ARTHROPOD DIVERSITY IN AGROSYSTEMS UNDER DIFFERENT MANAGEMENT

Arthropod diversity under three different agro-ecosystem management practices was monitored in the following six agroecosystems in North Moravia (Czech Republic): spontaneous fallow, mulched meadow without biomass harvesting, intensive system with pesticides and synthetic fertilizers, and systems of intensive seed, organic seed, and organic hay production. Altogether 125 500 specimens representing 25 arthropod groups were collected in here within the years 2008–2010 by means of emergence traps (1 m2 bottom area). In all variants, the highest number of taxa was found in the systems without biomass harvesting. The highest number of specimens was found in intensive systems. On the contrary, the lowest number of specimens was found in organic systems. Four dominant taxa (relative abundance > 5%) were evaluated: Sternorrhyncha, Collembola, Diptera, and Hymenoptera. Statistical analysis was carried out to evaluate the effect of different management practices on the occurrence of the dominant taxa in the mentioned agro-ecosystems. Diptera and Hymenoptera were the most frequent (however insignificant as concerns statistics) in systems without harvesting biomass. Sternorrhyncha and Collembola were significantly more abundant in intensive systems. The databank presented herein should hopefully contribute to further biological research in fields under different management practices.