Article

 

Underplanted conifer seedling survival and growth in thinned Douglas-fir stands Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/articles/4m90dv88p

Descriptions

Attribute NameValues
Creator
Abstract
  • In a multilevel study to determine limits to underplanted conifer seedling growth, Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), grand fir (Abies grandis (Dougl. ex D. Don) Lindl.), western redcedar (Thuja plicata Donn ex D. Don), and western hemlock (Tsuga heterophylla (Raf.) Sarg.) seedlings were planted beneath second-growth Douglas-fir stands that had been thinned to basal areas ranging from 16 to 31 m2/ha. Understory vegetation was treated with a broadcast herbicide application prior to thinning, a directed release herbicide application 2 years later, or no treatment beyond harvest disturbance. Residual overstory density was negatively correlated with percent survival for all four species. Broadcast herbicide application improved survival of grand fir and western hemlock. Western redcedar, grand fir, and western hemlock stem volumes were inversely related to overstory tree density, and this effect increased over time. There was a strong indication that this was also the case for Douglas-fir. Reduction of competing understory vegetation resulted in larger fourth-year stem volumes in grand fir and western hemlock.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Thomas J. Brandeis, Michael Newton, and Elizabeth C. Cole. 2001. Underplanted conifer seedling survival and growth in thinned Douglas-fir stands. Can. J. For. Res. 31: 302–312.
Journal Title
Journal Volume
  • 31
Journal Issue/Number
  • 2
Academic Affiliation
Rights Statement
Publisher
Peer Reviewed
Language
Replaces

Relationships

Parents:

This work has no parents.

Items