Table 1. Total activity densities and carabid species richness in the different pitfall trap designs over all plots and sampling intervals.

Response variable	(i) Simple type	(ii) Extended PVC rim plate type	(iii) V-shaped barrier type	(iv) X-shaped barrier type
Carabid beetles
Species richness	17	17	29	35
Activity density	55	39	208	353
Staphylinid beetles
Activity density	103	44	131	348
Spiders
Activity density	576	354	973	2,654