Field scale organic farming does not counteract landscape effects on butterfly trait composition
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Published source details
Jonason D., Andersson G.K.S., Öckinger E., Smith H.G. & Bengtsson J. (2012) Field scale organic farming does not counteract landscape effects on butterfly trait composition. Agriculture, Ecosystems & Environment, 158, 66-71.
Published source details Jonason D., Andersson G.K.S., Öckinger E., Smith H.G. & Bengtsson J. (2012) Field scale organic farming does not counteract landscape effects on butterfly trait composition. Agriculture, Ecosystems & Environment, 158, 66-71.
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This study is summarised as evidence for the following.
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A replicated, site comparison study in 2009 on 60 arable farms in Uppland and Scania, Sweden (Jonason et al. 2012) found that organic farms had a higher abundance and species richness of butterflies and day-flying moths than conventional farms. Data were not presented. Forty organic and 20 conventional farms (>2 km apart) were selected. Organic farms had been under organic management for 1–25 years. From June–August 2009, butterflies and burnet moths (Zygaenidae) were surveyed 5–6 times on three transects/farm. One 250-m transect was located along an uncropped margin of a cereal field, and two 50-m transects ran perpendicular to the margin into the field.
(Summarised by: Andrew Bladon)
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