Li, D.; Adeniji, L. A. J.; Meah, R. J.; Clements, C. F.

Artificial light at night (ALAN) can alter the movement of nocturnal pollinators such as moths, with potential consequences for pollination services. However, most studies have focused on the presence or properties of lights, while the role of spatial lighting configuration remains poorly understood. We conducted a field experiment to test how different lighting configurations affect pollination success in moth-pollinated plants. Plant assemblages containing three moth-pollinated species were exposed to one of three treatments: no-light control, isolated LED point lights, or 25 m linear arrays of multiple LED lights. We quantified pollination success as both the probability of seed set and reproductive output through seed and capsule production. Experimental lighting affected plant reproductive success, with light arrays increasing seed-set probability, seed and seed capsule number relative to unlit controls, whereas point lights showed no clear effect. Our results suggest that the spatial configuration of artificial lights may influence nocturnal pollination outcomes. Rather than simply suppressing pollination, low-intensity light arrays may alter pollinator movement among floral resources, potentially producing corridor-like effects under some conditions. Future work combining phytometer assays with direct tracking of moth movement is needed to assess whether light arrays facilitate or redirect the dispersal of nocturnal pollinators.