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Module 7

Module 7. Eradications. Learning Outcomes. By the end of this module you should be able to: Know what eradication is When and where it might be undertaken What conditions must be met for eradications to be successful Recognise the key steps in undertaking an eradication operation.

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Module 7

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  1. Module 7 Eradications

  2. Learning Outcomes • By the end of this module you should be able to: • Know what eradication is • When and where it might be undertaken • What conditions must be met for eradications to be successful • Recognise the key steps in undertaking an eradication operation

  3. What is eradication? • Eradication is the complete removal of a population of a targeted IAS in a set area within a defined timeframe

  4. Explosion phase Carrying capacity Population size Lag phase Time When is eradication appropriate? • Eradication is the most appropriate option as soon as an alien species has been detected – during the lag phase

  5. What conditions need to be staisfied for successful eradication? • All individuals must be put at risk • Individuals must be removed faster than they reproduce • Re-invasion risks must be near zero

  6. Other important factors should include: • Involving only field operators who are committed to the eradication • Designing an eradication operation so that it succeeds at first attempt • Monitoring to detect changes • Consistent and appropriate support from stakeholders

  7. Are there particular areas that offer better chances for eradication success?

  8. Deciding to proceed with eradication There are many important issues to consider in deciding to proceed with eradication • Desired outcomes • Priorities • Available information • Risks

  9. Assessing Feasibility Feasibility assessments allow decisions to be made about the risks and costs of an eradication operation in relation to anticipated benefits

  10. Ecological factors

  11. Logistics

  12. Social factors

  13. CHOOSING THE METHOD/S OF ERADICATION Choosing the right combination of methods, their timing, and the people to apply them will be critical to your success

  14. What methods might be used? Mechanical

  15. Chemical

  16. Biological

  17. How to choose the methods Know what range of techniques are available and which ones would be most appropriate for your site

  18. Measuring change- Monitoring

  19. SUMMARY • Eradication is about achieving desired outcomes • Insular habitats are uniquely suited as places where IAS may be eradicated • where it is feasible it is the best option for achieving and sustaining desired outcomes. • Monitoring of IAS – especially when they are at low densities, will be important – as will outcome monitoring • Eradication can only be justified if the risks of re-invasion can be effectively managed.

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