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: 3708
Composition of Suspended Load as a Measure of Stream Health Composition of Suspended Load as a Measure of Stream Health
No abstract available at this time
Authors
Mary Ann Madej, M.A. Wilzbach, K.W. Cummins, S.J. Hadden, C.C. Ellis
Marine reserve design for conservation and fisheries management: a case study from the California Channel Islands Marine reserve design for conservation and fisheries management: a case study from the California Channel Islands
Five races of cottontail rabbits belonging to three species occur in Virginia. One of them, the Mearns cottontail (Sylvilagus floridanus mearnsi), is reported here for the first time. It occurs in six southwestern counties of the state, while the eastern cottontail (S. f. mallurus) occurs in the remainder of the state with the exception of Smith and Fishermans islands off the eastern...
Authors
S.J. Airame, E. Dugan, K. D. Lafferty, H.M. Leslie, D.A. McArdle, R.R. Warner
Individual variation in space use by female spotted hyenas Individual variation in space use by female spotted hyenas
Large carnivores range more widely than many other terrestrial mammals, and this behavior tends to bring them into frequent conflict with humans. Within any carnivore population, individual variation in patterns of space use should be expected to make some animals more vulnerable than others to risks of mortality from humans and other sources. In this study, our goal was to document...
Authors
Erin E. Boydston, Karen M. Kapheim, Micaela Szykman, Kay E. Holekamp
Desert tortoise (Gopherus agassizii) survival at two eastern Mojave Desert sites: Death by short-term drought? Desert tortoise (Gopherus agassizii) survival at two eastern Mojave Desert sites: Death by short-term drought?
Survival of adult Desert Tortoises (Gopherus agassizii) appears related to site-specific variation in precipitation and productivity of annual plants. We studied adult tortoise survival rates at two closely situated, but physiographically different, sites in the eastern Mojave Desert over a nine-year period (spring 1992 to spring 2001). Survival rates were initially derived from...
Authors
Kathleen M. Longshore, Jef R. Jaeger, J. Mark Sappington
Species area relationships in mediterranean-climate plant communities Species area relationships in mediterranean-climate plant communities
Aim To determine the best-fit model of species–area relationships for Mediterranean-type plant communities and evaluate how community structure affects these species–area models. Location Data were collected from California shrublands and woodlands and compared with literature reports for other Mediterranean-climate regions. Methods The number of species was recorded from 1, 100 and 1000...
Authors
Jon E. Keeley, C. J. Fotheringham
The use of multi-temporal Landsat Normalized Difference Vegetation Index (NDVI) data for mapping fuels in Yosemite National Park, USA The use of multi-temporal Landsat Normalized Difference Vegetation Index (NDVI) data for mapping fuels in Yosemite National Park, USA
The objective of this study was to test the applicability of using Normalized Difference Vegetation Index (NDVI) values derived from a temporal sequence of six Landsat Thematic Mapper (TM) scenes to map fuel models for Yosemite National Park, USA. An unsupervised classification algorithm was used to define 30 unique spectral-temporal classes of NDVI values. A combination of graphical...
Authors
Jan W. Van Wagtendonk, Ralph R. Root
Growth rate predicts mortality of Abies concolor in both burned and unburned stands Growth rate predicts mortality of Abies concolor in both burned and unburned stands
Tree mortality is often the result of both long-term and short-term stress. Growth rate, an indicator of long-term stress, is often used to estimate probability of death in unburned stands. In contrast, probability of death in burned stands is modeled as a function of short-term disturbance severity. We sought to narrow this conceptual gap by determining (i) whether growth rate, in...
Authors
Phillip J. van Mantgem, Nathan L. Stephenson, Linda S. Mutch, Veronica G. Johnson, Annie M. Esperanza, David J. Parsons
Status of amphibians at the Zoige Wetlands, Sichuan Province, China Status of amphibians at the Zoige Wetlands, Sichuan Province, China
No abstract available.
Authors
Gary M. Fellers, Yuezhao Wang, Liu Shaoyin
The wilderness use simulation model: an historical perspective The wilderness use simulation model: an historical perspective
No abstract available.
Authors
J. W. van Wagtendonk
Distribution, abundance, and breeding activities of the southwestern willow flycatcher at Marine Corps Base Camp Pendleton, California. 2002 Annual Report Distribution, abundance, and breeding activities of the southwestern willow flycatcher at Marine Corps Base Camp Pendleton, California. 2002 Annual Report
No abstract available at this time
Authors
B.E. Kus, K.E. Kenwood
Neotropical migratory bird monitoring study at Marine Corps Base Camp Pendleton, California. 2002 Annual Report. Prepared for Assistant Chief of Staff, Environmental Security, Marine Corps Base Camp Pendleton Neotropical migratory bird monitoring study at Marine Corps Base Camp Pendleton, California. 2002 Annual Report. Prepared for Assistant Chief of Staff, Environmental Security, Marine Corps Base Camp Pendleton
No abstract available at this time
Authors
B.E. Kus, D.A. Kisner
Evaluating options for revegetation following a catastrophic fire in a pinyon-juniper community at Grand Canyon/Parashant National Monument, Arizona Evaluating options for revegetation following a catastrophic fire in a pinyon-juniper community at Grand Canyon/Parashant National Monument, Arizona
No abstract available at this time
Authors
S.J. Scoles, T. C. Esque, L.A. DeFalco, S.E. Eckert, D.F. Haines