Stopping say thrips or aphids eating a horticultural crop somehow removes a species, which then usually has a chain effect? Can you show me some scientific lite

Stopping say thrips or aphids eating a horticultural crop somehow removes a species, which then usually has a chain effect? Can you show me some scientific literature where this is typically the case? Personally I don't research these 'chain effects' in depth as it's well outside my area of expertise. There are however many research groups and government agencies looking at ecological impacts of crop protection measures. Some of their presentations are in the link I provided. As scientists, we collaborate on these kinds of things.