Canopy tree growth responses following selection harvest in seven species varying in shade tolerance

  • Published source details Jones T.A., Domke G.M. & Thomas S.C. (2009) Canopy tree growth responses following selection harvest in seven species varying in shade tolerance. Canadian Journal of Forest Research, 39, 430-440.


This study is summarised as evidence for the following.

Action Category

Log/remove trees within forests: effects on mature trees

Action Link
Forest Conservation
  1. Log/remove trees within forests: effects on mature trees

    A replicated, study in 2004 in temperate broadleaf forest in Ontario, Canada (Jones, Domke & Thomas 2009) found that selective harvest increased the growth rate of shade-tolerant tree species. Annual increase of stem diameter (mm) for stems of the shade-tolerant species sugar maple Acer saccharum (Before: 1.3; after: 1.4), American beech Fagus grandifolia (Before: 1.3; after: 1.7) and eastern hemlock Tsuga canadensis (Before: 1.4; after: 1.6) was higher 4-15 years after harvest than in the five years before harvest. In contrast,  for the other less shade-tolerant species black  cherry Prunus serotina, white spruce Picea glauca, red maple Acer rubrum and yellow birch Betula alleghaniensis), stem diameter increase was similar between the two time-periods (1.2-1.6 mm/year). Annual increase of stem diameter was calculated by measuring stem cores extracted in 2004 from 4,127 trees in 174 plots representing nine years of harvest (retaining 15-18 m2/ha basal area): 1984, 1989, 1992, 1994, 1997, 1998, 2001, 2002, 2003. There were 16-20 plots for each harvest year.


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