期刊
APPLIED SOIL ECOLOGY
卷 129, 期 -, 页码 61-71出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsoil.2018.05.003
关键词
Ecosystem services; Metaldehyde; Niclosamide; Poison baits; Rice; Saponin
类别
资金
- Asian Development Bank [Reta 6489]
- School of Life Sciences of the University of Technology Sydney
Decomposition is a key ecosystem service that reduces non-living organic matter, returning nutrients to the soil. In this study, we examine the responses by fly (Diptera) communities to molluscicide-poisoned apple snail (Pomacea canaliculata) cadavers in a tropical rice production landscape. Fewer molluscicide-poisoned cadavers were colonised by decomposer flies (niclosamide = 61% of cadavers with fly larvae; methaldehyde = 53%; Camellia sp. seed extract [saponin] = 50%) compared to control (freezer-killed) cadavers (81%). Metaldehyde, niclosamide and saponin reduced the abundance (average 51% reduction), biomass-density (average 63% reduction) and species richness (average 38% reduction) of flies emerging from the snail cadavers. The decay of control cadavers was generally faster (57% more tissue removed over 3 days) than molluscicide-treated cadavers. We suggest that poisoned carcasses potentially affect ecological communities across a range of trophic levels.
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