Invasive Vegetation Management 2019 Annual Report
Randall DR, Olsen E, Hooke JS, Hasty H, McNees V, Hogan S, Jelinske M. 2020. Invasive Vegetation Management 2019 Annual Report. National Park Service. Crater Lake National Park
Work performed in 2019 by Crater Lake National Park’s Invasive Vegetation Management program continued a steady 17-year effort to detect, contain, and reduce infestations of invasive plant species within the Park. The 2019 season marked the third year in which the Invasive Vegetation Management Plan was implemented, and the second full field season of Park-wide herbicide application. Using manual and chemical methods an estimated 180,240 invasive plants were treated in 2019. Two new-to-the-park invasive plant species were discovered this year: common hound’s tongue (Cynoglossum officinale) was discovered near Park employee housing, and desert alyssum (Alyssum desertorum) was discovered at the Ponderosa Pine Picnic Area along Highway 62. While surveying new areas of the park five new large invasive plant infestations were discovered within the western half of the Park’s backcountry areas.
- Type
- Unpublished Report
- Authors
- Randall, Delacey; Olsen, Elena; Hooke, Jennifer; Hasty, Hamilton; McNees, Vance; Hogan, Sarah; Jelinske, Matthew
- Date of Issue
- 2020-04
- Publisher
- National Park Service
- Units
- CRLA
- Keywords
- Invasive, Plants, Treatment, Vegetation
- Subjects
- Ecological Framework: Biological Integrity | Invasive Species | Invasive/Exotic plants