Timber harvesting residue treatment. Part II. Understory vegetation response

  • Published source details Scherer G., Zabowski D., Java B. & Everett R. (2000) Timber harvesting residue treatment. Part II. Understory vegetation response. Forest Ecology and Management, 126, 35-50.


This study is summarised as evidence for the following.

Action Category

Remove woody debris after timber harvest

Action Link
Forest Conservation
  1. Remove woody debris after timber harvest

    A replicated, controlled study in 1988-1991 in temperate coniferous forest in Washington State, USA (Scherer et al. 2000) found that different woody debris removal treatments had mixed effects on understory vegetation cover but not on species richness. At one site, vegetation cover was higher in control than other treatments (chopped: 1.8%; spring burn: 2.5%; pulled off site: 4.2%; control: 7.1%). At a second site, cover was higher in control, pulled off and autumn burn treatments (2.9, 1.2 and 1.2% respectively) than spring burn and chopped treatments (0.2% in both). At the other two sites it was similar among treatments (chopped: 2.7-2.8%; spring burn: 2.9-5.7%; autumn burn: 3.8-4.7%; pulled off: 1.2-5.7%; control: 2.1-2.2%). The number of species/m2 was similar among treatments at all four sites (chopped: 7-26; spring burn: 7-22; autumn burn: 8-20; pulled off: 5-20; control: 10-18). In 1989, five treatment plots (0.25-3.2 ha) were established in each of four sites: control (untreated); pulled off (woody debris pulled off the site); chopped (debris chopped); spring burn (low intensity burn); autumn burn (low to medium intensity). All plots were clearcut in 1988. Data were collected in 1991 in 15 quadrats (1 m2) in each treatment plot.


Output references
What Works 2021 cover

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 19

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.

Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust