Tree climbing | 59 | Public relations | 48 |
Cabling/bracing | 57 | Tree removal | 47 |
Chain-saw operations | 55 | Tree management plans | 46 |
Urban forest management | 54 | Ethics | 46 |
OSHA | 53 | Park management | 45 |
Tree appraisal | 53 | Lightning protection | 45 |
Street and park tree inventory | 51 | Integrated Vegetation Management | 45 |
Street tree ordinances | 51 | Transplanting large trees | 43 |
| | Role and function of tree commissions | 41 |
| | Small business management | 40 |
| | Volunteer management | 39 |
| | Urban wildlife | 37 |
| | Rigging | 37 |
| | Zoning and subdivision ordinances | 35 |
| | Urban fire ecology | 35 |
| | Personnel management | 33 |
| | Watershed planning | 33 |
| | Utility pruning | 33 |
| | Land use planning | 32 |
| | Conflict resolution | 29 |
| | Heavy equipment operation | 26 |