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The agricultural sector has been intensifying production systems to increase yields. Olive cultivation is the most widespread permanent crop in Europe and the Mediterranean region and in many cases, it is under intensive farming practices with heavy use of agrochemicals, greatly affecting olive grove biodiversity. In this study we investigate the impact of different understorey management practices (undisturbed, cleared with mechanical means) on plant cover, ground beetle and bee richness and abundance, and on the abundance of ground arthropods and flying insects in olive groves on Lesvos Island, North Aegean, Greece. We found that undisturbed understorey had a positive impact on plant richness and abundance, ground beetle and bee richness and abundance, as well as ground arthropod and flying insect abundance. The results suggest that maintaining the plant cover undisturbed significantly improves the biodiversity of the olive groves and by extension the ecosystem services, such as pollination, pest control and soil health.
Stavrianakis et al. (Mon,) studied this question.