engleski

Diversity and ecology of non-target invertebrate fauna in Integrated and Ecologically based Pest Managements in agricultural sites within MEDITERATRI project Pest Managements in agricultural sites within MEDITERATRI project

Agricultural ecosystems are very complex regarding predator and prey dynamics depending on crop types and management intensity. Prey availability can affect the number and diversity of predators that are part of higher trophic niches. To analyse diversity of ground active predatory arthropods (Insecta, Carabidae and Arachnida, Araneae) and their potential prey (Malacostraca: Isopoda, Mollusca:Gastropoda and Hexapoda: Collembola) samples were collected using pitfall traps that were exposed during vegetation season, from May till November, in 2018. Five locations were selected, olive groves in ecological production (EO), olive groves in integrated production (IO), a vineyard in integrated production (IV), a vineyard in ecological production (EV) and untreated sites on karst (C), and for each location, community composition of predators and their prey were analysed and compared in respect with applied management. Moreover, predator abundance was compared with prey density in order to predict how prey availability affects carabids and spiders sustainability in the field. Results showed differences in community composition between managed and the control site, and between two types of management. Moreover, a positive correlation between the abundance of predators and potential prey was recorded. Based on these results factors that might enhance diversity and abundance of predatory arthropods as important for natural pest control will be discussed.

carabids, predators, prey, spiders, Zadar County

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