Explore the intricate dynamics of nutrient interactions in shallow lakes with a focus on the role of sediment and internal phosphorus loading. Even with reduced external loading, internal phosphorus can hinder water quality improvements. Dive deep into the mechanisms of phosphorus release, influenced by redox-sensitive mobilization and microbial processes. Understand the long-term effects of phosphorus accumulation and discover effective restoration methods to mitigate internal loading. A comprehensive guide for environmentalists and water quality professionals.