Crop diversity benefits carabid and pollinator communities in landscapes with semi‐natural habitats

• DOI: 10.1111/1365-2664.13712
• Publication Date: 2020-08-13T06:53:34Z
• Authors: Guillermo Aguilera; Tomas Roslin; Kirsten Miller; Giovanni Tamburini; Klaus Birkhofer; Berta Caballero‐L...; Sandra Ann‐Marie ...; Erik Öckinger; Maj Rundlöf; Adrien Rusch; Henrik G. Smith; Riccardo Bommarco
• Keywords: Diversity index

Abstract In agricultural landscapes, arthropods provide essential ecosystem services such as biological pest control and pollination. Intensified crop management practices homogenization of landscapes have led to declines among organisms. Semi‐natural habitats, associated with high numbers these organisms, are increasingly lost from but diversification by increasing diversity has been proposed a way reverse observed arthropod thus restore services. However, whether or not an increase in the types within landscape promotes abundances pollinating predaceous arthropods, how semi‐natural habitats might modify this relationship, well understood. To test proportion related abundance beneficial communities, we collected primary data seven studies focusing on natural enemies (carabids spiders) pollinators (bees hoverflies) 154 fields Southern Sweden between 2007 2017. Crop 1‐km radius around each field was positively Shannon index carabid pollinator communities rich habitats. Abundances were mainly affected landscape, decreasing habitat type increased. Spiders showed no response either Synthesis applications . We show that joint effort preserving promoting is necessary enhance pollinators. Our results suggest can contribute conservation service‐providing particularly if crops targets complex