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: 3724
Tree and Shrub Community Monitoring Protocol for Channel Islands National Park Tree and Shrub Community Monitoring Protocol for Channel Islands National Park
No abstract available at this time
Authors
K. McEachern
The northern pintail in North America: status and conservation needs of a struggling population The northern pintail in North America: status and conservation needs of a struggling population
The number of northern pintails (Anas acuta) in North America continues to be low despite sub- stantially improved wetland habitat conditions as recorded by the May Breeding Population and Habitat Survey (May Survey, United States Fish and Wildlife Service [USFWS] 1998; Figure 1). In 1993-97, following extended drought during the 1980s and early 1990s, favorable precipitation pat- terns...
Authors
Michael R. Miller, David C. Duncan
Role of charred wood, heat-shock and light in germination of postfire phrygana species from the eastern Mediterranean Basin Role of charred wood, heat-shock and light in germination of postfire phrygana species from the eastern Mediterranean Basin
Seeds of 22 species collected from recently burned phrygana were tested for their response to fire-type cues of charred wood and heat-shock. All Cistus species were stimulated by brief heat-shock, as shown in previous studies; however, none responded to charred wood. Only one of the 22 species was stimulated by charred wood, and only in dark-inhibited seeds, and this response did not...
Authors
Jon E. Keeley, Melanie Babr-Keeley
Association of seasonal reproductive patterns with changing food availability in an equatorial carnivore, the spotted hyaena (Crocuta crocuta) Association of seasonal reproductive patterns with changing food availability in an equatorial carnivore, the spotted hyaena (Crocuta crocuta)
Reproductive seasonalitywas examined inan equatorial populationof free-living spotted hyaenas (Crocuta crocuta) inKenya. The study population was observed continuously for 10 years, duringwhich time the dates of all births, conceptions, weanings,andcubdeathswererecorded.Local preyabundancewasestimatedtwoto four timespermonth, andrainfallwas recordeddailythroughout thestudyperiod
Authors
K.E. Holekamp, M. Szykman, E. E. Boydston, L. Smale
Connectivity: Maintaining flows in fragmented landscapes Connectivity: Maintaining flows in fragmented landscapes
No abstract available.
Authors
A. Dobson, K. Ralls, M. Foster, M. E. Soule, D. Simberloff, D. Doak, J. A. Estes, L. S. Mills, D. Mattson, R. Dirzo, H. Arita, S. Ryan, E. A. Norse, R. F. Noss, D. Johns
Immaturity risk in a fire-dependent pine Immaturity risk in a fire-dependent pine
No abstract available.
Authors
Jon E. Keeley, Gidi Ne’eman, C. J. Fotheringham
Second year of surveying for fishes on the Santa Margarita River, San Diego and Riverside counties, California: September-December, 1998 Second year of surveying for fishes on the Santa Margarita River, San Diego and Riverside counties, California: September-December, 1998
No abstract available at this time
Authors
Robert N. Fisher, C. C. Swift
Bullfrogs-dinner guests we're sorry we invited. Arizona-Sonora Desert Museum, Tucson Bullfrogs-dinner guests we're sorry we invited. Arizona-Sonora Desert Museum, Tucson
No abstract available at this time
Authors
C. Schwalbe, P. Rosen
Temporal and spatial variability in thalweg profiles of a gravel-bed river Temporal and spatial variability in thalweg profiles of a gravel-bed river
This study used successive longitudinal thalweg profiles in gravel-bed rivers to monitor changes in bed topography following floods and associated large sediment inputs. Variations in channel bed elevations, distributions of residual water depths, percentage of channel length occupied by riffles, and a spatial autocorrelation coefficient (Moran's I) were used to quantify changes in...
Authors
Mary Ann Madej
Reference conditions for giant sequoia forest restoration: structure, process, and precision Reference conditions for giant sequoia forest restoration: structure, process, and precision
National Park Service policy directs that more natural conditions be restored to giant sequoia groves, which have been altered by a century of fire exclusion. Efforts to find a reasonable and practical definition of “natural” have helped drive scientists and land managers to use past grove conditions as reference conditions for restoration. Extensive research aimed at determining...
Authors
Nathan L. Stephenson
Effects of Protective Fencing on Birds, Lizards, and Black-Tailed Hares in the Western Mojave Desert Effects of Protective Fencing on Birds, Lizards, and Black-Tailed Hares in the Western Mojave Desert
), perennial plant cover, and structural diversity of perennial plants were evaluated from spring 1994 through winter 1995 at the Desert Tortoise Research Natural Area (DTNA), in the Mojave Desert, California. Abundance and species richness of birds were higher inside than outside the DTNA, and effects were larger during breeding than wintering seasons and during a high than a low...
Authors
M.L. Brooks
Subcutaneous anchor attachment increases retention of radio transmitters on Xantus' and marbled murrelets Subcutaneous anchor attachment increases retention of radio transmitters on Xantus' and marbled murrelets
We modified a subcutaneous anchor attachment and achieved transmitter reten- tion times that exceeded those reported previously for other attachments used on alcids. Traditional suture and epoxy attachment methods were used on Xantus' Murrelets in 1995 and 1996, while the modified attachment was used for Xantus' Murrelets in 1996 and 1997 and Marbled Murrelets in 1997. Modifications...
Authors
Scott H. Newman, John Y. Takekawa, Darrell L. Whitworth, Esther E. Burkett