choosing your battles, prioritizing invasive plant … · vinca major, henry cowell redwoods sp ....
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Choosing Your Battles, Prioritizing Invasive Plant Management
Tim Hyland, Santa Cruz District Cal-IPC Symposium October 9th, 2014
Hypericum canariense, San Mateo County
What your predecessor worked on? What has funding?
Favorite Place? Favorite Weed?
How to Prioritize?
Potpourri of Weeds, Adjacent to Año Nuevo SP
Wilder Ranch & Henry Cowell Redwoods SP
What And Where Are Your Weeds?
Our Approach
• Goal
• Rate/Likelihood of Spread
• Threat to Sensitive Resources
• Logistics
• Politics
• Potential for Success
• Eradication dividend
Vinca major, Henry Cowell Redwoods SP
Goal
• Eradication
• Elimination / Zero Density
• Outlier Control
• Perimeter Control
• Sustained Control
French Broom, Twin Lakes SB
Rate / Likelihood of Spread
Año Nuevo SP Hypericum canariense, San Mateo County
Threat to Sensitive Resources
• Listed Species
• Rare Habitats
Portuguese Broom in Sand Parkland, Santa Cruz County
Logistics
• Distance from base of operations
• Steep slopes
• Accessibility
• Poison oak
• Complexity of control techniques
Politics
• Multiple Land Owners
• Visibility of Project
• Public Perception
• Permitting
• Other entities Interested in Helping
Natural Bridges SB
• Efficacy of Control
• Seed Bank
• Detectability
• Life Cycle
Potential for Success
• Efficacy of Control Method
• Seed Bank
• Detectability
• Life Cycle
• Likelihood of Reinvasion
Potential for Success
Sunset SB
Eradication Dividend
Eucalyptus globulus, Santa Cruz County
Excel Ranking Form
Park M.U. Sub M.U. Goal Species Wilder Ranch Gray Whale Baldwin Grasslands Zero Density Cotoneaster
Likelihood of spread 2
Threat to sensitive resources 2
Logistics (P.O. slope, access) 3
Political (Neighbors, county, crew morale) 3
Potential for Success (Restoration, follow up) 3
Eradication dividend (Effort required to maintain goal) 2
Ranking 15
Scores range from 0-3 with the highest number denoting ease and threat
Final Product
Resources Management Priorities: Fall 2014 (September 1st to November 30th)
Park Mng. Unit Species Priority Est. Hrs. Comments
5 Year Goal
Big Basin Lower Waddell Ammophila 16 Su F W 0 Reilly zero density
Sunset Dune system Ammophila 17 Su F W 224 Hyland zero density
Sunset State Preserve Calla lilies 14 F 0 with Ehrharta erradicate
Manresa Uplands Cape Ivy 13 Su F W 0 sustained control
Wilder Seaward of Hwy 1 Cape Ivy 13 Su F 0 containment
Ano Coastal Prairie Cypress 14 Su F W 56 erradicate
Ano Ano Point Cypress 16 Su F W 56 Perimeter Control
Ano Franklin Point Cypress 16 Su F W 0 Completed summer Perimeter Control
Ano South Doug-Fir 16 F W 0 Completed summer Perimeter Control
Wilder Inland of Hwy 1 Doug-Fir 16 F W 0 Completed summer Outlier Control
Wilder Gray Whale Doug-Fir 16 F W 112 Outlier Control
Henry Cowell Sand Hills Doug-Fir 17 F W 28 Perimeter Control
Sunset State preserve Ehrharta calycina 17 Su F W Sp 56 zero density
Portola Campground Ehrharta erecta 17 Su F W Sp 0 completed summer zero density
Sunset State preserve Ehrharta erecta 17 Su F W Sp 9 w. Calycina zero density