Ostrom is founder and co-director of the Workshop in Political Theory and Policy Analysis at IU, where an initial version of the Fischer-Steed paper was presented late last year.
Loosely defined as trees that line municipal streets, street trees produce a myriad of benefits. They provide shade, filter air pollution, absorb greenhouse gases, reduce storm water runoff, slow traffic, improve property values and contribute to aesthetic beauty. But if not properly maintained, they can become traffic hazards; and they can drop limbs, causing property damage and even injuries.
Yet street trees (and urban forestry in general) haven't been made a high priority by many cities and towns, Fischer said. While initiatives are under way to plant hundreds of thousands of trees in some cities, the paper points out that tree cover has declined dramatically in Chicago, Philadelphia, Washington, D.C. and other urban areas.
And street trees are subject to a patchwork of management schemes, developed under a wide variety of state and local laws. In some cities, local government is responsible for street trees. In other locales, it is up to private property owners to plant and care for street trees. Elsewhere, civic groups and neighborhood and homeowner organizations take the lead in managing street trees, which includes not only planting and pruning trees but deciding which species to plant and where.
The end result is that, for many communities, the citizens really do not know which trees are 'street trees,' who is responsible for them or what the 'rules' are regarding their management and protection.
Fischer said there are pros and cons to each approach, and more research is
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