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Providing evidence to improve practice

Individual study: 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 intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Thin trees within forest and woodland Bat Conservation

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)