Table 1 Classification of the European bird species trends based on the magnitude and uncertainty of the estimates (using 95% confidence intervals).
Class | Description |
|---|---|
Steep decline | A trend slope of <0.95 (a decline of more than 5% per year), with the upper confidence limit of the slope <0.95 |
Moderate decline | A trend slope of ≥0.95 and 1.00 (a decline of no more than 5% per year), with the upper confidence limit of the slope between 0.95 and 1.00. |
Stable | A trend slope where the confidence intervals overlap 1 (no significant change), with the lower confidence limit of change >0.95 and upper confidence limit of change <1.05 |
Uncertain | A trend slope where the confidence intervals overlap 1 (no significant change), with the lower confidence limit of change <0.95 and/or the upper confidence limit of change >1.05 |
Moderate increase | A trend slope between 1.00 and ≤1.05 (an increase of no more than 5% per year), with the lower confidence limit of the slope between 1.00 and 1.05. |
Strong increase | A trend slope of >1.05 (an increase of more than 5% per year), with the lower confidence limit of the slope >1.05 |
