| Research questions | Number of articles |
|---|---|
| 1) Characterization of soil biodiversity in logged forests. | 54 |
| a) Effects of different logging operations on soil microorganisms | 20 |
| Effects of different logging operations in managed forests compared to unlogged forests | 15 |
| Effects of time since logging operations in managed forests compared to unlogged forests | 1 |
| Effects of logging re-entries in managed forests compared with unlogged forest | 2 |
| Effects of different logging re entries | 2 |
| b) Effects of different logging operations on soil fauna | 34 |
| Effects of different logging operations in managed forests compared to unlogged forests | 19 |
| Effects of time since logging operations in managed forests compared to unlogged forest | 5 |
| Effects of time since logging | 3 |
| Effects of logging intensities in managed forests compared to unlogged forest | 1 |
| Effects of logging intensities | 1 |
| Effects of logging re-entries in managed forests compared with unlogged forest | 3 |
| Effects of logging equipment (e.g., skid trails, logging roads) compared with unlogged forest | 2 |
| 2) Characterization of soil functions in logged forests. | 29 |
| Effects of different logging operations in managed forests compared to unlogged forest | 19 |
| Effects of time since logging operations in managed forests compared to unlogged forest | 3 |
| Effects of logging intensities in managed forests compared to unlogged forest | 1 |
| Effects of logging intensities | 4 |
| Effects of logging re-entries compared with unlogged forest | 1 |
| Effects of logging equipment (e.g., skid trails, logging roads) compared with unlogged forest | 1 |