More info for the term: succession
White ash is a pioneer species. It is characteristic of early and
intermediate stages of succession. Although mature white ash is
classified as shade intolerant, the seedlings are shade tolerant. A
seedling can survive at less than 3 percent of full sunlight for a few
years. This attribute allows the species to regenerate in gaps .
- 27. Schlesinger, Richard C. 1990. Fraxinus americana L. white ash. In: Burns, Russell M.; Honkala, Barbara H., technical coordinators. Silvics of North America. Vol. 2. Hardwoods. Agric. Handb. 654. Washington, DC: U.S. Department of Agriculture, Forest Service: 333-338. 
No one has provided updates yet.