Alien plants at Channel Islands National Park Alien plants at Channel Islands National Park
No abstract available at this time
Authors
W. L. Halvorson
Breeding status of the least Bell's vireo at the Tijuana River, California, 1992 Breeding status of the least Bell's vireo at the Tijuana River, California, 1992
No abstract available at this time
Authors
B.E. Kus