Rim Drive Rehabilitation Revegetation Project 2021 Annual Report
Wyler CS, Heisler S, Hooke J. 2022. Rim Drive Rehabilitation Revegetation Project 2021 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 major construction project is correcting many deficiencies present along the Park’s historic Rim Drive and has been split into phases encompassing iterative work progression. Construction on Phase I of this project has been completed, although revegetation work associated with Phase I continues to be wrapped up. 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 2021 field season, 31,268 invasive plants were removed from the project area. Revegetation prescriptions were completed for 29 identified restoration sites for Phase II. Plant materials were collected from five distinct seed zones representing the floral diversity of the Phase II project area. Twenty-six seed accessions were provided to the USFS Dorena Genetic Resource Center for cleaning, and 31 seed accessions were cleaned at the Park. Approximately 240 rare plants were salvaged from within the project area. Documentation was refined for each disturbed site to inform future restoration efforts and assess revegetation efficacy. In 2021, Crater Lake National Park staff outplanted 1,335 native plants, dispersed 6,998 grams of native seed, and monitored 62 revegetated sites throughout areas disturbed by Phase I of the project.
- Type
- Unpublished Report
- Authors
- Wyler, Carolyn; Heisler, Scott; Hooke, Jen
- Date of Issue
- 2022-04
- Publisher
- National Park Service
- Units
- CRLA
- Keywords
- disturbance, native plant communities, outplanting, restoration, revegetation, road construction, seed collection, site preparation, Vegetation
- Subjects
- Ecological Framework: Biological Integrity | Focal Species or Communities | Vegetation Complex , Ecological Framework: Human Use | Point-Source Human Effects | Point-Source Human Effects