Ecological outcomes for multiple taxa from silvicultural thinning of regrowth forest

  • Published source details Gonsalves L., Law B., Brassil T., Waters C., Toole I. & Tap P. (2018) Ecological outcomes for multiple taxa from silvicultural thinning of regrowth forest. Forest Ecology and Management, 425, 177-188.


This study is summarised as evidence for the following.

Action Category

Thin trees within forest and woodland

Action Link
Bat Conservation
  1. Thin trees within forest and woodland

    A replicated, site comparison study in 2015 of six forest sites in New South Wales, Australia (Gonsalves et al 2018) found that recently thinned sites had higher bat activity and diversity than unthinned sites, but results varied for sites thinned more than eight years previously. Overall bat activity and diversity were higher in sites recently thinned (<8 years previously) than in unthinned sites (data reported as statistical model results). Sites thinned 8–20 years previously had similar bat activity to unthinned sites, but higher bat diversity. Sites thinned >20 years previously had higher bat activity than unthinned sites, but similar bat diversity. Bat activity did not differ significantly between thinned sites and undisturbed forest but was lower at unthinned sites than undisturbed forest. Twelve bat species were recorded in total (see original paper for data for individual species). Five treatments were sampled at each of six forest sites (20–30 ha, dominated by white cypress pine Callitris glaucophylla): unthinned (∼6,500 stems/ha); recently thinned (<8 years previously); thinned 8–20 years previously; thinned >20 years previously; undisturbed forest. All thinned sites had a similar density of stems (∼1,600 stems/ha). One bat detector recorded bat activity for 2–3 nights at each of 30 sites in November 2015.

    (Summarised by: Anna Berthinussen)

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 18

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