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Western Ecological Research Center (WERC)

The Western Ecological Research Center (WERC) is a USGS Ecosystems Mission Area operation serving primarily California and Nevada. WERC scientists work closely with Federal, State, academic, and other collaborators to address a diverse array of high-profile topics. Topics include research on effects of wildfire, sea level rise, drought, energy development and more on federal Trust species.

News

A Tale of Two Islands and the Future of an Ocean Sentinel Seabird

A Tale of Two Islands and the Future of an Ocean Sentinel Seabird

EcoNews - Vol. 7 | Issue 2

EcoNews - Vol. 7 | Issue 2

Causal Analysis of Fire Regime Drivers

Causal Analysis of Fire Regime Drivers

Publications

Fatal leptospirosis in southern sea otters from Central California: Pathologic findings and detection of Leptospira interrogans Fatal leptospirosis in southern sea otters from Central California: Pathologic findings and detection of Leptospira interrogans

Leptospira interrogans serovar Pomona infections cause periodic outbreaks in California sea lions (CSLs; Zalophus californianus) and sporadic deaths in phocids. However, the frequency of infection and associated health impacts remain uncharacterized in sympatric threatened southern sea otters (SSOs; Enhydra lutris nereis), which serve as important sentinels of coastal health. Given the...
Authors
Margaret E. Martinez, Pádraig J. Duignan, Katherine C. Prager, Cara L. Field, Mary E. Gomes, Rinosh Mani, Lilian P. Carswell, Tim Tinker, Joseph A. Tomoleoni, Michael J. Murray, Ri K. Chang, Lloyd-Smith O. James

Estimating basal area change by tree size with Sentinel-2 imagery following four fires in California, USA Estimating basal area change by tree size with Sentinel-2 imagery following four fires in California, USA

Background Failure to account for tree size when estimating burn severity may not accurately capture post-fire tree mortality and post-fire forest structure. Aims We explored whether basal area mortality by tree size class could be determined from remotely-sensed burn severity indices based solely on Sentinel-2 satellite imagery. Methods We used data collected in four large California...
Authors
Micah C. Wright, Phillip J. van Mantgem, Christopher Y.S. Wong, Derek J.N. Young, Saba J. Saberi, Andrew M. Latimer, Joseph A.E. Stewart, Adrian J. Das, Calvin A. Farris, Emma J. McClure, Lauren N. Youngblood, Hugh D. Safford, Kristen L. Shive

Loss and transformation of coastal wetlands due to global change in the conterminous United States: Past, present, and future Loss and transformation of coastal wetlands due to global change in the conterminous United States: Past, present, and future

Coastal wetlands are being transformed by global change, impacting the ecological and societal benefits provided by these ecosystems. Synthesizing knowledge of historical and expected future transformations in coastal wetlands can help inform forward-looking planning and stewardship efforts. Here, we review anticipated future ecological transformations in coastal wetlands of the...
Authors
Michael Osland, Bogdan Chivoiu, Kevin J. Buffington, Kristin Byrd, Joel Carr, Judith Z. Drexler, Nicholas Enwright, Neil K. Ganju, James B. Grace, Eric E. Grossman, Glenn Guntenspergen, Kurt P. Kowalski, Ken W. Krauss, Jessica R. Lacy, Gregory E. Noe, Davina L. Passeri, Stephanie Romanach, Christopher F. Smith, Camille L. Stagg, Karen M. Thorne, Janet R. Keough

Science

Western U.S. Using Networked Weather Radar and Wildlife Tracking Data

USGS scientists from the Wetland and Aquatic Research Center and the Western Ecological Research Center are collaborating to synthesize data on migratory bird use of Bureau of Land Management lands in the western U.S. to support permitting decisions.
Western U.S. Using Networked Weather Radar and Wildlife Tracking Data

Western U.S. Using Networked Weather Radar and Wildlife Tracking Data

USGS scientists from the Wetland and Aquatic Research Center and the Western Ecological Research Center are collaborating to synthesize data on migratory bird use of Bureau of Land Management lands in the western U.S. to support permitting decisions.
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Science for management of America’s iconic wild horses and burros

Wild horses and burros are iconic wildlife of the western USA as well as a complicated management issue on tribal, state, and federal lands. Due to their history as domesticated animals, these wild equids – also called “free-roaming” or “feral” equids – can reproduce quickly, and have few natural predators, allowing their populations to grow rapidly if not managed. When populations are too large...
Science for management of America’s iconic wild horses and burros

Science for management of America’s iconic wild horses and burros

Wild horses and burros are iconic wildlife of the western USA as well as a complicated management issue on tribal, state, and federal lands. Due to their history as domesticated animals, these wild equids – also called “free-roaming” or “feral” equids – can reproduce quickly, and have few natural predators, allowing their populations to grow rapidly if not managed. When populations are too large...
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Greater Sage-Grouse Population Monitoring Framework: Cheat Sheet

The Greater Sage-grouse Population Monitoring Framework fills a prominent information gap to help inform current assessments of sage-grouse population trends at nested spatial and temporal scales. It is centered on four objectives: (1) create a standardized database of lek counts; (2) develop biologically based spatial population structures by clustering leks; (3) estimate spatial trends at...
Greater Sage-Grouse Population Monitoring Framework: Cheat Sheet

Greater Sage-Grouse Population Monitoring Framework: Cheat Sheet

The Greater Sage-grouse Population Monitoring Framework fills a prominent information gap to help inform current assessments of sage-grouse population trends at nested spatial and temporal scales. It is centered on four objectives: (1) create a standardized database of lek counts; (2) develop biologically based spatial population structures by clustering leks; (3) estimate spatial trends at...
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