| Abstrak/Abstract |
Complex agroforestry systems are suggested as a possible solution to reduce the efects of deforestation in the tropics while enhancing the livelihoods of local human populations. Cofee (Cofea spp.) is one of the most important commodity crops
in the world that can easily be cultivated in complex agroforestry systems. Cofee agroforestry systems usually sustain higher biodiversity levels than sun-exposed felds while keeping similar levels of productivity considering the several benefts of growing cofee under a complex system. We aim to explore the richness and abundance of invertebrates in cofee home gardens in West Java, Indonesia by comparing 14 sun-exposed and 14 shade-grown gardens. We collected data in March/April 2019 via pitfall traps, pan traps, and beating tray in each feld. We ran generalised linear models to assess whether the number of species and the number of individuals of insects difered between sun-exposed vs. shade-grown coffee gardens, and tested associations between main taxa. Overall, there was no diference in the richness (sun-exposed: 19.86±SE1.19; shade-grown: 19.71±SE1.19; Z-value=0.12, p value=0.904) and abundance (sun-exposed: 141.93±SE 3.18; shade-grown: 139.93±SE3.16; Z-value=0.35, p value=0.706) of invertebrates in cofee gardens, although taxa specifc diferences were present. Sunexposed felds had a higher abundance of invertebrates considered as pests (Blattodea: Rhinotermitidae, Ectobiidae; Coleoptera: Scarabaeidae, Lycidae and Tenebrionidae; Diptera: Anisolabididae, Drosophilidae and Sarcophagidae). Camponotus spp. were the most dominant ants in shade-grown gardens while Dolichoderus spp. and Myrmicaria spp. were more abundant in sun-exposed gardens. Despite the fact that sun-exposed cofee felds registered higher abundance of invertebrate pests than shade-grown cofee felds, the richness of invertebrates did not substantially vary between sun-exposed and shade-grown cofee, suggesting that the matrix of gardens ofers advanced ecosystem services. It is important to keep the complexity of agroforestry systems that provide key habitats for biodiversity. |
