By-catches from bark beetle monitoring in 2013 and 2014

From June to October 2013 and from April to September 2014, a book printer monitoring with 20 pheromone traps (slit traps) was carried out by the University of Natural Resources at Gesäuse National Park southwest of Hieflau. In the present project, the by-catches from these traps were evaluated, as they provide valuable information about the organismic diversity of the sampled forest sites and can provide indications of dynamic processes in and outside of beetle areas. From samples, beetles (Coleoptera), bedbugs (Hepteroptera), cicadas (Auchenorrhyncha), spiders (Araneae) and weavers (Opiliones) were sorted and processed.
In comparison with the years, the populations of the beetles and bedbugs, which specialise in bark beetles found in 2013, have been observed reduced by 30-40 % in 2014. Species numbers in the second year of study were slightly increased for beetles (146-164) and spiders (16-21) in comparison, remaining for bedbugs (35-32) and falling in cicadas (16-6). The bulk of the species is euryök and is considered approximate, although individual spectacular evidence (highly endangered species, rare species, jungle relic species) can also be found again and again.