Ecology Letters - The enrichment paradox in adaptive radiations: Emergence of predators hinders diversification in resource rich environments Traditional theory predicts that during the course of a radition, diversification rate slows down as vacant niches are being occupied. However, the influence of novel niches emerging during the process is unclear. Catalina and Ole tackled this problem from a theoretical perspective using a combination of analytical and numerical techniques based on an eco-evolutionary model of a radiating clade. They find that the effect of intraclade consumes on the radiation depends on the productivity of the system. Highly productive systems allow earlier evolution of intra-clade consumers, which in turn end up harbouring less species-rich radiations compared to less productive environments.