The PIR team identifies and prioritizes the country’s main positive and negative trends in biodiversity and understands their underlying drivers, or ‘drivers of change’. This may not require additional studies. The NBSAP or other strategic documents and studies should already have established the main drivers of change in the country. If this is the case the PIR can focus on drivers related more closely to finance, economic, and policy issues rather than biophysical concerns. On the other hand, if the NBSAP or other documents do not provide a very detailed root cause (or similar) analysis, then this step needs to be implemented in detail.