Canadian Forest Service Publications

Assessment of beetle abundance and diversity by four methods of capture in the west-central part of Oumé, Ivory Coast. 2010. Kra, D.K.; Doumbia, M.; Klimaszewski, J. Journal of Animal & Plant Sciences 6(1): 579-588.

Year: 2010

Available from: Laurentian Forestry Centre

Catalog ID: 31950

Language: English

CFS Availability: PDF (request by e-mail)

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Abstract

Different methods of trapping for insect biodiversity related investigations are recommended, depending on the biological group studied. The aim of this study was to compare the efficiency of four trapping methods in capturing beetles in relation to habitat. The methods were: (1) yellow ground traps, (2) yellow aerial traps, (3) Malaise traps and (4) pitfall traps. We collected samples in 8 land use types: (i) primary forests (PF), (ii) secondary forests (SF), (iii) multi-species plantations (MP), (iv) 10-year-old teak plantations (TK10), (v) 4-year-old teak plantations (TK4), (vi) rural fallows (FA), (vii) mixed-crop fields (MC) and (viii) cocoa plantations (CC). We used 31 traps/site: 10 pitfall traps, 10 yellow ground traps, 9 yellow aerial traps and 2 Malaise traps. The traps captured 2195 specimens of Coleoptera (Malaise traps - 787 specimens, pitfall traps - 406 specimens, yellow aerial traps - 487 specimens, and yellow ground traps – 515 specimens). The Malaise and pitfall traps collected the highest number of specimens in mixed-crop fields. The yellow ground traps and yellow aerial traps collected the highest number of specimens in cocoa plantations and in primary forests. Beetle abundance and diversity varied according to the trap and the land use type. Although Malaise traps collected more families and individuals, combining different traps is recommended for the best sampling of Coleopteran taxa.