Bristlecone Pine: Science and Esthetics: A 7100-year tree-ring chronology aids scientists; old trees draw visitors to California mountains.

A 7100-year tree-ring chronology has been developed for bristlecone pine, Pinus aristata Engelm., in the White Mountains of east-central California by the addition of data from long-dead specimens to the 4600-year record from living trees. These dendrochronological studies have major applications to climatic interpretations, radiocarbon analysis, and the dating of past events. The great age of these trees and the esthetic appeal of both the trees and their environment are drawing increasing numbers of visitors to the bristlecone pine areas. Concern is expressed for the preservation of this ancient wood.