Effects of forest management on diversity and abundance of fruit-feeding nymphalid butterflies in south-eastern Cote d'Ivoire
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Published source details
Fermon H., Waltert M., Larsen T.B., Dall'Asta U. & Muehlenberg M. (2000) Effects of forest management on diversity and abundance of fruit-feeding nymphalid butterflies in south-eastern Cote d'Ivoire. Journal of Insect Conservation, 4, 173-189.
Published source details Fermon H., Waltert M., Larsen T.B., Dall'Asta U. & Muehlenberg M. (2000) Effects of forest management on diversity and abundance of fruit-feeding nymphalid butterflies in south-eastern Cote d'Ivoire. Journal of Insect Conservation, 4, 173-189.
Actions
This study is summarised as evidence for the following.
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Encourage natural regeneration in former plantations or logged forest Action Link |
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Thin trees within forests Action Link |
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Encourage natural regeneration in former plantations or logged forest
A site comparison study in 1996 in a logged tropical rainforest in south-east Côte d’Ivoire (Fermon et al. 2000) found that the abundance, species richness and diversity of fruit-feeding butterflies (Nymphalidae) were similar in naturally regenerating forest and forest managed by thinning, but rarer species were caught more frequently in regenerating forest. Naturally regenerating forest had a similar abundance (56 individuals/trap), species richness (71 species) and diversity (data presented as model results) of butterflies to forest managed by thinning (abundance: 54 individuals/trap; richness: 76 species). However, species with smaller geographic ranges were caught more frequently in naturally regenerating forest (data presented as model results). See paper for individual species results. From 1960–1990, a 216 km2 forest was selectively logged. From 1992 the forest was protected, and two management options were implemented: natural regeneration (no management) and liberation thinning. Liberation thinning was designed to promote the growth of commercial timber species, and included cutting of lianas and climbers, and killing some non-commercial trees. Rare trees and important fruit trees were protected. From January–March 1996, butterflies were sampled in 30 ha of naturally regenerating forest, and 30 ha of thinned forest, using 28 banana-baited traps in each habitat. Traps were set 1 m above ground, 100 m apart, for six consecutive days, and checked daily.
(Summarised by: Andrew Bladon)
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Thin trees within forests
A site comparison study in 1996 in a logged tropical rainforest in south-east Côte d’Ivoire (Fermon et al. 2000) found that the abundance, species richness and diversity of fruit-feeding butterflies (Nymphalidae) were similar in forest managed by thinning and naturally regenerating forest, but rarer species were caught less frequently in thinned forest. Forest managed by thinning had a similar abundance (54 individuals/trap), species richness (76 species) and diversity (data presented as model results) of butterflies to naturally regenerating forest (abundance: 56 individuals/trap; richness: 71 species). However, species with smaller geographic ranges were caught less frequently in thinned forest (data presented as model results). See paper for individual species results. From 1960–1990, a 216 km2 forest was selectively logged. From 1992 the forest was protected, and two management options were implemented: liberation thinning and natural regeneration (no management). Liberation thinning was designed to promote the growth of commercial timber species, and included cutting of lianas and climbers, and killing some non-commercial trees. Rare trees and important fruit trees were protected. From January–March 1996, butterflies were sampled in 30 ha of thinned forest and 30 ha of naturally regenerating forest, using 28 banana-baited traps in each habitat. Traps were set 1 m above ground, 100 m apart, for six consecutive days, and checked daily.
(Summarised by: Andew Bladon)
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