2006: Evaluating spatial autocorrelation and depletion in pitfall-trap studies of environmental gradients. 2010: Terrestrial insect communities and the restoration of an industrially perturbed landscape: assessing success and surrogacy. 1979: Catches in pitfall traps in relation to mean densities of carabid beetles. Received: FebruRevised: JanuAccepted: JanuPublished online: JanuShow citation Keywords: Araneae, spiders, Carabidae, ground beetles, funnel pitfall trap, trap roof, ground-dwelling We conclude that funnel pitfall traps with roofs have no negative effects on capture efficiency of ground beetles and spiders, therefore application of this sampling technique is strongly recommended. However, funnel pitfall traps with roofs collected significantly more carabid beetles, especially individuals of those species that are large or good fliers. Total abundance of large carabids and thus the total abundance of ground beetles was lower in funnel pitfall traps without a roof than in other types of traps. We found that a funnel and/or a roof had no effect on spider catches. The main goal of present study was to compare the effect of four types of differently combined funnel and roof pitfall traps on the capture efficiency of epigeal arthropods. A roof that prevents rain and plant litter entering a trap, prevents dilution of the preservative and escape of arthropods. Pitfall trap sampling is also affected by the accumulation of plant litter in the traps, rain fall and by-catches of small vertebrates, which may cause a bias in the catch by obstructing traps or attracting certain insects. material, size and modification of parts of the trap and sampling design. Their sampling efficiency is affected by several factors, e.g. 115: 15-24, 2018 | DOI: 10.14411/eje.2018.003 Efficiency of pitfall traps with funnels and/or roofs in capturing ground-dwelling arthropods Original article Péter CSÁSZÁR, Attila TORMA, Nikolett GALLÉ-SZPISJAK, Csaba TÖLGYESI, Róbert GALLÉ Department of Ecology, University of Szeged, Közép fasor 52, Szeged H-6726, Hungary e-mails: traps are widely used for sampling ground-dwelling arthropods.
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