Ground beetles are important farmland predators and ecological indicators. Their dramatic decline on agricultural land has major welfare and ecological implications.
Ground beetles occupy an uncertain place in welfare science. They are more behaviourally complex than is often assumed - capable of learning, individual recognition in some species, and complex antipredator responses. Whether they experience suffering in a morally relevant sense remains unclear, but the precautionary logic for reducing mass mortality events (pesticide sprays, tillage) is reasonable. From an ecological welfare perspective, ground beetle populations support the welfare of vertebrate predators that depend on them. The most effective interventions - beetle banks, reduced tillage, pesticide reduction - also benefit a vast range of other farmland wildlife.