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: 3743
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
Sea otter population surveys: Why and How Sea otter population surveys: Why and How
No abstract available.
Authors
R.J. Jameson
Comments on the proposed conservation of the specific name of Anniella pulchra Gray, 1852 and designation of a neotype (Reptilia, Squamata) Comments on the proposed conservation of the specific name of Anniella pulchra Gray, 1852 and designation of a neotype (Reptilia, Squamata)
No abstract available.
Authors
M.R. Jennings
Status of the least Bell's vireo at the West San Luis Rey River, San Diego County, California, 1992 Status of the least Bell's vireo at the West San Luis Rey River, San Diego County, California, 1992
No abstract available at this time
Authors
B.E. Kus
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
Desert tortoise population trends in Nevada 1990-1992 Desert tortoise population trends in Nevada 1990-1992
No abstract available at this time
Authors
P.A. Medica
Final report of preliminary studies on habitat requirements of the San Francisco garter snake (Thamnophis sirtalis tetrataenia) at Pescadero Marsh and Theodore J. Hoover Natural Preserves. Final report prepared for the California Department of Parks and R Final report of preliminary studies on habitat requirements of the San Francisco garter snake (Thamnophis sirtalis tetrataenia) at Pescadero Marsh and Theodore J. Hoover Natural Preserves. Final report prepared for the California Department of Parks and R
No abstract available at this time
Authors
M.R. Jennings
Commissioned Review. Carbon: freshwater plants Commissioned Review. Carbon: freshwater plants
δ13C values for freshwater aquatic plant matter varies from −11 to −50‰ and is not a clear indicator of photosynthetic pathway as in terrestrial plants. Several factors affect δ13C of aquatic plant matter. These include: (1) The δ13C signature of the source carbon has been observed to range from +1‰ for HCO3− derived from limestone to −30‰ for CO2 derived from respiration. (2) Some...
Authors
Jon E. Keeley, D.R. Sandquist
The management of amphibian and reptile populations: species priorities and methodological and theoretical constraints The management of amphibian and reptile populations: species priorities and methodological and theoretical constraints
No abstract available at this time
Authors
N.J. Scott, R.A. Seigel
Nesting behavior and movements of western pond turtles, Clemmys marmorata Nesting behavior and movements of western pond turtles, Clemmys marmorata
No abstract available.
Authors
G. B. Rathbun, N. Siepel, D. Holland
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