Responses of epigeal beetles to the removal of weed cover crops in organic olive orchards.
作者： Belén Cotes , Manuel Cárdenas , Mercedes Campos , Juan Castro
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摘要: The study was conducted in an experimental organically managed olive orchard to test the short-term effects exerted on epigeal coleopteran populations by removal of plant cover (RPC) when compared non-managed natural (NPC). changes abundance and diversity beetles were analysed three blocks which crop removed during first week June 2005. Pitfall traps family level a reliable approach achieve aim this study. Related soil conservation, maintenance covers can potentially decrease erosion risk, traditional practices tend diminish activity fauna. This survey showed that as well richness dominance greater uncovered soils RPC control covered NPC. Therefore, after rainfall period, some families be used quick assessment tool evaluate disturbance (abiotic factor) arthropod population. Beetle assemblage under vegetable seems more favourable. As matter fact weeds offer advantage (hospitable temperature moisture) with respect bare soils. Finally silvanids could indicator group impact agronomic applied organic farming, since any kind orchards is undesirable practice terms protection conservation.
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