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
Genetic and environmental indicators of climate change vulnerability for desert bighorn sheep Genetic and environmental indicators of climate change vulnerability for desert bighorn sheep
Assessments of organisms’ vulnerability to potential climatic shifts are increasingly common. Such assessments are often conducted at the species level and focused primarily on the magnitude of anticipated climate change (i.e., climate exposure). However, wildlife management would benefit from population-level assessments that also incorporate measures of local or regional potential for...
Authors
Tyler G. Creech, Clinton W. Epps, John D. Wehausen, Rachel S. Crowhurst, Jef R. Jaeger, Kathleen Longshore, Brandon Holton, William B. Sloan, Ryan J. Monello
Slender salamanders (genus Batrachoseps) reveal Southern California to be a center for the diversification, persistence, and introduction of salamander lineages Slender salamanders (genus Batrachoseps) reveal Southern California to be a center for the diversification, persistence, and introduction of salamander lineages
Background The southern California biodiversity hotspot has had a complex geological history, with both plate tectonic forces and sea level changes repeatedly reconfiguring the region, and likely driving both lineage splittings and extinctions. Here we investigate patterns of genetic divergence in two species of slender salamanders (Plethodontidae: Batrachoseps) in this region. The...
Authors
Elizabeth L Jockusch, Robert W Hansen, Robert N. Fisher, David B Wake
Integrating the evidence for a terrestrial carbon sink caused by increasing atmospheric CO2 Integrating the evidence for a terrestrial carbon sink caused by increasing atmospheric CO2
Atmospheric carbon dioxide concentration ([CO2]) is increasing, which increases leaf‐scale photosynthesis and intrinsic water‐use efficiency. These direct responses have the potential to increase plant growth, vegetation biomass, and soil organic matter; transferring carbon from the atmosphere into terrestrial ecosystems (a carbon sink). A substantial global terrestrial carbon sink would...
Authors
Anthony P. Walker, Martin G De Kauwe, Ana Bastos, Soumaya Belmecheri, Katerina Georgiou, Ralph F. Keeling, Sean M. McMahon, Belinda E. Medlyn, David J P Moore, Richard J. Norby, Sonke Zaehle, Kristina J. Anderson-Teixeira, Giovanna Battipaglia, Roel J W Brienen, Kristine G Cabugao, Maxime Cailleret, Elliott Campbell, Josep G Canadell, Philippe Ciais, Matthew E Craig, David S Ellsworth, Graham D Farquhar, Simone Fatichi, Joshua B. Fisher, David C Frank, Heather Graven, Lianhong Gu, Vanessa Haverd, Kelly A Heilman, Martin Heimann, Bruce A Hungate, Colleen M. Iverson, Fortunat Joos, Mingkai Jiang, Trevor F. Keenan, Jurgen Knauer, Christian Korner, Victor O Leshyk, Sebastian Leuzinger, Yao Liu, Natasha MacBean, Yadvinder Malhi, Tim R McVicar, Josep Penuelas, Julia Pongratz, A Shafer Powell, Terhi Riutta, Manon E B Sabot, Juergen Schleucher, Stephen Sitch, William K. Smith, Benjamin N. Sulman, Benton Taylor, Cesar Terrer, Margaret S. Torn, Kathleen K Treseder, Anna T Trugman, Susan E. Trumbore, Phillip J. van Mantgem, Steve L Voelker, Mary E Whelan, Peiter A Zuidema.
Batrachochytrium salamandrivorans (Bsal) not detected in an intensive survey of wild North American amphibians Batrachochytrium salamandrivorans (Bsal) not detected in an intensive survey of wild North American amphibians
The salamander chytrid fungus (Batrachochytrium salamandrivorans [Bsal]) is causing massive mortality of salamanders in Europe. The potential for spread via international trade into North America and the high diversity of salamanders has catalyzed concern about Bsal in the U.S. Surveillance programs for invading pathogens must initially meet challenges that include low rates of...
Authors
J. Hardin Waddle, Daniel A. Grear, Brittany Mosher, Evan H. Campbell Grant, Michael J. Adams, Adam R. Backlin, William Barichivich, Adrianne B. Brand, Gary M. Bucciarelli, Daniel L. Calhoun, Tara Chestnut, Jon M. Davenport, Andrew E. Dietrich, Robert N. Fisher, Brad Glorioso, Brian J. Halstead, Marc P Hayes, R. Ken Honeycutt, Blake R. Hossack, Patrick M. Kleeman, Julio A. Lemos-Espinal, Jeffrey M. Lorch, Robert W. Atkinson, Erin L. Muths, Christopher Pearl, Katherine Richgels, Charles W Robinson, Mark F. Roth, Jennifer Rowe, Walter Sadinski, Brent H. Sigafus, Iga Stasiak, Samuel Sweet, Susan C. Walls, Gregory J Watkins-Colwell, C. LeAnn White, Lori A Williams, Megan E. Winzeler
Kelp forest monitoring at Naval Base Ventura County, San Nicolas Island, California: Fall 2018 and Spring 2019, fifth annual report Kelp forest monitoring at Naval Base Ventura County, San Nicolas Island, California: Fall 2018 and Spring 2019, fifth annual report
Introduction Kelp forests and rocky reefs are among the most recognized marine ecosystems and provide the primary habitat for several species of fishes, invertebrates, and algal assemblages (Stephens and others, 2006). In addition, kelp forests have been shown to be important carbon dioxide sinks (Wilmers and others, 2012) and are an important source of nearshore marine primary...
Authors
Michael C. Kenner, Joseph A. Tomoleoni
Mortality predispositions of conifers across western USA Mortality predispositions of conifers across western USA
Conifer mortality rates are increasing in western North America, but the physiological mechanisms underlying this trend are not well understood.We examined tree‐ring‐based radial growth along with stable carbon (C) and oxygen (O) isotope composition (δ13C and δ18O, respectively) of dying and surviving conifers at eight old‐growth forest sites across a strong moisture gradient in the...
Authors
Wenzhi Wang, Nathan B. English, Charlotte Grossiord, Arthur Gessler, Adrian Das, Nathan L. Stephenson, Christopher H. Baisan, Craig D. Allen, Nate G. McDowell
Postfire growth of seeded and planted big sagebrush - Strategic designs for restoring Greater Sage-grouse nesting habitat Postfire growth of seeded and planted big sagebrush - Strategic designs for restoring Greater Sage-grouse nesting habitat
Wildfires change plant community structure and impact wildlife habitat and population dynamics. Recent wildfire‐induced losses of big sagebrush (Artemisia tridentata) in North American shrublands are outpacing natural recovery and leading to substantial losses in habitat for sagebrush‐obligate species such as Greater Sage‐grouse. Managers are considering restoration strategies that...
Authors
David A. Pyke, Robert K. Shriver, Robert S. Arkle, David S. Pilliod, Cameron L. Aldridge, Peter S. Coates, Matthew Germino, Julie A. Heinrichs, Mark A. Ricca, Scott E. Shaff
The catastrophic decline of tortoises at a fenced natural area The catastrophic decline of tortoises at a fenced natural area
Agassiz’s desert tortoise (Gopherus agassizii), a threatened species of the southwestern United States, has severely declined to the point where 76% of populations in critical habitat (Tortoise Conservation Areas) are below viability. The potential for rapid recovery of wild populations is low because females require 12–20 years to reach reproductive maturity and produce few eggs...
Authors
Kristin H. Berry, Julie L. Yee, Timothy A. Shields, Laura Stockton
Wildfire and the ecological niche: Diminishing habitat suitability for an indicator species within semi‐arid ecosystems Wildfire and the ecological niche: Diminishing habitat suitability for an indicator species within semi‐arid ecosystems
Globally accelerating frequency and extent of wildfire threatens the persistence of specialist wildlife species through direct loss of habitat and indirect facilitation of exotic invasive species. Habitat specialists may be especially prone to rapidly changing environmental conditions because their ability to adapt lags behind the rate of habitat alteration. As a result, these...
Authors
Shawn T. O’Neil, Peter S. Coates, Brianne E. Brussee, Mark A. Ricca, Shawn P. Espinosa, Scott C. Gardner, David J Delahanty
A global parasite conservation plan A global parasite conservation plan
Found throughout the tree of life and in every ecosystem, parasites are some of the most diverse, ecologically important animals on Earth—but in almost all cases, the least protected by wildlife or ecosystem conservation efforts. For decades, ecologists have been calling for research to understand parasites' important ecological role, and increasingly, to protect as many species from...
Authors
Colin J. Carlson, Skylar R. Hopkins, Kayce C Bell, Jorge Dona, Stephanie S Godfrey, Mackenzie L Kwak, Kevin D. Lafferty, Melinda L Moir, Kelly A Speer, Giovanni Strona, Mark Torchin, Chelsea L. Wood
Biotelemetry data for Golden Eagles (Aquila chrysaetos) captured in coastal southern California, February 2017–December 2019 Biotelemetry data for Golden Eagles (Aquila chrysaetos) captured in coastal southern California, February 2017–December 2019
Because of a lack of clarity about the status of golden eagles (Aquila chrysaetos) in coastal southern California, the U.S. Geological Survey, in collaboration with U.S. Fish and Wildlife Service, California Department of Fish and Wildlife, Bureau of Land Management, and San Diego Management and Monitoring Program, began a multi-year survey and tracking program of golden eagles to...
Authors
Jeff A. Tracey, Melanie C. Madden, James C. Molden, Jeremy B. Sebes, Peter H. Bloom, Robert N. Fisher
Rediscovery of the horseshoe shrimp Lightiella serendipita Jones, 1961 (Cephalocarida: Hutchinsoniellidae) in San Francisco Bay, California, USA, with a key to the worldwide species of Cephalocarida Rediscovery of the horseshoe shrimp Lightiella serendipita Jones, 1961 (Cephalocarida: Hutchinsoniellidae) in San Francisco Bay, California, USA, with a key to the worldwide species of Cephalocarida
Lightiella serendipitaJones, 1961 was first discovered in San Francisco Bay, California in 1953, but it had not been observed since 1988. In 2017, a total of 13 adult L. serendipita specimens were found as part of a study in central San Francisco Bay, nearly doubling the total number of specimens ever collected. We measured vertical distribution of macroinvertebrates and environmental...
Authors
Crystal Garcia, Isa Woo, D. Christopher Rogers, Alison M Flanagan, Susan E.W. De La Cruz