Global Synthesis Reveals Context‐Dependent Plant Diversity Responses to CO 2 , Climate Change, and Nitrogen

and increased precipitation and those of nitrogen addition were counteracted by both increased and decreased precipitation. Interaction analyses further revealed that additive effects between drivers predominated, though significant antagonisms emerged for specific pairs. Importantly, these responses were strongly context-dependent, being mediated by a combination of site-specific conditions (i.e., local climate, soil, and background diversity) and experimental methodologies (i.e., treatment duration, intensity, and plot and sampling area). Our synthesis underscores that predicting future biodiversity trajectories necessitates that models evolve beyond main effects to explicitly represent both multi-driver interactions and the critical, often-dominant, moderating role of local contexts and experimental conditions.