Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Amy K. Petersen; Will Russell
    Date: 2017
    Source: Gen. Tech. Rep. PSW-GTR-258. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station: 247-258
    Publication Series: General Technical Report (GTR)
    Station: Pacific Southwest Research Station
    PDF: Download Publication  (354.0 KB)


    The effects of selective-harvest on forest composition and structure in the southern range of the coast redwood (Sequoia sempervirens (D. Don) Endl.) forest have not been well documented. This case study focused on the Byrne-Milliron Forest in Santa Cruz County, California where selective-harvest is currently the primary method of timber extraction. The purpose of this research was to determine how forest structure and composition varied in regard to harvest intensity and management goals. We sampled 100 plots in the Byrne-Milliron Forest across five harvest sites. All sites had been essentially clear-cut in the late 19th or early 20th century, and subsequently selectively harvested in the late 20th and early 21st century. Four of the five sites have been managed primarily for timber production, while the fifth site, the Late Successional Unit (LSU), has been managed for old-forest conditions as well as timber production. We predicted the LSU would contain more late seral features, and that the presence of these features would be positively correlated to years since harvest, and negatively correlated to percentage cut and number of harvest re-entries. Data analysis procedures included one-way analysis of variance (ANOVA) for comparison between sites, and Pearson product-moment coefficient for correlations between variables. As expected, the LSU exhibited the most developed old-forest features, including the lowest stand density and exotic species richness among all sites evaluated. In addition, it contained the highest percentage of coast redwood associated herbaceous species and large woody debris (LWD). Results also indicated that percentage cut was the strongest predictor for canopy cover, stand density, LWD, and the cover of coast redwood associated herbaceous species. Our findings suggest that a lower percentage cut is more effective in maintaining conditions commonly associated with late seral forests such as snags, fire hollows, complex canopy structures and LWD, and these features can be present in selectively harvested stands if carefully managed.

    Publication Notes

    • You may send email to to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.


    Petersen, Amy K.; Russell, Will. 2017. A comparison of stand structure and composition following selective-harvest at Byrne-Milliron Forest. In: Standiford, Richard B.; Valachovic, Yana, tech cords. Coast redwood science symposium—2016: Past successes and future direction. Proceedings of a workshop. Gen. Tech. Rep. PSW-GTR-258. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station: 247-258.


    coast redwood, selective-harvest, Sequoia sempervirens, understory associates

    Related Search

    XML: View XML
Show More
Show Fewer
Jump to Top of Page