Impacts of selective logging management on butterflies in the Amazon
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Published source details
Montejo-Kovacevich G., Hethcoat M.G., Lim F.K.S., Marsh C.J., Bonfantti D., Peres C.A. & Edwards D.P. (2018) Impacts of selective logging management on butterflies in the Amazon. Biological Conservation, 225, 1-9.
Published source details Montejo-Kovacevich G., Hethcoat M.G., Lim F.K.S., Marsh C.J., Bonfantti D., Peres C.A. & Edwards D.P. (2018) Impacts of selective logging management on butterflies in the Amazon. Biological Conservation, 225, 1-9.
Actions
This study is summarised as evidence for the following.
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Use selective or reduced impact logging instead of conventional logging Action Link |
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Use selective or reduced impact logging instead of conventional logging
A replicated, site comparison study in 2015–2016 in 40 tropical forest sites in Rondônia, Brazil (Montejo-Kovacevich et al. 2018) found that intermediate intensity reduced impact logging (RIL) produced higher fruit-feeding butterfly (Nymphalidae) abundance, but not species richness, compared to low or high intensity RIL. Three to five years after logging, RIL sites logged at intermediate intensity had a higher abundance of butterflies (7.7 individuals/site/48 hours) than RIL sites logged at low (2.9 individuals/site/48 hours) or high (3.0 individuals/site/48 hours) intensity. Species richness was similar at intermediate (1.9 species/site/48 hours), low (1.7 species/site/48 hours) and high (1.7 species/site/48 hours) intensity RIL sites. However, community composition at logged sites was different to pristine forest (data presented as model results). From 2011–2012, reduced impact logging was conducted at 40 sites (>100 m apart, >250 m from roads or rivers). All timber trees >40 cm diameter were mapped prior to logging, and pre-felling vine cutting and directional felling were used to minimize disturbance. Logging intensity ranged from 0 (low) to 36.9 (high) m3 timber/ha (0–6 trees/ha), with intermediate logging at 18.6 m3 timber/ha. In the 2015 and 2016 dry seasons, fruit-feeding butterflies were sampled in 50-m radius plots at 40 logged sites and 20 pristine forest sites. Three baited cylindrical traps/plot were suspended 15–25 m apart, 1 m above the ground, and the surrounding undergrowth was cleared. Traps were open for 12 consecutive days, and visited every 48 hours to replace bait and record butterflies.
(Summarised by: Andrew Bladon)
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