The differential sensitivity of red pine and quaking aspen to competition

Loading...
Thumbnail Image

Persistent link to this item

Statistics
View Statistics

Journal Title

Journal ISSN

Volume Title

Title

The differential sensitivity of red pine and quaking aspen to competition

Published Date

1995

Publisher

NRC Research Press

Type

Article

Abstract

Growth of red pine (Pinusresinosa Ait.) and quaking aspen (Populustremuloides Michx.) target trees with varying degrees of competition by neighboring aspen was measured in a 7-year-old clearcut in northeastern Minnesota. Competitive conditions were measured using indices of resource availability (percent open sky) and neighborhood stand density. Three-year diameter growth of target trees was reduced by more than 50% in both species because of competition from neighboring quaking aspen. The last 2 year's height growth was also reduced by approximately 30% for both species. The relationship between growth and percent open sky was convex for red pine and concave for quaking aspen, potentially indicating a greater sensitivity in aspen to any reduction below optimal resource availability. Competition reduced crown size in both species, but self-pruning occurred only in quaking aspen. Needle and leaf size were not affected by competition, but red pine needle density was lower in highly competitive environments. Red pine had a higher specific gravity when growing under competition, partially offsetting the reduction in wood volume.

Keywords

Description

Related to

Replaces

License

Collections

Series/Report Number

Funding information

Isbn identifier

Doi identifier

10.1139/x95-187

Previously Published Citation

The differential sensitivity of red pine and quaking aspen to competition. (1995). Canadian Journal of Forest Research, 25(11): 1731-1737, 10.1139/x95-187.

Suggested citation

Puettmann, Klaus J; Reich, Peter B. (1995). The differential sensitivity of red pine and quaking aspen to competition. Retrieved from the University Digital Conservancy, 10.1139/x95-187.

Content distributed via the University Digital Conservancy may be subject to additional license and use restrictions applied by the depositor. By using these files, users agree to the Terms of Use. Materials in the UDC may contain content that is disturbing and/or harmful. For more information, please see our statement on harmful content in digital repositories.