Individual study: Hymenoptera Parasitica of different agrarian habitat types in the cultural landscape of northeastern Germany
Schmitt G. & Roth M. (2000) Hymenoptera Parasitica of different agrarian habitat types in the cultural landscape of northeastern Germany. Mitteilungen Der Deutschen Gesellschaft Fur Allgemeine Und Angewandte Entomologie, 12, 379-383
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
Provide or retain set-aside areas in farmland
A replicated, controlled site comparison study in summer 1995 on 10 sites of three different arable habitats in the biosphere reserve Schorfheide-Chorin, northeast Germany (Schmitt & Roth 2000) found significantly more individuals (but not families) of parasitic wasps (Hymenoptera: Parasitica) on set-aside land (>160.7 wasps/ m2) than on cereal fields (<107.5 wasps/m2). The age of set-aside did not affect wasp numbers. There was no significant difference between numbers of parasitic wasps on set-asides and extensively managed grasslands (178.7 wasps m2). Four winter cereal fields, four set-asides (1 to >10 years old) and two extensively managed grasslands (one meadow, one grassland grazed by sheep) were monitored. Hymenoptera were sampled from March to July 1995 using six photo-eclectors on each site. The eclectors were placed randomly and emptied every four weeks. Insects were identified to family level.