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Total abundance (mean ± SE) of arachnid and insect predators (A) in field margins, (B) on orange trees in orchards with different field margin management: BS—bare soil; WV—weed vegetation; RO(ORG)—rosemary hedgerow (organic orchard); RO(IPM)—rosemary hedgerow (IPM orchard); OR—oregano hedgerow; SG—sage hedgerow; SV—savory hedgerow. Identical letters above the error bar indicate no statistically significant differences among orchards.
