Controlling the Core Estero Population of Scotch Broom at Point Reyes National Seashore
Simpson B. 2015. Controlling the Core Estero Population of Scotch Broom at Point Reyes National Seashore. Point Reyes National Seashore. Point Reyes Station, California
This project focused on the heart or “core” infestation of Scotch broom within Point Reyes NS (PORE). The project goal was to significantly reduce broom to a plateau state – also referred to as a maintenance level state of control. Multiple treatments were carried out on 49 canopy-cover acres (a.k.a. “net” acres). Scotch broom patches were distributed across a 575-acre site adjacent to Drakes Estero; one of the three marine wilderness areas in the country. When referring to “gross” acres, both the target plant and the non-target plant areas are included (or the actual geographic extent of the area). Broom produces large numbers of long-lived seeds (5-30 years); therefore multi-year seedling treatments have been required. Starting in 2012, multi-year treatments totaling 277 net acres have effectively eliminated the large standing mono-cultures of Scotch broom across the site. Seventy-four of those acres involved a variety of more traditional treatments (manual, herbicide, excavation, and chainsaw work) and 204 acres received a prescribe burn. The overall primary objective of the project has been achieved; however substantial follow-up will be required for two more years.
- Type
- Unpublished Report
- Authors
- Simpson, Bobbi
- Date of Issue
- 2015-11
- Publisher
- Point Reyes National Seashore
- Units
- PORE
- Keywords
- Control, Cytisus scoparius, Exotic Plant, Infestation, Invasive Plant, scotch broom