Hydrological regime modulates nitrogen retention-removal shifts in a glacier-oasis alpine river by restructuring multi-trophic interactions and microbial assembly - Yifei Fan; Qiqi Wei; Pan Zhang; Li Zou; Ayixie Aisikaier; Xiaoyun Ma; Zetao Dai; Yunfeng Tian; Yujie Li; Feifei Wang; Shengchang Yang; Wenzhi Cao (Journal of Environmental Management, 2026)