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ISA Past, Present and Future


A Rich Heritage

Editor's Note: See the Spring edition of WoodNotes, our online magazine, for brief overviews of five additional U.S. organizations that work in urban and community forestry on a national level.


The International Society of Arboriculture (ISA) has served the tree care industry for over seventy years as a scientific and educational organization. ISA was founded in 1924 when a group of forty individuals, each engaged in a phase of tree work or research, were called together by the Connecticut Tree Protection Examining Board to discuss shade tree problems and their possible solutions. It was during this meeting this group identified a need for gathering tree care information and to provide a means for its dissemination. The National Shade Tree Conference (NSTC) was founded soon thereafter.

NSTC experienced gradual growth until 1929 when the economy in the United States collapsed and membership in the young organization sank to fourteen and continued to look bleak for several years, but in 1936, membership grew from thirty-three the previous year to one hundred forty-seven. With few exceptions, steady growth has been seen every year since.

Due to its influence and membership spreading beyond the borders of the United States, the organization changed its name to the International Shade Tree Conference (ISTC) in 1968. Only a few years later, in order to more accurately reflect its broadening scope, the name was again changed, this time to the International Society of Arboriculture in 1976. Today membership in the organization has topped 13,000 world-wide. ISA continues to be a dynamic medium through which arborists around the world share their experience and knowledge for the benefit of society. ISA, aligned on many fronts with other green organizations, is working hard to foster a better understanding of trees and tree care through research and the education of professionals as well as global efforts to inform tree care consumers. The Strategic Plan: ISA 2000 Over one hundred fifty volunteers collectively wrote ISA's ambitious seven-point plan of action for the remainder of this decade. ISA 2000 calls for research and educational opportunities within the tree care profession and also considers education opportunities for the general public as well. Each of the following ISA 2000 goals has specific in-depth strategies to ensure its implementation:

Goal #1 - To provide effective and efficient member services.
Goal #2 - To improve the quality of arboriculture practice.
Goal #3 - To promote research and increase the knowledge of urban tree care.
Goal #4 - To increase public awareness of the benefits of trees and proper tree care.
Goal #5 - To maintain a healthy, growing organization.
Goal #6 - To broaden the educational opportunities for arborists.
Goal #7 - To improve the transfer of technology from research to practice.

When successfully completed, this plan promises to change the face of arboriculture and shape the future of the tree care industry for many years to come.

For more information visit the ISA website at www.isa-arbor.com

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