RT Journal Article SR Electronic T1 Management of Mature Trees JF Arboriculture & Urban Forestry (AUF) JO JOA FD International Society of Arboriculture SP 173 OP 184 DO 10.48044/jauf.1991.045 VO 17 IS 7 A1 James R. Clark A1 Nelda Matheny YR 1991 UL http://auf.isa-arbor.com/content/17/7/173.abstract AB The management of mature trees involves the application of cultural treatments in the context of a tree biology which changes with time. Key elements in understanding of the biology of old trees are the life history strategy of individual species, the limitations on growth that develop due to structural and resource availability considerations, and the causes of mortality in forest and landscape trees. Since the biology of the tree changes with time, so must its management. Arborists can play a central role in the maintenance of a mature, stable condition. They identify routine and remedial treatments, as well as assess the ability of a tree to respond to such treatment. However, the capacity of an arborist to restore a declining tree to a stable condition is questionable.