| Individual growth rings provide
a biological record of
environmental change. Analysis
of tree ring-widths has been used
to estimate how climate in the
Rockies has changed in the last
900 years. |
|
|
This tree was sampled at timberline near the Columbia Icefields. It lived for 230 yrs
(1391 - 1621)
Source: Luckman, B., Dept. of Geography, University of Western Ontario
|
