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Strategies for Landscape Control and Containment of False-brome
Tom KayeInstitute for Applied Ecology
Corvallis, Oregon
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A ‘contagious’ species• Full geographic spread in North America is broadening• Present in Oregon, California, Washington (?), New
York, Virginia, Michigan …
California, Esa Crumb New York, Steven Daniel
Oregon
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Disperses easily
• Equipment
• Clothing
• Pets
• Wildlife (deer)
• Water?
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Invasiveness
• Enemy Release Hypothesis– Roy et al. 2011
• Evidence of within-species hybridization, multiple introductions to western US– Rosenthal et al. 2008
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Landscape invasion:typical process for false-brome
• Starts in areas where people and wildlife travel: – Roadsides, Parking lots, Trailheads
• Spreads rapidly along roadsides and forest edges
• Also spreads quickly into closed-canopy forest
• Spreads more slowly into prairies and pastures – but facilitated by isolated trees
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forest
False brome invasion
grassland
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Landscape control strategies
• Detect and control new and isolated patches
• Contain large populations– Start with reducing seed production or
eliminating plants in high traffic areas – Stop the spread!
• Roads, trailheads, parking areas, hiking trails, game trails
• After containment, move to eradication if feasible
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forest
False brome invasion
grassland
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forest
False brome invasion
grassland
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Landscape control strategies
• Establish partnerships, especially with adjacent landowners– Neighbors– Agencies
• Use existing networks, if possible, to coordinate– Example: Middle Fork Willamette Watershed
Council with funding from OWEB, NFWF• Coordinated survey across multiple properties,
outreach and education, control opportunities
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Landscape control strategies
• Land management activities– Before:
• Eradicate false brome to avoid spreading to other sites• Clean equipment before entering new areas
– After:• Clean equipment before leaving
– Adopt strict contract language that stipulates these actions, with consequences.
• Public outreach– Stop invasions before the start