Patricia Valcarcel, CWB®

Regulatory Program Director


Patricia Valcarcel is WRA’s Regulatory Program Director. She has a wealth of experience in both wildlife biology and wildlife regulations. Her focus is reptile and amphibian species but has broad experience with wildlife species in northern California and California’s Central Valley including Swainson’s hawk and burrowing owl. She earned an MS degree in Wildlife Sciences while conducting research on the spatial ecology of the threatened giant gartersnake and has worked on a variety of field research projects ranging from animal movements to behavior and reproduction. She also leads training on collection of samples for environmental DNA (eDNA) analysis and implemented this method for detection of giant gartersnake in project planning.
Patricia blends her knowledge of wildlife into permitting complex projects involving special-status species and advises on project design to reduce impacts and improve the approval process. She is one of WRA’s leading Habitat Conservation Plan (HCP) experts and is currently working on an amendment to the Clark County, Nevada Multi-Species HCP for their Desert Conservation Program. She leads an on-call service contract with the San Joaquin County Multi-Species Habitat Conservation and Open Space Plan (SJMSCP). Patricia consults with both federal and state wildlife agencies and prepares federal Section 7 Biological Assessments, federal Section 10 HCPs, and California Incidental Take Permits for complicated and long-term projects. In addition, Patricia provides oversight of complex environmental permitting, permit compliance, and mitigation and monitoring efforts associated with these permits.



Halstead, B.J., Valcarcel, P., Wylie, G.D., Coates, P.S., Casazza, M. L., and Rosenberg, D.K. 2016. Active Season Microhabitat and Vegetation Selection by Giant Gartersnakes Associated with a Restored Marsh in California. Journal of Fish and Wildlife Management 7(2): 397-407.

Halstead, B.J., Wylie, G.D., Coates, P.S., Valcarcel, P., and Casazza, M. L. 2012. Bayesian shared frailty models for regional inference about wildlife survival. Animal Conservation 15: 117–124.

Valcarcel, P. 2011. Giant gartersnake spatial ecology in agricultural and constructed wetlands. Corvallis, Oregon, Oregon State University. Master’s thesis.


Flat-tailed Horned Lizard Habitat Modelling, Bureau of Land Management, Yuma, Arizona

Clark County Multi-Species Habitat Conservation Plan, Desert Conservation Program, Clark County, Nevada

Lookout Slough Restoration Project, Ecosystems Investment Partners/Department of Water Resources, Solano County, California

Multi-Species Habitat Conservation and Open Space Plan On-Call, San Joaquin Council of Governments, San Joaquin County, California

Dos Osos Reservoir Replacement Project, East Bay Municipal Utilities District, Contra Costa County, California

Stream Maintenance Program, City of Burlingame, Burlingame, California

Sherman Island Whale’s Mouth Wetland Restoration Project, Ducks Unlimited/Department of Water Resources, Sacramento County, California

General Plan Update EIR, City of Modesto, Modesto, California

Wavecrest Coastal Trail Northern and Southern Alignments, Placeworks/Coastside Land Trust, Half Moon Bay, San Mateo County, California


MS, Wildlife Sciences, Oregon State University. 2011

BA, Environmental Sciences, Northwestern University. 2003


USFWS Recovery Permit for giant gartersnake and San Francisco gartersnake (TE-64146A-1)

Certified Wildlife Biologist – Wildlife Society

California Department of Fish and Wildlife Scientific Collecting Permit