Sediment sink-source shifts drive intensified internal phosphorus (P) release during the rainy season in a eutrophic plateau lake - Chaoran Guo; Fu Zhang; Yanjun Wu; Chengfei Tong; Yuyi Wang; Jianxia Cai; Zheng Zhao; Jinliang Liu; Qi Yang; Xiaozhi Gu; Jicheng Zhong; Jizheng Pan (Water Research, 2026)