Individual study: The significance of restored flower-rich hay meadows on set-aside land for butterflies and grasshoppers
Bosshard A. & Kuster D. (2001) The significance of restored flower-rich hay meadows on set-aside land for butterflies and grasshoppers. Agrarforschung, 8, 252-257
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
Restore/create species-rich, semi-natural grassland
A replicated study in 1995-2000 in 11 sites with newly created flower-rich meadows on set-aside land in central Switzerland (Bosshard & Kuster 2001) found generally higher butterfly (Lepidoptera) densities on the created meadows (e.g. 170 individuals/ha in Riedikon) than on intensively managed arable land. However, the highest densities were found in flower-rich field margins (e.g. 440 individuals/ha in Seewadel). Adult butterfly abundance was positively correlated to the number of flower units, and up to 98% of flower visits were recorded on only five plant species. Note that no statistical analyses are presented in this study. On three main sites (Berg, Riedikon and Seewadel), flower-rich meadows were established on 0.5-0.6 ha experimental plots. Butterflies were recorded during seven visits from May-September 1999 along fixed transects. In an additional eight sites, butterflies and grasshoppers (Orthoptera) were monitored in 1995-2000 approximately twice a year.