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The Brown Treesnake Program: A Model Program for IAS Management

Explore the success story of the Brown Treesnake Program in managing invasive species, focusing on milestones, approaches, and lessons learned in Guam, Palau, and other South Pacific Islands. Learn about the regulatory framework, allocation of resources, sustainability, and ecological impacts over 25 years.

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The Brown Treesnake Program: A Model Program for IAS Management

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  1. The Brown Treesnake Program: A Model Program for IAS Management Marc A. Hall and Stephen M. Mosher Joint Region Marianas BTS Program Manager Photo: Mitchell Warner

  2. Overview • Arrival • Basic Ecology • Milestones • Approaches • Lessons Learned

  3. GUAM

  4. Okinawa CONUS Diego Garcia CNMI Hawai’i FSM/RMI Guam Palau South Pacific Islands Verified Sightings/Captures

  5. Basic Ecology • Arboreal • Nocturnal • Cryptic • Semi-Constrictor • Mildly Venomous • Wide Carnivorous Diet

  6. Key BTSMilestones • 1986 BTS Identified as Major Factor in Bird Loss on Guam • 1993 Wildlife Services Sets Up Operations • 1998 Last Known Live BTS in HI • 1999 BTS Working Group Established • 2001 Acetaminophen Identified • 2004 BTS Eradication and Control Act • 2011 Aerial Baiting Tested • 2018 Automated Delivery System Tested

  7. Multi Agency

  8. Multiple Approaches • Operational • Research • Regulatory • Overlapping/Mutual Support

  9. Methods • Pictures of tools Photo: APHIS/USDA/NWRC

  10. How is Success Measured? • Numbers Captured • Zero off-island • Development of Technology • Movement to Next Level of Control (technology/methodology/scale) • Genuine Ecological Impact

  11. 25 Years

  12. What Can Be Learned? • Regulatory Framework • Allocation of Resources • Creating Sustainability/Durability • Appropriate Tool Development

  13. Regulatory Framework • How Much Do You Need • How Much Already Exists • What Is The Intent • Prevent Duplicative/Oppositional Efforts • Will it Solve/Create a Problem

  14. BTS Interdiction & Control Drivers

  15. Allocation of Resources • Mission Requirements • Funds • Program Management • Operational/Research Investment

  16. Desired Approach Spectrum of Solutions Relates to needs and Complexity

  17. Sustainability/Durability • Integrating Regulations • Leveraging Existing NR Needs • Growing Partnerships • Willingness to Adapt • Multiple Lines of Enquiry

  18. Invasive Species Impacts • Fundamental Impacts to Ecosystems • Habitat Alteration • Impact to other Species • Not a secondary problem • Significant Economic Impacts

  19. Adapted from the Invasive Plants and Animals Policy Framework, State of Victoria Department of Primary Industries, 2010 Source: IUCN Issues Brief /NOV17

  20. Summary • Invasive species not easy; not a priority • Try not to think of them one-dimensionally • Long-term planning needed; eradication is expensive and long-term • Seek Advances Through Science

  21. Q U E S T I O N S Photo: Anthony Pangelinan

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