Sampling efficiency of pitfall traps and Winkler extractor for inventory of the harvestmen (Arachnida: Opilionidae)

Abstract

Most soil and leaf litter invertebrates lack efficient inventory methods. We evaluated the efficiency of the pitfall traps (or Barber method) and Winkler extractor (or Winkler method) in a beech forest on limestone in southwestern Romania using harvestmen (Arachnida: Opilionidae) as target group. The aim was to test if the relative abundance, species richness and species composition differ between the two methods

Keywords

• opiliones
• pitfall traps
• winkler extractor
• relative abundance
• species richness
• species composition