Cultural homegarden management practices mediate arthropod communities in Indonesia
Tropical forest loss and transformation to agroecosystems have serious impacts on biodiversity, associated ecosystem services and the livelihood of local people. The high crop plant biodiversity and low intensity management in many homegardens could play an important role in the preservation of biodiversity in modified landscapes, as well as sustain food security of low income households. In this study, we focused on the role of the owner’s cultural background as migrants (from the island of Java) or non-migrants (local residents) for homegarden characteristics, such as size, management diversification, and crop species richness, and their effect on arthropod communities in Jambi province, Indonesia. Vane traps, pitfall traps and sweep netting were used to survey the arthropod communities, in particular bees and wasps, in 24 homegardens. Our results show that the native Jambi locals used a smaller number of management practices and had smaller homegardens than the Javanese transmigrants, whereas crop species richness did not differ. Management diversification and crop species richness were positively related to arthropod abundance as well as species richness of bees and wasps, presumably due to the enhanced homegarden heterogeneity. Our findings suggest that the cultural practices of migrant versus non-migrant land-use managers, which is usually neglected in agroecology, can be a major determinant of management practices shaping community structure and services of beneficial arthropods.
KeywordsBiodiversity Ecosystem services Hymenoptera Indonesia Bees Wasps Migrants versus non-migrants Garden
We thank Patrick, Winda, Rico, Derly and Juwita for all their help in the lab and the field. We thank the village leaders and local homegarden owners for granting us the use of their properties. This study was financed by the Deutsche Forschungsgemeinschaft (DFG) in the framework of the collaborative German—Indonesian research project CRC (Collaborative Research Centre) 990: Ecological and Socioeconomic Functions of Tropical Lowland Rainforest Transformation Systems (Sumatra, Indonesia). MTH was supported by the German Academic Exchange Service (DAAD) during the manuscript writing.
- Burnham KP, Anderson DR (2002) Model selection and multimodel inference: a practical information-theoretic approach. Springer, New YorkGoogle Scholar
- Foster WA, Snaddon JL, Turner EC, Fayle TM, Cockerill TD, Ellwood MF, Broad GR, Chung AYC, Eggleton P, Khen CV, Yusah KM (2011) Establishing the evidence base for maintaining biodiversity and ecosystem function in the oil palm landscapes of South East Asia. Philos Trans R Soc B 366:3277–3291CrossRefGoogle Scholar
- Goulet H, Huber JT (1993) Hymenoptera of the world: an identification guide to families. Agriculture Canada Publication, OttawaGoogle Scholar
- Kumar BM, Nair PR (2004) The enigma of tropical homegardens. Agrofor Syst 61:135–152Google Scholar
- Kumar BM, Nair PKR (2007) Tropical homegardens: a time-tested example of sustainable agroforestry. Advances in agroforestry, vol 3. Springer, DordrechtGoogle Scholar
- R Core Team (2013) R: a language and environment for statistical computing. R Foundation for Statistical Computing. Vienna, Austria. ISBN 3-900051-07-0. http://www.R-projectorg/
- Senior MJ, Hamer KC, Bottrell S, Edwards DP, Fayle TM, Lucey JM, Mayhew PJ, Newton R, Peh KS-H, Sheldon FH, Stewart C, Styring AR, Thom MDF, Woodcock P, Hill JK (2013) Trait-dependent declines of species following conversion of rain forest to oil palm plantations. Biodivers Conserv 22:253–268CrossRefGoogle Scholar
- Steffan-Dewenter I, Kessler M, Barkmann J, Boss MM, Buchori D, Erasmi S, Faust H, Gerold G, Glenk K, Gradstein SR, Guhardja E, Harteveld M, Hertel D, Hohn P, Kappas M, Kohler S, Leuschner C, Maertens M, Marggraf R, Migge-Kleian S, Mogea J, Pitopang R, Schaefer M, Schwarze S, Sporn SG, Steingrebe A, Tjitrosoedirdjo SS, Tjitrosoedirdjo S, Twele A, Weber R, Woltmann L, Zeller M, Tscharntke T (2007) Tradeoffs between income, biodiversity, and ecosystem functioning during tropical rainforest conversion and agroforestry intensification. Proc Natl Acad Sci USA 104:4973–4978CrossRefPubMedPubMedCentralGoogle Scholar