The effect of conservation and conventional tillage on carabid communities was compared using pitfall trapping in two commercial barley (Hordeum vulgareL.) fields located 4 km apart on similar soils. Carabid abundance was significantly higher under conventional tillage but abundances of individual species varied between the two fields.Agonum placidumSay and twoAmaraBonelli species were more abundant at the conventional tillage farm whereasPterostichus adstrictusEschscholtz and threeBembidionLatreille species were significantly more abundant at the reduced tillage farm. Slightly more carabid species were collected in this latter field and species diversity and evenness were significantly higher.
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Héctor A. Cárcamo (1995) studied this question.
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