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Review existing tree management policies, responsibilities, and practices
Almost all processes needed to sustain the urban forest - establishment, growth, decline, death, and degradation of trees - require some level of active management. Urban forest managers typically:
- plan and implement tree plantings
- maintain existing trees
- manage hazards associated with declining trees
- remove trees that have reached the end of their useful life span
- recycle or dispose of green waste and wood from pruning and removals.
Urban forest managers must also deal with problems related to the urban environment. These may include:
- utility line clearance
- damage to sidewalks and other hardscape due to tree roots
- construction damage to tree roots
- exotic species invading natural areas
- fire hazards at the urban-wildland interface
In most cities and other large organizations, tree management may be divided up among several departments. For instance, street trees may be under the care of public works while the parks department may manage park and open space trees. Planning departments may issue permits or approve plans that affect tree management on private properties. Planning and building inspectors may monitor compliance with tree protection measures during construction.
Other units or contractors that may affect trees through their activities should also be considered when you assess your overall tree management system. These may include:
- crews that repair and maintain streets and parking lots
- utility crews that maintain clearance or maintain overhead or underground lines
- crews that clear vegetation to maintain flow in creeks for flood control
- fire safety personnel that inspect sites for defensible space
These units may need guidance, training, and standards to help them protect trees as they perform their tasks.
Below is a list of possible questions and topics that may be included in the assessment of the existing tree management program.
Activities of departments/units that affect trees
- Which departments/units have direct tree care responsibilities and what portions of the urban forest do they manage?
- Which departments/units regulate or otherwise affect segments of the urban forest?
- Which entities (within or outside of the organization) perform activities that affect the urban forest in terms of tree health, growing space, or other factors?
- How are activities of these different entities monitored and coordinated?
- Are all units that affect the urban forest supporting the overall management goals through their activities?
- Are notification, design consultation, and oversight adequate to protect existing trees from harm?
- Can we improve efficiency by combining units, shifting responsibilities, sharing equipment, or making other changes?
Regulatory measures
- What classes of trees are subject to regulation?
- Which documents (e.g., city code, general plan, specific plans, improvement standards, etc.) include tree-related regulations and guidelines? Are these consistent across all the documents?
- What is the impact of existing ordinances and regulations on targeted tree populations (e.g., heritage trees)?
- To what degree are ordinances/regulations enforced? Possible measurements include numbers of permits, violations, and citations issued, penalties and fines collected.
Tree management
For each unit that has direct tree care responsibilities -
- inventory and work scheduling systems - What is used? How well does it work?
- internal planning framework - How are decisions made relative to tree selection, placement, maintenance, removal?
- practices and standards used, including inspection, maintenance, notification
- numbers of trees planted, maintained/pruned, and removed on a scheduled basis and unscheduled (e.g. due to calls, weather events, etc.)
- in-house vs. contracted work
- budget and funding source - Is it adequate to accomplish responsibilities? Change over time - up or down?
- staff - Are levels adequate? Is training needed or available? Does retention rate affect program capabilities?
- equipment - condition, maintenance issues, expected service life
Example
The City of Portland's urban forest management plan (pages 19 through 44) documents the various roles and responsibilities of all agencies that affect the urban forest. Responsible agencies and brief descriptions of their programs are included in this section of the Portland plan.
Portland Parks and Recreation
Parks superintendent
Urban Forestry Commission
Heritage Tree Program
PP&R Urban Forestry Program (text excerpted below)
Neighborhood Tree Liaison Program
PP&R Horticultural Services
Integrated Pest Management
PP&R Natural Resources Program<
Ecosystem Management Planning
Riparian Assessments
Portland Bureau of Planning
River Renaissance Program
Healthy Portland Streams (River Renaissance project)
The River Plan (River Renaissance project)
Bureau of Development Services
Code Enforcement
Environmental Zones
Review of Site Development Processes
Bureau of Environmental Services
Combined Sewer Overflow (CSO) Program: Clean River Plan
Comprehensive Watershed Planning and Management
Environmental Education and Stewardship
Erosion Control Manual
Property Acquisition Program
Superfund Response
Stormwater Management Manual
Street Trees and Canopy Assessment Program
Watershed Revegetation Program
Willamette River Design Notebook
Stormwater Advisory Committee
Office of Transportation
PDOT Bureau of Engineering and Development
PDOT Bureau of Maintenance
PDOT Bureau of Transportation System Management
Office of Sustainable Development
Local Action Plan on Global Warming
Green Building Policy
Portland Fire and Rescue
Portland Development Commission
The Port of Portland
The complex relationships are also shown in a chart and diagram. Just a small portion of this section of their plan is excerpted below.
PP&R Urban Forestry Program.
Over the years, the Urban Forestry Program has grown or shrunk depending on the economy and funding. At its maximum in 1983-84, a full-time crew of 29 did large-scale tree planting projects — planting, pruning and spraying individual street trees at the request of property owners. When funding reductions forced layoffs, Urban Forestry discontinued most of these activities. Although the City regulates public trees, the care and maintenance of the street trees is the responsibility of the adjacent property owners. Urban Forestry currently employs 25 full-time staff with responsibility for the public trees in parks, along streets and around public buildings as mandated by City Code. Their responsibilities include:
Coordinating the planning, planting and maintenance of public trees.
Maintaining, planting and replacing trees in parks and on City property.
Advising and educating property owners about the planting, care and preservation of street trees.
Permitting and inspecting all street tree plantings, pruning and removals.
Providing 24-hour emergency response services for storm and tree related emergencies.
Enforcing City Code to preserve significant trees.
Working with other City bureaus on tree-related issues.
By City Code, the City Forester supervises all tree maintenance services including cutting, pruning, spraying, planting and tree removal required by or performed by City bureaus. The Forester may plant or cause trees to be planted in the streets, parks and other property of the City. Other responsibilities include:
Reviewing development plans to preserve trees.
Working with the Urban Forestry Commission to resolve conflicts related to trees.
Providing information and clerical support to the Urban Forestry Commission.
Providing support to Friends of Trees and other nonprofit organizations to promote tree planting and enhance the urban forest.
Maintaining an experimental planting of ornamental trees for possible use on streets and in parks.
Educating the public through the Neighborhood Tree Liaison Program, Arbor Day Celebration, brochures, flyers, workshops and other presentations.
Educating park employees and recreation leaders about hazard trees and tree care in parks.
Assisting neighborhoods in their efforts to save mature elms in neighborhoods.
Developing and updating recommended street tree lists.
City of Portland 2004 Urban Forest Management Plan
Management planning questions
Below are some additional questions to consider regarding assessment of tree management.
- What tools and programs have been implemented to date and how effective have they been?
- Are our standards and practices up to date and based on the best available information and research?
- Do we have adequate staff, budget, and training to cover our tree care needs?
- How will tree care needs change over time and how will that affect management needs?
- Are the various entities that affect trees working with the same vision and towards the same end?
- Is our regulatory framework adequate or does it need to be updated or expanded?
Work plan
Fill in the tables below to record how you plan to gather information
| Activities of departments/units that affect trees-Who does what? How do they manage the urban forest? | ||
| Collected/written up by | Target completion date | |
| Street trees | ||
| Park trees | ||
| Facility trees | ||
| Heritage trees | ||
| Parking lot trees | ||
| Other-specify | ||
Save to work plan
| Elements of the regulatory framework that affect the urban forest | ||
| Information collected/written up by | Target completion date | |
| Ordinances | ||
| General plan | ||
| Specific plans | ||
| Improvement standards | ||
| Specifications | ||
| Hazard program | ||
| Street tree master plan | ||
| Approved planting list | ||
| Other-specify | ||
| Other-specify | ||
| Other-specify | ||
Outline
The table below can be used as an aid in recording responsibilities for trees in a community
Who does what for which trees? |
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| Indicate who is responsible for each tree category (streets, parks, facility, open space, heritage, etc.) | ||||||
Activity |
Activity subclass |
Arborist |
Public Works |
Parks |
Planning |
Other-specify |
Planting |
new sites |
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|
replacement plantings |
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Pruning |
scheduled |
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storm/emergency |
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utility clearance |
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street/equipment clearance |
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Tree removal |
Hazard trees |
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Clearance (for flood control, fire safety, etc) |
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Root system work |
Sidewalk/curb repair and replacement |
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Excavation for utilities |
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Construction |
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Permitting |
planting |
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pruning |
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removal |
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Outreach/ education |
Property owners/public |
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Contractors |
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Other-specify |
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Elements of the regulatory framework can be recorded in the work plan below.
Management tools in use |
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| Tool | Street trees | Park trees | Facility trees | Heritage trees | Parking lot trees | Other specify | |
| Ordinance | |||||||
| General plan | |||||||
| Specific plans | |||||||
| Improvement standards | |||||||
| Specifications - planting | |||||||
| Specifications - pruning | |||||||
| Hazard program | |||||||
| Street tree master plan | |||||||
| Approved planting list | |||||||
| Other-specify | |||||||
| Add content related to management: |