Deciding on appropriate scales – using the Surveillance Hierarchy

 

The Surveillance Hierarchy  is a first version of one of the decision tools in the surveillance strategy.  It was produced as a response to the gap analysis that was conducted at the Vegetation Surveillance Workshop.  The hierarchy helps those who are commissioning or designing a surveillance scheme to identify the appropriate scale for surveillance.  The scale will vary according to the type of question that is being addressed.  This paper will be updated according to user feedback.