Whitebark Pine Conservation Program 2021 Annual Report
Hooke JS. 2022. Whitebark Pine Conservation Program 2021 Annual Report. Crater Lake National Park
Major activities of Crater Lake National Park’s Whitebark Pine Conservation Program in 2021 supported the Park’s goals and objectives for conserving and restoring whitebark pine as outlined in the Park’s Whitebark Pine Conservation Plan. Cones were collected from seventeen new whitebark pine trees and sent to the Dorena Genetic Resource Center for blister rust resistance screening. Sixty-seven trees were subject to annual Collection tree monitoring efforts. This monitoring detected no new mortality of Collection trees, no new blister rust infections, and no new mountain pine beetle attacks. Sixty-two whitebark pines of management importance were treated with verbenone to help ward off attack by the mountain pine beetle. Results from the Park’s long-term monitoring plots indicate that whitebark pine is continuing its decline within plot areas, as mature whitebark pine have been reduced by 32% from 2003-2021. The leading mortality agents of whitebark pine within plot areas are white pine blister rust and mountain pine beetle. The Park’s six whitebark pine restoration plantings were monitored with survival rates ranging from 41.7%˗76.7% five to twelve years after planting.
- Type
- Unpublished Report
- Authors
- Hooke, Jennifer
- Date of Issue
- 2022-04
- Units
- CRLA
- Keywords
- Mountain pine beetle, Pinus albicaulis, White Pine Blister Rust, Whitebark Pine
- Subjects
- Ecological Framework: Biological Integrity | Focal Species or Communities | Vegetation Complex