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: 3618
Erosion and sediment delivery following removal of forest roads
Erosion control treatments were applied to abandoned logging roads in California, with the goal of reducing road-related sediment input to streams and restoring natural hydrologic patterns on the landscape. Treatment of stream crossings involved excavating culverts and associated road fill and reshaping streambanks. A variety of techniques were applied to road benches, which included decompacting
Authors
Mary Ann Madej
Development of channel organization and roughness following sediment pulses in single‐thread, gravel bed rivers
Large, episodic inputs of coarse sediment (sediment pulses) in forested, mountain streams may result in changes in the size and arrangement of bed forms and in channel roughness. A conceptual model of channel organization delineates trajectories of response to sediment pulses for many types of gravel bed channels. Channels exhibited self‐organizing behavior to various degrees based on channel grad
Authors
Mary Ann Madej
Phylogeography of the night lizard, Xantusia henshawi, in southern California: Evolution across fault zones
No abstract available.
Authors
R.E. Lovich
Prey: Thamnophis hammondii (Two-striped Garter Snake)
Pox infection has occurrcd in mourning doves in at least 8 states on 12 separate occasions. Unsuccessful attempts were made to transmit both fowl pox (chicken isolate) and passerine pox (cowbird isolate) to mourning doves.
Authors
E.L. Ervin, Robert N. Fisher
An estimation of carrying capacity for sea otters along the California coast
Carrying capacity (K) for the California sea otter (Enhydra lutris nereis) was estimated as a product of the density of sea otters at equilibrium within a portion of their existing range and the total area of available habitat. Equilibrium densities were determined using the number of sea otters observed during spring surveys in 1994, 1995, and 1996 in each of three habitat types where sea otters
Authors
K.L. Laidre, R.J. Jameson, D.P. DeMaster
Birds at a Southern California beach: seasonality, habitat use and disturbance by human activity
Use of a Santa Barbara beach by people and birds varied in both time and space. There were 100 birds, 18 people and 2 dogs per kilometer. Bird density varied primarily with the season and tide while human activity varied most between weekend and weekday. Bird distributions along the beach were determined mainly by habitat type (particularly a lagoon and exposed rocky intertidal areas) For crows an
Authors
Kevin D. Lafferty
Effect of land cover, habitat fragmentation and ant colonies on the distribution and abundance of shrews in southern California
Because effects of habitat fragmentation and anthropogenic disturbance on native animals have been relatively little studied in arid areas and in insectivores, we investigated the roles of different land covers, habitat fragmentation and ant colonies on the distribution and abundance of shrews, Notiosorex crawfordi and Sorex ornatus, in southern California.Notiosorex crawfordi was the numerically
Authors
Juha Laakkonen, Robert N. Fisher, Ted J. Case
Pneumocystosis in wild small mammals from California
Cyst forms of the opportunistic fungal parasite Pneumocystis carinii were found in the lungs of 34% of the desert shrew, Notiosorex crawfordi (n = 59), 13% of the ornate shrew, Sorex ornatus (n = 55), 6% of the dusky-footed wood rat, Neotoma fuscipes (n = 16), 2.5% of the California meadow vole, Microtus californicus (n = 40), and 50% of the California pocket mouse, Chaetodipus californicus (n = 2
Authors
Juha Laakkonen, Robert N. Fisher, Ted J. Case
Disturbance to wintering western snowy plovers
In order to better understand the nature of disturbances to wintering snowy plovers, I observed snowy plovers and activities that might disturb them at a beach near Devereux Slough in Santa Barbara, California, USA. Disturbance (activity that caused plovers to move or fly) to wintering populations of threatened western snowy plovers was 16 times higher at a public beach than at protected beaches.
Authors
Kevin D. Lafferty
Pneumocystosis in wild small mammals from California
Cyst forms of the opportunistic fungal parasite Pneumocystis carinii were found in the lungs of 34% of the desert shrew, Notiosorex crawfordi (n = 59), 13% of the ornate shrew, Sorex ornatus (n = 55), 6% of the dusky-footed wood rat, Neotoma fuscipes (n = 16), 2.5% of the California meadow vole,Microtus californicus (n = 40), and 50% of the California pocket mouse, Chaetodipus californicus (n= 2)
Authors
Juha Laakkonen, Robert N. Fisher, Ted J. Case
Non-native grass invasions and fire in the Mojave Desert
No abstract available at this time
Authors
M.L. Brooks, T. C. Esque
Monitoring of ecosystem dynamics in the Mojave Desert: the Beatley permanent plots
No abstract available at this time
Authors
R. H. Webb, T. C. Esque, P.A. Medica, L.A. DeFalco, M.B. Murov