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MODULE 8
Control
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Module Objectives
• Know what control is and how it differs from eradication
• Recognise the requirements that must be met if control objectives are to be achieved and desired outcomes sustained
• Recognise the 3 main approaches to control
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What is control?
Control involves reducing the numbers of an IAS to below pre-set levels, or containing its population within a defined area.
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How does control differ from eradication?
Control:– Individuals are
still present, but at lower densities
Eradication:–Eradication involves the complete removal of a targeted IAS population
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What Rule Must be Met for Control to be Achieved?
Responsible agencies must declare the “support” for projects and long-term commitment
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What are the Objectives of Control?
• Reducing abundance
• Containing distribution
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Monitoring: Answering Questions
The process of measuring to detect change
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What do I need to know to control IAS
• Effective methods• The target species• The site
Measuring your control effort will also provide essential information
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Is progress being made towards control objectives?
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Are changes occurring with protected resources?
This will be your main interest
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Any improvements to techniques that might reduce costs, or lead to enhanced outcomes, can be significant.
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What control methods might I use?
There are two main methods of control:
• Containing distribution
• Limiting abundance
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Containing Distribution
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Limiting Abundance
The three main methods are:• Mechanical• Chemical• Biological
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Mechanical control
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Chemical Control
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Biological Control
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• Successful control requires sustained commitment and support
• Control involves limiting abundance and/or containing distribution
• Integrated pest management approaches are being Increasingly employed
• Setting appropriate goals and realistic control objectives, and monitoring results and outcomes as control regimes proceed are critical
Summary