Diversity and complexity complement apparent competition: Nematode assemblages in banana plantations

► Trophic cascades of resources increase top-down regulatory pressure. ► Organic resources enhance abundance of bacterivore and fungivore nematodes. ► Predator nematode abundance is related to that of their prey. ► Resource diversion enhances complementarity of apparent competition among prey guilds. ► Pest regulatory services may be disrupted by conventional management practices.