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: 3710
Forest reproduction along a climatic gradient in the Sierra Nevada, California Forest reproduction along a climatic gradient in the Sierra Nevada, California
To elucidate broad-scale environmental controls of coniferous forest reproduction in the Sierra Nevada, California, we monitored reproduction for 5 years in 47 plots arrayed across a steep elevational (climatic) gradient. We found that both absolute seedling densities (stems
Authors
Phillip J. van Mantgem, Nathan L. Stephenson, Jon E. Keeley
Effects of fire on plant communities Effects of fire on plant communities
No abstract available at this time
Authors
M.L. Brooks
Effects of hydropower operations on spawning habitat, rearing habitat, and standing/entrapment mortality of fall Chinook salmon in the Hanford Reach of the Columbia River Effects of hydropower operations on spawning habitat, rearing habitat, and standing/entrapment mortality of fall Chinook salmon in the Hanford Reach of the Columbia River
This report describes research conducted primarily in 2003 and 2004 to evaluate the effects of upstream dam operations on spawning and rearing conditions for fall Chinook salmon, Oncorhynchus tshawytscha, in the Hanford Reach of the Columbia River. Results from habitat modeling tasks which continued in 2005 and 2006 are also included in this report. This study is focused on the effects...
Authors
Donald R. Anglin, Steven L. Haeseker, Joseph J. Skalicky, Howard Schaller, Kenneth F. Tiffan, James R. Hatten, Paul Hoffarth, John Nugent, David Benner, Marv Yoshinaka
San Francisco 's Golden Gate: A bridge between historically distinct coyote (Canis latrans) populations? San Francisco 's Golden Gate: A bridge between historically distinct coyote (Canis latrans) populations?
Although coyotes (Canis latrans) are well-known for their adaptability to human-modified landscapes (Riley et al. 2003), as with any medium to large-sized carnivore, they typically avoid highly urbanized areas (Crooks 2002), preferring instead to use habitat fragments linked by vegetated corridors (Tigas et al. 2002). However, recent observations of coyotes in San Francisco indicate...
Authors
Benjamin N. Sacks, Holly B. Ernest, Erin E. Boydston
A 21st century perspective on postfire seeding A 21st century perspective on postfire seeding
Wildfires elicit a perceived need for emergency action to stabilize denuded landscapes. Aerial seeding of rapidly growing nonnative grasses is used routinely in an attempt to control postfire erosion, despite limited scientific basis for its effectiveness and with little consideration for its unintended ecological impacts. As fire size and magnitude have increased in recent decades, so...
Authors
Jon E. Keeley, Craig D. Allen, J. Betancourt, G.W. Chong, C. J. Fotheringham, H.D. Safford
The allometric relationship between resting metabolic rate and body mass in wild waterfowl (Anatidae) and an application to estimation of winter habitat requirements The allometric relationship between resting metabolic rate and body mass in wild waterfowl (Anatidae) and an application to estimation of winter habitat requirements
Breeding densities and migration periods of Common Snipe in Colorado were investigated in 1974-75. Sites studied were near Fort Collins and in North Park, both in north central Colorado; in the Yampa Valley in northwestern Colorado; and in the San Luis Valley in south central Colorado....Estimated densities of breeding snipe based on censuses conducted during May 1974 and 1975 were, by...
Authors
M. R. Miller, J. McA Eadie
Level 1 Baseline Water Qaulity Report for the Klmath Network: Lava Beds National Monument, Lassen Volcanic National Park and Oregon Caves National Monument - 2005 Level 1 Baseline Water Qaulity Report for the Klmath Network: Lava Beds National Monument, Lassen Volcanic National Park and Oregon Caves National Monument - 2005
No abstract available at this time
Authors
C.R. Currens, Mary Ann Madej, H. Ambrose
Fire ecology of the Sierra Nevada Fire ecology of the Sierra Nevada
No abstract available.
Authors
J. W. van Wagtendonk
Fire as a global ‘herbivore’: the ecology and evolution of flammable ecosystems Fire as a global ‘herbivore’: the ecology and evolution of flammable ecosystems
It is difficult to find references to fire in general textbooks on ecology, conservation biology or biogeography, in spite of the fact that large parts of the world burn on a regular basis, and that there is a considerable literature on the ecology of fire and its use for managing ecosystems. Fire has been burning ecosystems for hundreds of millions of years, helping to shape global...
Authors
William J. Bond, Jon E. Keeley
Sexual differentiation in the distribution potential of northern jaguars (Panthera onca) Sexual differentiation in the distribution potential of northern jaguars (Panthera onca)
We estimated the potential geographic distribution of jaguars in the southwestern United States and northwestern Mexico by modeling the jaguar ecological niche from occurrence records. We modeled separately the distribution of males and females, assuming records of females probably represented established home ranges while male records likely included dispersal movements. The predicted
Authors
Erin E. Boydston, Carlos A. Lopez Gonzalez
Bufo canorus Camp 1916, Yosemite Toad. Bufo canorus Camp 1916, Yosemite Toad.
Yosemite toads (Bufo canorus) are endemic to the Sierra Nevada, California, from Ebbetts Pass, Alpine County to the Spanish Mountain area, Fresno County (Karlstrom 1962, 1973; Stebbins 1966; unpublished Sierra National Forest survey data, 1995, 2002). Sites occur from 1,950–3,444 m elevation, with the majority of sites between 2,590–3,048 m (Karlstrom, 1962). Jennings and Hayes (1994a)
Authors
Carlos Davidson, Gary M. Fellers
Nest occupancy and hatching success of Xantus's murrelets (Synthliboramphus hypoleucus) breeding on Santa Barbara Island, California during a twenty-year period Nest occupancy and hatching success of Xantus's murrelets (Synthliboramphus hypoleucus) breeding on Santa Barbara Island, California during a twenty-year period
No abstract available at this time
Authors
C.A. Schwemm, Joshua T. Ackerman, P.L. Martin, W. Perry