Assess graduate-level ability to analyze how nutrient enrichment (eutrophication) alters feedbacks and stability in ecological food webs. Scope includes distinguishing bottom-up and top-down feedbacks, mechanisms driving trophic cascades and alternative stable states, interpreting simple dynamical models (consumer–resource ODEs, stoichiometry) and stability metrics (resilience, resistance, variance, bifurcation indicators), and evaluating empirical indicators and management responses. Tasks: identify and classify feedback loops from model or data outputs, predict thresholds for regime shifts or recovery under increasing nutrient loads, and propose monitoring metrics and mitigation strategies to reduce collapse risk.