Rim Drive Rehabilitation Revegetation Project 2022 Annual Report
Wyler CS, Heisler S, Hooke J. 2023. Rim Drive Rehabilitation Revegetation Project 2022 Annual Report. National Park Service. Crater Lake National Park
Crater Lake National Park’s Rim Drive Rehabilitation Revegetation project aims to mitigate impacts to the rim environment from the Federal Highway Administration-sponsored Rim Drive Rehabilitation project. This project is correcting many deficiencies present along the park’s historic Rim Drive and has been split into phases encompassing iterative work progression. Revegetation work for Phase II commenced in the 2020 season with construction anticipated to start in June 2023. Through developing revegetation prescriptions, surveying for and controlling invasive plant species, salvaging and reestablishing rare plant populations disturbed by the construction project, and restoring disturbed areas using site-specific native plants and seed it is hoped that long-term impacts from this construction project to the park’s natural resources will be minimized. During the 2022 field season, 7,441 invasive plants were controlled from within the project area. Revegetation prescriptions were completed for 29 identified restoration sites. Plant materials were collected from five distinct seed zones representing the floral diversity of the Phase II project area. Nineteen seed accessions were provided to the U.S. Forest Service Dorena Genetic Resource Center for cleaning, and 16 seed accessions were cleaned by park staff. Approximately 766 rare plants were salvaged from the project area. Documentation was refined for each restoration site to inform future efforts and assess revegetation efficacy.
- Type
- Unpublished Report
- Authors
- Wyler, Carolyn; Heisler, Scott; Hooke, Jen
- Date of Issue
- 2023-04
- Publisher
- National Park Service
- Units
- CRLA
- Keywords
- disturbance, native plant communities, outplanting, restoration, revegetation, road construction, seed collection, site preparation, vegetation