Table 2 Confidence level categories and how often they have been chosen.
From: Biotic threats for 23 major non-native tree species in Europe
Confidence levels | Number of cases |
|---|---|
High - Reliable/high quality data sources on impact. The case was reviewed and verified by an expert. | 1786 |
Medium - Reliable/medium quality data sources of impact. The impact was either reported by a reliable forester but could not be reviewed and verified by an expert or it was published in a professional journal, but it is not clear from the publication that it was checked by an expert. | 189 |
Low - Low quality data sources of impact. Observation was reported by a non-professional or reported in a non-professional journal, without being confirmed by an expert. | 265 |
NA | 64 |
